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R32 Gtr T88-34D


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I started this build 3 yrs ago after burning a valve, and as you do you crack the engine and see what you don't expect.

After stripping the engine down I found out beside a new valve, I also needed a new crank which had a nice hair line crack thru an oil journal.

I installed a new R33 crank which was slightly modified, trust pistons & rods with ACL bearings. I had the compression, deck hieight, & squish modified.

I also installed stainless 1mm over sized IN & EX valves. I retained the cams that were already in the engine which where old school " TOMEI 260's " which I found engraved in the shafts. I believe that's what they did before they made PON & PRO versions.

I decided to do an external oil pump setup which I did myself. I used a moroso single stage oil pump and contracted an awesome fabricator called Billet Motorsport in Vic to make me brackets and front pully out of billet aluminum. The front crank drive pulley is a one piece item to reduce possible component failure and the brack system was all NC'ed with billet spacers and bolts. I had it done to match the Ati balancer I chose to install.

Next step was to modify a RB30 oil pump by removing it's gears & topping off it's oil feed gallery so I could connect braided feed lines to the external oil pump.

I contracted Brad at Westside Mufflers to make a custom 9ltr sump extension with windage gates, custom pickups & drain. Once the sump was completed I contracted Westend Performance Engines to machine, build & assemble the engine.

With the engine completed and dropped into the bay I continued with the oil pump system. I got Steve from Earls to come take a look and get his advise on the best fittings and lines to use. After making all the Earls lines and fittings the installation was simple.

Getting close to starting the engine I started thinking about what fuel I wanted to run and after 2 sec of thought I decided with E85. I consulted Adam at Just Engine Management, he advised me that I would need approx 30% more fuel capacity so I decided to ditch my 700cc injectors and get Xspurt Bosch 1600's.

At this stage my GTR was still running the Haltech E11v2, seeing the capabilities of the new Platinum Pro plugin ecu I decided to sell the E11 and upgrade.

It was very tempting to sell the T88 setup and get a more modern design turbo but I knew it would perform since I had already install a 6boost split pulse manifold which made a massive difference on the previous engine.

So eventually Adam at JEM loaded it onto his dyno for the run in. After running it in on the dyno for a while it ended up with 405kw on gate pressure 1bar spring which I was very happy with.

I put the km on it, installed 2x -6 Teflon braided lines from each fuel pump to each side of my fuel rail to give it the best chance of supporting the power I was hoping for.

After 6 mths went by Adam loaded it up again on the 4WD dyno. 2nd dyno run it was already at 488kw, 3rd run 512kw, 4th run in it made an amazing 525kw at 4 wheels on 25psi and has 22psi of boost at 4,700rpm. during that run we could see the 2 Walbro pumps were getting to their limits so I decided that was enough for now until I upgrade them.

I'll upload all my pics & vids of the build next.

Hope you like it

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My damaged valve

post-1009-0-91433700-1303628520_thumb.jpg

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The front wheel measures 102mm outer diameter

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The Billet Motorsport brackets and pulley setup

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Custom sump extension done by Westside Mufflers

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My custom head drain

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My Xspurt Bosch 1600cc fuel injectors

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Modifying my twin walbro fuel pump setup for E85

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1st time start plus run-in tune

And power tune 525kw at 4's at 25 psi with the fuel pumps at their max.

post-1009-0-46201500-1303629751_thumb.jpg

Edited by mrchams
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Ahhh I remember this car from when it was in Zoom mag all the time, nice, good to see how have gone a long way power wise since then.

Wow, you've got a good memory, yep it sure was the HPI project gtr.

Since then I've not only built my GTR engine but had 3 kids alone the way... lol

Thats one of the reasons its taken so long.

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The 1mm oversize valves

post-1009-0-47501500-1303634014_thumb.jpg

My pistons

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Picture of the bore that had the damaged valve

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Inside my custom sump

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Engine bay photos with new read paint

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My Apexi valve springs

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My triple plate clutch

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6BOOST manifold and 50mm gate

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Edited by mrchams
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Buy a real car mate Go the STI lol.

all i want to say is well done so happy that you have finished the build and you are happy with the outcome

Keep up the good work son

All I can say is we are going to have fun you trying to catch me in your 34....lol

So how did it go on the freeway on Thursday night?

Next time I'll need to remember to mount the video camera and film it....

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All I can say is we are going to have fun you trying to catch me in your 34....lol

So how did it go on the freeway on Thursday night?

Next time I'll need to remember to mount the video camera and film it....

And when i do catch you in the r34 then??

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I couldn't believe how well it went on 14psi, it was strong!! Definitely the most responsive T88-34D setup I've ever driven, I could imagine that extra power would be nuts. Time to drop a pair of 044's in that surge tank Deano :)

That engine is mega efficient :) We'll be cruising soon!

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I couldn't believe how well it went on 14psi, it was strong!! Definitely the most responsive T88-34D setup I've ever driven, I could imagine that extra power would be nuts. Time to drop a pair of 044's in that surge tank Deano :)

That engine is mega efficient :) We'll be cruising soon!

I can't wait mate. I think the last cruise was that awesome south coast trip, we should do that again.

Kyp got his 32 back and is running it in too. everyone's is getting back on the road!

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  • 1 month later...

How is the car coming along now s the motor back together again now, all i can say is that its going to be on next weekend and i carnt wait for the next cruise.

Lets c who has to catch who :action-smiley-069:

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hey dean, good to see you the other day at JEM when I came to catch up with bobby. is the engine back together yet?

how do you like the sard surge tank with pumps mounted inside? I'm about to do the same set-up on one of my 32s as i quite like the idea of mounting the pumps inside the surge tank (fuel is good at insulating the noise a bit and also keeps the pumps cool).

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  • 3 weeks later...

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