My first panhead

[dukekleman]

IMG_20251124_162219715.jpgBob inside cam bushing and area around it look okay.

As Bob stated, no cracks around the crankcase cam bearing boss area is a very good sign.
The inner cam bearing bushing thrust face shows definite signs of wear.
With that being said, the I.D should be measured X &Y and compared to the camshaft you'll use in the build. It is likely the tolerances are out of specification.

Duke Kleman

[echambers]

Yes plans are to replace both cam bushings and pinion bushing. have read that line reaming is needed have also read that it's not. What's the opinion here?

[dukekleman]

Ed,

The only way to insure that things are correct and held parallel are to line ream them.
This way the components being used with one another are correctly matched in the end, which is what matters.

Special fixtures can be produced based off OEM Engineering prints or very precise coordinate measuring equipment used to measure known good factory components.
Either way it is expensive and time consuming to create.

This leaves line reaming the most cost effective and efficient way to insure alignment and final fitment in my opinion.

Hope this helps,

Duke Kleman