SOHC.co.uk Forums > CB350/400

Liquid Packing?

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DayvW:
In various places in the manual (76 400-f) it mentions using liquid packing on mating surfaces (eg. the crank cases where there is no gasket).  Previously someone has used some red stuff that has gone brittle and I find bits all over the place (some in the sump).  Wanting to avoid this again, what recommendations can anyone make? And when I install new gaskets (with clean faces) would you recommend using it (or other stuff) with gaskets - or just stick to using it just where the manual recommends? Thanks.

Trigger:
I use RTV sealant, but you must smear it on. A thin coat. People put loads on and the access just goes to wast in your oil pump. For gaskets i use Hylomar spray, same again THIN COAT.

DayvW:
Thanks - so something like this: "V-tech Clear RTV Silicone Gasket Sealant 250C (85gm) - Water Resistant Sealant"?  Any reason why a spray rather than a tube - to aid putting a thin layer on?

Trigger:
250c is a bit low. Look for a higher temperature RTV that is oil resistant/ transmission fluid resistant . The spray is spot on but, a bit tricky when applying to crankcases.   

Clem2112:
Use Yamabond or the equivalent case sealant,  sparingly..... grey and quite runny usually.
Goes on crankcase mating faces around edges and on main bearing joint faces.

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