Differential Grantura MK3 1963

[gde]

Hi,
could someone help me?
On my Grantura Crown Wheel & Pinion ratio too short !!
I am know the origin of the differential?
for change a Ratio longer (to ride on highway) 3.8 better i think?
regards

[Thurner Fan]

I think it would be an MGA/early MGB differential in your car, which I am assuming is the very nice looking dark blue one shown on the German TVR pre-80s site http://tvrpre80s.de ?

There is a useful list of the ratios used for various cars here http://mgaguru.com/mgtech/rearaxle/ra201.htm.

Looks as though there was a 3.909 for the early MGB which, if you can locate the correct crown wheel and pinion, should give you a quieter ride on the motorways.

Hope this helps.

TF

Edited by Thurner Fan on Wednesday 10th August 17:21

[gde]

Thurner Fan said:

I think it would be an MGA/early MGB differential in your car, which I am assuming is the very nice looking dark blue one shown on the German TVR pre-80s site http://tvrpre80s.de ?

yes that's my car. thank you. I just installed the weber and a differential noise "clac' clack..."
Today my Grantura always wants to go faster 5000 tr/minutes...it's too much for long drive
Thank you for help. Greg

There is a useful list of the ratios used for various cars here http://mgaguru.com/mgtech/rearaxle/ra201.htm.

Looks as though there was a 3.909 for the early MGB which, if you can locate the correct crown wheel and pinion, should give you a quieter ride on the motorways.

Hope this helps.

TF

Edited by Thurner Fan on Wednesday 10th August 17:21

[gde]

help me for finish mounting a differential? I found Crown wheel 3.7 correct, is perfect thanks Thurner.
BUT SEARCH, full Parts AROUND CROWN WHEEL Rolling & Sealtrainer Gasket (for this differential specific Grantura)
another brand or customized by TVR?
sorry for my bad speak english

[RobMk2a]

Try Moss Europe or Brown & Gammons.

They should be able to source MGA differential parts.

Rob

[gde]

Thank you Rob. Moss is precisely where I found the Crown Whell 3,7. ; I questioned them for bearings and seals. Best Regards Greg

[Astacus]

The seals are not specially made for TVRs they are standard off the shelf items. Measure it up and contact a seal company and they will easily find you an equivalent.

[Astacus]

The seals are not specially made for TVRs they are standard off the shelf items. Measure it up and contact a seal company and they will easily find you an equivalent.