Thought I detonated a piston-guess not-pics...
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Outstanding HDF Member
Joined: Mar 2010
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From: SoCal hi desert
Thought I detonated a piston-guess not-pics...
It looked like it was detonated looking at it with a borescope but it's just crud built up on top-it's really thick by the exhaust port. Curious about the clean spot on the intake side...any ideas?
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Joined: Mar 2009
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From: Niles Canyon Ca.
Not bad for an older cali bike running this crap they call gas out here . Clean the heads up , dump a little gas into the ports and see how the valves /seats seal and check closely for cracks around the plug hole area . Take in the exhaust port and see if you can get a look at the valve stem too those can gall up a bit with our gas . Oh yeah replace the 2 alignment dowel bushings on the cylinders if you can , minimum get a dremel and wheel and clean them up .
Last edited by TwiZted Biker; Jun 28, 2013 at 07:27 AM.
Thread Starter
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Outstanding HDF Member
Joined: Mar 2010
Posts: 2,965
Likes: 384
From: SoCal hi desert
Not bad for an older cali bike running this crap they call gas out here . Clean the heads up , dump a little gas into the ports and see how the valves /seats seal and check closely for cracks around the plug hole area . Take in the exhaust port and see if you can get a look at the valve stem too those can gall up a bit with our gas . Oh yeah replace the 2 alignment dowel bushings on the cylinders if you can , minimum get a dremel and wheel and clean them up .
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