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01-08-2010, 11:12 AM
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#1 |
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Not Yet Wild
Join Date: Jul 2009
Posts: 3
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frustrating flathead
I have just rebuilt a kf-82 flathead engine and it seems to have to much compression for the starter to start it. After it finally does start and runs for while it starts ok. Do they make a compression release for this engine?
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01-08-2010, 11:46 AM
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#2 |
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Gone Crazy
 Join Date: Jan 2007
Location: Chesterfield, Va
Posts: 6,021
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Re: frustrating flathead
I'm not sure if there is a compression release on this motor, Did you notice one on the cam when you did the rebuild?
Have you done a compression test? That will tell you what direction you need to head to find the cause. Might be a weak starter/generator. |
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01-08-2010, 01:19 PM
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#3 |
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Not Yet Wild
Join Date: Jul 2009
Posts: 3
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Re: frustrating flathead
Haven't checked the compression. The camshaft didn't have any indication of a compression release on it. I am using a starter off of an older harley cart, everything looked the same except the pulley, it was larger than the original one. it slips the belt until it turns over one stroke, then it either bogs the starter or slips the belt again. I will change the pulley and try again.
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01-08-2010, 03:29 PM
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#4 |
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Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,406
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Re: frustrating flathead
THis si obviously a starter problem. We shaved the head on one of these motors to increase compression after a rebuild and the old starter worked just fine..... Find and OEM starter
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01-08-2010, 03:43 PM
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#5 |
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Gone Wild
Join Date: Jul 2008
Location: Reddick IL
Posts: 11,220
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Re: frustrating flathead
it was larger than the original one.
You are on the right track. |
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01-09-2010, 08:24 AM
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#6 | |
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Gone Crazy
Join Date: Jan 2007
Location: Chesterfield, Va
Posts: 6,021
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Re: frustrating flathead
Quote:
Also regardless of any other change, the belt should not slip. check the belt condition and make sure it is not riding in the bottom of either pulley and it is tight. Applied torque is from the sides of FHP belts not the bottom. |
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