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GT-R R35 Plenum Test Fitment on my VQ37HR

Hello from Germany :-) following a suggestion from a member of this forum I update this first post with the most current information about the status of my project !

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Old 12-18-2011, 12:53 PM   #1 (permalink)
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Default GT-R R35 Plenum Test Fitment on my VQ37HR

Hello from Germany :-)

following a suggestion from a member of this forum I update this first post with the most current information about the status of my project !

as Facebook deletes picture links after a period please visit my album to see all pictures from the very beginning until today.

I will start a list of parts here you need to install the GT-R IM Conversion - this will be updated until the project is finished:

from ChrisUR Germany
1x lower GTR_2_Z34 Manifold Adapter
4x fuel rail holder for stock or aftermarket rails
2x 10mm to 6mm Hose Connectors
Xx Hose to connect to all vaccuum and water ports on the R35 plenum

from Nissan (I can also supply them with the kit)
1x - R35 Intake Manifold Plenum*1
1x - R35 Engine Cover*2
6x 16618EA000 - Z34 O-Ring Injectors
6x 166188J000 - Z34 O-Ring Injectors
1x 1661810V10 - Z34 O-Ring Fuel Pressure Regulator
2x 16175ET80A - R35 Throttle Body Gasket
1x - R35 Manifold to Plenum Gasket
2x - Z34 Head to lower Manifold Gasket

*1 you may also use 3rd party products e.g. GReddy, BoostLogic, etc. (fitment not verified yet)

*2 optional you can buy a carbon fiber cover like this from eBay

Chris
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Old 12-19-2011, 08:32 AM   #2 (permalink)
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just gauging interest - after doing some test fitment of the GT-R manifold this weekend I think about designing my own lower intake adapter to mount it to the VQ37HR cause GTM seems to need some more time to reveal theirs and as there is no ETA still for months I don't want to wait for them.

Just so you have an idea I will construct and calculate it via CAD and run some virtual dynos with it. The final product will be made out of aluminum, the flanges will be CNC'd using 5-axis and the welding will be done professionally here in Germany by the same company who welds for Airbus.

If there is enough people ready to buy I might produce it as a cast unit (also done in Germany in aircraft quality, no chinese crap), but that depends on how many units I can sell as the initial costs for a cast form are very high.

all testing will be done on my own N/A 370Z first so the primary goal for the construction is adding some HP to the stock naturally aspired engine, but of course it is very clear that this mod will help the FI people the most as this is a FI manifold.

please let me know !

Chris
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Old 12-19-2011, 08:40 AM   #3 (permalink)
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sunds interesting....

I might be in depens on the results, its hard to say im in for 100% sure because if it was that easy, GTM could have done it loooong time ago.

But props for you for trying
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Old 12-19-2011, 10:05 AM   #4 (permalink)
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its absolutely not easy and I guess I know why GTM takes so long, because this is in no way a P'n'P solution ! There are a lot of clearance issues and you need to extend a sensor wiring plus replace some hoses with shorter/longer ones plus modify the mounting position for the intake pipes on the throttlebodies etc. - when I'm done with the prototype I will do a full photostory of the installation or maybe a video for ease.

Just to make clear I'm building this for my car definitely because I WANT to do it just wanted to see how many other people are interested.

So not a 1 hour job like with the M370 but hey, this is something completely different not just a stock part mystically modified

Chris
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Old 12-19-2011, 10:08 AM   #5 (permalink)
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Old 12-19-2011, 10:15 AM   #6 (permalink)
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cant see pics, work is probably blocking it, but this looks like a fun build!
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Old 12-19-2011, 10:38 AM   #7 (permalink)
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If you have solid numbers to back it up. Subscribed.
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Old 12-19-2011, 11:09 AM   #8 (permalink)
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Old 12-19-2011, 11:22 AM   #9 (permalink)
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subd' good luck!
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Old 12-19-2011, 11:26 AM   #10 (permalink)
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Very interesting. If you can make the part at a reasonable cost, and especially if it helps w/ NA, I'd imagine you'd get enough takers. Keep in mind (as I'm sure you're aware) the "extra" connections we have on our stock plastic manifold that need to be dealt with as well, e.g. the brake booster vacuum, the MAP sensor, the PCV vacuum connection(s), etc.

Even if you don't end up mass producing the part and just do a one-off for yourself, at least it will give us some independent data on the utility of the GTR manifold. Thanks for putting this up here
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Old 12-19-2011, 11:26 AM   #11 (permalink)
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Sweeet...very interested!
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Old 12-19-2011, 11:32 AM   #12 (permalink)
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Old 12-19-2011, 11:35 AM   #13 (permalink)
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Quote:
Originally Posted by ChrisUR View Post
Hello from Germany :-)

yesterday I wanted to find out on my own if and how it would be possible to mount the GT-R manifold on our cars as there is still no solution available on the market for a conversion.
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Old 12-19-2011, 11:37 AM   #14 (permalink)
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Old 12-19-2011, 11:48 AM   #15 (permalink)
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I have of course checked at first if all connections for hoses, sensors, etc. are available - and luckily you will miss nothing when the conversion is done, but as written above its not just completely P'n'P - will detail in the installation documentary later !

I cannot tell if it will get HP, even though the lower manifold is not just bolted together with some spare metal pieces but constructed and rendered with the same software manufacturers use and build to meet and exceed OEM quality and fitment.

First calculations show it will be very hard to gain HP on N/A's throughout the whole power band because of the VVEL but I'm positive we can do at least much better than the M370. Maybe you will need a proper retune to take full advantage but this will all be tested from start to end and documented very detailed as soon as the construction and building part has been a success.

I'm glad you like this project, motivates me to bring it to live as soon as possible

Chris
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