Nissan 370Z Forum

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)

Megan370z 01-09-2012 06:39 PM

wow your progess goes forward quite quickly to compare with GTM !!!
I wish you good luck with the actual dyno testing !

hopping to see some actual gain on a NA application if there is, count me in for the setup !

ben1620 01-09-2012 11:54 PM

...never underestimate German Engineering. Looks awesome! I want one!

I'm in like Flynn.

blackonorange 01-10-2012 05:45 AM

Do want!

DIGItonium 01-10-2012 08:03 AM

Amazing work... as much as I'd like to keep my plenum, I'm still letting it go :/

TypeOne 01-10-2012 03:30 PM

Awesome!

KevinB 01-10-2012 07:20 PM

Just like Vince the ShamWow guy says ... The Germans Always Make Good Stuff!

ShamWow Song (Lyrics from Vince Offer) - YouTube

Skeeterbop 01-10-2012 10:43 PM

Subscribed! Looks good so far!

VQStryker 01-10-2012 11:10 PM

:happydance: sub'd

Unique_Z 01-10-2012 11:12 PM

Looking good bro, sub'd!

Billy02987 01-10-2012 11:20 PM

Quote:

Originally Posted by ChrisUR (Post 1482317)
the program I'm using is called "CATIA" - check this video !

http://www.youtube.com/watch?v=msSmNDy5cdE

We use Catia at my work, it's an awesome program, very versatile. The adaptor looks great so far, awesome job!

O&G 01-10-2012 11:25 PM

Looks great!

Cell 01-11-2012 12:50 AM

subbedddddddddd

GaleForce 01-11-2012 08:30 AM

Excellent! Keep up the good work!

ChrisUR 01-12-2012 04:22 PM

here are the final pictures - production of the prototype will start beginning next week !

http://fbcdn-sphotos-a.akamaihd.net/...77959735_n.jpg

http://fbcdn-sphotos-a.akamaihd.net/...62376795_n.jpg

http://fbcdn-sphotos-a.akamaihd.net/...82073487_n.jpg

http://fbcdn-sphotos-a.akamaihd.net/...51230507_n.jpg

http://fbcdn-sphotos-a.akamaihd.net/...01976190_n.jpg

Chris

wstar 01-12-2012 04:28 PM

Awesome :)

edub370 01-12-2012 04:28 PM

Very nicely done

Unique_Z 01-12-2012 04:29 PM

Looking good chris! cant wait to see the prototype model! keep it up bro :)

ChrisUR 01-12-2012 04:42 PM

the kit I can offer if everything works will consist of the following parts:

- GT-R plenum lower intake manifold adapter (as shown in the pictures)
- 2x 12mm custom fuel rails for stock or aftermarket injectors
- 1x OEM Nissan gasket for GT-R plenum
- 2x OEM Nissan gasket for 370Z head2lower_manifold
- all hardware needed like washers, nuts and bolts

optional parts:
if you want to keep the stock fuel system:
- adapter from the factory FPR to a Y-outlet block with 2x -6AN outlets
- 2x braided teflon fuel lines to each fuel rail with -6AN connectors

if you want to upgrade to a return system you can route two separate fuel lines to each fuel rail. On the firewall side of the fuel rail there is a -6AN plug which can be removed to convert to a true dual feed rail setup.

additional optional parts:
- OEM Nissan GT-R R35 upper plenum

we can even supply larger fuel rails with 15mm or 17mm if anybody wants to run very large injectors and needs it !

for pricing etc. I cannot say yet as I want to finish the prototype and dyno testing first and then have to calculate to cost per unit based on how many of you are interested in this special upgrade.

Chris

nismonster 01-12-2012 04:45 PM

sweeeeeeeeeeeet

wstar 01-12-2012 05:28 PM

Quote:

Originally Posted by ChrisUR (Post 1487497)
I want to finish the prototype and dyno testing

Something to keep in mind: is your test car ECU-tuned, e.g. w/ UpRev? The only other manifold option we've had (the M370) there's been this unresolved question forever that it makes gains on the stock tune, but if you dyno-tune before and after it may make zero effective gains, as the gains from the changes to the manifold seemed to overlap with the tuning gains somehow, at least for some 3rd-party testers.

ChipsWithDips 01-12-2012 05:38 PM

I agree, comparing tuned before and tuned after is the best scenario for showing a part's true gains.

For example many air intakes see gains by leaning out an overly rich AFR, which they can control by their MAF tube diameter. An optimal tune would also typically lean out the AFR the same or similar amount. If you compare tuned vs tuned the results are not always quite as impressive.

Oh, and nice work ChrisUR. Keep it up!

roplusbee 01-12-2012 05:55 PM

Ipressive progress to say the least. Keep up the good work!

VQStryker 01-12-2012 06:38 PM


:excited:

DIGItonium 01-12-2012 09:13 PM

Simply amazing. Don't forget the need for new MAF tubes. I'm not sure how it will all fit.

Calvin 01-12-2012 09:25 PM

subscribed.

kevr6 01-12-2012 10:21 PM

Holy!! I'm in!!

DIGItonium 01-12-2012 10:22 PM

Any offers for my GT-R intake plenum and engine cover? It's boxed up and ready to ship. Priorities changed, so I won't be able to take on this project.

VQStryker 01-12-2012 10:27 PM

Quote:

Originally Posted by DIGItonium (Post 1488039)
Any offers for my GT-R intake plenum and engine cover? It's boxed up and ready to ship. Priorities changed, so I won't be able to take on this project.

I want to see how this works out but I'd consider it. If this works out and shows large improvements, that plenum will become very marketable :tup:

ChrisUR 01-13-2012 03:46 AM

My car is currently not ECU-tuned - it has been dynoed with the stock manifold and my other mods (exhaust, CAI, NST Pulleys) then will be dynoed with the GTR plenum conversion.

I think for most people its interesting how mods can perform just with the OEM Nissan tune, so you can have real bolt-on performance.

Of course I have read the articles in DSPORT where they tested the M370 manifold and found out that a ECU tune is vital to at least restore stock peak performance and have gains in the RPM band.

Depending on how the conversion performs with the stock tune I will then maybe do a custom tune for the manifold to see whats really possible on a NA car if you max out possibilities.

I will report about every step and result in detail when we start testing.

Chris

ChrisUR 01-13-2012 03:52 AM

Quote:

Originally Posted by DIGItonium (Post 1487964)
Simply amazing. Don't forget the need for new MAF tubes. I'm not sure how it will all fit.

thats true, the tubing has to be about 4 inches shorter to fit the new position of the throttle bodies. For people having aluminum pipes thats quite simple, you can just cut that portion off and thats it. I will have to check how this can be done if someone has the stock rubber pipes, maybe there is enough flexiblity to make them fit without mods, that will be tested and reported.

phunk 01-13-2012 08:51 AM

if it requires a tune to make power, than that means it didnt make power.

these cars are MAF based. any changes in airflow will be detected and compensated for.

phunk 01-13-2012 08:54 AM

great design work ChrisUR... i am very very curious to see if there are any gains using the GTR plenum with your lower runner section.

What methods do you plan to use to manufacture this? I would assume billet cylinder head flanges and billet top flange with fabricated tubing inbetween?

phunk 01-13-2012 09:02 AM

also, care to share what your runner length within your part is? i have a VHR part and a GTR plenum here so I can compare overall runner length

ChrisUR 01-13-2012 09:12 AM

we tried to make the runners as short as possible, but you have to have a certain height of the top flange to make the GTR plenum fit above the valve covers, so the runner lenghts is quite determined by technical limitations.

everything will be made out of aircraft aluminum to save weight. According to the CAD design program the whole part will be around 2.3kg / 5pounds so its slightly more than the stock cast lower manifold.

You are absolutely right, my primary goal is always to achieve performance gains with the stock tune and the ECU re-calibration itself for the higher air flow.

As it is proven to work with e.g. the STILLEN Gen3 this should also work with a better intake manifold design - first dyno tests will show :-)

Chris

MattP725 01-13-2012 10:09 AM

Not by any means to be a naysayer but with all the time and development you are spending to make a OEM part fit a different car, why not just fabricate a higher flow manifold to utilize the stock components like fuel system and MAF? Wouldn't that simply things and perhaps save some design cost?

modme 01-13-2012 10:19 AM

Quote:

Originally Posted by MattP725 (Post 1488558)
Not by any means to be a naysayer but with all the time and development you are spending to make a OEM part fit a different car, why not just fabricate a higher flow manifold to utilize the stock components like fuel system and MAF? Wouldn't that simply things and perhaps save some design cost?


Because GTR FTMFTW!!!!

indyn 01-13-2012 10:37 AM

will the stock throttle bodies still work with the GTR intake manifold?

ChrisUR 01-13-2012 11:44 AM

Quote:

Originally Posted by modme (Post 1488568)
Because GTR FTMFTW!!!!

you got me ! :happydance:

of course we could have designed a completely new manifold - but the challenge was to make GT-R fit.

So many people in this forum were talking about this conversion for years and my dream was to finally make this happen.

@indyn
yes, the stock throttle bodies are exactly the same with GTR and 370Z - you can simply bolt them on, all cables and hoses will fit.

XwChriswX 01-13-2012 04:41 PM

I know its still very early in the development and production of this, but for all those wondering if their wallets can support this... has there been any talk about pricing yet? Or has that even been thought of. Not looking for something exact of course, but maybe a ballpark figure just so people can think about their finances because there is obviously a high demand for this part right now. And it will only grow once it's released, bolted on, and looks and performs miraculously. :tup:

Just trying to get a guesstimate... Are we talking $1k, $2k, $3k range?

roplusbee 01-13-2012 04:55 PM

I am very curious as well. I turned down the Motordyne manifold because it was not really necessary for my Greddy build, but this one is a want item!


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