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Author Topic: M91 spray from inlet  (Read 1960 times)

  • Jr. Member
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  • Posts: 32
  • Airplane Nut. Interested in anything mechanical.
  • Location: Greece
Re: M91 spray from inlet
« Reply #15 on: January 06, 2025, 12:06:11 am »
Yes I did notice quality is not consistent. But then again, we get this magnificent jewel for this price that we
can actually afford. And with it comes the ability to improve on its flaws by speaking to fellow enthusiasts.

Compression has increased noticeably during run in, and with it the spray has decreased significantly. So the diagnosis was correct, but
I'll leave the head on for now. Can always do it later. Indeed I had gathered the normal lapping cream would be too rough.

My project for today is to fix the migrated pin where the cam follower bearing is on. It has moved inwards and now the exhaust pushrod
is sticky. I'm thinking getting the steel pin out of the brass part, clamp it in the vise to damage the end a bit, then drive it back
in with a bit of epoxy.

The springs, I'm on it. Scouring the house for some old equipment that might contain some....