arthursal

Thanks Woody,will try removing tail exhaust and giving it a burn out,think i will keep the bully engine in as you advised,will also look at the amal carb as other person said to do. What i ment was the crank journal wore out,it was not properly case hardened to the correct depth also it was made on a centre less lath with no hole going through the centre, the hole helps with the case hardening,so my brother made one to the original sizes and had it hardened where he worked as a tool maker. Thanks for all the help you have given... Arthur Mead (Swindon)

Hi folks,i'm new to this forum,i have a 1973 sherpa 250,i also have a BSA B25 in bits,what i need to know is can i swap the bultaco engine for a B25 engine.I rebuilt the sherpa engine twice first time fitted a Sammy Miller crank rebuild kit,this lasted 773 miles,then got my brother to machine an exact replica heat treated properly. Low down engine speed is fine but on the road the engine seems to 4 stroke i have the original exhaust pipe (fisrt long & second triangluar)fitted,or is there a way to make the sherpa run smoothly???. Any help will be appreciated. Yours ARTY