August 15th

Today we where dismantling a engine ( without the intake manifold ).

To start we had to make sure the timing on the engine was timed properly so the pistons 1 and 4 were at tdc and the middle ones (3 and 4) were bdc. We removed the exhaust manifold afterwards, Then we removed the rocker cover so we could unfasten the head bolts/ rock arm bolts. We had to make sure we knew what bolts went were cause specific bolts could have stretched or formed to the specific holes. The reason this happens is cause when the engine heats up the metals and alloys expand and twist and they are forced to stay together causing bolts so stretch a bit. After removing the head from the block we had to remove the valves, to do this we used a special tool called a valve spring compressor. When taking the valves out we would inspect them to make sure the steams on them weren't damaged or bent. Also when taking these out we didn't want to mix up any parts.

As S.D.L Rob wanted us to number the pistons and give the firing order but it varies from engine to engine , the ones we were working on Ford fiestas B3's going from left to right numbering the pistons 1,2,3,4 would fire in a 1,4,2,3 sequence.