13" Cobra + Q45 / J30 Caliper upgrade possibility
12-09-2005, 01:56 PM
#1
13" Cobra + Q45 / J30 Caliper upgrade possibility
As you know, the more common bbk here on .org is the Cobra 13" rotor / 300z 4 piston caliper upgrade. This requires my bbk relocation brackets and my centering rings. Along with the correct brake lines and some minor extra bolts/washers/nuts. Pic is here
bbk upgrade
Although wheels that clear this setup is never been easier to get. ie.. 17"+ G35/350z/98 Cobra etc..... some still view as this too expensive.
Now the point:
The 90-96 Q45 and 93-97 J30 use the iron 2 piston caliper and the oem rotor thickness is about 30mm. Same as the 30mm 300z iron/Alumin calipers. These calipers also share the same mounting dimensions.
As long as the caliper shape is the same as the 300z sans the 2 outside caliper pistons, we should be able to use the following:
My bbk brackets/rings + 13" Ford Cobra rotors + correct lines + minor amount of bolts/nuts/washers to bolt right up to a 3-gen/4-gen/5-gen (with minor additional mods).
This should allow for a cheaper route for upgrading (Calipers are pretty cheap) and finding wheels that clear should be ALOT easier as both pistons are in the inside vs the 300z (2 inside 2 outside)
This hasn't been tried yet as far as I know. But I'd be willing to offer one set of brackets/rings for let's say $70 shipped vs the normal $90 shipped if someone were ready to go. ie..has the calipers and just needs to try. Or maybe I can send just one of my prototype bracket/ring for a trial test fit.
Does someone have a picture of a Q45/J30 Caliper?
bbk upgrade
Although wheels that clear this setup is never been easier to get. ie.. 17"+ G35/350z/98 Cobra etc..... some still view as this too expensive.
Now the point:
The 90-96 Q45 and 93-97 J30 use the iron 2 piston caliper and the oem rotor thickness is about 30mm. Same as the 30mm 300z iron/Alumin calipers. These calipers also share the same mounting dimensions.
As long as the caliper shape is the same as the 300z sans the 2 outside caliper pistons, we should be able to use the following:
My bbk brackets/rings + 13" Ford Cobra rotors + correct lines + minor amount of bolts/nuts/washers to bolt right up to a 3-gen/4-gen/5-gen (with minor additional mods).
This should allow for a cheaper route for upgrading (Calipers are pretty cheap) and finding wheels that clear should be ALOT easier as both pistons are in the inside vs the 300z (2 inside 2 outside)
This hasn't been tried yet as far as I know. But I'd be willing to offer one set of brackets/rings for let's say $70 shipped vs the normal $90 shipped if someone were ready to go. ie..has the calipers and just needs to try. Or maybe I can send just one of my prototype bracket/ring for a trial test fit.
Does someone have a picture of a Q45/J30 Caliper?
12-09-2005, 06:02 PM
#2
12-09-2005, 06:24 PM
#3
I was thinking about just throwing on some stock Q45 front brakes to see how much of an improvement, if any, they offer. Won't be until summer though. I don't want to replace my stock wheels.
12-09-2005, 07:28 PM
#4
That's only 1/2 of the caliper. It's missing the piece outside.
I looked at a set of Q45 calipers tonight. From what I see, this should work.
I looked at a set of Q45 calipers tonight. From what I see, this should work.
Originally Posted by Larrio
12-09-2005, 10:40 PM
#5
I have a set of Q45 calipers and i just measured them. The caliper bracket width is 28mm at the top of the opening and widens to 33mm throughout the rest of the opening. I'll be trying this upgrade tomorrow and seeing if the calipers fit under stock 15" wheels.
12-10-2005, 10:39 AM
#8
Originally Posted by zack342
tilley installed J30 calipers on a max not to long ago.
I might eventually be interested in some Cobra/J30 upgrade when my brakes need replacement....
12-11-2005, 11:09 AM
#12
Originally Posted by jimmyfloyd
So the J30's actually fit onto the back of the maxima? Would you suggest finding used ones, or buying new? Money is tight, but stopping is desired.
New ones will run you hundreds of dollars, so I'd suggest used...
12-11-2005, 11:19 AM
#14
The stock MS is enough for the 300z calipers. I've run my setup for almost 2 years. Drive a maxima with 13" rotors and 300z calipers and report back if you think they aren't up to the task. The difference in bore diamters for the maxima/300z is 1/16". The only reason I bring this possibility up is to still allow great breaking but with more wheel options
Originally Posted by 95maxrider
And he likes them a lot more than the 300zx calipers he had on before. He thinks it's due to our master cylinder not being up to the task of the 4 pistons in the 300zx, but being able to handle the J30's 2 pistons better. Kind of makes sense too....
I might eventually be interested in some Cobra/J30 upgrade when my brakes need replacement....
I might eventually be interested in some Cobra/J30 upgrade when my brakes need replacement....
12-11-2005, 11:22 AM
#15
No. Nissan rotors have the wrong offset to make this work. Plus the 6th gen rotors are too small for my brackets. People that want a bolt on option with smaller/thinner rotors should use the entire 6-gen setup
Originally Posted by irish44j
I wonder if they would be direct bolt-up using the 6th gen rotors .....
12-11-2005, 07:27 PM
#16
Originally Posted by Jeff92se
No. Nissan rotors have the wrong offset to make this work. Plus the 6th gen rotors are too small for my brackets. People that want a bolt on option with smaller/thinner rotors should use the entire 6-gen setup
I already have the full 6g setup, just looking at other options that would be lighter weight (probably 2pc rotors)...
12-11-2005, 07:42 PM
#18
so...what are we waiting on? Is this possible w/ Jeff's bbk brackets/rings + 13" Ford Cobra rotors + correct lines + minor amount of bolts/nuts/washers to bolt right up to a 3-gen/4-gen/5-gen? Is this proven?
12-11-2005, 08:00 PM
#20
Originally Posted by Nealoc187
You don't need different lines with the J30 calipers. Yes it works, as a few have said there are people already running j30 calipers (not with jeffs brackets though.)
12-11-2005, 08:32 PM
#21
well the stock rotor is pretty thin for the j30 caliper which is made for 30mm rotors... I think the 4th gen rotor is only 24mm if my memory is correct. it might work though but I don't know if anyone has tried that. The guy I know who did it used 300ZX (same as J30) rotors. Use the maxima torque member and the j30 caliper, j30 rotor, maxima brake line.
BTW the pads are the same between the J30 and max iirc so no you don't have to buy new pads either.
BTW the pads are the same between the J30 and max iirc so no you don't have to buy new pads either.
12-12-2005, 02:38 AM
#22
Originally Posted by Nealoc187
well the stock rotor is pretty thin for the j30 caliper which is made for 30mm rotors... I think the 4th gen rotor is only 24mm if my memory is correct. it might work though but I don't know if anyone has tried that. The guy I know who did it used 300ZX (same as J30) rotors. Use the maxima torque member and the j30 caliper, j30 rotor, maxima brake line.
BTW the pads are the same between the J30 and max iirc so no you don't have to buy new pads either.
BTW the pads are the same between the J30 and max iirc so no you don't have to buy new pads either.
nice, great info
12-12-2005, 10:40 AM
#24
I would assume they are different. It's not a big deal to buy pads for the J30/Q45 calipers.
Originally Posted by SPiG
Could someone double check to see if the pads are the same between the 2 piston Q45/J30 and the 1 piston Maxima? If they are then this will be a very nice upgrade.
12-12-2005, 10:49 AM
#25
Originally Posted by Jeff92se
The stock MS is enough for the 300z calipers. I've run my setup for almost 2 years. Drive a maxima with 13" rotors and 300z calipers and report back if you think they aren't up to the task. The difference in bore diamters for the maxima/300z is 1/16". The only reason I bring this possibility up is to still allow great breaking but with more wheel options
Just a thought.....
12-12-2005, 10:55 AM
#27
If it were just plug and play to upgrade to a 300z MC, I would. But the mounting and the lines are completely different. It's way too much work for that ever so slight diff in pedal travel. The Q45/J30 have 1/2 of the pistons the 300z has. And I don't think their MC is any larger anyway. I'll have to look. But I know it's not any bigger than the 300z
Originally Posted by Cutler
I am sure the maxima MC is up to the task, but could a j30 or q45 MC be more advantageous? When I upgraded the brakes on my 91 SE-R to NX2k brakes, I upgraded my MC to the Altima MC. It made a nice difference. It's just a thought and may be a nice upgrade that no one thought about until now....
Just a thought.....
Just a thought.....
12-12-2005, 11:38 AM
#28
ok guys a few things here from the maxima brake master:
0. If you don't have SS brake lines (and Speedbleeders, IMHO) you need to go get them ASAP if you want better braking, that's a NO ARGUMENT discussion.
1. 300zx brakes don't necessarily need bigger rotors or those brakets to extend them out, they fit in stock caliper location perfectly, BUT a small modification to rotors (20mm maxima thicknes vs 30mm for 300zx rotors) is required by milling the rotor diameter 4-5mm. ($20/rotor in a machine shop)
why would you want to extend the caliper further out if you don't have to?
(only reason i can think of to get bigger rotors, to increase surface area so it cools better, but that's extra weight, and you don't want to drive with heavier calipers, heavier rotors, and heavier wheels, unless you specifically WANT to)
and you can still use a 16in wheel, not 17's for those days when you go to the track with 300zx, more on wheels see 4.
2. 300zx brakes offer MUCH better brake pad selection than J30/Q45 and offer more brake cylinder pressure to the rotors than ANY two piston caliper including the DIRECT FIT A32 Cefiro Dual Piston Calipers, i still have them in a box
3. 300zx brake master cylinder is at 17/16 with 850lf vs 15/16 with 800lf of maxima, a 1/8 difference, significant when you increase from 4 total caliper pistons to 10 caliper pistons, furthermore the REAR brakes work much better due to 300zx proportioning valve (more clamping force also goes to the rear brakes, i can actually feel them working now!)
4. 300zx needs bigger offset wheels, due to two pistons on one side of the caliper and two on the outside of the caliper. why not use N/A 300zx rims like i did, 16.0lbs each with size of 16x7.5 - rims will run you about $300 on ebay. if you have stock 215/55/16 tires they will transfer right over too. although i'd rather use the 225/50/16's with Z32 Rims.
5. Let's talk about weight everybody likes to save a little off the car, then why would you replace the already heavy iron stock calipers with even heavier two piston iron calipers? aluminum 300zx's weight as much as the stock single piston brakes (but you get an extra 3 pistons and a very well distributed clamping force from both sides equally, other than even having TWO pistons clamping on ONE side.)
6. looks. everybody wants their BIG brakes to look good, 4 piston calipers stick out and look much better than the stockers painted ANY color. besides you will have the BEST factory NISSAN calipers made for the 300zx, R32 Skyline, and that will get you more points at shows/ and more peace of mind because THEY WILL SAVE YOUR LIFE when that uncertain time comes when you need to bury than pedal in, to stop from hitting something (just be buckled up or YOU WILL FLY OUT THROUGH THE WINDSHIELD, no kidding!)
the only thing i don't like about my brakes now is the stock rear POS weak calipers which will be replaced with 2-piston 300zx rear calipers and 300zx E-brake drum assembly after the winter. then i'll have complete 300zx brakes conversion
and some statistics:
300zx ~3600lbs, 300hp 12 pistons total in all calipers
Maxima ~3100lbs, 190hp 4 pistons total in all calipers
which would you rather have stopping your Maxima?
one more question.
which brakes are the Supercharged/Turbocharged people running? stock? is that really such a good idea with all that power?
ANYBODY want to please chime in and prove me wrong???
P.s. Brakes are a big confidence booster, you can drive faster and harder if you know you have great brakes, and then the maxima becomes a Fun car to drive. i have tons of pics of my installs if somebody wants pics, or to weigh your options, pm me
-vipervadim
0. If you don't have SS brake lines (and Speedbleeders, IMHO) you need to go get them ASAP if you want better braking, that's a NO ARGUMENT discussion.
1. 300zx brakes don't necessarily need bigger rotors or those brakets to extend them out, they fit in stock caliper location perfectly, BUT a small modification to rotors (20mm maxima thicknes vs 30mm for 300zx rotors) is required by milling the rotor diameter 4-5mm. ($20/rotor in a machine shop)
why would you want to extend the caliper further out if you don't have to?
(only reason i can think of to get bigger rotors, to increase surface area so it cools better, but that's extra weight, and you don't want to drive with heavier calipers, heavier rotors, and heavier wheels, unless you specifically WANT to)
and you can still use a 16in wheel, not 17's for those days when you go to the track with 300zx, more on wheels see 4.
2. 300zx brakes offer MUCH better brake pad selection than J30/Q45 and offer more brake cylinder pressure to the rotors than ANY two piston caliper including the DIRECT FIT A32 Cefiro Dual Piston Calipers, i still have them in a box
3. 300zx brake master cylinder is at 17/16 with 850lf vs 15/16 with 800lf of maxima, a 1/8 difference, significant when you increase from 4 total caliper pistons to 10 caliper pistons, furthermore the REAR brakes work much better due to 300zx proportioning valve (more clamping force also goes to the rear brakes, i can actually feel them working now!)
4. 300zx needs bigger offset wheels, due to two pistons on one side of the caliper and two on the outside of the caliper. why not use N/A 300zx rims like i did, 16.0lbs each with size of 16x7.5 - rims will run you about $300 on ebay. if you have stock 215/55/16 tires they will transfer right over too. although i'd rather use the 225/50/16's with Z32 Rims.
5. Let's talk about weight
everybody likes to save a little off the car, then why would you replace the already heavy iron stock calipers with even heavier two piston iron calipers? aluminum 300zx's weight as much as the stock single piston brakes (but you get an extra 3 pistons and a very well distributed clamping force from both sides equally, other than even having TWO pistons clamping on ONE side.)6. looks. everybody wants their BIG brakes to look good, 4 piston calipers stick out and look much better than the stockers painted ANY color. besides you will have the BEST factory NISSAN calipers made for the 300zx, R32 Skyline, and that will get you more points at shows/ and more peace of mind because THEY WILL SAVE YOUR LIFE when that uncertain time comes when you need to bury than pedal in, to stop from hitting something (just be buckled up or YOU WILL FLY OUT THROUGH THE WINDSHIELD, no kidding!)
the only thing i don't like about my brakes now is the stock rear POS weak calipers which will be replaced with 2-piston 300zx rear calipers and 300zx E-brake drum assembly after the winter. then i'll have complete 300zx brakes conversion
and some statistics:
300zx ~3600lbs, 300hp 12 pistons total in all calipers
Maxima ~3100lbs, 190hp 4 pistons total in all calipers
which would you rather have stopping your Maxima?
one more question.
which brakes are the Supercharged/Turbocharged people running? stock? is that really such a good idea with all that power?
ANYBODY want to please chime in and prove me wrong???
P.s. Brakes are a big confidence booster, you can drive faster and harder if you know you have great brakes, and then the maxima becomes a Fun car to drive. i have tons of pics of my installs if somebody wants pics, or to weigh your options, pm me
-vipervadim
12-12-2005, 11:53 AM
#29
Originally Posted by vipervadim
ok guys a few things here from the maxima brake master:
0. If you don't have SS brake lines (and Speedbleeders, IMHO) you need to go get them ASAP if you want better braking, that's a NO ARGUMENT discussion.
1. 300zx brakes don't necessarily need bigger rotors or those brakets to extend them out, they fit in stock caliper location perfectly, BUT a small modification to rotors (20mm maxima thicknes vs 30mm for 300zx rotors) is required by milling the rotor diameter 4-5mm. ($20/rotor in a machine shop)
why would you want to extend the caliper further out if you don't have to?
(only reason i can think of to get bigger rotors, to increase surface area so it cools better, but that's extra weight, and you don't want to drive with heavier calipers, heavier rotors, and heavier wheels, unless you specifically WANT to)
and you can still use a 16in wheel, not 17's for those days when you go to the track with 300zx, more on wheels see 4.
2. 300zx brakes offer MUCH better brake pad selection than J30/Q45 and offer more brake cylinder pressure to the rotors than ANY two piston caliper including the DIRECT FIT A32 Cefiro Dual Piston Calipers, i still have them in a box
3. 300zx brake master cylinder is at 17/16 with 850lf vs 15/16 with 800lf of maxima, a 1/8 difference, significant when you increase from 4 total caliper pistons to 10 caliper pistons, furthermore the REAR brakes work much better due to 300zx proportioning valve (more clamping force also goes to the rear brakes, i can actually feel them working now!)
4. 300zx needs bigger offset wheels, due to two pistons on one side of the caliper and two on the outside of the caliper. why not use N/A 300zx rims like i did, 16.0lbs each with size of 16x7.5 - rims will run you about $300 on ebay. if you have stock 215/55/16 tires they will transfer right over too. although i'd rather use the 225/50/16's with Z32 Rims.
5. Let's talk about weight everybody likes to save a little off the car, then why would you replace the already heavy iron stock calipers with even heavier two piston iron calipers? aluminum 300zx's weight as much as the stock single piston brakes (but you get an extra 3 pistons and a very well distributed clamping force from both sides equally, other than even having TWO pistons clamping on ONE side.)
6. looks. everybody wants their BIG brakes to look good, 4 piston calipers stick out and look much better than the stockers painted ANY color. besides you will have the BEST factory NISSAN calipers made for the 300zx, R32 Skyline, and that will get you more points at shows/ and more peace of mind because THEY WILL SAVE YOUR LIFE when that uncertain time comes when you need to bury than pedal in, to stop from hitting something (just be buckled up or YOU WILL FLY OUT THROUGH THE WINDSHIELD, no kidding!)
the only thing i don't like about my brakes now is the stock rear POS weak calipers which will be replaced with 2-piston 300zx rear calipers and 300zx E-brake drum assembly after the winter. then i'll have complete 300zx brakes conversion
and some statistics:
300zx ~3600lbs, 300hp 12 pistons total in all calipers
Maxima ~3100lbs, 190hp 4 pistons total in all calipers
which would you rather have stopping your Maxima?
one more question.
which brakes are the Supercharged/Turbocharged people running? stock? is that really such a good idea with all that power?
ANYBODY want to please chime in and prove me wrong???
P.s. Brakes are a big confidence booster, you can drive faster and harder if you know you have great brakes, and then the maxima becomes a Fun car to drive. i have tons of pics of my installs if somebody wants pics, or to weigh your options, pm me
-vipervadim
0. If you don't have SS brake lines (and Speedbleeders, IMHO) you need to go get them ASAP if you want better braking, that's a NO ARGUMENT discussion.
1. 300zx brakes don't necessarily need bigger rotors or those brakets to extend them out, they fit in stock caliper location perfectly, BUT a small modification to rotors (20mm maxima thicknes vs 30mm for 300zx rotors) is required by milling the rotor diameter 4-5mm. ($20/rotor in a machine shop)
why would you want to extend the caliper further out if you don't have to?
(only reason i can think of to get bigger rotors, to increase surface area so it cools better, but that's extra weight, and you don't want to drive with heavier calipers, heavier rotors, and heavier wheels, unless you specifically WANT to)
and you can still use a 16in wheel, not 17's for those days when you go to the track with 300zx, more on wheels see 4.
2. 300zx brakes offer MUCH better brake pad selection than J30/Q45 and offer more brake cylinder pressure to the rotors than ANY two piston caliper including the DIRECT FIT A32 Cefiro Dual Piston Calipers, i still have them in a box
3. 300zx brake master cylinder is at 17/16 with 850lf vs 15/16 with 800lf of maxima, a 1/8 difference, significant when you increase from 4 total caliper pistons to 10 caliper pistons, furthermore the REAR brakes work much better due to 300zx proportioning valve (more clamping force also goes to the rear brakes, i can actually feel them working now!)
4. 300zx needs bigger offset wheels, due to two pistons on one side of the caliper and two on the outside of the caliper. why not use N/A 300zx rims like i did, 16.0lbs each with size of 16x7.5 - rims will run you about $300 on ebay. if you have stock 215/55/16 tires they will transfer right over too. although i'd rather use the 225/50/16's with Z32 Rims.
5. Let's talk about weight
everybody likes to save a little off the car, then why would you replace the already heavy iron stock calipers with even heavier two piston iron calipers? aluminum 300zx's weight as much as the stock single piston brakes (but you get an extra 3 pistons and a very well distributed clamping force from both sides equally, other than even having TWO pistons clamping on ONE side.)6. looks. everybody wants their BIG brakes to look good, 4 piston calipers stick out and look much better than the stockers painted ANY color. besides you will have the BEST factory NISSAN calipers made for the 300zx, R32 Skyline, and that will get you more points at shows/ and more peace of mind because THEY WILL SAVE YOUR LIFE when that uncertain time comes when you need to bury than pedal in, to stop from hitting something (just be buckled up or YOU WILL FLY OUT THROUGH THE WINDSHIELD, no kidding!)
the only thing i don't like about my brakes now is the stock rear POS weak calipers which will be replaced with 2-piston 300zx rear calipers and 300zx E-brake drum assembly after the winter. then i'll have complete 300zx brakes conversion
and some statistics:
300zx ~3600lbs, 300hp 12 pistons total in all calipers
Maxima ~3100lbs, 190hp 4 pistons total in all calipers
which would you rather have stopping your Maxima?
one more question.
which brakes are the Supercharged/Turbocharged people running? stock? is that really such a good idea with all that power?
ANYBODY want to please chime in and prove me wrong???
P.s. Brakes are a big confidence booster, you can drive faster and harder if you know you have great brakes, and then the maxima becomes a Fun car to drive. i have tons of pics of my installs if somebody wants pics, or to weigh your options, pm me
-vipervadim
Nobody is talking down the 300ZX BBK (it kinda sounds like you are defending it), the J30/Q45 combo just offers a more cost-effective solution w/o going overkill on the 300ZX upgrade....just offering us another option.
12-12-2005, 11:53 AM
#30
Originally Posted by vipervadim
0. If you don't have SS brake lines (and Speedbleeders, IMHO) you need to go get them ASAP if you want better braking, that's a NO ARGUMENT discussion.
1. 300zx brakes don't necessarily need bigger rotors or those brakets to extend them out, they fit in stock caliper location perfectly, BUT a small modification to rotors (20mm maxima thicknes vs 30mm for 300zx rotors) is required by milling the rotor diameter 4-5mm. ($20/rotor in a machine shop)
And the modification is to the rotor's DIAMETER/RADIUS. Not the rotor's THICKNESS. You are talking about two very different things.
why would you want to extend the caliper further out if you don't have to?
(only reason i can think of to get bigger rotors, to increase surface area so it cools better, but that's extra weight, and you don't want to drive with heavier calipers, heavier rotors, and heavier wheels, unless you specifically WANT to)
(only reason i can think of to get bigger rotors, to increase surface area so it cools better, but that's extra weight, and you don't want to drive with heavier calipers, heavier rotors, and heavier wheels, unless you specifically WANT to)
2. 300zx brakes offer MUCH better brake pad selection than J30/Q45 and offer more brake cylinder pressure to the rotors than ANY two piston caliper including the DIRECT FIT A32 Cefiro Dual Piston Calipers, i still have them in a box
3. 300zx brake master cylinder is at 17/16 with 850lf vs 15/16 with 800lf of maxima, a 1/8 difference, significant when you increase from 4 total caliper pistons to 10 caliper pistons, furthermore the REAR brakes work much better due to 300zx proportioning valve (more clamping force also goes to the rear brakes, i can actually feel them working now!)
4. 300zx needs bigger offset wheels, due to two pistons on one side of the caliper and two on the outside of the caliper. why not use N/A 300zx rims like i did, 16.0lbs each with size of 16x7.5 - rims will run you about $300 on ebay. if you have stock 215/55/16 tires they will transfer right over too. although i'd rather use the 225/50/16's with Z32 Rims.
5. Let's talk about weight everybody likes to save a little off the car, then why would you replace the already heavy iron stock calipers with even heavier two piston iron calipers? aluminum 300zx's weight as much as the stock single piston brakes (but you get an extra 3 pistons and a very well distributed clamping force from both sides equally, other than even having TWO pistons clamping on ONE side.)
everybody likes to save a little off the car, then why would you replace the already heavy iron stock calipers with even heavier two piston iron calipers? aluminum 300zx's weight as much as the stock single piston brakes (but you get an extra 3 pistons and a very well distributed clamping force from both sides equally, other than even having TWO pistons clamping on ONE side.)
6. looks. everybody wants their BIG brakes to look good, 4 piston calipers stick out and look much better than the stockers painted ANY color. besides you will have the BEST factory NISSAN calipers made for the 300zx, R32 Skyline, and that will get you more points at shows/ and more peace of mind because THEY WILL SAVE YOUR LIFE when that uncertain time comes when you need to bury than pedal in, to stop from hitting something (just be buckled up or YOU WILL FLY OUT THROUGH THE WINDSHIELD, no kidding!)
the only thing i don't like about my brakes now is the stock rear POS weak calipers which will be replaced with 2-piston 300zx rear calipers and 300zx E-brake drum assembly after the winter. then i'll have complete 300zx brakes conversion
12-12-2005, 12:07 PM
#31
Originally Posted by Jeff92se
If it were just plug and play to upgrade to a 300z MC, I would. But the mounting and the lines are completely different. It's way too much work for that ever so slight diff in pedal travel. The Q45/J30 have 1/2 of the pistons the 300z has. And I don't think their MC is any larger anyway. I'll have to look. But I know it's not any bigger than the 300z
12-12-2005, 12:14 PM
#32
Jeff if you read carefully i never mentioned anything about milling thickness, i wrote the difference in maxima/300zx thickness, the milling of 4-5mm is from the diameter like I stated. please re-read carefully
yes i do have pics of everything installed, i just don't have any on the web. i can send you e-mail if you are interested.
the 300zx MC is direct swap you just need to have ***** to undertake the (messy, lots of brake fluid) swap. most people on the org talk about doing things, only few have those aforementioned ***** to rip into their maxima, especially if it's something people say can't be done.
my whole brake swap cost me about 500. Matt's rear brake setup is close to $1000, and that's about the cost of a 3.5L so which would you think i'd do first if i had the money to spend?
about brake pressure:
i had the Cefiro 2-pistons installed before i went the 300zx route. there is A HUGE feel difference between the 2-piston and 4-piston even on the stock MC. with the 300zx the proportioning is better, so brake bias is not so much to the front as stock MC.
about wheels:
you WILL need to run more offset wheels than stock maxima wheels to clear the 300zx calipers. 300zx are a good affordable direct replacement if you don't have $1000 to spend on bigger rims and tires.
on surface area:
if you have bigger rotors then why is the surface area of the pad contact to the rotor still the same? it will only be as big as the pad gets, your calipers just sit more outward than mine
where did you get the info about z32 brakes having less clamping? link please?
yes i do have pics of everything installed, i just don't have any on the web. i can send you e-mail if you are interested.
the 300zx MC is direct swap you just need to have ***** to undertake the (messy, lots of brake fluid) swap. most people on the org talk about doing things, only few have those aforementioned ***** to rip into their maxima, especially if it's something people say can't be done.
my whole brake swap cost me about 500. Matt's rear brake setup is close to $1000, and that's about the cost of a 3.5L
so which would you think i'd do first if i had the money to spend? about brake pressure:
i had the Cefiro 2-pistons installed before i went the 300zx route. there is A HUGE feel difference between the 2-piston and 4-piston even on the stock MC. with the 300zx the proportioning is better, so brake bias is not so much to the front as stock MC.
about wheels:
you WILL need to run more offset wheels than stock maxima wheels to clear the 300zx calipers. 300zx are a good affordable direct replacement if you don't have $1000 to spend on bigger rims and tires.
on surface area:
if you have bigger rotors then why is the surface area of the pad contact to the rotor still the same? it will only be as big as the pad gets, your calipers just sit more outward than mine
where did you get the info about z32 brakes having less clamping? link please?
12-12-2005, 12:28 PM
#33
Originally Posted by vipervadim
Jeff if you read carefully i never mentioned anything about milling thickness, i wrote the difference in maxima/300zx thickness, the milling of 4-5mm is from the diameter like I stated. please re-read carefully )
yes i do have pics of everything installed, i just don't have any on the web. i can send you e-mail if you are interested.
the 300zx MC is direct swap you just need to have ***** to undertake the (messy, lots of brake fluid) swap. most people on the org talk about doing things, only few have those aforementioned ***** to rip into their maxima, especially if it's something people say can't be done.
my whole brake swap cost me about 500. Matt's rear brake setup is close to $1000, and that's about the cost of a 3.5L so which would you think i'd do first if i had the money to spend?
about brake pressure:
i had the Cefiro 2-pistons installed before i went the 300zx route. there is A HUGE feel difference between the 2-piston and 4-piston even on the stock MC. with the 300zx the proportioning is better, so brake bias is not so much to the front as stock MC.
i had the Cefiro 2-pistons installed before i went the 300zx route. there is A HUGE feel difference between the 2-piston and 4-piston even on the stock MC. with the 300zx the proportioning is better, so brake bias is not so much to the front as stock MC.
about wheels:
you WILL need to run more offset wheels than stock maxima wheels to clear the 300zx calipers. 300zx are a good affordable direct replacement if you don't have $1000 to spend on bigger rims and tires.
you WILL need to run more offset wheels than stock maxima wheels to clear the 300zx calipers. 300zx are a good affordable direct replacement if you don't have $1000 to spend on bigger rims and tires.
on surface area:
if you have bigger rotors then why is the surface area of the pad contact to the rotor still the same? it will only be as big as the pad gets, your calipers just sit more outward than mine :
if you have bigger rotors then why is the surface area of the pad contact to the rotor still the same? it will only be as big as the pad gets, your calipers just sit more outward than mine :
Ever wonder why all high performance cars run larger rotors now? Torque arm advantage is exactly why AEM offers larger rotor package w/ stock calipers for the hondas. It's also why there is a larger rotor package for the G35 using the oem calipers. It's why Matt offers the 6-gen rotor package that uses the stock 5-gen calipers.
ie..http://www.racingbrake.com/main/prod...ct_release.asp G35 / Z upgrade.
where did you get the info about z32 brakes having less clamping? link please?
12-12-2005, 06:36 PM
#34
Originally Posted by es_amixam
The pads are different for sure. They are slightly wider and the notches holding them to the caliper bracket are smaller.
Hello McFly... I said you use the Maxima torque member which is what holds the pads, thus you use maxima pads...
12-12-2005, 07:52 PM
#35
anyone know if the q45/j30 clipers will work witht he relocation brackets and 04 rotors?, i know where i can get a set of each at the j-yard that im going to tomo. if not, ill get them anyway, either way ill have at least one set to sell
12-12-2005, 08:39 PM
#36
No. Why does everyone try to mix and match so much. My brackets are designed for the 13" Cobra rotors. The 6-gen rotors are too small in dia and have the wrong offset
Originally Posted by ColdSHO
anyone know if the q45/j30 clipers will work witht he relocation brackets and 04 rotors?, i know where i can get a set of each at the j-yard that im going to tomo. if not, ill get them anyway, either way ill have at least one set to sell
12-13-2005, 06:21 AM
#37
im thinking of mixing and matching casue id liek the best brakes(like everyone else) but i need them to fit under stock 17s, i figured the j30s to be smaller than the z32 which we all know wont fit. so it seemed the j30/q45 calipers+relocation brackets+04 rotors+good pads-stock 17inch rim clearance=the best setup.
12-13-2005, 11:11 AM
#38
Actually he used a combination of J30 2 piston cylinder body and maxima torque member. He's using a different method to avoid having the rotor shaved.
Originally Posted by Nealoc187
Hello McFly... I said you use the Maxima torque member which is what holds the pads, thus you use maxima pads...
12-13-2005, 04:07 PM
#39
Senior Member
Join Date: Aug 2000
Posts: 2,151
Jeff, I know you are trying to sell your brackets here.
Can't you use Matt Blehms Brackets, then J30 calipers will work with 12.6" rotors? Am I missing something here. A friend of mine has 12.6" 350Z rotors that he is giving Neal for free. We figured those rotors and J30 Calipers would be a nice upgrade over stock.
Can't you use Matt Blehms Brackets, then J30 calipers will work with 12.6" rotors? Am I missing something here. A friend of mine has 12.6" 350Z rotors that he is giving Neal for free. We figured those rotors and J30 Calipers would be a nice upgrade over stock.