Remanufactured Crankshaft Machining? .10/.10 ? .20/.20 ?

[PolloLoco]

Maybe a question to be added to the crankshaft FAQ, but what do these numbers mean regarding remanufactured crankshafts? What would be better? How do I know what I got if I just ordered one? How will I know what bearings to buy? I hope that I didn't screw something up by just buying the good deal that I found.
What about New Old Stock (NOS)? I have seen NOS mentioned and for sell on ebay, although the dude is in Turkey, $220 for the crank and $180 shipped, too bad he can't just drive down the road and come see me, he's right there.

[RAPTORFAN85]

The numbers reefer to the amount of material removed from the bearing journals to get a fresh smooth surface for the bearings. If the crank is a reman then it may have scores and grooves in the bearing journals so they turn them down to remove them. .010 and .020 bearings are easy to come by, just tell them that you need .010 over or .020 over when you order them. .030 are harder to come by and I would avoid them because you are at the end of the line if you need to turn the crank more.

New old stock is a brand new crank that has been sitting on a shelf somewere for 30 years. It is a new unit.

[SilverXJ]

Also, watch craigslist and use craigshelper.com to find a crank. I found a few used ones on there and a new one a while ago.

[IrnGynt]

I have seen NOS mentioned and for sell on ebay, although the dude is in Turkey, $220 for the crank and $180 shipped, too bad he can't just drive down the road and come see me, he's right there.

I don't claim to be an expert, but the stamp number he claims is on his 12wt crank is 3214722. Is this an alternate number for 12wt's? Also, the stamp number for his 6wt crank is 3214723 which is the stamping number for a 12wt.

[John]

Are you really looking for a 232 crank with only a 3.5 inch throw?
John

[SilverXJ]

I think there is some discrepancies in the # of counter weights.

For example: http://cgi.ebay.com/ebaymotors/CRANKSHA ... 240%3A1318

Says it is the 4 counter weight version, 3235477. From the picture he has I count 4 weights, unless I am counting something wrong. Now, the crankshaft FAQ's last post says that it is an 8 counter weight then in the "code" section it says it is a 10 counter weight crank.

In this auction he lists it as a 12 counter weight 3214722. http://cgi.ebay.com/ebaymotors/JEEP-CRA ... 240%3A1318. Again I count 12 weights, although it is for the 232 engine not the 258.

Lastly, this auction http://cgi.ebay.com/ebaymotors/JEEP-CRA ... 240%3A1318, lists the 3214723 which should be a 12 weight, but he says 6 and out site says 12 and his picture appears to be incorrect as I count 8.

[tomcat]

my 10/10 12 weight came from rock auto, drop shipped from the reman company
rock auto has casting numbers listed with the product
$250 shipped with king bearings. don't forget only rod bearings are usable, mains have to be 4.0 bearings

thread on it here:
http://www.jeepstrokers.com/forum/viewt ... f=15&t=889

[IH 392]

don't forget only rod bearings are usable, mains have to be 4.0 bearings

thread on it here:
http://www.jeepstrokers.com/forum/viewt ... f=15&t=889

I'll post my response there, here TOO.
The rod bearings are all the same.
The '87-'90 4.0L/242's use the same main bearings as the '64+ AMC 199's 232's and 258/4.2L's.

[PolloLoco]

The numbers reefer to the amount of material removed from the bearing journals to get a fresh smooth surface for the bearings. If the crank is a reman then it may have scores and grooves in the bearing journals so they turn them down to remove them. .010 and .020 bearings are easy to come by, just tell them that you need .010 over or .020 over when you order them. .030 are harder to come by and I would avoid them because you are at the end of the line if you need to turn the crank more.

New old stock is a brand new crank that has been sitting on a shelf somewere for 30 years. It is a new unit.

I would assume that .01 and .02 inches have been removed, but why is the number always listed twice? x/x
I also think that I misplaced the decimal point.

[yuppiexj]

I would assume that .01 and .02 inches have been removed, but why is the number always listed twice? x/x

two numbers are given one for the rod journals and one for the mains .

[PolloLoco]

two numbers are given one for the rod journals and one for the mains .

How common is it for the numbers to differ?

[RAPTORFAN85]

How common is it for the numbers to differ?

Fairly common. The mains usualy see more abuse then the rods so they are typicaly turned down more. The crank that I run is a .010 rods, .020mains for example.

[seanyb505]

I got a really crappy one from Oreilleys, the mains are .040. Only one company makes that size of bearings, and theyre in israel.

[IH 392]

I got a really crappy one from Oreilleys, the mains are .040. Only one company makes that size of bearings, and theyre in israel.

Federal Mogul list rod bearings in STD, .001, .010, .020, .030, .040, .050 and .060 under size, main bearings for 1964-1990 engines in STD, .010, .020, .030, .040, .050, and .060 under, and for 1991+ main bearings are available in STD, .010, .020 and .030 under

[seanyb505]

I got all my standard rebuild stuff from Falcon and they couldnt find anything for my application (97 block). It was still around the same price, so I wasnt terribly upset.