seth29 Posted January 23, 2013 Report Share Posted January 23, 2013 Hi Have started the rebuild of a 1964 BSA B40 and have 2 questions 1st the bike has a high level front pipe from s/miller but needs a new rear part of the exhaust, has anyone had the silverback exhaust of e bay http://www.ebay.co.u...=item27cdc599c6 or do you have any other surggestions. Having spent a small fortune on the engine up to now and still not running would like some help with engine oil, what is the best full sinthetic you can use in the old thumper, eg 20/50 full or part sinthetic. thanks simon Quote Link to comment Share on other sites More sharing options...
b40rt Posted January 23, 2013 Report Share Posted January 23, 2013 Probably better to use non synthetic till engine bedded in. Quote Link to comment Share on other sites More sharing options...
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