neilp1
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| posted on 18/9/10 at 07:30 PM |
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What diff on donor sierra
I've just collected my donor sierra. It is a 2.0 Dohc 1990 (h). Does anyone know what diff this will be (7 or 7.5) as I'm building a tiger
avon and have been told that the 7.5 diff doesn't fit.
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jacko
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| posted on 18/9/10 at 07:42 PM |
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My donor was a G reg it had a 7in diff and was a 3.64 if that helps
Jacko
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Hellfire
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| posted on 18/9/10 at 07:55 PM |
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The vast majority of Sierra diffs are 7". There was a 3.77:1 diff which measures 6.5" but you'd be extremely lucky to find one of
those. They're even rarer than the 3.14........
Phil
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RAYLEE29
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| posted on 18/9/10 at 08:36 PM |
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My 2.0 dohc j reg estate had a 7.5 3.9 diff
its now fitted to my haynes with a modded lhs bracket.
the way to tell is that the top mount where the long bolt goes through is roughly 7.5 inches on a 7.5 and roughly 7inches on a 7 also there should be
a tag to tell you the ratio
theres a list on here somewhere do a search for sierra diff codes.
but remember its possible somone could have changed it somrtime
Ray 
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Chippy
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| posted on 18/9/10 at 10:32 PM |
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I think that all the 2 Ltr DOHC's were 3.91. HTH Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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matt_gsxr
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| posted on 18/9/10 at 10:49 PM |
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those 6.5inch ones have different inner CV joints too. Its not one of those as they only came on early small engined variants.
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