:: ENGINE PROBLEM ::

Most cylinder bores distort when the cylinder head is bolted to tension. If the block is bored free (without a stress plate fitted) the careful machining can be upset when the engine is assembled. This will lengthen the bed- in time of the rings. The stress plate is a flat robust plate, the same shape as the head gasket, that is tensioned into position to simulate the conditions of the assembled engine. The boring and honing procedures are carried out with this plate tensioned in place. Once removed the bores may show signs of ovality and distortion but will return to their machined finished sizes once the head is fitted.