diff question

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RichIS
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Post Sun Jun 25, 2006 7:59 pm

wot will be the affects of fitting a 320i touring diff to a 318is if it will fit ?

cheeRS RichIS
DanThe
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Post Sun Jun 25, 2006 8:10 pm

Nothing, they are the same ratio
4.10
RichIS
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Post Sun Jun 25, 2006 8:21 pm

so there the same and a straight swap ? thats just wot i wanted to hear :twisted:
jmc330i
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Post Sun Jun 25, 2006 10:46 pm

320i tourings have a 4.27 diff, not a 4.10. The 320i saloon had a 4.10 diff after '87, before that they had a 3.91.

Fitting the 320i touring diff to a 318iS will in theory make it accelerate a bit quicker but rev higher at speed, if you can notice the difference as the ratios are pretty close.

I would say with the 4.27 diff the iS will rev maybe 100-200rpms higher than at the same speed with a 4.10 diff.
James
'91 325i Sport
'93 318i touring 16v