Quote:
Originally Posted by car 311
those sound like the mains that were suggested to me. could not get a part number, and could not find them here with our host, that's what generated this thread.
can someone direct me to a good thread that walks through the checking of the bearing/crank tolerance prior to the dry run reassembly?
|
Porsche Motorsport part number: 996 101 901 02R
You need a precision bore guage and micrometer to measure the main bearings as installed in the case then measure the difference of the crank journal dimension. Or you can use the simpler, cheaper, less sophisticated method of plastiguage as I did. I installed the main bearings in their bores, lined each bearing with plastiguage, dropped in the crankshaft, assembled the case halves, torqued the through bolts. Then disassembled and checked the plastiguage on each of the seven bearing shells. Each bearing was an identical .002in. clearance. I also mic'd the shells and compared this dimension with the stock bearings that came out of the motor (virtually identical). All the bearings fit snugly in their saddles and look to fit perfectly in this application.
