Quote:
Originally Posted by THEFERMANATOR
The micro bubbling is more an issue with diesels due to the higher cylinder pressures, but it is present in gas engines as well. Do a search on INTERNATIONAL 7.3's(not the powerstroke, but the IDI version), and you will find plenty of problems with cavitation and cylinder erosion due to the micro bubbling and it's effects. As pressure increases, the effects are normally worsened. Outboards already use automotive grade gaskets or better. Most automotive engines rarely see more than 16-18 PSI whereas in an outboard that is common pressures, and 20-25 can be seen. I understand your thinking, but your over thinking it. I know many think they can build a better mouse trap, but i nthe end the tried and proven design normally wins out. This is one of those situations.
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Not looking to build a better mousetrap, just wondering if one has already been built but they want to sell us new impellers instead.
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1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer
1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer
1996 V21 w/1993 200HP Mercury on a Shoreline Trailer
All towed by a 5.7L Hemi Durango.
If God didn't have a purpose for us we wouldn't be here, so
Live simply, Love generously, Care deeply, Speak kindly.
(Leave the rest to God) 
Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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