Some engine rebuilders remove the relief valve seat as part of their
regular cleaning routine. A picture of the removed seat is here;
http://www.spriteparts.com.au/images/engine%20pressure%20relief%20seat%20removed.jpg
I brought this up because the seat could have moved or wasn't fully
inserted into the relief bore. it's easy to image how this would upset
the spring calibration, but I don't know what other implications it
could have. Just another avenue to explore.
John
Fogelsville, PA
Wm. Severin Thompson wrote:
>Nothing looks out of the ordinary in the recess. A anumber of plungers and
>springs were tried.
>
>We'll not know about cam bearing issues until I tear it down.
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