Saturday, January 1, 2011
Cylinder Head 7
Finished up on the porting clean-up. These are a couple of shots of the number 1 cylinder with different light then number 3. The others are similar. I didn't realize it earlier, but someone has been in here before as the valve guides (as you can see on close up) are nicked on the ends. Seems to be a perfect fit to a burr from a die grinder. Note that the lumps and bumps have been for the most part removed. I also measured the camshafts and found that they have been reground once before. These older cams should have a 5/16" lift, but they have an 11/32" lift. Definately not factory correct. Later c-type heads featured 3/8" lift. I'm not sure what to think of the ones I have at this point. Some of the older cams are exchanged for later xj type with 3/8"lift and less abrupt valve action that primarily makes the valve train quieter.
Finally the front engine seal conversion arrived and I installed it as well as the front chain cover and the water pump. By the way, the nail has been replaced with a proper pin and the wire holding the pulley housing together has been replaced with a proper snap ring.
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