Join Date: Jan 2000
Location: San Diego, CA
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Re: How do you Plasti-gauge?
Correct, be sure there is no assy lube or anything on there to ruin the reading. Also, main readings can sometimes vary around the bearing because the blocks are not always straight. I think .0015" is way to tight. I think from memory the mains should 2.5-3.5, and rods 1.5-2.5? I personally have never put a motor together that was tight. Even if I get all the parts machined "perfectly" the motor ends up loose. My last motor was the tightest one yet and it was .0035 mains, 2.5 rods. I had one motor @ .006 mains.
The only measurements that I find accurate are the piston to bore.
It's funny, the book will say be sure to check the clearance, but what do you do when it's too loose? I'm not going to re-grind the damn thing, and I don't want to buy a crank enlarger.