Veloce oil/water emulsion

Discuss the new Corsaro and Avio 1200s

Re: Veloce oil/water emulsion

Postby fredlabulle » 16 Apr 2018 19:11

Ming wrote:I think Fred means that the right hand crankcase (carter) shows a screw hole on the design drawings which would improve the sealing. The joint has a hole in the appropriate position, but there is no screw. Does that help? Confused me a bit...

That s right , i try to post a photography
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Re: Veloce oil/water emulsion

Postby backfat1187 » 24 May 2018 22:16

I see what you mean. The hole (or lack of hole) appears to be in line with a screw holding the water pump cover on.

Leakdown test didn't indicate anything obvious. Leakage the same on both cylinders (about 30%). You can hear it getting past the rings.
So I reckon there are a few scenarios...

-Neither head gasket has gone and the leakage is just the piston rings.
-Both have gone and the leakage is rings and gaskets combined.
-One gasket has gone, the leakage of which combined with ring leakage matches the other cylinder ring only leakage.

The second two scenarios seem unlikely to me and given there was no pressurization of the cooling circuit and the bike started easily, I reckon the head gaskets are fine and the most likely culprit is the water pump shaft seal. Possibly as a result of shaft deviation. I shall replace the seal and see how we go.

Can't believe the bike has been sitting there on the lift while we've had all this fab weather!
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