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Old 11-03-2011
dabnis dabnis is offline
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I have nrver owned one but have read they are pretty reliable in stock form, possibly because they are not stressed very hard? Do you want to swing a bigger prop or get more revs? From what I remember, flat heads used to be subject to heat issues, burnt valves and seats, high head temps, and pinging, not something you want in a continous heavy load situation. If you do it let us know how it worked out.

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