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What is the seal which fits over the little spigot in the oil feed between the case and the oute, made from ? I think it is supposed to be a tapered seal - mine is a neoprene O-ring. - Can the additives in the oil stuff it ? I just use a multigrade 50 oil in my 850 motor. I can't remember what the 20 means in 20/50 Multigrade. Four-stroke motors get very hot, especially when run on petrol. I sometimes wonder about oil pressure in my 850 engine. When I had Triumphs, I had so much oil pressure that, even after a long race I could not push the indicator button in. Commandos have gear pumps - not plunger. The Triumph crank used to wear like crazy, until I had the journals hard-chromed. I used MIni-Cooper copper-lead bearings. But it was consisrtently revved to 10,500 RPM. - Commandos don't go over 7000 RPM.
I don't know whether I believe in Castrol R - it turns your bike into an instant shit-heap. My mate used to wash his Manx with methanol after racing. I just did not use it after the first time.
My 850 runs on methanol so is probably a bit cooler - it still clicked as it cooled down after it had been raced

<blockquote data-quote="acotrel" data-source="post: 644052" data-attributes="member: 4295">What is the seal which fits over the little spigot in the oil feed between the case and the oute, made from ?&nbsp; I think it is supposed to be a tapered seal - mine is a neoprene O-ring. -&nbsp; Can the additives in the oil stuff it ? I just use a multigrade 50 oil in my 850 motor.&nbsp; I can&#039;t remember what the 20 means in 20/50 Multigrade.&nbsp; Four-stroke motors get very hot, especially when run on petrol.&nbsp; I sometimes wonder about oil pressure in my 850 engine.&nbsp; When I had Triumphs, I had so much oil pressure that, even after a long race I could not push the indicator button in.&nbsp; Commandos have gear pumps - not plunger.&nbsp; The Triumph crank used to wear like crazy, until I had the journals hard-chromed.&nbsp; I used MIni-Cooper copper-lead bearings. But it was consisrtently revved to 10,500 RPM. - Commandos don&#039;t go over 7000 RPM.&nbsp;I don&#039;t know whether I believe in Castrol R - it turns your bike into an instant shit-heap.&nbsp; My mate used to wash his Manx with methanol after racing.&nbsp; I just did not use it after the first time.My 850 runs on methanol so is probably a bit cooler - it still clicked as it cooled down after it had been raced</blockquote>

[QUOTE="acotrel, post: 644052, member: 4295"] What is the seal which fits over the little spigot in the oil feed between the case and the oute, made from ? I think it is supposed to be a tapered seal - mine is a neoprene O-ring. - Can the additives in the oil stuff it ? I just use a multigrade 50 oil in my 850 motor. I can't remember what the 20 means in 20/50 Multigrade. Four-stroke motors get very hot, especially when run on petrol. I sometimes wonder about oil pressure in my 850 engine. When I had Triumphs, I had so much oil pressure that, even after a long race I could not push the indicator button in. Commandos have gear pumps - not plunger. The Triumph crank used to wear like crazy, until I had the journals hard-chromed. I used MIni-Cooper copper-lead bearings. But it was consisrtently revved to 10,500 RPM. - Commandos don't go over 7000 RPM. I don't know whether I believe in Castrol R - it turns your bike into an instant shit-heap. My mate used to wash his Manx with methanol after racing. I just did not use it after the first time. My 850 runs on methanol so is probably a bit cooler - it still clicked as it cooled down after it had been raced [/QUOTE]

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