Nissan 370Z Forum - GT-R R35 Plenum Test Fitment on my VQ37HR

Nissan 370Z Forum (http://www.the370z.com/)

- Intake/Exhaust (http://www.the370z.com/intake-exhaust/)

- - GT-R R35 Plenum Test Fitment on my VQ37HR (http://www.the370z.com/intake-exhaust/46897-gt-r-r35-plenum-test-fitment-my-vq37hr.html)

Quote:

Originally Posted by octet (Post 2847171)

Chatting with Chris :)

Will give you guys some updates later :)

Don't you dare give these people false hope Octet! Don't you f*cking hurt them again!

Quote:

Originally Posted by SgtGoldy (Post 2847176)

Don't you dare give these people false hope Octet! Don't you f*cking hurt them again!

Go to sleep

This is still happening, will upload photos and details later on today, just finished chatting with Chris in Germany, extremely nice guy!!!

Right, little update from Chris, after we've been chatting yesterday.

Quote:

"About 3 years or so I looked at the forums and after having decided to keep my car NA I looked into all possiblities to make more HP - did exhaust, 300cpi cats, manifolds, gen3 intake, NST pulleys. I didnt want to alter the engine internals like pistons etc. cause I track my car on all german and european raceways during the year and thats about the only purpose I have it for - no daily driver. This year I will compete in the first time attack series here in germany so the ultimate primary is reliablity!

When I first saw pics of that 1000HP build from GTM where they test fitted the GTR manifold I was in love. So I thought as everything else for this car is already avail and so many people pray for the GTR conversion I said to myself this would be a project I can be recognized for in the Z world - and having awesome friendship to a automotive parts designer I accepted the challenge and didnt want to stop until the goal is reached, my car running with that manifold.

Well, I wasnt aware what I decided to do the easiest part was buying a usied GTR manifold - then things went seriously. So many problems to solve - but as I have annouced already to make it happen I couldnt stop for my own piece of mind. First we discovered that the heads of the GTR have a totally different flange pattern, so a reuse of either the GTR lower nor the 370Z lower was possible. We had to create a hybrid with Z head flanges and GTR upper plenum flanges. Next problem was that the Z incorporates the injectors in the lower manifold so its not a simple cut&welding job but real CAD construction.

I wanted a design I can put together here at my shop so I dont need to have a cast iron - problem with cast iron is that the initial costs are really high and you have to order so many units at once that the financial effort is huge, and you cannot simply modify the design and evolve the part as once you have the cast iron negative you are doomed to produce with that to get your initial money back.

So I wanted a welded solution - we designed the lower flanges and the upper flanges - but the flange design is extremely difficult as you need to make a transition from the head ports to the upper plenum ports and connect both with round tubes. The CAD design in the end was one of the easy parts - cost me quite some money as this is nothing someone does for free but there was a result we could work with and the drawings looked awesome

The really PITA now was to have it acutally made - as our complex design asked for a 5-axis CNC machine which either not many shops own or those who do asked obscene prices, and I wanted just ONE - as a prototype for my car to test and fit and race before I would be eager to offer it to any one

Therefore I delayed the production for many months - at this point I had invested about $5000 in research and parts and construction already with nothing else than a drawing and CAD files for some CNC shop. You can imagine that my motivation has decreased at this point - having invested quite some money and no chance to transfer to the real world as just the prototype will cost another 10K+.

But over the months I continued to speak to CNC shops all over Germany and finally found one which made the 3 flanges (actually thats it, three f***ing flanges, some straight piping and a lot of welding) for under 5K.

I saved some money over the months and finally decided that I wanted to finish the project no matter what.

I ordered the 3 flanges, ordered the pipes, ordered a new aluminum welding machine and finally removed my stock intake manifold and started the build. I made my adapter and fitted it to my car.

http://seology.com/350z/2014-06-06_07-59-14.jpeg

Due to the welding I had to hand polish and grind every runner up and down to make the transition from oval lower to round to upper spheric perfectly smooth.

http://seology.com/350z/2014-06-06_07-59-52.jpeg

When the upper plenum was mounted we found out that the throttle bodies need to be relocated - happily I had the stillen gen3 already so I simply cut the pipes going into the front fascia and made it fit. The water cooling for tb was also removed - you could reuse it but for looks throw it away.

Here you see the welding of my prototype ON the car to make it a perfect fit - took 2 days and a lot of argon gas.

http://seology.com/350z/2014-06-06_08-00-49.jpeg

http://seology.com/350z/2014-06-06_08-01-17.jpeg

First I thought we need a different fuel rail but as I wanted to keep the design simple as possible and so that everybody would be able to install it to his car we found a way to keep the stock fuel system. Well of course you can use other rails but thats only an option not a need.

http://seology.com/350z/2014-06-06_08-02-06.jpeg

http://seology.com/350z/2014-06-06_08-02-31.jpeg

http://seology.com/350z/2014-06-06_08-02-55.jpeg

http://seology.com/350z/2014-06-06_08-03-14.jpeg

Above you see the finished prototype unit with rails and injectors installed. See that grinding in the runners - perfectly smoothed by my own hands during hours and hours.

http://seology.com/350z/2014-06-06_08-04-09.jpeg

Finished - no CEL codes, all sensors, pipes, hose, etc. are connected, idles completely stock, no ECU mod necessary, simply install, fire up and drive.

As I track the car 99% of the time I also wanted to find a solution for the strut bar - we tried to make the manifold as low as possible but no chance to reuse the factory strut
thats why the GT-R has none over the engine also, same problem.

http://seology.com/350z/2014-06-06_08-05-06.jpeg

So here is what the engine bay currently looks:

http://seology.com/350z/2014-06-06_08-05-55.jpeg

What we found while playing around with uprev and our inhouse dyno is that we have good gains across the torque band - power is also increased slightly in the low and mid range but for the top range we would need to alter the VVEL to really use the higher air flow which is not possible with OSIRIS currently, but for your Greddy Twin Turbo setup it should be awesome!

Adrian if you really want one of those I would be happy to reactivate the machinery and figure out a price. If you want feel free to share everything we discussed at the forums - of course it would make things easier if I order to CNC more parts at a time."

This is the chat I had with Chris yesterday. I will make sure I get some price estimates and some dyno sheets from him and post them here as soon as possible.

To make this happen, I would need a list of how many people are seriously interested in buying this, providing the price is fine. I would make a wild guess, cheaper than the GTM version. I will stay in touch with Chris and keep you guys updated here.

Please express your interest by putting your name in the list bellow:

1. octet
2.
3.
4.
5.

Adrian

1. octet
2. 370Z JT
3.
4.
5.

Depending on cost I may or may not be interested. Will wait before putting my name on the list.

Sent from my Nexus 5 using Tapatalk 4

Thanks Cell, will try to get price estimate early next week. Chris is working on it this weekend.

Anybody else interested?

I am very interested, but it would be nice to see a clear dyno of before and after EDIT: Meaning after tuning. I still only see the original dyno, untuned.

Also, would this include a modified strut bar or is the end-user on his or her own on that?

Otherwise -- congrats to Chris for successfully completing the project! :tiphat:

Im interested as well but, want to see price and dyno sheets like everyone else. Also what time frame for production after you lock in the list?

It's not a final list guys, just express the interest so we gather an idea of how many we might need. This way we can negotiate with the CNC shop to get parts sourced at a better price.

I'll ask Chris to source prices for everything, including the strut bar.

1. octet
2. 370Z JT
3. Cell
4. Jordo!
5. Rangerz
6.
7.
8.
9.
10.

Subscribed for pricing details. From 2011 till now. Just amazing.

Sent from my iPhone using Tapatalk

1. octet

2. 370Z JT

3. Cell

4. Jordo!

5. Rangerz

6. merkil

7.

8.

9.

10.

hmmmmm interesting........as long as the price is right......add me to the list

Interested, intrigued, in...

1. octet
2. 370Z JT
3. Cell
4. Jordo!
5. Rangerz
6. merkil
7. Benci
8. binary0x01
9.
10.

Good stuff, we should be able to get this a lot cheaper if we can order like 10-15 kits at least. Keep expressing your interest guys, I know we don't have a price tag yet, but we should have it pretty soon, as I said.

Interested. Depending on the price and dyno sheet.

I would like it if this fit a g37 and not over the top on price. I have the same engine as the 370z so I don't see why it would not fit. I also have all other bolt on modes other than cams and I am running out of ideas of what to do to get more power, other than F.I. (to many blowing up lately.):ughdance:

I'm interested in the pricing and dynos. I really need to see the numbers before I commit to anything though.

Is this for the adapter only or full kit with plenum?

Sent from my Nexus 5 using Tapatalk

I'd be skeptical if were you guys. Chris might be a good guy but he did just kind of disappear for a year with no updates. Plus you would be sending money to internationally, so i'm not sure how you would even go about getting your money back if this turned into a "GTM" type deal.

Hmmmm...... i'm a skeptic. I'll sit here and watch to see how this unfolds....

Chris should come and say something. I think it would put many members at ease instead of going through s third party channel...

Sent from my SM-N900V using Tapatalk

I do not want to take away from the achievement here. Obviously Nissan saw something in this design for the Gtr. My purchase decision will be on the dyno and strut bar solutions.

Sent from my Nexus 5 using Tapatalk

Guys, don't worry, we'll do everything transparent and through PayPal, you will have 45 days cover. I know exactly what you mean, I went through the same sh|t with GTM, paid Sam $8000 and luckly I did it with PayPal, so got my money back in the end from PayPal, as Sam's bank account was empty.

For your peace of mind, if you have any doubts about me feel free to call Coz from ConceptZPerformance, he we'll confirm how serious I am.

Although I'm the 3rd party, I took this opportunity to help the forum members here, I could have just bought one for myself only.

As I said, I will personally make sure everything is transparent, from Dyno sheets, payment method to prices for each individual component, eg: hoses, o rings, strut bar, intake adaptor, gaskets etc.

Any more concerns please fire the up here.

Adrian

Why doesn't Chris UR post anymore?

I've asked him just now to come and confirm everything. :)

Quote:

Originally Posted by octet (Post 2849920)

I've asked him just now to come and confirm everything. :)

:tup:

Quote:

Originally Posted by 2sl0w (Post 2849710)

Is this for the adapter only or full kit with plenum?

Sent from my Nexus 5 using Tapatalk

This will be for the adapter, required fittings, gaskets, o rings etc.

We will provide additional cost for strut bar.

The GT-R intake can be sourced from your local dealer, it will be cheaper than Europe anyway. Alternatevely start looking on eBay and GTR forums for a second hand one. I bought on here, on this forum.

1. octet
2. 370Z JT
3. Cell
4. Jordo!
5. Rangerz
6. merkil
7. Benci
8. binary0x01
9. Rusty
10. hc_416
11. gbrettin
12. SgtGoldy
13.
14.
15.

Keep the coming.

Quote:

Originally Posted by octet (Post 2849925)

sorry brotha, I moved onto a BMW now. Chris took too long :mad:

Ha ha, OK :) Traitor! LOL

Here are some used ones:

http://www.ebay.com/itm/161328752937

http://www.gtrlife.com/forums/topic/...manifold-core/

http://www.ebay.com/itm/221365864379

Although this looks AWESOME, and apparently performs like crazy! Look at the dyno sheets comparing to stock or Greddy on a GT-R

http://www.gtrlife.com/forums/topic/...icial-release/

Updated list:

1. octet
2. 370Z JT
3. Cell
4. Jordo!
5. Rangerz
6. merkil
7. Benci
8. binary0x01
9. Rusty
10. hc_416
11. gbrettin
12.
13.
14.
15.

Updated list:

1. octet
2. 370Z JT
3. Cell
4. Jordo!
5. Rangerz
6. merkil
7. Benci
8. binary0x01
9. Rusty
10. hc_416
11. gbrettin
12. EVOR
13.
14.
15.

Quote:

Originally Posted by octet (Post 2849937)

Here are some used ones:

GTR R35 Upper Intake Manifold Used Only 750 Miles | eBay

Used 09 Intake Manifold Core - Engine & Transmission - GT-R Life

R35 Nissan GT R VR38 nismo 350Z G35 Akrapovic Greddy LS3 ZR1 Stingray C7 | eBay

Although this looks AWESOME, and apparently performs like crazy! Look at the dyno sheets comparing to stock or Greddy on a GT-R

Boost Logic R35 Intake Manifold OFFICIAL RELEASE - Engine - GT-R Life

That thing looks menacing as f*ck

https://chariotzcdn.s3.amazonaws.com...stlogic-25.jpg

Wont work on 370z, needs custom intake pipes, look at the TB

needs more than that. the boost logic GTR intake manifold includes its own lower intake manifold. also, the driver side throttle inlet area conflicts with the VHRs oil cap.

i have a never-used GT-R intake manifold in near mint condition if anyone wants to scoop it up, pm me.

Anyone have the balance tube? I need that part.

Quote:

Originally Posted by 370Z JT (Post 2851428)

Anyone have the balance tube? I need that part.

It is probably blocked off on his kit, it looks too far back to fit one.

I have had my manifold for quite a while waiting to see if chris chimes in. I see a list of names but still no dyno sheets, cost, or chris chiming in. Not sure why just all of a sudden the drop when you got people on the edge of their seats waiting for updates.