GT-R R35 Plenum Test Fitment on my VQ37HR

Spikuh · 06-13-2013, 04:04 PM

About what I expected you would go for. Seeing it now, a thought just occurred to me. Since the whole brace wraps around the engine on both sides and will cause a bit more flex, could you put in vertical pieces between the brace segments to connect them and pull out some of that flex?

Something like this:

Gibby1113 · 06-13-2013, 04:29 PM

Sweet mother of God ME GUSTA. How much for one of these???

ChrisUR · 06-13-2013, 05:01 PM

@Spikuh

thats a good idea but I'm positive we wouldnt need extra braces when my design is finished. The angled braces left and right running towards the front will be doubled, means 80mm (3.149 inch) width and 20mm height and the horizontal brace will be 60mm (2.362inch) wide and 20mm height (0.787inch).

the material we use is a 2mm (0.78 inch) wall thick hollow square steel pipe.

The welding done by my professional welding friend (who also did the welding for the lower plenum adapter) assured me each welding point he makes between the new brace and the stock brace mounts can hold about 1 ton - we make 12 welding points on each strut tower.

I drove the car without any strut bar after the GTR plenum was in place. You felt a significant difference in driving especially as my car runs 3.5° negative front. Every wheel rut was very annoying.

Then for my last track day I cutted the stock brace horizontal and installed it only connecting the towers to the firewall. That made a tremendous difference and I couldnt feel any disadvantages on the race track - I even drove 2 seconds faster than a few months ago with the stock plenum and stock brace. Even though I had the impression that on a very bad road surface there was a negative effect not having the full brace.

In 2 weeks I'm on the race track again with the completed and fully installed new brace - you will get real world experience and honest reports as always.

Chris

Spikuh · 06-14-2013, 08:57 AM

Quote:

Originally Posted by ChrisUR

@Spikuh

thats a good idea but I'm positive we wouldnt need extra braces when my design is finished. The angled braces left and right running towards the front will be doubled, means 80mm (3.149 inch) width and 20mm height and the horizontal brace will be 60mm (2.362inch) wide and 20mm height (0.787inch).

the material we use is a 2mm (0.78 inch) wall thick hollow square steel pipe.

The welding done by my professional welding friend (who also did the welding for the lower plenum adapter) assured me each welding point he makes between the new brace and the stock brace mounts can hold about 1 ton - we make 12 welding points on each strut tower.

I drove the car without any strut bar after the GTR plenum was in place. You felt a significant difference in driving especially as my car runs 3.5° negative front. Every wheel rut was very annoying.

Then for my last track day I cutted the stock brace horizontal and installed it only connecting the towers to the firewall. That made a tremendous difference and I couldnt feel any disadvantages on the race track - I even drove 2 seconds faster than a few months ago with the stock plenum and stock brace. Even though I had the impression that on a very bad road surface there was a negative effect not having the full brace.

In 2 weeks I'm on the race track again with the completed and fully installed new brace - you will get real world experience and honest reports as always.

Chris

Alright, sounds pretty good. I only mention it as some others were also talking about how these angled braces could/should be a loss of stiffness.

Also, and this can go to anyone really, any idea why the brace mounts to the chasis and not the tops of the suspension towers? A friend of mine mentioned this to me while I was helping him install his 1.5 SC upgrade and I found it odd. I assume that mounting it to the chasis as opposed to the suspensions towers does not achieve the same result, or correct the same "problem", but could be incorrect.

Can't wait to see the new brace.

Chuck33079 · 06-14-2013, 09:03 AM

Quote:

Originally Posted by Spikuh

Also, and this can go to anyone really, any idea why the brace mounts to the chasis and not the tops of the suspension towers? A friend of mine mentioned this to me while I was helping him install his 1.5 SC upgrade and I found it odd. I assume that mounting it to the chasis as opposed to the suspensions towers does not achieve the same result, or correct the same "problem", but could be incorrect.

Just looking at the location of the top of the suspension towers, you would need some funky angles to get it up and around the motor.

roplusbee · 06-16-2013, 01:38 AM

Ok, so I guess I will keep watching.........

Sent from my SGH-T889 using Tapatalk 4 Beta

370Z JT · 06-18-2013, 11:05 AM

Adapter in production yet?

roplusbee · 06-18-2013, 01:34 PM

I wish we could get an update on the adapter instead of a new or modified brace. I would definitely look into that later. If this keeps going I this direction, I will simply take another option and let this option go.

Sent from my SGH-T889 using Tapatalk 4 Beta

XwChriswX · 06-18-2013, 10:03 PM

Quote:

Originally Posted by roplusbee

I wish we could get an update on the adapter instead of a new or modified brace. I would definitely look into that later. If this keeps going I this direction, I will simply take another option and let this option go.

Sent from my SGH-T889 using Tapatalk 4 Beta

Can't have one without the other...

And from what I've read, Chris is trying to bring you an essentially "plug n play" GTR Manifold swap with everything you'll need, lower plenum, upper manifold, and replacement strut bar. So I don't expect to see any real "kit pricing" or sales talk until the whole bit is completed...

That's my take on what he's doing at least.

Kingbaby · 06-18-2013, 03:44 PM

yea what happen

Reaper42 · 06-25-2013, 02:11 PM

Updates!

binary0x01 · 06-26-2013, 05:47 PM

Racecar!!

G37sHKS · 06-26-2013, 06:14 PM

We dont need the engine brace!!

sell us the adapters first then we can talk about braces!!!

370Z JT · 06-26-2013, 06:42 PM

Yea plus shipping that brace would be ridiculous compared to the size of the adapter.

wstar · 06-27-2013, 06:40 PM

Quote:

Originally Posted by 370Z JT

Yea plus shipping that brace would be ridiculous compared to the size of the adapter.

What would be smart would be for him to hook up with a quality US facility and have them mfg the brace from his plans locally for US customers.

06-13-2013, 04:29 PM	#2 (permalink)
Gibby1113 Enthusiast Member Join Date: Nov 2012 Location: On open empty highways Posts: 366 Drives: 40th anniversary Rep Power: 14	Sweet mother of God ME GUSTA. How much for one of these??? __________________ 40th anniversary #450/1000 \| Takeda Attack CAI \| Ark DTS exhaust \| to be continued...

06-13-2013, 05:01 PM	#3 (permalink)
ChrisUR Base Member Join Date: Jun 2010 Location: Germany Posts: 116 Drives: 370Z Black Edition Rep Power: 17	@Spikuh thats a good idea but I'm positive we wouldnt need extra braces when my design is finished. The angled braces left and right running towards the front will be doubled, means 80mm (3.149 inch) width and 20mm height and the horizontal brace will be 60mm (2.362inch) wide and 20mm height (0.787inch). the material we use is a 2mm (0.78 inch) wall thick hollow square steel pipe. The welding done by my professional welding friend (who also did the welding for the lower plenum adapter) assured me each welding point he makes between the new brace and the stock brace mounts can hold about 1 ton - we make 12 welding points on each strut tower. I drove the car without any strut bar after the GTR plenum was in place. You felt a significant difference in driving especially as my car runs 3.5° negative front. Every wheel rut was very annoying. Then for my last track day I cutted the stock brace horizontal and installed it only connecting the towers to the firewall. That made a tremendous difference and I couldnt feel any disadvantages on the race track - I even drove 2 seconds faster than a few months ago with the stock plenum and stock brace. Even though I had the impression that on a very bad road surface there was a negative effect not having the full brace. In 2 weeks I'm on the race track again with the completed and fully installed new brace - you will get real world experience and honest reports as always. Chris Reaper42, Spikuh, XwChriswX and 2 others 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

06-16-2013, 01:38 AM	#6 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 24	Ok, so I guess I will keep watching......... Sent from my SGH-T889 using Tapatalk 4 Beta __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

06-18-2013, 11:05 AM	#7 (permalink)
370Z JT A True Z Fanatic Join Date: Jan 2010 Location: United States Posts: 2,905 Drives: 370Z PW 7AT Rep Power: 380	Adapter in production yet? __________________ 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

06-18-2013, 01:34 PM	#8 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 24	I wish we could get an update on the adapter instead of a new or modified brace. I would definitely look into that later. If this keeps going I this direction, I will simply take another option and let this option go. Sent from my SGH-T889 using Tapatalk 4 Beta __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

06-25-2013, 02:11 PM	#11 (permalink)
Reaper42 A True Z Fanatic Join Date: May 2009 Location: Chicago, IL Posts: 1,030 Drives: GetLucky370 Rep Power: 20	Updates! __________________ Sponsor roll call: Get Lucky Brand \| TOYO TIRES \| Element Graphics \| Unique Fabrication Follow on fb- Jon Sackett and Instagram @GetLucky370 GetLucky370

06-26-2013, 05:47 PM	#12 (permalink)
binary0x01 Track Member Join Date: Jun 2012 Location: Idaho Posts: 892 Drives: 2012 6-SPEED 3.7L Z Rep Power: 16	Racecar!! 370Zsteve likes this. __________________ Tune (by Seb@SpecialtyZ) -- Upgraded Parts List : When in doubt, use brute force; if it doesn't work, you aren't using enough.

06-26-2013, 06:14 PM	#13 (permalink)
G37sHKS A True Z Fanatic Join Date: Feb 2010 Location: Dubai Posts: 1,183 Drives: 09 G37S Coupe 7AT Rep Power: 22	We dont need the engine brace!! sell us the adapters first then we can talk about braces!!! __________________ G37 BUILD UNDER CONSTRUCTION

06-26-2013, 06:42 PM	#14 (permalink)
370Z JT A True Z Fanatic Join Date: Jan 2010 Location: United States Posts: 2,905 Drives: 370Z PW 7AT Rep Power: 380	Yea plus shipping that brace would be ridiculous compared to the size of the adapter. __________________ 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

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