Sorry to hijack but I want to be clear since I'll be in the cam chest this winter.

The tabbed thrust washer goes up against the bearing, if a shim is needed does it go inbetween the thrust washer and the cam or on the end with the gear and bushing??

Thanks

Ds

 

You need the washer with the ears against the bearing. The ears keep it from spinning and wearing the cases down. any additional shims go between the tabbed washer and the cam.
John

 

Mine didn't have a tabbed washer, either, just a large plain washer. I'm still confused. It's been that way for 80,000 miles to the best of my knowledge.

 

I don't have the "tab" washer in mine, either, just a large plain washer. From what I'm gathering by this discussion, '88 and up OEM cams are longer and may not need an additional shim. Aftermarket cams are made to fit all years of Evos,and thus, are shorter and may require shimming in later Evo cases. Is that correct?

 

Yes....and I have never seen a tabbed cam shim in an Evo but then I haven't pulled a pre-88 Evo Big Twin apart recently.

 

Sometime around 1992-93 the tabbed shim was dropped according to the parts books.

 

My 94 had the tabbed washer but the putz who last worked in the cam chest ground off the tabs saying they made noise...I've only once let someone other than me work on my bikes and I'm regretting it two years later....My dealer said the tabbed ones were no longer available and to just use the round one...but that's a dealer

I have a new tabbed washer and am figuring out my cam options with an eye towards doing the job late this season, depends on some knee surgery..

Ds

 

That odd because the 94 exploded diagrams show the round washer...I don't think it makes any difference, most shims are free to rotate,

 

Mine was round and to answer Dougs question, I put it back where it came from -against the bearing- and put the shim between the washer and cam. When your in there it makes much more sense to do it this way.