WhiteV Posted December 5, 2012 Share Posted December 5, 2012 Hi = Occasionally 3.63 diffs turn up on ebay but in the main they are 4 stud from 1500 Spitfire. My question is there any likely problems or concerns in use fitting a 4 stdto a Vitesse which is normally 6 stud diff attachment. Kind regards Quote Link to comment Share on other sites More sharing options...
Paudman Posted December 5, 2012 Share Posted December 5, 2012 Unless there's any problem with the Vitesse that I'm not aware of, you can use the 4 stud fixing to convert to swing spring rather than retain the fixed spring arrangement. I did it on my GT6 firstly by blanking off two stud holes on the old diff, then replacing that with a 3.63 diff later on. Quote Link to comment Share on other sites More sharing options...
heraldcoupe Posted December 5, 2012 Share Posted December 5, 2012 4-stud is fine for a swing spring conversion.Don't be tempted though to simply omit the two studs and stick with the fixed spring. The top plate isn't strong enough without the additional studs to spread the load, I have seen them break on two different Heralds,Cheers,Bill. Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted December 6, 2012 Share Posted December 6, 2012 Recommend swapping the rear housing with a 6 hole one from a 3.89 diff. Not hard.3.63 is a good ratio for a 2L Vitesse.Nick Quote Link to comment Share on other sites More sharing options...
WhiteV Posted December 6, 2012 Author Share Posted December 6, 2012 Hi guys -- Many thanks for the replies. I will be retaining original fixed spring so I might look into Nick's suggestion of changing over the housing. Kind regards. Quote Link to comment Share on other sites More sharing options...
IVANHOE Posted December 6, 2012 Share Posted December 6, 2012 My vitesse has a 3.63 and only has the 4 studs, I've been using it like that for the past 4 yrs.I'm not saying it's "right" ............ but it's fact. Quote Link to comment Share on other sites More sharing options...
SRF Posted December 7, 2012 Share Posted December 7, 2012 I don't intend hi jacking this post, but I also intend changing to a 3.63 diff and will use the original rear housing. I have managed to get part of a 3.63 diff. I have removed the crown wheel and pinion and if I have the nerve I will swap them over in the spring. If I see sense over Christmas I may take my own diff and the 3.63 Crown Wheel and Pinion and have it re conditioned by an expert with the 3,63 ratio. Has anybody ever done a differential???? Quote Link to comment Share on other sites More sharing options...
JohnD Posted December 7, 2012 Share Posted December 7, 2012 No, I've always asked Mike Papworth to rebuild my transmissions.He advertises in the Courier - oops, CT mag?0776877517002476644499Good reputation, and reasonable, not cheap pricesJohn Quote Link to comment Share on other sites More sharing options...
Davemate Posted December 7, 2012 Share Posted December 7, 2012 JohnD wrote:No, I've always asked Mike Papworth to rebuild my transmissions.He advertises in the Courier - oops, CT mag?0776877517002476644499Good reputation, and reasonable, not cheap pricesJohnI agree very good service,not the cheapest as John said but you get what you pay for He will be the only man I will use Quote Link to comment Share on other sites More sharing options...
Paudman Posted December 9, 2012 Share Posted December 9, 2012 4874 wrote: Has anybody ever done a differential????I rebuilt two Herald ones - seals, bearings etc - but when it came to the faster GT6 version I took it to Mike. I just wanted to be sure at... ahem.... higher speeds.... Quote Link to comment Share on other sites More sharing options...
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