Not sure TBH, thats why i said 110-120, i would have guessed it could do 110 in 4th, given that the uk will do 130.

 

Im saying that if he had to change into 5th gear, then it makes the time even more impressive.

 

Yeah i know, but i am saying that the benefit of the RA gearing still outweighs the disadvantage of changing gear an additional time to a UK geared car?

Steven

 

So according to another thread, 4th max is about 106 on an RA.

 

I dont understand what you are saying.

If with a Type RA gearbox, you have to use 5th gear to reach 118mph, whilst with a uk spec gearbox, you can use 4th gear to reach 118mph, surely it makes the type ra's time more impressive cos he had to make another gear change.

 

I feel the need to post my 1:st real attempt (well proud actually of it) .

12.726 , 1.77 60-ft and a trap speed of 110.6 mph.
Timed at a proper dragstrip.

The spec at the time:

MY00 Turbo
VF23 @ 1.4 bar held
HKS fmic
iON 4-1 header
Scoobysport dp
BLitz Nürspec R
Link
440 cc injectors (stock)
Stock euro gearing
16" MY00 wheels with r-compound rubber.

All interiour left in the car, and run on regular 98 ron fuel.

It's a car that's used almost every day, and has never missed a beat - apart from when the tranny shat itself.

If I'll get a chance to, I'll give it a go again - alot has happened since last time...

/J

 

 

Quarter mile racing does not benefit cars with shorter ratio gearboxes.

The type ra will have a weight advantage, but a gearing dissadvantage over the quarter mile.

 

Secret Agent Man - Nice 60 foot time. It really helps get your time down when you get a really good launch.

 

My Ra only runs to 95 mph in 4th The short gearing makes if 'feel' quick but I consider it loses you time on the 1/4m due to the extra shift as was said earlier.

The AP22 shows the even gear shifts to cost 0.4-0.5 secs and the odd gear shifts (across gate) to cost 0.6 to 0.7 secs. This is not actual time lost on the run (as you still maintain speed without accelerating) It does affect the time but it mainly hits the MPH figure

My new gearing will do the 1/4 in 4th to save some time

 

with a 13.2s/105mph at the pod this weekend I was still a long long way away from avoiding changing to 5th gear.

Would have to say that regardless of power I would think that you will always have to change up to 5th with this gearing.

 

Food for Though

360bhp, 340lb ft Torque 12.00 1/4 @ 116mph STI.

Alot of these high BHP claim's must be getting into the 11's @ 120+mph by now ?

 

So i have to get quicker then

Roll on 27th April

 

Steve - those numbers....weren't they recorded with one of them g-meter thingys? Have you got a 60-ft time?

Craig -

/J

 

J, do you mean an AP22?

No mine were recorded at Elvington on Sunday, where it was a RWYB day, mainly for bikes. They had all the timing gear etc, so i assume they are pukka times.

It was organised by www.straightliners.co.uk

Steven

 

see page one of this thread for my 60ft times

 

P20 - I was on about Dingy's (Steve's) comment.

I believe your times matey.

/J

 

OK, too many Steve's about

Sorry

 

I think your missing "doors" and "weight" of those trump cards though

pmsl @ 846bhp Go Andy

 

An old time slip I dug out from the season opener last year Engine was measured at 345bhp / 343lb-ft on Star performance rolling road a week earlier.........

 

I'd say those ET's are almost too good to be true, but that's me...

No AWD car in the 12-1400 kg league ever up north here has done 11's on 350/350-ish...best we've seen is middle 12's...

My tuppence worth..

IF they are real, I'd say you're doing something VERY right with that car of yours, and the rest of the free world is just fumbling.

/J

P.S. Please don't take it the wrong way, I'm just beyond amazed at that 11.8!

 

I'm not in the 12-1400kg league though

My 'R' rated tyres, heavy flywheel and mere 'chirp' from the tyres gave a fantastic launch Keiths 600bhp R33 Skyline was 5 car lengths back at mid track, he made up 3 of them by the line and ran 11.9 @ 120

FWIW when I fitted a FMIC and gained 24 bhp I lost 0.2 secs ET due to the increased lag

 

/J As I'm sure you are aware, the launch is critical. For every 0.1 saved on 60 foot time you can double this for the ET reduction.

If you look at my times on the previous page, the difference between the 12.2 and the 11.8 run was the launch 1.9 v 1.66

I'm not sure that I can get that same launch now with a bigger turbo, light flywheel and racing clutch

 

I say fair play to Andy..........

1.66 is a truly superb launch.

If I could get that good a launch I could potentially run a 12.6-7ish with my 310bhp , which I would be over the moon at

 

Andy - It's a truly amazing run, but still - with the references we've got up here, something is missing...and I can't work it out.

Tell us - did you put that engine of yours in a Justy?

/J

 

Sorry but i am still confused, as to how the type R or sti gearing hinders them for the 1/4?

What is the purpose of the shorter gearing then, if it is not to enable quicker acceleration?

Total and utterly confuddled now

Steven

 

Andy - Well as soon as I receive your "AP22", then you will have all the information you need.

 

I think what Andy stated was that unfortunatly the 1/4 mile is an awkward distance as it means and extra shift have a very short amount of time in the terminal gear, and that means that shift is effectively wasted. Whereas if if the run was longer he would be better off with shorter ratios.

Setting up gear ratios is important in any racing.

 

Dizzy - Well said. You took the words right out of my mouth.

One thing I would say about racing at Crail is that the times are in most times quicker than at Santa Pod. It doesent mean to say the times are inaccurate, but perhaps better racing conditions.

I know of a few Renault 5 GTTurbo's who have run mid 13's at Crail, but when racing at Santa Pod with the same spec, were unable to break into the 13's, only reacing early 14's.

The point is that Santa Pod is considered to be where "everbody compares times to", and along with bhp figures, can vary from place to place.

I have found the 2 most accurate places to gain performance figures are at Santa Pod for the quarter mile, and Power Engineering for bhp figures.

I am not saying these are the only places that show accurate figures, but feel that most people recognise these places as being the most accurate.

I have also raced at Bruntingthorpe, using the Racelogic timing gear, and I thought the quarter mile figures were pretty accurate, but the track was down hill, so where do you draw the line.

 

Dingy - Lol. There will always be discrepensies. We all know that the rollers can be "fixed", and if your tracking is out, it will mislead the figures.