GT-R R35 Plenum Test Fitment on my VQ37HR

G37sHKS · 05-15-2013, 09:14 AM

Quote:

Originally Posted by Reaper42

I'm wondering tho, the big custom piece here is the adaptor plate in order to fit the stock gtr plenum. My question is, if I were to just buy the adaptor plate, would I be able to a fix and aftermarket GTR plenum such as Greddy's unit??

I asked this question before and the answer is in first post

Spikuh · 05-15-2013, 09:18 AM

Chris, absolutely loving the progress being made and assuming I don't have to kill too many babies to afford this, I will be taking one myself.

I do have a big question though.

Have you looked into ways to get the strut bar back? I know the factory one will no longer work with this setup and will require modification at the very least, but just wondering if you had given that any thought.

Thanks, keep up the great work!!!!

Nixlimited · 05-15-2013, 09:21 AM

I wonder if the dip around 5300 rpms is related to a resonance at that rpm. I think seeing whether it is persistent after a tune will give a good indication.

indyn · 05-15-2013, 09:35 AM

there might be little bit more gains with slightly bigger intake plumbing.

But, hats off to OP for taking the time to do this.

DIGItonium · 05-15-2013, 12:41 PM

Looks like I might be keeping my GTR intake collector since no one want it. ;-)

Chuck33079 · 05-15-2013, 12:48 PM

Quote:

Originally Posted by DIGItonium

Looks like I might be keeping my GTR intake collector since no one want it. ;-)

Put it on. Tune it. Show us what it will do with boost. I'd imagine it would really shine. I want this, but I'm not going to be the guinea pig.

Z370Z011 · 05-15-2013, 01:18 PM

Quote:

Originally Posted by Chuck33079

Put it on. Tune it. Show us what it will do with boost. I'd imagine it would really shine. I want this, but I'm not going to be the guinea pig.

ChrisUR · 05-15-2013, 04:03 PM

thank you all for the good feedback !

as I have already installed the STILLEN intake piping which is slightly larger than stock there should be enough air flow.

for the strut bar this is one of the next things on the todo list 2gether with getting the car tuned via OSIRIS.

as for pricing I have not yet calculated anything. The only thing I can tell currently is that I have paid well over US$6000 (not taking my time into account) in total to make this conversion happen so I fear it will not go for 200 bucks but is well in the 4digit area.

To be honest this mod is from my opinion for people who have done every possible mod you can do to an NA car or even super/turbocharged it and just want this icing on the cake to make it perfect.

Just to give you an idea only the welding took about 2 hours plus about 3 hours of hand-polish/grind the runners for perfect flow. This part even though it is "only" an adapter to make a plenum from another car fit is very complex (5 axis CNC for radius conversion) and not just a cheap "3 flange plates plus 6 pipes".

Please bear with me with the pricing as my current goal is to make the tune perfect and proof what gain can actually be achieved - after everything is 100% finished, tested and discussed I will offer you a group buy no question.

Thank you !

Chris

Kingbaby · 05-15-2013, 06:18 PM

No Sir, thank you!

It is icing on the top. I've shared this with my club and a couple other Nissan sites. Interest is there especially since it's not "just pipes" and damn near OEM! I can say about 10-15people I know would go in on something like this if it's not too much from my suggested number aka groupbuy scenario! That's just 07/08 folks!

HumbleZ34 · 05-15-2013, 06:25 PM

Nice!

SS_Firehawk · 05-15-2013, 06:47 PM

I think depending on price, on the amount of spare GTR manifolds laying around, and the amount of Z's with boost in their future, this has a lot of potential to sell well if you beat competition to market.

chrischhorn · 05-15-2013, 08:21 PM

Quote:

Originally Posted by SS_Firehawk

I think depending on price, on the amount of spare GTR manifolds laying around, and the amount of Z's with boost in their future, this has a lot of potential to sell well if you beat competition to market.

Will wait to see if there is a group buy pricing. 4 digits, I just don't think I can swallow that lol.

SgtGoldy · 05-15-2013, 09:45 PM

Group buy!?!? God damnit... There's goes the last of my fun money for the year...

370Z JT · 05-15-2013, 09:53 PM

If you can managed to maintain the 20-30ft-lb at 5 to 6K RPM after the tune I'm in!

NitrousZ34 · 05-15-2013, 10:19 PM

innn

05-15-2013, 09:21 AM	#363 (permalink)
Nixlimited A True Z Fanatic Join Date: Aug 2009 Location: San Diego Posts: 1,235 Drives: 15 GT-R / 11 Prius Rep Power: 26	I wonder if the dip around 5300 rpms is related to a resonance at that rpm. I think seeing whether it is persistent after a tune will give a good indication. __________________ Car Sold! Pleasure being a part of the Z community. New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

05-15-2013, 12:41 PM	#365 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 43	Looks like I might be keeping my GTR intake collector since no one want it. ;-) ts-c63 likes this. __________________

05-15-2013, 04:03 PM	#368 (permalink)
ChrisUR Base Member Join Date: Jun 2010 Location: Germany Posts: 116 Drives: 370Z Black Edition Rep Power: 16	thank you all for the good feedback ! as I have already installed the STILLEN intake piping which is slightly larger than stock there should be enough air flow. for the strut bar this is one of the next things on the todo list 2gether with getting the car tuned via OSIRIS. as for pricing I have not yet calculated anything. The only thing I can tell currently is that I have paid well over US$6000 (not taking my time into account) in total to make this conversion happen so I fear it will not go for 200 bucks but is well in the 4digit area. To be honest this mod is from my opinion for people who have done every possible mod you can do to an NA car or even super/turbocharged it and just want this icing on the cake to make it perfect. Just to give you an idea only the welding took about 2 hours plus about 3 hours of hand-polish/grind the runners for perfect flow. This part even though it is "only" an adapter to make a plenum from another car fit is very complex (5 axis CNC for radius conversion) and not just a cheap "3 flange plates plus 6 pipes". Please bear with me with the pricing as my current goal is to make the tune perfect and proof what gain can actually be achieved - after everything is 100% finished, tested and discussed I will offer you a group buy no question. Thank you ! Chris 370Zsteve and VQZ34nismo like this. __________________ ProStreet N1 exhaust \| ProStreet N1 Y-Pipe \| STILLEN G3 Intake \| NST Pulley Kit EIBACH Pro-Springs \| EIBACH Pro-Spacers \| EIBACH Sway Bars \| SEIBON GT2 Rear Wing MOCAL Oil Cooler 25row\| STILLEN TransCooler \| STILLEN PS Cooler \| STILLEN Front Fascia

05-15-2013, 06:47 PM	#371 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	I think depending on price, on the amount of spare GTR manifolds laying around, and the amount of Z's with boost in their future, this has a lot of potential to sell well if you beat competition to market. chrischhorn likes this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

05-15-2013, 09:45 PM	#373 (permalink)
SgtGoldy A True Z Fanatic Join Date: Feb 2009 Location: Orange County, CA Posts: 3,503 Drives: C63 AMG - LSD Rep Power: 651	Group buy!?!? God damnit... There's goes the last of my fun money for the year... __________________ C63 AMG LSD - Straight Pipe - EuroCharge v5 - Vossen CV7 - IG: @SuperFastYo

05-15-2013, 09:35 AM	#364 (permalink)
indyn Base Member Join Date: Apr 2011 Location: farr north Posts: 241 Drives: 11 BMW 335i 6AT Rep Power: 15	there might be little bit more gains with slightly bigger intake plumbing. But, hats off to OP for taking the time to do this.

05-15-2013, 06:25 PM	#370 (permalink)
HumbleZ34 Base Member Join Date: May 2013 Location: Under a bridge Posts: 24 Drives: Slowly :) Rep Power: 13	Nice!

05-15-2013, 09:53 PM	#374 (permalink)
370Z JT A True Z Fanatic Join Date: Jan 2010 Location: United States Posts: 2,905 Drives: 370Z PW 7AT Rep Power: 379	If you can managed to maintain the 20-30ft-lb at 5 to 6K RPM after the tune I'm in! __________________ Click for My Journal Top Secret \| EVO-R \| Fujimura Auto \| Shine Auto \| Seibon \| MRWorks \| Swift \| SPC \| SSR \| UpRev \| Project Kics \| NST \| Titek \| Eibach \| Nismo \| Whiteline \| Quaife \| Invidia \| Fly1 \| CF Element \| Carbon Signal

05-15-2013, 10:19 PM	#375 (permalink)
NitrousZ34 Banned Join Date: Apr 2012 Location: Canoga Posts: 505 Drives: Myself crazy Rep Power: 0	innn

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