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5 speed trans shimming

Posted: Mon Jan 19, 2026 6:12 pm
by 515moto
Hi all,
Following much written and video instructions I carefully and I think correctly determined end play gap and therefore the needed shimming. To get to .005" (my target) I need what seems like a lot of shimming! 42, 53 and 56 thousandths are needed. So, for those who have done this, is this a lot? I did have to replace the cover with one sourced from ebay so it is not the original cover. Hmm. Thoughts anyone?

Re: 5 speed trans shimming

Posted: Tue Jan 20, 2026 5:46 am
by Rob Frankham
It does seen quite high but, if that's what it takes, then thats what you need to use. If you're completely satisfied with your measurements than go for it, but I would be inclined to do the math again just to check. That being said, if the shims are too thick, the gearbox will be tight once the cover bolts have been tightened down. If this turns out to be the case, then you need to re-visit the whole procedure.

Rob

Re: 5 speed trans shimming

Posted: Wed Jan 21, 2026 7:19 pm
by 515moto
Thanks Rob. The measurements were careful and the math was done 2 different ways twice with the same final result each time. I guess I need to source a few more plus-size shims. My collection will not do the job!

Re: 5 speed trans shimming

Posted: Wed Jan 21, 2026 9:13 pm
by gspd
FWIW. I aim for zero clearance without the gasket.

Re: 5 speed trans shimming

Posted: Sun Jan 25, 2026 1:14 pm
by 515moto
Hi. I measured with the gasket in place.