0-60 TIMES

[Aland]

DO THE GRIFFS RUN A 4.1 0-60 TIME LIKE TVR CLAIM AS THEIR HORSEPOWER FIGURES SEEM A LITTLE OFF? CHEERS

[gerjo]

Never measured it, pretty hard to do without special equipment; also, a lot depends on a good start.

I think a Griff 500 is well under 5 s.

What I did measure was 40 - 100 mph in third gear; this takes the car through the whole rev range and it's easier to measure. Result: 7,5 s, just as fast as a Cerbera (Griff 500 with M Adams chip). Also, during the Zolder event, the 500's were just as fast in the sprint as the Cerbies, Tuscans, Tamora's.

[GreenV8S]

quote:DO THE GRIFFS RUN A 4.1 0-60 TIME LIKE TVR CLAIM AS THEIR HORSEPOWER FIGURES SEEM A LITTLE OFF? CHEERS

Potentially, yes. My V8S does around 4.5, and the 500 has more mid-range torque. But it's extremely difficult to achieve this sort of performance, and also quite hard on the car. To be honest, it's pretty meaningless except for impressing people down the pub, and there you can say what you want anyway.

[simpo one]

Talking of caning it off the line, I hear that the best place to change gear (Griff 500) is 5,500rpm as that's the maximum torque, not the red line as one might think. Is this true?

[GreenV8S]

quote:
Talking of caning it off the line, I hear that the best place to change gear (Griff 500) is 5,500rpm as that's the maximum torque, not the red line as one might think. Is this true?

Close but no cigar. Peak torque will be down at around 4100 rpm, peak power round about 5,600. Purely from the performance point of view if it was somebody else's engine, you'd want to change gear well past peak torque and peak power, in fact you'd want to take it right up to the red line. But these engines *really* don't like being revved hard, and in any case with a stock cam there's very little power at the top end so the performance gain from hanging on for that last few hundred RPM is negligeable. So in practice if it's your own car you'd probably want to keep it below 5k in normal driving, and maybe take it up to 5k5 on the odd occasion when you have something to prove.

[david beer]

My sat nav gives 1/4 mile times and 12.8 is the best so far and at 5k change up.It stores the top ten and also the location. As it automatically does it, it doesnt mean iam forever trying.

>> Edited by david beer on Monday 30th September 18:36

[jody]

David,

What sat nav system do you have, it sounds like a fun toy!!

Jo

[mel]

quote:
My sat nav gives 1/4 mile times and 12.8 is the best so far and at 5k change up.It stores the top ten and also the location. As it automatically does it, it doesnt mean iam forever trying.

Bugger that, remember the blokes that have been convicted using their own video tapes ?

[jamesk]

With my old 500 I hardly ever revved in any gear above 5000rpm. The car is telling you to change gear at anything above that imo. Anything above 5500 is pointless and potentially damaging to the components in the long term imo. I heard that the rev limiter is actually set too high to be a failsafe against engine damage/wear anyway so I never went near it.

Unless your racing a top end Ferrari or Lambo you dont need to anyway

[david beer]

Its A Clarion, and if i want to i can erase the info, just in case!

[simpo one]

'I always find on these cars 0-60 is completley irrelevant, it's 0-100 that impresses on these cars and in gear acceleration - Whats important is the urge that these cars have when accelerating well past 60, uphill too - Yeeha!'

Agreed, but in real life driving conditions I'm much more likely to be able to get to 60 than to 100 (if I value my licence...)