[1ViciousGSX]

Originally posted by Raptor+Feb 12 2004, 07:29 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Raptor @ Feb 12 2004, 07:29 PM)</td></tr><tr><td id='QUOTE'>My .02
This isn't necessarily a bad think considering that by reducing the diameter of the journal you are slowing the speed of contact at the bearing surface.

Reducing bearing surface speed improves reliability at higher RPM and the journals are plenty large enough to handle it without sacrificing any strength.&nbsp;

I definately could be wrong, I am getting old you know.[/b]

Originally posted by LightningGSX@Feb 12 2004, 09:02 PM
Wouldn't reducing the journal diameter increase contact speed? I would also think reducing diameter will also decrease bearing surface area, therefore increasing overall friction.

Originally posted by JET@Feb 12 2004, 09:19 PM
Raptor, I agree with Lightning, you are going to increase the pressure on the oil between the bearings if you decrease the diameter of the crank.&nbsp; Just like smaller diameter tires have a smaller contact patch.&nbsp; I would think that is a bigger possibility of squeezing the oil out than the extra speed.

The difference is not going to be noticeable on such a small change in diameter. Yes in theory it makes sense, but without a bigger change in size (like cutting down a 400cid sb chevy crank to fit in a 350cid block) it's not even really worth thinking about. Small block Ford guys would try and use smaller rods for that reason also.

<!--QuoteBegin-Jacek@Feb 12 2004, 09:11 PM
wouldnt it just fill up with a thicker layer of oil?[/quote]
You would use thicker bearings to go with that thinner crank.

And yes Raptor, we know you're getting OLD. :bounce: