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High Compression Head, I think Not
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Enough carbon deposits to bump it up to 4.3? I wonder why Model A people think 6.0 is high compression? My lawn mower is 7.5:1.Mechanical engineering 101: If you put an adjustment knob, screw, bolt, or tolerance specs on something, some people will immediately fiddle with it. If you mark it DO NOT TOUCH everyone will mess with it.
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The compression was so high it push backward on the water pump impellor shaft and wore deep into the web in the head.
Oh wait, original 4.2 heads did that all the time......and we all use a collar to stop that now. OK, I give, it is hi-comp because he says so
LOL good find, Tom, so when are you gonna install it?
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Originally posted by tbirdtbird View PostThe compression was so high it push backward on the water pump impellor shaft and wore deep into the web in the head.
Oh wait, original 4.2 heads did that all the time......and we all use a collar to stop that now. OK, I give, it is hi-comp because he says so
LOL good find, Tom, so when are you gonna install it?
Time to make another trip to Bert's to check out his new location.
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