Wet Sump Symptoms

Stu,

I will not be going to Yungaburra this weekend, will be in Sydney having my three monthly spanking in the simulator.

Stuart SS said:

Final comment from Les Emery's Norvil shop web site ;=

http://www.norvilmotorcycle.co.uk/

WARNING - DO NOT FIT ANTI DRAIN VALVES INTO FEED PIPES - IF YOU USE THE CORRECT OIL (MONOGRADE SAE 50 - NOT 20/50) AND ALWAYS LEAVE YOUR BIKE ON COMPRESSION, IT SHOULD TAKE 9-10 MONTHS TO EMPTY YOUR OIL TANK (5-6 MONTHS SINGLES). IF IT IS LESS, FIX THE PROBLEM - DON’T ADD TO IT! - RING LES ON THE TECHNICAL LINE !!

Page last updated 12/07/11

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I have tested two types of anti wet sump valves: RGM valve (closed alloy body) and CNW valve (alloy with see-through part in the middle). Compared to using none the RGM type valve effected an oil pressure drop of approximately 10% throughout the rev range where the CNW valve caused oil pressure loss close to nothing, hhmmm??
When I took both valves apart I found out the RGM type valve has a reasonably tight spring to press a steel ball on its seat preventing oil from entering where the CNW valve has a synthetic ball hold by a less tight spring. No need to say which type valve I fitted to my Norton, so far I did over 15.000 satisfactory miles and yes I do have an oil pressure gauge next to the rev counter.
Btw guys who recommend me to use monograde SEA 50 and disapprove (half/synthetic) multigrade oil I certainly won't ring for advice on his technical line