I'm gonna be buying some OEM bearings from Len sometime soon
i just want to know since that i am swapping rods will the size of the bearings change cause the rods changed

 

Yes,

You will have to measure the inner diameter of the rods big-end so you can size your bearings accordingly.

-Brandon

 

once measured, how do i know which OEM bearing to use?

 

This might be useful info : https://honda-tech.com/zerothread?id=715490

 

Yup, just the post to refer to. I would recommend ONLY honda rod and main beaings, as you can get exactly the tolerance you want! Sure, other bearings cost less, but you don't see the V8 guys resizing thier rods and mains to fit those, now do you? (ie. Eagle and many other manufactures fit V8 rods and cranks to fit Honda bearings).

 

nothing beats OEM stuff (Bearings, seals, gaskets, blah blah)