G35 Manifold fitment issues
02-27-2006 | 10:20 PM
#1
G35 Manifold fitment issues
Hey, i'm doing my 3.5 swap soon, and I can get a good deal on a G35 manifold (upper and lower) for $200. Does anyone know by how much the hood wouldn't clear?
I'm thinking about either using hood spacers or grinding down the hood frame, or both.
I don't really want to use a hood scoop, but I might have a custom hood setup if the fitment is way off.
Let me know, i'm interested in doing it, as the G35's and Z's make so much more HP, and if I add a plenum spacer, even more. I think sacrificing the hood would be worth it.
-Freddy
I'm thinking about either using hood spacers or grinding down the hood frame, or both.
I don't really want to use a hood scoop, but I might have a custom hood setup if the fitment is way off.
Let me know, i'm interested in doing it, as the G35's and Z's make so much more HP, and if I add a plenum spacer, even more. I think sacrificing the hood would be worth it.
-Freddy
02-28-2006 | 07:59 AM
#4
question's still not answered, and I don't know anyone with a 3.5 or G35.
I looked at a few threads, and no one really said by how much it didn't fit, and since i'm using both the upper and lower, bolting on wouldn't be an issue.
bump.............
I looked at a few threads, and no one really said by how much it didn't fit, and since i'm using both the upper and lower, bolting on wouldn't be an issue.
bump.............
02-28-2006 | 10:06 AM
#5
since i dont think anyone has done this yet, your going to have to measure it and see for yourself. I say take the plunge could always resell them. But you would have some bragging rights if you were the first 3.5 4thgen with both manifolds and a spacer. I drool over this setup.
02-28-2006 | 10:32 AM
#7
A little off topic, but I think Nismo3112 is going to be experimenting with something similar. I think in one of his posts he had gotten his hands on a 350Z intake plenum. I didn't think it was possible to swap the intake manifolds off of rwd cars (Z, G35) with a 4.5 gen.
02-28-2006 | 10:40 AM
#8
I guess it depends on what G35. The 03-04 are rated at 260hp.
Originally Posted by tavarish
Hey, i'm doing my 3.5 swap soon, and I can get a good deal on a G35 manifold (upper and lower) for $200. Does anyone know by how much the hood wouldn't clear?
I'm thinking about either using hood spacers or grinding down the hood frame, or both.
I don't really want to use a hood scoop, but I might have a custom hood setup if the fitment is way off.
Let me know, i'm interested in doing it, as the G35's and Z's make so much more HP, and if I add a plenum spacer, even more. I think sacrificing the hood would be worth it.
-Freddy
I'm thinking about either using hood spacers or grinding down the hood frame, or both.
I don't really want to use a hood scoop, but I might have a custom hood setup if the fitment is way off.
Let me know, i'm interested in doing it, as the G35's and Z's make so much more HP, and if I add a plenum spacer, even more. I think sacrificing the hood would be worth it.
-Freddy
02-28-2006 | 10:43 AM
#9
I guess it depends on what G35. The 03-04 are rated at 260hp. And from the dynos I see here, the 3.5 maxima seems to be dynoing at around the same #s.
The 05+ Gs and Zs depending on the model, some got the rev up engine and VTCs on the exhaust as well as the intake cam? So that's where the extra hp comes from?
The 05+ Gs and Zs depending on the model, some got the rev up engine and VTCs on the exhaust as well as the intake cam? So that's where the extra hp comes from?
Originally Posted by tavarish
Hey, i'm doing my 3.5 swap soon, and I can get a good deal on a G35 manifold (upper and lower) for $200. Does anyone know by how much the hood wouldn't clear?
I'm thinking about either using hood spacers or grinding down the hood frame, or both.
I don't really want to use a hood scoop, but I might have a custom hood setup if the fitment is way off.
Let me know, i'm interested in doing it, as the G35's and Z's make so much more HP, and if I add a plenum spacer, even more. I think sacrificing the hood would be worth it.
-Freddy
I'm thinking about either using hood spacers or grinding down the hood frame, or both.
I don't really want to use a hood scoop, but I might have a custom hood setup if the fitment is way off.
Let me know, i'm interested in doing it, as the G35's and Z's make so much more HP, and if I add a plenum spacer, even more. I think sacrificing the hood would be worth it.
-Freddy
02-28-2006 | 11:48 AM
#10
it says the 03 G35's are rated at 280hp.
http://www.edmunds.com/used/2003/inf...767/specs.html
Also, the FX35 manifolds would be the same, correct, as they're also the RWD 3.5's rated at 280hp.
i can't afford the 300hp version, and it's super hard to find.
i don't think the fitment would be that much of an issue, and maybe i'll pay a visit to my local nissan dealer and take some measurements.
http://www.edmunds.com/used/2003/inf...767/specs.html
Also, the FX35 manifolds would be the same, correct, as they're also the RWD 3.5's rated at 280hp.
i can't afford the 300hp version, and it's super hard to find.
i don't think the fitment would be that much of an issue, and maybe i'll pay a visit to my local nissan dealer and take some measurements.
02-28-2006 | 11:53 AM
#11
03 autos were rated at 260. I'm not sure if the auto/manual manifolds were diff. I've not seen any manifold differential disscussion on the G boards UNTIL the 05 6MT rev up engine (298hp) is mentioned. Slightly diff lower (lower of the 2 upper pieces) portion.
But even then, the G/Z manifolds seem to suffer from 3 front bank leaness. Thus the invention of aftermarket plenums and spacers.
Also from the limited info I've seen, the 3.5 maximas and the 03-04 G sedans seem to dyno similar.
But even then, the G/Z manifolds seem to suffer from 3 front bank leaness. Thus the invention of aftermarket plenums and spacers.
Also from the limited info I've seen, the 3.5 maximas and the 03-04 G sedans seem to dyno similar.
02-28-2006 | 12:00 PM
#12
ahh....i see what you mean, the sedans were rated at 260hp. the coupes were 280. i doubt there were any real manifold changes, but i'll do my research, as i still have lots of time for this setup.
02-28-2006 | 12:27 PM
#13
I got plenums from a 287 hp Z. I will let you guys know how it turns out once Spring break comes around the corner.
Here is a quick comparo between the 300hp version of the plenum (left) and the 287hp version. I have seen dyno's where the 287 version actually has more area under the curve.
Here is a quick comparo between the 300hp version of the plenum (left) and the 287hp version. I have seen dyno's where the 287 version actually has more area under the curve.
02-28-2006 | 12:49 PM
#14
very cool, i'll be looking forward to doing this...maybe we can start a club of maximas with weird hoods.
If hood clearance is really an issue, you can most likely make a fiberglass hood with a bit of a flare, not a scoop, but just an accenting flare. It wouldn't look too much different from stock.
Or, if you want to keep the stock hood, i was thinking you can just use some hood spacers (like some Z guys do), or add washers to the bolts in the crossmember, lowering the engine. (I dont know how safe that would be, however. )
If hood clearance is really an issue, you can most likely make a fiberglass hood with a bit of a flare, not a scoop, but just an accenting flare. It wouldn't look too much different from stock.
Or, if you want to keep the stock hood, i was thinking you can just use some hood spacers (like some Z guys do), or add washers to the bolts in the crossmember, lowering the engine. (I dont know how safe that would be, however. )
02-28-2006 | 02:34 PM
#19
Guest
Posts: n/a
nismo3112 quick question. i nthat pic that you have posted is that the lower and upper plenum from a 350z/g35? also which lower part of the plenum are you going to use? The reason for that question is that the revup plenum is good for top end but the regular plenum is good all around the curve. if you want serious top end you want to use the revup version. if you are going to use the regular version get a spacer and call it a day.
and about the hood clearance, that is nto a big problem. Just get a scoop and cut a hole in your hood.
Next is the placement of the tb. It will face the other way and the highest point is the tb and the part of the plenum next to the tb. So the piping will have to run towards the coolant overflow tank.
also did anybody notice that the front valve cover is different as well?
here is a pic of a photoshop i did.
and about the hood clearance, that is nto a big problem. Just get a scoop and cut a hole in your hood.
Next is the placement of the tb. It will face the other way and the highest point is the tb and the part of the plenum next to the tb. So the piping will have to run towards the coolant overflow tank.
also did anybody notice that the front valve cover is different as well?
here is a pic of a photoshop i did.
02-28-2006 | 02:55 PM
#20
Originally Posted by vsamoylov
nismo3112 quick question. i nthat pic that you have posted is that the lower and upper plenum from a 350z/g35? also which lower part of the plenum are you going to use? The reason for that question is that the revup plenum is good for top end but the regular plenum is good all around the curve. if you want serious top end you want to use the revup version. if you are going to use the regular version get a spacer and call it a day.
and about the hood clearance, that is nto a big problem. Just get a scoop and cut a hole in your hood.
Next is the placement of the tb. It will face the other way and the highest point is the tb and the part of the plenum next to the tb. So the piping will have to run towards the coolant overflow tank.
also did anybody notice that the front valve cover is different as well?
here is a pic of a photoshop i did.
[IMG]http://img.photobucket.com/albums/v720/vsamoylov/DSC00961.jpg[IMG]
and about the hood clearance, that is nto a big problem. Just get a scoop and cut a hole in your hood.
Next is the placement of the tb. It will face the other way and the highest point is the tb and the part of the plenum next to the tb. So the piping will have to run towards the coolant overflow tank.
also did anybody notice that the front valve cover is different as well?
here is a pic of a photoshop i did.
[IMG]http://img.photobucket.com/albums/v720/vsamoylov/DSC00961.jpg[IMG]
02-28-2006 | 03:05 PM
#23
Originally Posted by vsamoylov
what lower are you using? injectors?
BTW, I will be using DE-K injectors.
02-28-2006 | 04:09 PM
#25
Originally Posted by Nismo3112
350Z lower. It is very different from the 5.5 gen lower, it also looks like the 5.5 gen fuel rail will bolt on, but i'm not sure, I will know for sure in a few weeks when I start the project.
BTW, I will be using DE-K injectors.
BTW, I will be using DE-K injectors.
02-28-2006 | 05:15 PM
#29
Originally Posted by diymaximakid
no not true completely. dek and rwd injectors are the same and fwd maxima injectors are different.IIRC
DE-K injectors = more fuel than FWD 3.5 jectors at the same given fuel psi.
02-28-2006 | 05:29 PM
#31
I see someone already dug up the old Emax thread from the grave.
Yes this was attempted about four years ago and the hood does not clear.
However I am going to be testing one on the dyno soon now that I finally got my car back from the body shop.
Yes this was attempted about four years ago and the hood does not clear.
However I am going to be testing one on the dyno soon now that I finally got my car back from the body shop.
02-28-2006 | 06:40 PM
#33
Originally Posted by SR20DEN
I see someone already dug up the old Emax thread from the grave.
Yes this was attempted about four years ago and the hood does not clear.
However I am going to be testing one on the dyno soon now that I finally got my car back from the body shop.
Yes this was attempted about four years ago and the hood does not clear.
However I am going to be testing one on the dyno soon now that I finally got my car back from the body shop.
02-28-2006 | 06:41 PM
#34
Guest
Posts: n/a
Originally Posted by Nismo3112
I am just going to cut the hood where need be, and let it stick out of the hood. And if it doesn't look too outrageous i'll keep it like that.
02-28-2006 | 07:32 PM
#35
Originally Posted by Nismo3112
I am just going to cut the hood where need be, and let it stick out of the hood. And if it doesn't look too outrageous i'll keep it like that.
And extend the TB wires @ MAF wires?
