graememk
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| posted on 13/6/06 at 05:31 PM |
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whats the best diff ratio
ok my uncle is building another 7 we have a r1 what would be a good ratio diff to look out for ? and what would it come off.... ford please.
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Mr G
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| posted on 13/6/06 at 05:38 PM |
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3.38 from a 2.3Diesel
If you could get a 3.18 it would be even better but I doubt you'll find or want to try and buy one 
Normal is getting dressed in clothes that you buy for work and driving through traffic in a
car that you are still paying for - in order to get to the job you need to pay for the clothes
and the car, and the house you leave vacant all day so you can afford to live in it.
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Mr G
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| posted on 13/6/06 at 05:40 PM |
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Ford Diff Ratios
My 1983 2.0L Ghia had a 3.38
[Edited on 13/6/06 by Mr G]
Normal is getting dressed in clothes that you buy for work and driving through traffic in a
car that you are still paying for - in order to get to the job you need to pay for the clothes
and the car, and the house you leave vacant all day so you can afford to live in it.
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robertst
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| posted on 13/6/06 at 06:57 PM |
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so, the higher the diff ratio, the lower the acceleration, but more speed? or is it the other way around
Tom
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Simon
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| posted on 13/6/06 at 08:05 PM |
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Correct - but as you're using a bike engine, general concensus seems to be lower ratio is better - as you may find you're doing 80mph and
12000rpm!
ATB
Simon
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scottc
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| posted on 13/6/06 at 08:26 PM |
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Therefore a trip to sweden to find an automatic 2.8 V6 HC EFI.
Prob not many of those in spalding.
Great info though Mr G.
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peterriley2
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| posted on 13/6/06 at 08:44 PM |
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id watch out though as ford seemed to put very random diffs in different sierras, so they may not be the ones shown in the table above. i say this but
USUALLY the 2.3d's have either 3.38 or 3.14. an r1 is best with 3.38, but if you get a 3.14 you can make megabucks on ebay.
Joel
Joel
If you dont respect yourself, dont expect respect from anyone else
Live your dreams, dont dream your life
Women only want you for one thing- everything!
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chockymonster
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| posted on 13/6/06 at 09:00 PM |
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3.14 is too long for an R1. 3.38 is what you are looking for
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Simon
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| posted on 13/6/06 at 10:13 PM |
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I want a 3.14 but according to the above table, they're only in 7 1/2" , so may have to settle for a 3.38.
ATB
Simon
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Mr G
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| posted on 14/6/06 at 12:07 AM |
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In my post above I meant 3.14 but obviously had '8' on the brain
It's been mentioned in previous threads but the key to the chart above is the date stamp on the info (87+) regarding descrepancies with pre 87
diffs.
I think you will find 3.14's in the 7" flavour.
As also mentioned don't take the engine bay vin plate diff identification as gospel (some may say even the metal diff tag) I've had first
hand experience of the codes not tallying up to the actual ratio on the car even though it was untouched from the factory.
Cheers
G
Normal is getting dressed in clothes that you buy for work and driving through traffic in a
car that you are still paying for - in order to get to the job you need to pay for the clothes
and the car, and the house you leave vacant all day so you can afford to live in it.
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