2002 Bnr34 Gt-R V-Spec Ii

[HIRISK]

Update.

I picked up the car from Racepace today.

Since the first tune on this car back in October 2012 I have changed the exhaust system and now all the standard intake items have been re-installed.

So I asked them to do a re-tune and make it a bit more responsive (existing tune was a track safe tune so was a bit rich).

So we upped the boost from a previous 18/19psi to 19/20psi this time around and also played around with ignition timing etc.

The end result is AWESOME, the way the car drives now is SO much better. It is so much more responsive and so much easier to drive, less labored and more responsive.

The peak power numbers do it no justice, it is all in the torque and power delivery, so much better now.

Old Track Tune: 349.6 rwkw (4th gear)

New Street Tune: 353.4 rwkw (4th gear)

New Street Tune: 359.6 rwkw (5th gear)

Apparently the dyno was hitting some limiter in 4th gear?

Apparently that is why you see the sudden drop at the end of the power curve?

But the 5th gear run allows the run to rev right out?
Can someone explain this to me?

Here are the old and new 4th gear runs overlayed with POWER and TORQUE:

Here is the new 5th gear run with POWER and BOOST:

[HIRISK]

Here is a photo of the factory BOV's installed.

I am running them as vent to atmosphere for the moment, just until I can source the right BOV return pipe.

Installed a filter just to keep the dust and water out.

[HIRISK]

And here is another photo of the new engine bay set up...

[Piggaz]

Nice result.

Do you still feel like it needs more down low or are you happy (for the time being )

[HIRISK]

Thanks Piggaz,

Good question.

At the end of the day I know there is more that can be done with the current set up, so I will continue to develop it until such point that no more can be done.

When I hit that stage I will then commit to a full rebuild with a forged bottom end.

Next round of mods for the current set up will be...

1) Remove 3" high flow cat and replace with Venom 3.5" in/out 5" body high flow cat

2) Remove Tomei cams and install standard cams

3) Install cam gears

4) Re-tune to suit above changes

I will probably do all this in November / December.

[HIRISK]

Just got back from Calder Park.

Not sure how I feel? But one thing is for sure, my driving skills are clearly getting worse as I get old.

Anyway, the three runs I did were...

RUN 1: 13.591 @ 119.89mph (2.712 60')

RUN 2: 12.965 @ 114.14mph (2.019 60')

RUN 3: 13.016 @ 116.17mph (2.265 60')

I think the expectations my old R32 GTR set were too high.

In my R32 GTR I ran a 11.573 @ 117.89 mph (1.712 60') with at least 60rwkw less than in my 34 GT-R.

But the 32 was running stock suspension (good squat) and stock 16" wheels with chunky Advan A048R's on the rear - must have made a big difference.

Oh well, it is what it is.

[frf747]

car was clean as last night, job very well done with it...looked a million dollars on the track
I was a little bummed with the times the car was running, to me it felt like it had a lot more in it,
were you having some issues, or not pushing it hard?

-Ender

[HIRISK]

Thanks.

I am not sure what the issue was.

I think a combination of bad driving and maybe clutch?

But he mph was OK, so once I get my driving sorted and maybe a new clutch I should run maybe a high 11.

[Piggaz]

Definately a high 11 with 119 mph trap speed. Those 60 foot times need a bit of work though haha.

[dgtr]

Did u want to sell your trust intake pipes?? Call me 040 008 5655

[XRR-88D]

Anyone know how to get in contact with Shaun or know if it is still in his possession?

I bought a rolling shell out if Melbourne in December that was originally w.a based. A lot of distinguishable features, I think I own this exact car