Nelsonmxmarc 1993 GTSt Type-M Build / Tips-tricks for HCR32 (Skyleezy!)

[M13]

Aftermarket SARD fuel rail (works with Denso injectors) with entry on the front of fuel rail -

http://www.more-japan.com/files/d_1068.jpg

Can be run the same way as stock fuel rail, but can remote mount the FPR's.

Here's some flow data to show that angling throttle body towards 3, 4 cylinders, shape of plenum is critical to correct flow into runners, cylinders -

http://v-eight.com/tech_forum/viewtopic.php?f=4&t=1558

As far as I know, you can do flow testing in Solid works that people use when designing parts.

The intake plenum that M13 has on his RB20DET is close to perfect.

yeah that rail is what i run.

Thx for the complement, I read that info during the planning of my build. Some people leaned out cylinder 5 and 6 bc they received far more air than 1 or 2 w/ the home made plenums. At the end of the day, I spent 400-500 on the custom plenum I have, and am glad to see ppl like Supraclean asked me diligently about them and made the jump to get his own.

[nelsonmxmarc]

Pfffft it's overrated
I eventually plan to design one using the oem mount, but we'll see..


Anyways! So my method was to simply saw off the mounts, flip it around and weld them on the underside. That way the rear mount, which is directly outwards, clears.

Instead.. I turned the tb around.. Lol
Which made for a great mounting point for my throttle cable..

I'll post pics when I get home

[cobrAA]

hey marc, take a quick look at this ( Working my extractor)

http://forums.gtrcanada.com/media/39723-cobraas-eastern-detailing-pic-16.html#post446658

[nelsonmxmarc]

Voila





I welded an aluminum bracket underneath to adjust the tb cable tension as well. Threaded the insert so it's fully adjustable as stock!

I'll get more pics of this when i get some free time.

[MarusGTR]

Hey Marc, that's seriously a beautiful engine, it really shows TLC.

[amnash]

that an oem fuel pressure regulator? never seen one

[falcon]

Has anyone else done a relocation of the TB like that? The one think I would be worried about is possible lack of airflow to the 1 and 6 cyl.

[nelsonmxmarc]

Adam, yea it's OEM..


It's debatable. A lot of people assume cyl 1 runs rich, and 5 / 6 will lean out, but just based on air properties and air under pressure, it shouldn't affect much.

In theory, runners 3 and 4 should be lean stock, since the entry point is directly pinned at them; however this is not the case..

We'll see on the dyno; pull the plugs and keep an eye on stuff to see as well. I'm sure it'll be fine!

RB25 guys in AUS do this quite often, but i'm almost 100% sure this is the first RB20 plenum mod done! (Different sized plenums)

[nelsonmxmarc]

Engine goes in tomorrow
Turbo is still out for rebuild

These just came in though, to keep me busy.

Install, along with toe, camber and castor DIY adjustment will be up soon!

[nelsonmxmarc]

She's in!!

Everything's hooked up, minus coolant lines to the heater core and throttle cable..

Now awaiting turbo..

Tonight i'll finish off the suspension components and see how it sits.. I may need to roll the rear at -1.5 degrees, since right now it fits and as far as i can tell it's about -3 degrees and just scraping by..

Once the turbo's in, i'll hook up my oilcooler and turbo lines! Need to program in my Z32 maf through Nistune to offset the MAF voltage, than i should be able to drive it around, keeping off high boost (huge lean condition for sure) for the mean time..

[frankiman]

hey marc, could i come back this sunday to film some more?

[nelsonmxmarc]

Of course!
I'll be super hung over / still drunk / in a coma, so feel free to pop in!

What time you figure?

[frankiman]

early afternoon i guess, ill txt you an hour in advance

[Chewy]

Lookin good!

[nelsonmxmarc]

Sounds good Frank!

Thanks man, she's coming along... Slowly but surely!