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calling engine guru's 120-130

posted by  Bennie on  Fri Mar 19 07:18 CST 2004
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last visit: Wed Nov 28 03:03 CST 2007
[RELATED]

"Recession on inlet seats would be caused by weak springs allowing valve to hammer seat" Yes, I would agree on that.

My theory is that because of play on the valve guide, everytime the valve closes, it closes in a slightly different way, thereby enhancing wear on the seat. Because of this wear the spring tension decreases enhancing the wear even more, sort of exponentially increasing the wear. (The valve guides on the worn out seats had a lot more play then the not-worn ones)

"to me it would be the obvious part of porting exhaust" to me also. And I was interested in replies on this aswell.

So: ENGINE GURU'S WHERE ARE THOU??
--
Daily driver: P130, '65, B18+M47. In the proces of restoring: P131, '69, B20+AW71L. (www.knutselsmurf.web1000.com)






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