OK or Junk?

Peter J

Peter J

Well-known member
I tore down my spare A engine and found it has been sleeved down to standard and valve seats installed. What I also found were three hairline cracks from the #2 and 3 exaust valves to the pistons. Also a small crack from the #3 exaust port to the valve chamber. My question is has the sleeves effectively repaired the cracks on the deck? How about the crack from the exaust to the valve chamber? Too small to take a pic of any of them. Babbitt looks great etc. Hopefully it's still serviceable.
Comments please?
Thanks,
Pete
 
Peter J said:
I tore down my spare A engine and found it has been sleeved down to standard and valve seats installed. What I also found were three hairline cracks from the #2 and 3 exaust valves to the pistons. Also a small crack from the #3 exaust port to the valve chamber. My question is has the sleeves effectively repaired the cracks on the deck? How about the crack from the exaust to the valve chamber? Too small to take a pic of any of them. Babbitt looks great etc. Hopefully it's still serviceable.
Comments please?
Thanks,
Pete
Click to expand...

No it is not fixed right. It should have been pinned before the sleeves and seats. You over lap the pins, then the sleeve, and seat seats go into the pins.
 
For all I know, it could have been pinned then sleeved and inserted. Pretty obvious that the crack was not pinned (if I know what I'm looking at) but it's shallow e.g. not into the exaust port itself.
Pete
 
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