Quote:
Originally Posted by Randyjim
Good evening readers!
I've been out this afternoon to do the routine maintenance checks, and had to top up the coolant a little. The o-ring at the bottom of the banana pipe is the source of the leak and not for the first time.
I thought I was doing well with the viton O-ring and molykote 111 combo, they seem to have lasted about 9 months this time, but no such luck.
When I first changed the thermostat (failed open, but not leaking), I found a significant scored mark on the side of the bore on the block which I rubbed back as best as I could, but I'm worried it's left enough damage to be causing repeat failures.
Can anybody offer any advice on repairing the bore, or should I just fill it with silicone sealant if I can be bothered to repair it again.
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Try tidying up the scored mark a bit more with fine abrasive.
The o-ring has a certain amount of squeeze built into it so a certain amount of wear is tolerable to an extent.