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B20b cam change 140-160 1969

uid 32173's pic
posted by  Gary L on  Tue Aug 27 13:41 CST 2013
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last visit: Wed Oct 22 10:26 CST 2014
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"What i meant was that I will close the gap in increments. .30 to start and if OK will drop to .25. How about the valve closing fully issue?

Gotta ask... why are you wanting so much valve clearance? The '75 240 B20F factory manual says .016" to .018" on both exhaust & intake, and this applied to both D and K camshafts. With the D cam, I run .013" exhaust .018" intake on my B20E (pure stock valve train) in the race car, with no ill effects. Since we run the engine to 6800 rpm regularly, I do keep a close eye on clearances.

Dave - I recollect the '75 cars with manual transmission were supposed to have the D cam and the automatics had the K cam. Or vice-versa????
--

Gary L - 142E ITB race car, 73 1800ES
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