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  #1  
Old 15th March 2011, 02:15 PM
Andy_B Andy_B is offline
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After a quick google and removing the tag from the diff its a 3.91:1 ratio...please tell me this will be ok....???
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Old 15th March 2011, 02:32 PM
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loony loony is offline
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You have to modify chassis/diff mount plate - not diff itself.
I don't think that chopping diff is a good idea

3.91 it's quite short ratio... it depends what you expect, but top speed will suffer...

I think standard Sierra diff is 3,62:1 ratio and is more suitable for lightweight roadster.
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Last edited by loony : 15th March 2011 at 02:34 PM.
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Old 15th March 2011, 03:22 PM
Eternal Eternal is offline
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I did this the other day on a 7.5" was not too much trouble.

Last post on this page http://www.haynes.co.uk/forums/showt...t=4468&page=13
and first post on this one http://www.haynes.co.uk/forums/showt...t=4468&page=14

If you get a 2nd bracket and weld it to the edge of the bracket so its flush then cut out the top of the original bracket. All you then need is a longer bolt m12x60 and a 28mm spacer.
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Old 15th March 2011, 03:41 PM
Andy_B Andy_B is offline
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Thanks Guys...Eternal especially...i even commentet on your work and it didnt click....i have some steel plate left over so will hack out another bit for the mount...thanks again
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Old 15th March 2011, 04:04 PM
Eternal Eternal is offline
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I have some spare 25mm round ally bar if you want i can drill and make you a spacer. Just let me know how wide you want it and your address and i will make and send it off.
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Last edited by Eternal : 15th March 2011 at 04:10 PM.
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Old 15th March 2011, 04:31 PM
Andy_B Andy_B is offline
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Thanks very much for the offer Eternal but i have (or my work) has a good supply of steel and some lathes etc etc
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Old 15th March 2011, 04:36 PM
Eternal Eternal is offline
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Sure thing. Offer open if required.
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