3.5 shortblock + 3.0 heads
#1
3.5 shortblock + 3.0 heads
I have searched and read and know alot of people never post and alot of info never makes it to the org. Has anyone ever done or knows someone that has done this setup either dyno'd or tracked the car.
I read alot of old threads and they kinda leave you hanging or my search skills just suck. I read about the nismo heads with 3.0 combustion chambers and seen it was good for 12-1 cr with stock pistons and 13.X-1 with aftermarket and got me to thinking I have a crap load of parts sitting around.
I was thinking about taking a 3.5 shortblock, cleaning up the casting flaws and very light porting on some 3.0 heads, throwing in some jwt knockoff cams and hr valve springs, meth with either a dek uim or de usim with a sheet metal pelnum and a pftb just to see what is does.
I read alot of old threads and they kinda leave you hanging or my search skills just suck. I read about the nismo heads with 3.0 combustion chambers and seen it was good for 12-1 cr with stock pistons and 13.X-1 with aftermarket and got me to thinking I have a crap load of parts sitting around.
I was thinking about taking a 3.5 shortblock, cleaning up the casting flaws and very light porting on some 3.0 heads, throwing in some jwt knockoff cams and hr valve springs, meth with either a dek uim or de usim with a sheet metal pelnum and a pftb just to see what is does.
Last edited by t6378tp; 11-02-2010 at 02:25 PM.
#6
^ been there done that + alot of people are followers ^
want to try something different since I have the parts sitting around but honestly I would not suggest going out and buy the parts to try this
want to try something different since I have the parts sitting around but honestly I would not suggest going out and buy the parts to try this
#7
The main reason why people don't make the hybrid is the fact that the VQ35 heads flow better. At least I think that is the reason. lol
If you can make the VQ30 heads flow what the stock VQ35 heads flow, then you will be in good shape. Should make some nice power with the higher compression and cams.
DO IT!!!
I'm interested.
If you can make the VQ30 heads flow what the stock VQ35 heads flow, then you will be in good shape. Should make some nice power with the higher compression and cams.
DO IT!!!
I'm interested.
#8
From what i hear the 3.5 heads out flow the 3.0 heads by so much that u can take the heads off a 3.5 put them on a 3.0 and even thou compression will fall a bit it will still theoretically make more power.
I think if u put that to the test in RL it will make less but people and their theories.
I think if u put that to the test in RL it will make less but people and their theories.
#9
now if you want to rev to 8k thats another story but what I really want is to hear from people that have done it cause they ARE out there
Last edited by t6378tp; 11-02-2010 at 07:46 PM.
#10
Here is some data on VQ30 vs. VQ35 head flow.
http://forums.maxima.org/all-motor/3...flow-data.html
The VQ30 exhaust ports actually outflow the VQ35 exhaust ports. Intake ports are a different story though.
http://forums.maxima.org/all-motor/3...flow-data.html
The VQ30 exhaust ports actually outflow the VQ35 exhaust ports. Intake ports are a different story though.
#12
#15
We got a car down here with a 3.5 long block, ported 3.0 heads, 3.5 cams and FWD VQ35 intake manifold. It also has a JWT ecu with 7000k rev limit and OBX 3.5 equal length headers down to just a 2 1/4" exhaust. It's pretty quick. It runs side by side with another local max with:
* SSIM
* VQ35DE block and heads
* VQ35HR valve springs double-seated
* Debuloz Ebay JDM cams
* Intake cams clocked to full-retard CVCT position of ~64*
* 3" catback
* custom longtube equal length headers
* Emanage Blue tuned
* 3" MAF
(some might remember whos car this was)
00vi deffinately makes less power/tq than an 02IM on a 3.5 block. When he had the 00vi on it, he dynod around 240whp. havent dynod the new setup yet, but it is seriously way more powerful with the 02IM. There is no denying it that the 00vi was choking up the motor. Even the intake note sounds different.
Both cars love tripple digit spray by the way.
* SSIM
* VQ35DE block and heads
* VQ35HR valve springs double-seated
* Debuloz Ebay JDM cams
* Intake cams clocked to full-retard CVCT position of ~64*
* 3" catback
* custom longtube equal length headers
* Emanage Blue tuned
* 3" MAF
(some might remember whos car this was)
00vi deffinately makes less power/tq than an 02IM on a 3.5 block. When he had the 00vi on it, he dynod around 240whp. havent dynod the new setup yet, but it is seriously way more powerful with the 02IM. There is no denying it that the 00vi was choking up the motor. Even the intake note sounds different.
Both cars love tripple digit spray by the way.
#16
^that sounds tasty!! both cars. i'd like to see numbers of the Frankenstein (3.5 block 3.0 heads and 3.0 block 3.5 heads) always assumed it'd be stupid to use 3.0 heads on a 3.5 block, but buy the sound of it...i'm wrong
#17
We got a car down here with a 3.5 long block, ported 3.0 heads, 3.5 cams and FWD VQ35 intake manifold. It also has a JWT ecu with 7000k rev limit and OBX 3.5 equal length headers down to just a 2 1/4" exhaust. It's pretty quick. It runs side by side with another local max with:
* SSIM
* VQ35DE block and heads
* VQ35HR valve springs double-seated
* Debuloz Ebay JDM cams
* Intake cams clocked to full-retard CVCT position of ~64*
* 3" catback
* custom longtube equal length headers
* Emanage Blue tuned
* 3" MAF
(some might remember whos car this was)
00vi deffinately makes less power/tq than an 02IM on a 3.5 block. When he had the 00vi on it, he dynod around 240whp. havent dynod the new setup yet, but it is seriously way more powerful with the 02IM. There is no denying it that the 00vi was choking up the motor. Even the intake note sounds different.
Both cars love tripple digit spray by the way.
* SSIM
* VQ35DE block and heads
* VQ35HR valve springs double-seated
* Debuloz Ebay JDM cams
* Intake cams clocked to full-retard CVCT position of ~64*
* 3" catback
* custom longtube equal length headers
* Emanage Blue tuned
* 3" MAF
(some might remember whos car this was)
00vi deffinately makes less power/tq than an 02IM on a 3.5 block. When he had the 00vi on it, he dynod around 240whp. havent dynod the new setup yet, but it is seriously way more powerful with the 02IM. There is no denying it that the 00vi was choking up the motor. Even the intake note sounds different.
Both cars love tripple digit spray by the way.
And track times on the hybrid setup ?
#22
True... lol. Although, when he finally made it to the track and the MAF died during the first run and he ran a 13.5
And as far as the cammed one goes, we've been to the track about 8 times... but it either rained, blew a tire out, lost 3rd gear, seized up the release bearing, snapped an axle, etc... Something doesnt want us going to the track. I tried going with my car 2 weeks ago and it started misfiring.
#23
#25
Yeah this would definatly take the thread off course but in my mind I would say because the merge is further back allowing the exhaust to gain more velocity. This could be completely wrong but its just how I see it.
#26
3.5 block and 3.0 heads and a 00vi or mevi will be the way to go. it will raise the compression which means more power so do it lol. there was a guy on here that was beating regular 3.5 swap maximas in his 3.5 block and 3.0 heads with a mevi and he ported and polished the 3.0 heads
#27
#29
#31
oh I either didn't read or didn't really register what your 2nd paragraph said. I thought you were turbo.
#32
But your right not really what this thread is about
#33
#35
3.5 block and 3.0 heads and a 00vi or mevi will be the way to go. it will raise the compression which means more power so do it lol. there was a guy on here that was beating regular 3.5 swap maximas in his 3.5 block and 3.0 heads with a mevi and he ported and polished the 3.0 heads
And if i remember correctly, kevin recently dynod the sentra w/ ITBs again with bigger exhaust and it's a little higher than that. . Completely different build though, but just showing that these DE's have more left in them all motor.
#37
#38
Now I have to rework the #'s for a dek and will just cut off the flange from a de uim and make new runners, plenum with a 3.5-4inch diameter elbow that bolts up directly to a pftb
#39
I was planning to take a 3.5 uim and cut off the plenum and make a new sheet metal plenum and elbow for boost but I popped the motor.
Now I have to rework the #'s for a dek and will just cut off the flange from a de uim and make new runners, plenum with a 3.5-4inch diameter elbow that bolts up directly to a pftb
Now I have to rework the #'s for a dek and will just cut off the flange from a de uim and make new runners, plenum with a 3.5-4inch diameter elbow that bolts up directly to a pftb
#40
If I still had the 3.5 version #1 of the intake would have been done this winter. I'll have more info about a 3.0/3.5 hyrid intake towards the summer