I have a second R69s engine. I have had it on the shelf for over 20 years and I recently had an opportunity to throw it into a frame and give it a run.
I had a set of new barrels and pistons to lob onto the engine - which I did.
The engine, if one is deaf, runs beautifully. Starts first kick, pulls nice and strong and is quite smooth running.
But alas, it has the dreaded knock.
Here is a sound file for your ears.
Well now I have to shake a leg and start rebuilding that spare crank I have sitting on the shelf.
Mal
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The dreaded Big End Knock at your door
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schrader7032
- Posts: 9054
- Joined: Fri Oct 27, 2006 3:00 am
- Location: San Antonio, TX
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Re: The dreaded Big End Knock at your door
I guess I don't my BMW sounds. I don't think I would have noticed anything wrong. 
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.