S5 Oversized Stat Gear Bearings?

[JustJeff]

Originally Posted by RETed

FC stat gears bearings only come in two sizes from Mazda - standard and oversized.
Oversized is for those who have a "clearanced" eccentric shaft due to machining in case of warpage / damage.
Unless you have the tools to "mic" the eccentric shaft - v-blocks, run-out gauge, calipers, etc. - just get the standard bearings.
Most people should just get the standard bearing.

Mazda went one step further with the FD stat gear bearings - that's why there are several (+ and -) to account for variations in production tolerances and for slight clearancing machining.
(I think it's something like one or two undersized, one standard, and the rest are oversized.)
I guess they thought clearances on the stat gears was that much more critical on the 13B-REW engines...


-Ted

I figured I'd need standard, I was just curious what oversized was and your answer is about what I expected. Thanks for the confirmation.

Originally Posted by RETed

We got a Mazda parts tech in the house?
j9df3s still around?


-Ted

I was actually expecting j9df3s to be the first to answer