SOHC.co.uk Forums > CB350/400
Hairline crack in engine lower casing at front left engine mount
Bryanj:
If you can get a dremel in there V out the crack a bit to give the epoxy a better key plus use brake cleaner to clean. Iyts all worth a try instead of a rebuild especially as you have been living with it for years!
awrawr:
Mine has a weld repair. Its held since 1980. Do you think I can stop worrying about it yet? [ Guests cannot view attachments ]
mike the bike:
Yup. Same thing on mine. I bit the bullet and got it welded. You only need to remove the bottom casing so it's not such a big job.
Erwin83:
Quite impressed with the Quiksteel stuff. After mixing the 2 components, there's only 2 minutes before you feel it getting rigid, so there isn't a lot of time to apply it. That makes it a bit harder to get a visibly appealing job done, especially in the tight cravesses around the cooling ribs.
Nevertheless, I think I got it right.
Oh, and before starting to mix the material, of course extensively degreased (and I pulled part of the oil out and the bike with its nose up so there wasn't any new oil coming through). And I rubbed the surface with a hard metal wire brush, so the epoxy had a nice rough and paint-free surface to glue to.
I ended up completely encapsulating the nut of the engine mount bolt, as it was impossible to get a layer of material behind or next to the nut, while maintaining enough space for the nut to be removeable.
Not the prettiest of repairs, but happy if my oil drip is finally solved now for 20 euro's (and half the Quicksteel tube still on stock).
Fingers crossed that my garage floor will remain dry now.
mike the bike:
Just remember to put the shorter bolt in that side and don't forget the spring washer or you'll be doing the job again.
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