Ba Ii Gt Qtr Mile Timeslips

[KS290]

Hi, I’ve attached 4 timeslips from my last visit to Willowbank. What I was wondering is from the speeds achieved (best being 103 mph) what would the car be capable of with a harder launch?
As it is daily driver I took it really easy off the line, just rolled it off and then floored it. The rear tyres were pretty shot as well so the grip wasn’t there at the top end of first gear.
The car is 6spd manual, stock except CAPA 2.5” S/S catback exhaust and a BMC Filter with dual entry.
Looking at the cars as I was up against I was thinking a 13 second pass would be possible with a harder launch especially as I now have new rear tyres.

[RG]

With a trap speed of 103 a 13 is possible, you just need to get the launch right.

[XA-Coupe]

13 second easy.. the trick is the launch. These are big cars to get off the line but you should be able to get a 2.0 60 footer without too many clutches to show for it !

[ADSXR8]

Originally Posted by XA-Coupe

13 second easy.. the trick is the launch. These are big cars to get off the line but you should be able to get a 2.0 60 footer without too many clutches to show for it !

Agreed

Just looking at the slips and the BF XR8 did a 14.0 @ 102 with a 2.1.

A regular up at WIllowbank is "tweeked", he seems to be a BOSS manual guru. He can assist with some launch tips.

Just don't get too excited out of the hole, with street tyres and manual gear box 2500rpm should have you covered. See that 60ft tumble.

[XA-Coupe]

Heres what can be done with a BA1 XR8 ... only mods are a CAI. This was pre edit availability on SP3 or 9000s, cant remember. The point being is getting off the line is the critical part.

Heathcote Drag Pass

[TUF270]

i know this is a little off topic, but based on my BA XR8 manual doing 13.6s with how it drives atm, and trap speeds of up to 107.5mph what sort of times should i be expecting? my 60ft times were around 2.3 aswell.....

sorry 4 hijacking

also stock i did 14.3 @ 103mph with 2.4 60fts

[FreddyDUZ747]

107MPH is a 12.6/12.8 by my experience.Is that with stereo?

[TUF270]

Originally Posted by gilmore

107MPH is a 12.6/12.8 by my experience.Is that with stereo?

yea mate, that was full street trim,sound system, spare wheel and 3/4 fuel all included and running on my 20" wheels.......

i wish i could get it to go that quick lol

[Quadcams]

Originally Posted by TUF260

yea mate, that was full street trim,sound system, spare wheel and 3/4 fuel all included and running on my 20" wheels.......

i wish i could get it to go that quick lol

Some sticky tyres, good track, a good launch (1.8 60ft) and some good driving 12.8's is very achievable with 107mph.

[schnoods]

Its all in the 60 ft. :

any tenth you can shave off generally saves a few at the end of the strip.

Also a very shallow stage also helps with the ET too...

[TUF270]

can i do 1.8 60ft times with the stock driveline though? i've only got stock clutch stock diff gears and its only a 5speed

[tweeked]

Yep your 60ft is where you can make immediate improvements. On street tyres without being brutal you should be able to get that down to 2.0 flat pretty easily. 1500-2000 rpm with a gradual (over the full 60ft) clutch release will get that. Just dont dump the clutch.

.5 off your 60ft will see about .6-7 off your et, and you will be in the mid to high thirteens. With 103mph i think you could end up around 13.4 with a 1.8 60ft, but you will need to warm those tyres with a bit of a burnout and an extra 1000rpm, right up near the wheelspin point to get that. Keep practising!!

[CRAIGAU3220]

Originally Posted by TUF260

can i do 1.8 60ft times with the stock driveline though? i've only got stock clutch stock diff gears and its only a 5speed

I dont think so, 3.9 diff gears and sticky tyres will get you 1.8 60ft.