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R69S pistons
R69S pistons
Looks like someone at one time put incorrect plug in?
- schrader7032
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Re: R69s pistons
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
- schrader7032
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Re: R69S pistons
Those marks suggest that there was lack of lubrication. But I don't have much experience with this type of thing.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
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Re: R69S pistons
Scottie's Workshop, 3282 E Hwy 4, Murphys CA
Full Service Workshop for vintage and classic BMW Motorcycles http://blog.scottiesharpe.com
Re: R69S pistons
We’ll see what the other side looks like.
Rt side heads stuck on (That side had decent compression). Bikes supposedly been sitting forever. Over the next few days I’ll hit it with some penetrating fluid & try again
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Re: R69S pistons
- jwonder
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Re: R69S pistons
Jim, take the head bolts off the head and heat it to 200 degrees with a torch. Let it cool. Heat it again and it should come off. If you are going to use a plastic/rubber hammer, do not tap on the fins, you will bend them! If I have a stubborn one, I heat it 2 or 3 times and let it cool, then heat it again and put the head bolts into the heads (do not screw them in) and tap on the them for leverage. I tap, not beat it to death. Heating and cooling works because of the dissimilar metals and the aluminum heads expanding more than the cast iron! Gotta love physics!!!!jimkav wrote: ↑Wed Nov 16, 2022 8:45 pmFrom the looks of the piston bet it was slapping back and forth in the cylinder.
We’ll see what the other side looks like.
Rt side heads stuck on (That side had decent compression). Bikes supposedly been sitting forever. Over the next few days I’ll hit it with some penetrating fluid & try again
Vice President, Vintage BMW Motorcycle Owners
2022 BMW Friend Of the Marque
Long Island, New York
Re: R69S pistons
Thanks