mixed crankcase

Hello ! i have a large batch of open motor but the crankcases are splitted have been mixed. is there a way to know wich one is fitting to a other one , there is number indicated in the molding just upper the kick shat written like 92/26 and the other part have also un number. does any one know what those number means? do they hould be the same on the lower and upper part ? is there a way to identifie wich lower cranckase is going to wich upper crankcase ?
If somebody could hepl it will be apreciate!
thanks!

Pics!

One hell of a puzzle. :ohmy:
Steve

After thinking on this, the locator pins are drilled as a set. It might be possible to match halves this way. The outside milled surface should be smooth if they match. I had a guy washing rods for me while I was doing other things. I told him not to mix them up, they are bored as a set. They weren't marked, he walked away with all of them still in a bucket in pieces. I tried to match them by going by the grind marks. I put the engine together thinking I had it right. I fired it up and it sounded like new. It idled then froze up. I should have done it myself but the guy was whining about not having any money. I never made that mistake again.
Steve

Hello ! Thanks to every one for helping! I will post pics on monday, I think those small number indicated on inch halves should signified some thing and may help . i found this pic on the net this number i am talking about in the red square for the lower crankcase , the other one is on the top of the upper crankcase at the kick shaft localisation . Should be corresponding both ?

Thanks i tried to insert a pic but it do not seem working !

If you're talking about the ones in the circles, they are casting numbers. The one on the top of mine next to the kick start has no numbers in it. I don't think that will help.
Steve

If you have a bore gauge you could use trial and error assembling halves and then checking the crank bearing bores to see if they are round. Once you get a matching pair move to the next set and keep going...

Thanks! Some time numbers in this circle are invisible or hard to read!

thanks! i have a bore gage! i will try your way on monday and will come back to you thanks again !

does that mean main caps mixed up also???

They'd have to be. When the tweekers down the street stole my cases, they didn't get the main caps. All they got was aluminum.
Steve