Griff 500 Power etc

[phazed]

Try this website.

http://www.torquestats.com/modified/index.php?pid=...

Amazing how accurate it is. My 1/4 mile ET was within 3/100 of a second!

RWD - 400bhp & 1060kg
Power to Weight: 384 bhp/ton
0-60: 3.8
0-100: 8.2
60-100: 4.4
1/4 Mile ET: 11.86
1/4 Mile Terminal: 120
Dragstrip 1/4 Mile ET: 11.66
Dragstrip 1/4 Mile Terminal:

[phazed]

From another site using 0-60 foot times. Mine would be about 3.2 seconds, (using drag radials).

From here.

https://www.mr2oc.com/49-drag-racing/86-converting...

posted by NoShoes
This is assuming a somewhat linear rate of acceleration, with a FAST 1-2 shift. It's in line with what I have measured with a G-tech accelerometer.

Have fun!

2.3 second 60' time = 35.5 mph @60' = 7.0 second 0-60 time
2.2 second 60' time = 37.1 mph @60' = 6.5 second 0-60 time
2.1 second 60' time = 38.9 mph @60' = 5.9 second 0-60 time
2.0 second 60' time = 40.9 mph @60' = 5.2 second 0-60 time
1.9 second 60' time = 43.0 mph @60' = 4.6 second 0-60 time
1.8 second 60' time = 45.5 mph @60' = 4.0 second 0-60 time
1.7 second 60' time = 48.1 mph @60' = 3.4 second 0-60 time
1.6 second 60' time = 51.1 mph @60' = 2.9 second 0-60 time
1.5 second 60' time = 54.5 mph @60' = 2.2 second 0-60 time
1.4 second 60' time = 58.4 mph @60' = 1.5 second 0-60 time
1.36 second 60' time = 60.0 mph @60' = 1.36 second 0-60 time
1.3 second 60' time = 62.9 mph @60' = 1.2 second 0-60 time
1.2 second 60' time = 68.1 mph @60' = 1.1 second 0-60 time
1.1 second 60' time = 74.3 mph @60' = 0.9 second 0-60 time
1.0 second 60' time = 81.8 mph @60' = 0.7 second 0-60 time

[Classic Chim]

phazed said:

Try this website.

http://www.torquestats.com/modified/index.php?pid=...

Amazing how accurate it is. My 1/4 mile ET was within 3/100 of a second!

RWD - 400bhp & 1060kg
Power to Weight: 384 bhp/ton
0-60: 3.8
0-100: 8.2
60-100: 4.4
1/4 Mile ET: 11.86
1/4 Mile Terminal: 120
Dragstrip 1/4 Mile ET: 11.66
Dragstrip 1/4 Mile Terminal:

That’s outrageous
I’ve just put my figures in and it says 4.4 to 60 but spookily 12.59 1/4 mile,,, I did 12.60 1/4 mile,,, the driver was on it then
The timings don’t appear to match up with our get away speed but then we were giving it large

The start can make such a difference. As soon as I sorted the wheel spin I was regularly getting into the high 12’s so non of this is particularly accurate as ambient temps and general road grip can make a few 10ths difference let alone a slick gear change but it does show the cars are capable of some very impressive times given the right circumstances.

[Classic Chim]

phazed said:

From another site using 0-60 foot times. Mine would be about 3.2 seconds, (using drag radials).

From here.

https://www.mr2oc.com/49-drag-racing/86-converting...

posted by NoShoes
This is assuming a somewhat linear rate of acceleration, with a FAST 1-2 shift. It's in line with what I have measured with a G-tech accelerometer.

Have fun!

2.3 second 60' time = 35.5 mph @60' = 7.0 second 0-60 time
2.2 second 60' time = 37.1 mph @60' = 6.5 second 0-60 time
2.1 second 60' time = 38.9 mph @60' = 5.9 second 0-60 time
2.0 second 60' time = 40.9 mph @60' = 5.2 second 0-60 time
1.9 second 60' time = 43.0 mph @60' = 4.6 second 0-60 time
1.8 second 60' time = 45.5 mph @60' = 4.0 second 0-60 time
1.7 second 60' time = 48.1 mph @60' = 3.4 second 0-60 time
1.6 second 60' time = 51.1 mph @60' = 2.9 second 0-60 time
1.5 second 60' time = 54.5 mph @60' = 2.2 second 0-60 time
1.4 second 60' time = 58.4 mph @60' = 1.5 second 0-60 time
1.36 second 60' time = 60.0 mph @60' = 1.36 second 0-60 time
1.3 second 60' time = 62.9 mph @60' = 1.2 second 0-60 time
1.2 second 60' time = 68.1 mph @60' = 1.1 second 0-60 time
1.1 second 60' time = 74.3 mph @60' = 0.9 second 0-60 time
1.0 second 60' time = 81.8 mph @60' = 0.7 second 0-60 time

I do like these kind of stats,
So my fastest recorded time I did 60’ in 1.84 seconds which is about 4 seconds or just over, but this wasn’t my fastest 0-60 ft times as I’d got away better on a number of occasions, I’ve chucked the bloody slips away now so can’t check but seem to remember 1.7 or lower but at the time didn’t take much notice or realise the relevance of the 0-60 ft times as I was only really interested in the 1/4 time.
Very interesting stuff.

[phazed]

Alun, your best was 1.842 secs. That would give you a 4.2 secs. Pretty good for a 4.6.

[neutral 3]

All I can say is this. A few years ago, I had the use of a customers OE spec 94 500 for a few days after servicing it etc etc.
My " tweaked" ex Steve Heath 98 model 500 was at that time my daily driver and It was dynoed @ 299 hp back in circa 2002 ( but I take All dyno figures with a Large pinch of salt ) ( Steve details some of what he did to modify it, in the Bible )
Steves car still feels shatteringly quick to 100 and every time I booted it from a std start I would mutter to myself " f... this car is fast" ( and I regularly ride Super Bikes )
My first Griff back in 2007, was a de catted 95 500HC model ( N435 DDY Where in Germany are you Now ?? ) and it also felt v quick - No Scooby could get near it ) but not as quick as Steves old Griff.
Anyway, the first time I drove the 94 Griff, my instant thoughts were " This thing feels So bloody slow " !!
I briefly owned a lovely, totally std 97 Chimp 500 and yet Again, my first thoughts as I booted it on the way back from buying it were " This thing is so slow compared to my Griff " .
So in my experience, the difference in a std car to a tweaked car, is Very noticeable !!

Edited by neutral 3 on Sunday 30th December 12:20

Edited by neutral 3 on Sunday 30th December 12:22

[ianwayne]

A friend of mine had a succession of new TVRs back in the 90s, both Chimaera 500s and Griffs. He was convinced the Griff was faster and received wisdom (or dealer heresay?) is that to maintain them as the halo model, the Griffs were closer to the published bhp figures than the Chimareas were. ECU tweaks? Unlikely I'd say, but the ECUs were marked up as to which car they were for, even if it was only with marker pen.

[phazed]

All the Chimaera's and the Griff 500s were exactly the same.

Some years ago at a TVR get together the crazy horses dyno was set up. All the 500s produced a maximum of 274 bhp, ( many produce less!) . My 4.6 with a few tweaks produced 276 bhp.

I am sure there is a natural variation in between cars but only a few BHP. In the real world it is very hard to tell the difference between a car that has 275 BHP and 300 BHP. You may just feel a slight seat of the pants difference.

Again this slight difference is hardly noticeable on track and it is only when you have 50 BHP more than the other car then a difference is noticed.

[anonymous-user]

Seem to remember tuners saying you would need more than 10% difference in power before you noticed the performance increase - sounds about right?

[RichB]

TVRMs said:

Seem to remember tuners saying you would need more than 10% difference in power before you noticed the performance increase - sounds about right?

With some Tim Lamont and Mark Adams stuff we added 60 bhp to mine and it's quite noticeable.

[anonymous-user]

20-25% at a guess Rich?

[RichB]

Indeed 22.5%, 265 bhp. to 325 bhp. and 325 lb ft. Nicely balanced between top end and torque.

[griffdude]

phazed said:

Try this website.

http://www.torquestats.com/modified/index.php?pid=...

Amazing how accurate it is. My 1/4 mile ET was within 3/100 of a second!

RWD - 400bhp & 1060kg
Power to Weight: 384 bhp/ton
0-60: 3.8
0-100: 8.2
60-100: 4.4
1/4 Mile ET: 11.86
1/4 Mile Terminal: 120
Dragstrip 1/4 Mile ET: 11.66
Dragstrip 1/4 Mile Terminal:

My Griff was 1092 kg without me in it when weighed for the TVR Speed Championships, don’t forget to add your driver weight.