Work Log: R33 GT-R

[PurpleStreak]

It's been a busy month, but I've since finished putting together the interior. I'm pretty happy with the way it looks for now. The boots fit excellent, and the in dash video has been very entertaining for my passenger


I was really annoyed with the stock air box, so I replaced it with used M's pod adapters. (The Demon Motorsports kit I got before didn't have any hardware with it) They came with Blitz filters, but I ordered Amsoil dry filters (which are on backorder) so here they stay. They make the car sound amazing though! Still, they probably wont be on the car anymore by the end of this winter

[R33-East]

Good stuff, I have some interior work planned just waiting on a few more things before I get started.

[PurpleStreak]

Good stuff, I have some interior work planned just waiting on a few more things before I get started.

Looking forward to it!

[PurpleStreak]

Today I installed DIN gauges from Nismo.


Also, I discovered a few dribbles of oil on the garage floor. It was the coldest day the GT-R has seen so far, perhaps a loose hose to/from the cooler? Also, the car has been hesitating from 5 to 7k rpm.

I think now is a good time to stow the GT-R for the winter. With that, work can commence!

Tasks:
- Change oil, filter and spark plugs

Quaker State synthetic oil,10W-30, just for winter storage and occasional starting and running.
NAPA Gold oil filter 1361
BKR8EIX NGK Iridium Plugs

- Re-orient oil cooler
- Install better oil cooler ducting
- Fix broken mounting clip on RH side skirt
- And some other minor stuff

[whiter34gtr]

I am curious. why didn't you remove the stock boost solenoid, since you are using a blitz BC.

[PurpleStreak]

I am curious. why didn't you remove the stock boost solenoid, since you are using a blitz BC.

That's just how it came, I'm not sure why they did it but it probably just results in more boost spikes..I'll fix it, thanks!

[PurpleStreak]

I am curious. why didn't you remove the stock boost solenoid, since you are using a blitz BC.

There, how does that look?


Also got the coil packs off, everything looked ok except this on cylinder 5


The Shop-vac took care of this gunk quickly! Just waiting for the plugs to arrive tomorrow..

[PurpleStreak]

My plugs arrived at NAPA today, so I figured while I was at this I might as well do a compression test. So I took my wad of Canadian Tire money and also picked up a compression test kit and a battery charger/starter.


I put everything back to start the car and warm up the engine, then pulled the fuel pump fuse. I took out all the plugs, hooked up the starter, and started the compression test.



Initial compression test results:
Cyl #1 150 psi
Cyl #2 155 psi
Cyl #3 145 psi
Cyl #4 153 psi
Cyl #5 102 psi
Cyl #6 105 psi

Obviously, Cylinder 5 and 6 have issues. I tried the test again, with WOT and some oil added in Cyl 5 and 6. The following results were obtained

Cyl #1 160 psi
Cyl #2 162 psi
Cyl #3 155 psi
Cyl #4 165 psi
Cyl #5 110 psi (one cap of oil); 130 psi (one more cap of oil)
Cyl #6 130 psi (one cap of oil)

These results, combined with the pressure rise pattern during cranking, indicate passing rings on #5 and 6. Not sure there's much I want to do about that at this point.

Anyway, with these mixed results, I gapped the new plugs to 0.8mm and put everything back together, and took the car for a drive.


The car drives like new (at least in my opinion), with no hesitation past 5000 rpm. Boost builds in a smooth fashion as well (thanks for the heads-up whiter34). Now, just have to deal with the oil leak...

[PurpleStreak]

I recently learned from a helpful link here that #5 and #6 are usually the first to run lean on the RB26, so now I don't feel so bad. Still not going to do anything about it.

All I managed to do last weekend was fix the broken clips on the sideskirt. A quick 5 min job. Clips were ordered from RHD Japan, Part#76882.


Before (please excuse the dusty car)




Panel off and new clips inserted




After



In other news, still accumulating parts for my mini-build..

[JDMotion]

did you try to find those clips at local parts stores or nissan dealers? i need some too

[PurpleStreak]

I didn't check but 76882-6P000 seems to be for North American cars as well; I'm sure it would be at Nissan dealers and they're a fraction of RHDJapan's price on Ebay

[PurpleStreak]

So since the beginning of winter I've had the car up on stands and started on the overdue up-keep items, namely the oil cooler. I've decided to abandon the aftermarket turn signals all together, so in preparation of getting some Bee-R/Border style ducts + turn signal mounts, I'm scrapping the homemade ducting. The cooler will also be turned 180 for proper orientation of the inlet and outlet.


I found I have a Trust filter relocation kit along with an unknown sandwich plate.



And last but not least, the humble parts pile accumulating along the side of my garage.

[PurpleStreak]

I guess I should break down the parts in my build; I know this setup has probably been done hundreds of times but hopefully somebody finds it interesting.

GT2860R-5 Twins


For a basic build like this, the ideal choice would be GT2860R-7s (N1) or GT2860R-5..I liked the -5s because they offer more long term power potential after internal upgrades than the N1s, seeing that my engine looks like it needs a refresh anyways..all for a slightly higher boost threshold. We'll see how they play out.

Turbo Oil Feed Lines, Water Lines, 0.8 mm Oil Feed Restrictors



Seeing that the water lines are prone to breakage during removal, I thought I'd upgrade the water lines along with the oil feed lines.
The -5s are ball bearing turbos, therefore they don't need as much oil as a journal bearing. A 0.8mm restrictor on the oil feed should suffice for each turbo.

Cometic Gaskets



A full furnishing of gaskets by Cometic for the turbos is also included.

eBay downpipe



This is the biggest unknown by far, but measuring at 2.75" inlets and 3" outlet, the restriction presented by the stock downpipe will be removed.

Innovate MTX-L Wideband



Self-explanatory..serial communication will make tuning much easier.

Nismo Oil Separator





Not cost-effective, but one of the only proper recirculating setups in the market. The design of the separator would not look out of place in commercial applications.

Trust RB26 Z32 MAF Suction Kit



Not really necessary, but it will look sharp!

Twin Z32 MAFs



N62 MAFs for the Z32..supposedly good to 511 rwkw (almost 700whp), which should be plenty sufficient for my application.

Nistune on R32 GTR ECU





For this build, a stand-alone ECU is overkill, therefore only Nistune is being used. A R33 GTR ECU is not compatible with Nistune, so a R32 GTR ECU (05Uxx) needs to be used. The board also needs to accommodate changes in O2 sensor usage for the R33.

Aeromotive 340 Stealth Fuel Pump



This is one of the higher capacity in-tank single pumps for this application. Chose this after reading this link on GTRC, not sure which thread it came from.


http://realstreetperformance.com/store/pages/fuel-pump-comparison-test-5.html

Deatschwerks 800cc Injectors



I dont have these on hand yet due to backorder, but rave reviews, high quality, and a unique injector test report led me to choose these. I went with extra capacity for future proofing.

I'll be working on this till spring, so plenty of time to get things right.

[R33-East]

Nice bunch of parts you have, I am interested to see how everything works out as I will probably be doing something similar down the road. What are your power goals for this build?

[PurpleStreak]

Nice bunch of parts you have, I am interested to see how everything works out as I will probably be doing something similar down the road. What are your power goals for this build?

I would like to see in the range of 400-450 awhp. This should be achievable at a relatively low boost level. Not sure if the Nismo sports clutch will support that kind of power, but I don't think this particular engine could support any more than that anyway.