SOHC.co.uk Forums > CB350/400

Yoshimura rings

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Dave_Canada:
Denoon (in Canada) has 54mm rings, I don't know if they fit the Yosh pistons though. You could ask him...
http://www.denoonsp.com/omt-catalogue.htm

ka-ja:
HiDave,
            Thanks-I have sent of a query, but reading between the lines, he has partially backed out of the parts supply business and concentrating on information supply, the listing for the yossy rings is dated 1983? from a different company, now defunct.
            I have also tried IMD in the UK, but they haven't any 54mm rings, but may have some later in the year ( apparently a popular "dirt bike" size)----Ken

Dave_Canada:
MC-Again in Japan have also been selling kits but they now have their own brand but I don't see 458. They used to have Yosh kits and parts, I bought a couple of head gaskets that came in Yoshimura packaging (probably fake but still good gaskets).

ka-ja:
Hi Dave,
             It would appear that I can forget yoshi rings although I would prefer to use the pistons I have because of the 10.5 to 1 compression ratio, most other big bore kits are 9.5 to 1 or lower, below is the original yoshy parts list from 1983/4, I can get hold of non yoshy 466cc rings from America, but although they can be "gapped" to fit, there is no guarantee they are the correct thickness or depth until I buy them and see. I may well have to buy the alternative forseti pistons and hone the bore out to 54.5dia---Ken
             PS. Rick in Canada is a very helpful fella!

           
1223 458cc PISTON KIT with head gasket, no resleeving necessary
1224 466cc PISTON KIT with head gasket, no resleeving necessary
1273 Piston, 458cc, 54mm, 10.5:1
1274 Piston, 466cc, 54.5mm, 10.5:1
1313 Piston Rings, 458cc, 54mm
1314 Piston Rings, 466cc, 54.5mm
1343 Wrist Pin, 458cc & 466cc
1362 Circlip
1386 Head Gasket

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