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K block 700 1987

posted by  someone claiming to be John Sargent on  Wed Feb 13 17:22 CST 2002 [RELATED]

Nope. The K block incorporates the larger main bearings and thrust bearing moved to main bearing 5 (it was on number 3 main bearing). All B230, B21, B23, etc. are 5 main bearing crankshafts. As I stated before, about the first year of production of K block B230s still had the small connecting rods.

What could crankshaft flexing have to do with throwing number 1 connecting rod, or any other connecting rod? Please explain that to me! The connecting rod has a lubricated joint to the crankshaft. With that kind of joint, how do you transmit any kind of force (that would be a moment) which would make that connecting rod more prone to throwing?

The early B230FTs do crack connecting rods. The small connecting rods were not up to the stresses imposed by turbocharged power output. I have two cracked connecting rods as proof. They are numbers 3 and 4. Numbers 1 and 2 were fine and were returned to service at overhaul.

You are correct on the piston oil cooling being added in 1994.






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