Ring set

SCHITZ · Mar 4, 2015

I have a 1965 Ford tractor 201 3cylinder diesel. I need a set of rings, Do I order the original rings size or the oversize .020 their is no sleeves in this tractor. also can I put these in from the bottom
or take the head of and go from the top?

Mike M · Mar 4, 2015

You have to measure the bore and see what it is. Could be standard or could of been oversized ? Who knows how many times if any ? it may of been oversized already.

old · Mar 4, 2015

You need to pull the head off and remove the ridge that will be there or you stand a good chance that you will brake the new rings. Also a good idea to have a good machine shop check the block out and make sure the cylinders not wore enough to have to be bored etc

El Toro · Mar 4, 2015

There's more to check than just the cylinders. You need to have your crankshaft measured for wear. To do the rebuild right you probably should pull the engine and take it to a good auto machine shop. Hal

Fordfarmer · Mar 4, 2015

The pistons have to come out the top.
If you have standard bore pistons, use standard rings. +.020"
will not work in a standard bore.

The Dukester · Mar 4, 2015

You must pull the head off and measure the bores properly, and cut out the ridge as suggested before you even think about pulling the pistons and reringing them.....and if you do that you ought to have the valves ground. Honestly, if you're not familiar with regular overhauling procedures you should get someone you know who is to guide you through this job or let someone else qualified to repair your engine do the job....Bite the bullet and pay the price, it'll be cheaper in the long run.....I kid you not....and you'll have something useable and reliable. I certainly do not claim to be a great engine mechanic, but I've done several overhauls of engines of various applications, designs, and sizes and know very well from personal experience there is "no cheap fix" when you go to properly repair a worn engine of any size or type...and an engine that needs new rings is a worn engine.

Steve@Advance · Mar 4, 2015

Dukester is right, no room for shortcuts, a diesel is an unforgiving beast. If you are determined to do this yourself, get a shop manual and follow it to the letter of the law. Otherwise you're wasting time and money, lots of money!

Tramway Guy · Mar 4, 2015

Chances are the bores are tapered as well. Reboring is best,
with new properly sized pistons.

pete 23 · Mar 4, 2015

If you have enough ridge that needs cutting you need to rebore. Perfect circle always maintained .004 you did not need to cut. Also, perfect circle did not make .010 rings for many years. They maintained you were good with standard rings unless you had to bore out to .020 over. Just as important as the wear in the cylinders is the wear in the ring groove of piston. A slight ridge worn in the ring land and the ring won't seal against ring land. If land is worn much, ring will flutter and break. If top ring is rectangular and not keystone, you can cut ring groove, install spacer above ring unless piston has banded insert, and that takes care of two problems. Ring won't come near any ridge in cylinder and it will provide good sealing surface for ring in piston.

Ring set

SCHITZ

New User

Mike M

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old

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El Toro

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Fordfarmer

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The Dukester

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Steve@Advance

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Tramway Guy

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pete 23

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