the car is running a 1800 diff and has had a 2.5 conversion done what would the best diff be and who would have one at sensible pennies help please
the car is j reg
what diff do i need
Moderator: martauto
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manse73
- E30 Zone Camper

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Sebring grey motorsport convertible
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Brianmoooore
- E30 Zone Team Member

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You don't say what model, but you need a 3.64 (my choice), 3.73, or (boy racer choice) a 3.91.
These are all likely to come fitted in the larger 188 medium case diff., but will fit in place of your small case version with a small adjustment in prop. length, as long as the diff comes complete with output flanges.
These are all likely to come fitted in the larger 188 medium case diff., but will fit in place of your small case version with a small adjustment in prop. length, as long as the diff comes complete with output flanges.
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manse73
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The car is a j reg cabbie that started life as a 318. Would it be best to get a prop rather than adjust the length
Sebring grey motorsport convertible
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ross2009
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kev on the props they have a slide adjuster on the middle of them you undo the big nut in the middle slide the rear secion of the prop out to the output flange of the diff then do the nut bk up its like a pinch sleeve the nut clamps the prop

