Posted by Leroy on August 16, 2020 at 14:03:12 from (96.45.243.241):
In Reply to: JOHN DEERE B UNSTYLED posted by Dwayne Gardner on August 16, 2020 at 12:38:30:
4 1/4" was factory bore but it could have been rebored for an over size piston-rings of .045 or .090 if it ever was used hard and started to use oil so first thing is you need to determine if it has ever been rbored , common, or still orignal size pistons or if they are an oversize before even thinking about buying rings. Better to put curent rings back in than trying to put ,045 0r .090 rings in a standard bore and if rebored you cannot put a standard ring on an oversize piston. But the ubstyled B could have been bored to put in 4 1/2" pistons from a styled B that would have given it more power. So actually find the size on your pistons and measure the boor to see if it is close to factory of 4 1/4" or if it ia way loose the if your pistons are standersd size they will not flop around in cylinder and bust a piston and new rings. Takes very special measuring tools that if you are asking about bore size you no not have or know how to use if you would spend hundres of dollors on some and then could not undrestand how to use them. Me I know what you would need to measure but not how to use them. So an unstylerd B could have 8 different size pistons in it.
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