Crank and Rod bearing clearance

[86humv]

I had my 6.2 crank ground 1st. under size .010. Bearings are coming in the mail this week. I want to plastigage the crank and rods but cant find the min. or max clearance...anybody know where to fine that info ?
Greg:confused:

[NH2112]

A general rule of thumb is 0.001" per 1" of journal diameter. The best source for 6.2l & 6.5l specs is the Haynes diesel engine handbook for GM & Ford/Navistar diesels.

[Robyn]

About .003" is max
.002" is middle of the road I think
I built my 94 6.5 this spring and I think it was at near .003" on the rods and the mains were slightly tighter.
I had a crank that was fit originally with .0005" undersize bearings and I used std so its a tad loose.

[adey]

what sort of oil pressure does the engine normally operate at?

[john8662]

I typically see .002" to .003" which is doing good.

.002" being on the tight side.

On my '86 engine. I had .002 on the rods and .003" on the mains. Oil pressure is really nice, it's 75psi bone cold, around 55 hot (at 2k rpm). Idles at 40 hot.

J

[GMC 2500]

Take a look at this page.

http://www.v8dieseltech.net/engine/engspec_62.htm

http://www.v8dieseltech.net/engine/torqspec.htm