Crankcase drain

[gribley]

My 360 Challenger came with 2 engines (but only one gearbox).
The engine in the frame GPB1 290 has the drain plug at about the 7-o-clock position on the side wall of the crankcase, just in front of the gearbox lug behind the magneto.
The spare engine, GPB1 174 has the drain plug where I would expect it, in the clutch side vertically at the 6-o-clock position lining up with the groove on the inside of the cases.
Is there a good reason for the plug being relocated?

[dave higgins]

Hi gribley, not familiar with the positioning of the plug, but once removed, crankcase pressure will push out any excess oil etc, either at 6 or 7 oclock, but best to do it at lunch time......
Have you thought about becoming a full member...then you can join the bun fight next door....plus other benifits...dave...

[gribley]

Am I not a full member? I did pay to join GRA

[dave higgins]

Very sorry gribley, but that was only the deposit......, no rob the gaffer is out of the country right now & my guess is, he`ll upgrade your status to full, when he returns....or something like that....welcome aboard mate...dave.

[gribley]

I think I have worked it out. The vertical drain plug would be inacessible due to the low level expansion chamber. I guess Greeves worked this out somewhere between engines 174 and 290

[Rob]

Yes, welcome to the GRA! I have upgraded you to 'GRA Member' before Mr Higgins gets you to pay twice!

(Well done Dave, if it wasn't for you, I wouldn't have known!)