Posted by Vaughn on Thursday, August 26, 2004 at 9:37PM :
In Reply to: 0.040" undersize crank in 230? posted by Jim Chance on Thursday, August 26, 2004 at 9:10AM :
You can check around for a machine shop that welds then grinds. One shop I use builds up the journal ($40 each) using a mig welder then grinds. Surface hardness - Rockwell 60 when finished. If you do decide to grind here are the numbers for
.040 mains Federal-Mogul Corp.# 415M40
.040 Rods Federal-Mogul Corp.# 9185SB40
And yes the Military does use .040 undercut bearings. In fact you can get bearings as much as .060 under
NOS crank from VPW is about $300+
Now might be the time to consider having the crank nitride coated for hardness and then ground. Check for a price
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