gkn diff to hand

[neal1980]

Does anyone have one to hand they could measure for me

Width
Depth
Height

Many thanks if anyone has one

[Toma500]

Got one in the kitchen W320mm L420mm H250mm measured with swmbo clothes measuring tape so not exact.

[Brummmie]

neal1980 said:

Does anyone have one to hand they could measure for me

Width
Depth
Height

Many thanks if anyone has one

have you found a 2.9?

[neal1980]

Thanks for measuring that in the kitchen lol sounds like my house

Found a 2.88 Paul, need to work out with a tko600 and 18" wheels what my gearing would be. Can anyone tell me how to work that out or software that can do it for me.

Thanks

Neal

[RichardD]

neal1980 said:

... need to work out with a tko600 and 18" wheels what my gearing would be. Can anyone tell me how to work that out or software that can do it for me.

Thanks

Neal

What width/profile would the tyres be?

[neal1980]

Running 18" spiders with 255 35 18 tyres.

Tremec TKO600 5 speed, ratios; 1st 2.87 2nd 1.89 3rd 1.28 4th 1.00 5th 0.82

Thanks

Neal

[RichardD]

Based on a 6000rpm redline :-

1st = 55mph, 2nd = 83mph, 3rd = 124mph, 4th = 160mph, 5th = 202mph (with enough bhp!!!)

[neal1980]

thanks for that

Shooting for 650-700bhp so should have the power

[RichardD]

with a .036 (the Griff being 0.344 supposedly) drag coefficient 520bhp is needed for the double ton, but the last few mph gets painfully slow acceleration wise so

520bhp would need about five miles to get there.

600bhp gets there in about a mile and a half.

[neal1980]

Interesting stuff cheers Richard.

I'm building an ls turbo for a Chimaera redline should be 7000rpm what would that do for the gearing?? Not sure I would want to try top speed lol

Are you using some software to calculate this???

[Brummmie]

The GKN is not as tough as the BTR though?

[tvrolet]

neal1980 said:

Can anyone tell me how to work that out or software that can do it for me.

I can send you a spreadsheet that I used for mine (already has all the TKO600 ratios and the available final drives in it), but can't do attachments via PH mail. If you want to email me an address I'll send it on.

Edited by tvrolet on Wednesday 25th April 10:28

[RichardD]

neal1980 said:

Interesting stuff cheers Richard.

I'm building an ls turbo for a Chimaera redline should be 7000rpm what would that do for the gearing?? Not sure I would want to try top speed lol

Are you using some software to calculate this???

7000/6000=1.16667 (recurring, insert as many sixes in there as you like)

Just multiply the earlier numbers by 1.16666667 to get new in gear max speeds.

Yes, using Cartest2000 (have got lots of models of different combinations of gearboxes, diffs, engines and tyres in TVRs over the years!).

[neal1980]

Brummmie said:

The GKN is not as tough as the BTR though?

I'm moving away from TVR's GKN and BTR diff, want something bigger, got something thats used up to 1000bhp now If I can squeeze it in which I think I can

Edited by neal1980 on Wednesday 25th April 10:32

[neal1980]

tvrolet said:

I can send you a spreadsheet that I used for mine (already has all the TKO600 ratios and the available final drives in it), but can't do attachments via PH mail. If you want to email me an address I'll send it on.

Edited by tvrolet on Wednesday 25th April 10:28

Thanks mate its [e-mail]