Just how oil-tight are the 750 twins?

Tippie said:
How long ago? Phil are you still following this forum of madness and sanity, and still supplying your excellent replacement parts?
Click to expand...
Don't think Phil's on here much, but I can confirm that he's still supplying his excellent gaskets. I got these from him, a couple of weeks ago, for my SF2.
Message me if you need contact details?

Phil's SF Gaskets and Seals no email.jpg
 
Last edited:
An old British trick is to dig out any old sealer down screw holes, bolt bottoms against old sealant, and the cover doesn't compress.
 
Vince said:
An old British trick is to dig out any old sealer down screw holes, bolt bottoms against old sealant, and the cover doesn't compress.
Click to expand...
When rebuilding, I chase all threads in cases and covers. Sometimes absolutely unbelievable how much crud has gathered, apparently some people apply sealant as if it were for free... :rolleyes:

piet
 
I also rave about Phil Todd's charcoal grey gaskets, I buy them in quantities and distribute them to local owners as and when needed, they are all of great quality and never heard any complaints. This is for triples, sorry not twins. But as Piet syas, if its not flat, good condition, and correctly installed, no gasket will solve it. I have noticed that oil seals seem to survive a remarkably long time if I bike gets stored and neglected, but every now and then.......
CLEM
 
sfcpiet said:
When rebuilding, I chase all threads in cases and covers. Sometimes absolutely unbelievable how much crud has gathered, apparently some people apply sealant as if it were for free... :rolleyes:

piet
Click to expand...
A recent motor I did had two of the clutch cover screw holes in the crankcase cracked out of the crankcase with the hole full of cured silicone. Just lovely.
 
I still have a few sets of Phil Todd's 750 gaskets from the 90s.
I used to go over a couple of times a year and whatever I needed for myself or French friends, I'd take a gasket set.
Paul
 
I'd love to fit a set of Phil's 'old greys' just to see if the oil leaks I'm seeing with the greenies disappear. oil leaks have just never been an issue in the past (and I don't overtighten cover bolts).
 
So, I gave the underside a good clean, but haven't had time to give it a run to check to see if I can work out where the weep might be coming from. However, what I did notice was just one drop of oil that had gathered at the lowest point on the underside of the exhaust pipe on the left-hand side.

750 GT Oil Weep.JPG
 
general_piffle said:
So, I gave the underside a good clean, but haven't had time to give it a run to check to see if I can work out where the weep might be coming from. However, what I did notice was just one drop of oil that had gathered at the lowest point on the underside of the exhaust pipe on the left-hand side.

View attachment 98581
Click to expand...
Well that's clean!
Are you sure that it's not the tensioner, usual culprit.
Paul
 
general_piffle said:
So, I gave the underside a good clean, but haven't had time to give it a run to check to see if I can work out where the weep might be coming from. However, what I did notice was just one drop of oil that had gathered at the lowest point on the underside of the exhaust pipe on the left-hand side.

View attachment 98581
Click to expand...
Looks a bit like the drop is running down from one of the bolts at the top of the engine cover straight down to the lower left bolt and maybe from there to the exhaust? just look at the mirror like surface of the engine cover and see the stripe... at least it shows on the pic...
 
Arrowed, Joel.
Holding the locknut, remove the capnut and copper washers.
Holding the adjuster with a screwdriver, undo the locknut and remove the final copper washer.
Heat the washers to cherry red, then quench them, I use waste oil.
Replace, as they were, and see if that's resolved the leak.

Joel's 750 GT Oil Weep.JPG
 
You must log in or register to reply here.
Back
Top