9 Second Gtst In The Uk

[ahapartridge]

It may well have been posted on this forum already but if not I just wanted to share the news from the UK.

At Santa Pod yesterday (25/6) John Bradhaw in 'Project GTST' ran a 9.9 backed up by a 10.02

This car has undergone major work over the last few months by Gary Passingham at GT-Art and is still only in the shakedown stages at the moment

You can find lot more information about the car at www.projectgtst.com but the basics are that it is a R33 GTST using a bored/stroked RB25 and running a T51SPL

Still to come on the car is an Xtrac gearbox (standard box was used yesterday ) , the NOS has not been used yet either and the suspension still has a lot of development work to be done too

[ctjet]

job well done... sounds like a big $$$ job

haven't Sub-Zero made a 9sec gtst aswell

[blk180]

Sub-Zero in oz this is a UK car

Great time any videos

Brad

[Andy W]

there was this one of the next run

http://s42.photobucket.com/albums/e306/h16...t9secgtswmv.flv

[2rismo]

Just a couple of things.

First, AWESOME work by the projectgtst guys! Car looks and sounds sensational.

Second, Slicks on the back and radial fronts @ 140mph?!?!?!

Lastly, It's not yet the WORLD'S fastest gtst but its getting there quickly.

Well done.

Adrian

[Andy W]

got a time for the fastest then, the figure of 10.12 was mentioned yesterday ?

[MrBlonde]

Well done! Good to see it with the better gearbox and nitrous activated.

[2rismo]

From www.projectgtst.com

After much searching I finally managed to find the following information on Drag GTST's.

A) The best 1/4 mile time to date worldwide for the RB25 GTST was achieved by Ryan Quinn from Victoria, Australia. Ryan ran at Calder Park and managed a 1/4 mile of 10.12 secs @ 136.3 MPH !!!

B) The best time worldwide for a GTST regardless of engine spec was achieved by a fellow Australian, Brett Whitbread using a RB26/30. Brett ran at Willow Bank and got a 9.464 sec run @ 150.9 MPH !!!

Adrian

[ahapartridge]

Just a couple of things.

First, AWESOME work by the projectgtst guys! Car looks and sounds sensational.

Second, Slicks on the back and radial fronts @ 140mph?!?!?!

Lastly, It's not yet the WORLD'S fastest gtst but its getting there quickly.

Well done.

Adrian

Keeping the RB25 was a very important part of the project, as is keeping the original rear suspension layout rather than going for a tubbed rear end like a couple of the quick RWD cars have opted to over here.

[2rismo]

I will have to confirm but I don't believe the 9 sec GTS i listed was tubbed at all - I think it ran on a 10.5" tyre.

Can you tell me the reason for radial fronts and crossply slick rears? Looks dangerous to me - or am I missing something?

Adrian

[ahapartridge]

I will have to confirm but I don't believe the 9 sec GTS i listed was tubbed at all - I think it ran on a 10.5" tyre.

Can you tell me the reason for radial fronts and crossply slick rears? Looks dangerous to me - or am I missing something?

Adrian

I don't know why John ran that tyre combination, he will be the first to admit that he is a complete novice when it comes to drag racing.

Can you tell us the reason why it is a bad idea to run the radials on the front? I assume the comparative lack of grip compared to a slick should you need to correct it mid strip is the issue?

[Trust33]

How good was that.Big turbo.I diddnt think that it was capable of 9s on a 25det.

Doesnt bu5ter run the same in his but with a 3l block 26 head.Though he is in full steet trim.

[MrBlonde]

How good was that.Big turbo.I diddnt think that it was capable of 9s on a 25det.

Doesnt bu5ter run the same in his but with a 3l block 26 head.Though he is in full steet trim.

Brett's hotside is rated at 85 bhp, not 1,000 bhp like the big boy trim.

[1JZ.747]

the subzero cr was not tubbed, it still ran the factory rear end, then used welded up shock absorbers to keep the camber flat and used the sof side wall of the slick tyre as the suspension. it was well documented inthe zoom article.

[2rismo]

I don't know why John ran that tyre combination, he will be the first to admit that he is a complete novice when it comes to drag racing.

Can you tell us the reason why it is a bad idea to run the radials on the front? I assume the comparative lack of grip compared to a slick should you need to correct it mid strip is the issue?

Crossply tyres 'wander' as you accelerate down the track and radial tyres don't. What you find is that the back starts to sway as you get faster and faster while the radial tyres on the front track straight and true for the duration of the run.

You end up with an ever-increasing pendulum effect that can end in disaster. Please make sure John buys some crossply front-runners before racing again. Ask him if he noticed any swaying in the deep end that he had to correct.

Over here our regs state that if your cr is quicker than 12.50 and you run crossply (slicks) on the rear, you MUST have crossply fronts.

Brett's T51R is the KAI variant and is rated at 850hp not 1000hp like the SPL in this gtst.

Adrian

[ahapartridge]

Crossply tyres 'wander' as you accelerate down the track and radial tyres don't. What you find is that the back starts to sway as you get faster and faster while the radial tyres on the front track straight and true for the duration of the run.

You end up with an ever-increasing pendulum effect that can end in disaster. Please make sure John buys some crossply front-runners before racing again. Ask him if he noticed any swaying in the deep end that he had to correct.

Over here our regs state that if your cr is quicker than 12.50 and you run crossply (slicks) on the rear, you MUST have crossply fronts.

Brett's T51R is the KAI variant and is rated at 850hp not 1000hp like the SPL in this gtst.

Adrian

Cheers for that Adrian

I think the 'tubbed' issue I mentioned was maybe taken the wrong way, what I meant was a couple of the 'quick' RWD cars over here in the UK have gone for a proper drag set up on the rear end, one in particular is the CRD Supra which runs the 9's but will no longer be allowed to run in the street legal class.

The car will not run in competition again until October so we have a long wait to see how the NOS and sequential Xtrac box will improve the times

[MrBlonde]

the subzero cr was not tubbed, it still ran the factory rear end, then used welded up shock absorbers to keep the camber flat and used the sof side wall of the slick tyre as the suspension. it was well documented inthe zoom article.

Shane, effectively turning the IRS into a live axle.

[1JZ.747]

Shane, effectively turning the IRS into a live axle.

yea thats the idea, i spoke to some suspension people about trying it, but was basically told they didnt want to aid in my hurting myself, there view on it was too dangerous, my car has fortunately worked out to sixty foot quite well so the idea is now long gone.

[2rismo]

my car has fortunately worked out to sixty foot quite well so the idea is now long gone.

No doubt! But what has changed to make it leave slower since May '05?

[1JZ.747]

No doubt! But what has changed to make it leave slower since May '05?

i woudl sugest the convertor has been part of the problem and also in the last 4 months the bigger turbo