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Re: M20 oil pressure relief ball valve question

Neil Clarke
Hello Mark

I'm not normally completely rubbish on the IT front, but how the heck did you upload a picture? Id like to that but after much faffing about i cant seem to find the method?

Cheers
Neil
Hi Neil,

I have just added a short instruction on how to ad photos to posts on the forum. The instruction is on top of the list of threads and it will stay on that location, so it should be easy to find it.

Regards,
Bastiaan

email (option): wdmotorcycles@gmail.com

Re: M20 oil pressure relief ball valve question

Hello All Again

hopefully this maybe the defining post to ask if this looks normal?

I think i have been looking at the wrong orifice mi'lord. I was looking at this in pic below which is different in appearance to that posted by Mark

PRV

This is the hole uncovered by the screw underneath the hex nut in pic below but I believe I should be undoing the hex nut itself as in the pic below. Its been a long week :face_with_rolling_eyes:

PXL-20220109-145848339

Incidentally, I dropped the oil tonight; barely 2 pints in the sump but whoops I haven't drained the tank yet so more to come?

Thanks to Bastiaan for the phot upload instructions.

Cheers Neil

email (option): nlhclarke@gmail.com

Re: M20 oil pressure relief ball valve question

That screw is the blanking plug for the long deleted oil tell tale. Yes it's the hex plug above that has the ball and spring. Ron

email (option): ronpier@talk21.com

Re: M20 oil pressure relief ball valve question

Also, the M20 engine is a 'dry sump' engine so under normal circumstances there should only be a minimal amount of oil in the sump (crank case), with most retained in the oil tank...
The 2 pints you drained from the engine is what has slowly leaked from the oil tank, through the oil pump and past the anti drain valve to the sump while the bike has been standing unused...
That's what people are referring to when they say an engine has 'wet sumped'....Ian

email (option): ian@wright52.plus.com

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