JOHN DEERE B UNSTYLED

What all is involved in rebuilding the oil pump in a unstyled b is this something i should do if I am installing new rings I don't know a lot about these motors but I am learning. Also where is the best place to purchase the ring from. My bore is 4 1/4'' and the pistons are cast so can anyone tell me what rings to order.

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.

www.handjmachining.com. Henry can tell you what you need.

(quoted from post at 15:32:56 08/16/20) www.handjmachining.com. Henry can tell you what you need.

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I can't get that wed site to pull up

I can't get that wed site to pull up

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Here is a clickable link:

H & J Machining

Any good engine/machine shop should be able to order them. I got mine from local shop and the rings were made by Hastings. In fact, that was the rings that the top ones had way too much end gap. Called factory, they sent me 2 replacements that were ok. So, lesson for today, check all end gaps. Factory rep said each type of ring is made by different personnel and on different machines. Another thing for lesson 2, have the valves serviced by a shop that has a good reputation and have hard seats installed, and have the bore on the intake guides at the larger limit. Makes a world of difference in how easy that tractor will be to start. Enjoy, George

Pix of my 37 B

Pix try 2



The old bugaboo got me again--pix size was too large, ones and zeros get lost over the web.