Reversion
Theres talks on the interwebs that cams with more than 230 degrees of duration can have 'reversion' issues and theres danger of sucking in water. (Boat apps) This sounds like a load of bs to me, what do you guys think?
First of all, duration AND lobe sep angle come in the play with overlap. So a cam with a 110 lsa and 232 degrees of duration would have about as much overlap as a 114 lsa 236 degree cam. So a static rule like that is retarded. Secondly, for the exhaust to suck in water, that tiny little bit of overlap is going to have to overpower the other 3 cylinders in order to actually suck air in all the way from the collector. Sound theoretical at best and realistically impossible to me. Thoughts? |
My dad was running a Comp 292 which has 244 at .050 and a 110 lsa and never had an issue.
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Yep. He was using the Gleenwood exhaust logs pictured below.
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Cool, thanks guys, if Rons dad can get away with a 244 110lsa, I should be good with a 242 110lsa.
And if youve heard of race motors squeaking by Ron Im not terribly worried. Im not interested in asking comp, they either wont know or theyll tend to cover their ass. Warranty of fitness for a particular purpose kinda deal, know what Im sayin son? |
Prob be a good idea to move water outlet past any u bends in the exhaust too.
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Oops, meant to say, "squeaking by Guy."
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