Does anyone know what causes oil accumulates in primary on 58 Panhead to the point where it comes out of drain in a stream.
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Originally posted by NickR View PostDoes anyone know what causes oil accumulates in primary on 58 Panhead to the point where it comes out of drain in a stream.
If the machine sits idle long enough, oil from the tank slowly seeps past the ball check in the pump, filling up the cases until it overflows past the sprocket shaft 'slinger' into the primary.
When you stand the machine upright, the puddle drools out.
The best way to avoid the mess is to drain the oil into a jug if the machine won't see duty for many weeks, and pour it back in when it does.
.....CottenAMCA #776
Dumpster Diver's Motto: Seek,... and Ye Shall Find!
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Check ball seats need to be burnished. There are several sources for burnishing tools. They are often on eBay. Lapping with valve grinding compound does more damage than good.Be sure to visit;
http://www.vintageamericanmotorcycles.com/main.php
Be sure to register at the site so you can see large images.
Also be sure to visit http://www.caimag.com/forum/
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Originally posted by Chris Haynes View PostCheck ball seats need to be burnished. There are several sources for burnishing tools. They are often on eBay. Lapping with valve grinding compound does more damage than good.
I pioneered the check seat burnisher idea, and disavowed the technique soon after.
Please type burnisher into the search function, and please heed my warnings.
Using bubbles to actually observe seepage past the ball, only a flat-cut to remove the worn seat produced the best seal; Any further treatment, such as an angle grind, lapping, burnishing, or abuse with a drift then only increased leakage.
Bubbles don't lie.
.....CottenLast edited by T. Cotten; 05-07-2021, 10:52 AM.AMCA #776
Dumpster Diver's Motto: Seek,... and Ye Shall Find!
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Originally posted by T. Cotten View Post
Here we go again, Folks!
I pioneered the check seat burnisher idea, and disavowed the technique soon after.
Please type burnisher into the search function, and please heed my warnings.
Using bubbles to actually observe seepage past the ball, only a flat-cut to remove the worn seat produced the best seal; Any further treatment, such as an angle grind, lapping, burnishing, or abuse with a drift then only increased leakage.
Bubbles don't lie.
.....CottenBe sure to visit;
http://www.vintageamericanmotorcycles.com/main.php
Be sure to register at the site so you can see large images.
Also be sure to visit http://www.caimag.com/forum/
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Originally posted by Chris Haynes View Post
Does this mean I get a refund on the burnishing tools that you sold me? :-)
I disavowed them not because they didn't occasionally improve things, often they did; It was because occasionally they broke things.'
A simple flat-grind is safer, more effective, and probably cheaper too.
....CottenAMCA #776
Dumpster Diver's Motto: Seek,... and Ye Shall Find!
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