Quote:
Originally Posted by Ben
Looking at putting 3.9s into my manual 01 xr8.
Obviously not something that I will do myself. Will go to a specialized shop on the GC looking at Nerang Diffs. But curious what causes some Diffs to become noisy after changing gearing.
Unsure where I will get the gears from but am hoping Mal Wood still offers something that would suit.
Besides finding the correct speedo gear what else will I need to have the job done or anything else that should be sorted while its opened up.
Cheers.
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Genuine Dana spicers gears can be obtained in 3.91 they are actually a m75 gear set that are supplied with a spacer to fit the m78 housing. Probably around $500 mark for gears.
Noisy diffs generally comes from re-using gear sets after a wear pattern is formed, it’s hard to replicate it. I had no noise in my 3.91 true trac and still don’t after some km.
No speedo gear available for the 3.92 gear set; will need a 4 pin 12v speedo corrector that interrupts the VSS signal to cluster yet supplies the unmodified signal to the EECV.