Number on con rod bearings

[nms-georg]

Hi Guys!
Took my con rod bearings out and found on them the numbers 4324 and 31131201. How do I know if this are the standard ones or already one of the oversized ones?
Thx

[commander]

According to this thread, probably standard size.
http://www.fordsontractorpages.nl/phpbb ... f=3&t=2402

Measure the crankpins and see what size they are, and if they need a re-grind.(out of round,scored,pitted)....

Get yourself some plastigage and check clearances on reassembly, whether fitting new bearings or re-using old ones.

[nms-georg]

First, thanks to your answer.

Have checked today my diamater of the crankhaft and, sh****;

1) 57.1mm
2) 57.1mm
3) 56.6mm

So my third cylinder is somehow damaged

[commander]

First, thanks to your answer.

Have checked today my diamater of the crankhaft and, sh****;

1) 57.1mm
2) 57.1mm
3) 56.6mm

So my third cylinder is somehow damaged

or possibly #3 was reground .020 (in) undersize at some point in the past... It's common practice to regrind all at the same time, but I sometimes see only one or two done (if others in spec) to save a little money.
I believe you can get .030 (in) oversize bearings for this crank. So it may be possible to save it. Suggest you pull it and have a look at the mains also.

[nms-georg]

Hi!
Realy? I have always learned that it's only allowed to reground all ones or no one. But that could be possible, 'cause I don't think that the one at cyl 1 and cyl 2 are in very good condition and number 3 is to "small"...
Will try it with a plus 0.3 bearings and see how it goes...
Thanks you all guys