I learned the hard way doing my first 1 piece a few months ago. When they trim the caps to line bore an hone the block they dont address the rear seal groove for that. So now you have a more shallow groove in the cap then the one in the block. This becomes a problem because it now will make the seal off center to the crankshaft, making the cap side tighter then the block side at the lipseal. So before you start triming it you have to measure down with a straight edge at the block groove and the cap groove and trim the seal accordingly for each side of the seal for the correct center.. Im not saying that the 1 piece is bad. I know plenty success stories. Its just more involved then i thought and was overlooked by "me". So i just wanted to share what happend to me. One way to do this also is , if you have a 2 piece seal you can put 1 half in the block and measure what protrudes out. Then with the same have measure it in the cap. Compare the differences and you will know where you're at...
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My Half AN Injun.....
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