Headset and Bolts Kit

Head gasket failure can be caused by a number of different factors. The most common cause however is overheating. The engine overheating causes thermal expansion in the head and block, generating excessive pressure on the gasket. Dependent upon the type of gasket, this added pressure will inevitably cause deformed fire rings, broken bridges, blocked water holes or swollen/destroyed fibre material around water holes. This damage is irreversible and the gasket loses its seal.

Once the seal is lost coolant can leak into the cylinders, past the piston rings and into the crankcase, causing costly repairs. Coolant leaking into the cylinders may also be forced back out through the exhaust as the pistons force it out on the exhaust stroke. This can be identified by steam leaving the exhaust system.

It is important to remember that a head gasket failure is predominantly caused by a different component failing first, causing the engine to overheat. When replacing the head gasket remember to check the thermostat, radiator and water pump for any damage. If the cause of the failure is not diagnosed and repaired correctly then the new gasket will fail again when the engine runs hot. Following the fitting instructions is necessary to prevent further failure. For example, if bolts or not tightened in the correct sequence or incorrect torques are applied the new gasket is likely to fail. All Reisse kits come with technical information and fitting instructions included in the box.

A head bolt exerts its greatest clamping force when stretched to its yield point. Once stretched it will not return to its original form. Replacement of the headbolts is essential when replacing the head gasket; the old bolts should not be re-used under any circumstances. Re-using the old bolts will produce uneven loading, resulting in snapped bolts and head gasket failure.

All Reisse head set and bolts kits include everything required for a head set replacement including bolts, head gasket, manifold gasket, locating dowels, valve stem seals and oil seals produced from Viton rubber (the OE thermal spec).