Crancase breathing modifications for
This engine has extreme crancase presure problems that these mods will help but not totaly solve.
BSA & Triumph & CCM B50 Based engines
Put a one-way valve on the breather hose.
Try Ford one/way valve. Part #E8TE-9A487-AA.
This will put a partial vacuum in the crankcase insted of preasure and free up the engine as well as helping on oil leaks.
Install the valve as far from the engine as it will fit.
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© Rickard Nebrér