At Harris Engines we can fully recondition your Harley heads, using the latest Serdi seat cutting technology we can remachine the valve seats to a multi angle seat which offers the best performance from your head. We can also match port the valve seat inserts to the ports, replace worn valve guides, repair damaged threads and remachine the head face with PCD  tooling for a perfect head finish.All aluminium Harley barrels must be honed with a torque plate to stimulate the distortion that occurs when the cylinder is tensioned on the engine. Here at Harris Engines we have a full range of Harley torque plates to suit all models from Evo to the 124 cubic inch S&S barrels. Combine this with our Sunnen CV616 honing machine we can offer the ultimate in cylinder boring and honing.