Pistons- All Models

January, 1975 As of October, 1974 individually graded pistons were no longor supplied by our Parts Department for Triumph engines. The new standard grade pistons will be supplied in a 0.001 oversize condition.

As a result of this change, it is now necessary when fitting the standard grade piston to a cylinder block in service, to offer the new piston to the bore and carefully check for correct piston to bore clearance as appropiate to the piston type supplied, honing the cylinder bore as necessary in order to obtain the correct clearance.