Posted by wisbaker on September 10, 2012 at 20:56:02 from (207.118.158.205):
In Reply to: compression ratio posted by Brian101MH on September 10, 2012 at 18:46:28:
It's a flathead, valve in block or L head, high compression is not what they're famous for because you have all that additional area over the valves, shave to much off the head and you don't have room for the valves to open or the fuel to flow in and exhaust out. I'm guessing you have a Massey Harris I'm thinking Continental engine. I've seen propane forklifts with six cylinder Continental engines they might have pistons and heads that will help you on the compression if they were built as a propane engines or you might see what the car applications were using for compression (Checker and Kaiser) come to mind. I don't think you'll have compression/RPM issues, heck in the 60's some street cars were running 13.9:1 and they still behaved at lower RPMs, heck my old Pontiac had the high compression and it only ran about 2200 rpms at 70MPH.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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