ring seating

300winchester · Jul 9, 2018

Can anyone offer advise on proper seating of rings for a JD400 industrial. We are putting in new sleeves and pistons and want to make sure rings get seated.
Thanks in Advance
MGM

jacksun65 · Jul 9, 2018

make sure the sleeves have a good crosshatch pattern. Don't Idle it for the first coupla hours, then don't run it hard for a while.

Mike M · Jul 9, 2018

Good chance there is an instruction sheet packaged with them. Now adays JD sells a break in engine oil which has been highly recommended on here. If your machine has a pto then a dyno works the best to break them in using those instructions. But without one putting it to work right away should do it. Start at a small load and then increase the load. I forget but I don't think you are to go over like a 3/4 load. Don't let it just sit and idle around and don't lug it down either.

DeltaRed · Jul 9, 2018

The best way is to run on a dyno. But if that's not possible,just run it.As was said,avoid prolonged idleing. Work it. OK to 'pull the snot out it' for short periods,then light to medium load. Just don't get it hot,or stall it down.It other words,just normal work.

4520BW · Jul 9, 2018

Everyone has different way but think of all the new engines that are never broke in.

tomstractorsandtoys · Jul 9, 2018

Lucas oil has a break in additive with zinc that I have been using even with the Deere break in oil. We also run them a few hours on a dyno as well. It seems that today's rings are made hard and can be difficult to break in. Tom

David G · Jul 9, 2018

Put it on a plow and work hard for 8 hours, I think a babied break in leaves a weak engine.

rlp in Co. · Jul 9, 2018

Every engine that I have rebuilt using chrome rings has used a little oil from the start. Not much, but still. The ones that I used the cheap cast iron rings,never used any oil from the start.
I tried everything to get chrome rings to seat,but
no luck.

SVcummins · Jul 9, 2018

Here ya go and work it hard
Untitled URL Link

L.Fure · Jul 9, 2018

(quoted from post at 20:23:30 07/09/18) Every engine that I have rebuilt using chrome rings has used a little oil from the start. Not much, but still. The ones that I used the cheap cast iron rings,never used any oil from the start.
I tried everything to get chrome rings to seat,but
no luck.

I always had the best luck with Hastings cast iron rings. They would seat up before the engine reached operating temperature.

SVcummins · Jul 9, 2018

Put my 4020 on the dyno for 5 hours then took it home and put it on a moldboard plow for 8 hours I worked the guts out of it it doesn?t a quart Of oil between changes

2 9600 · Jul 9, 2018

deere break in oil . then make it cry for mercy .dyno, plow

tim s · Jul 9, 2018

Use Lucas oil break in additive with zinc,,and run it like normal...

jimg.allentown · Jul 9, 2018

Cast iron rings will seat in very quickly, but they have a much shorter life than chrome rings. Chrome rings will take a while to seat unless you have a good crosshatch pattern in the bore. BUT, chrome rings will outlast the cast iron ones by a long ways. Just a matter of how often you want to do a ring job.

rrc300 u · Jul 10, 2018

Never had a tractor redone yet but have had several 4 wheeler engines rebuilt. The performance shop told me to run it like i stole it, then change the oil and run it that way some more. Never had a problem with one of his rebuilds.

ptfarmer · Jul 10, 2018

(quoted from post at 19:15:18 07/09/18) Cast iron rings will seat in very quickly, but they have a much shorter life than chrome rings. Chrome rings will take a while to seat unless you have a good crosshatch pattern in the bore. BUT, chrome rings will outlast the cast iron ones by a long ways. Just a matter of how often you want to do a ring job.

Cast iron rings are good only if you hone the bores since the cylinder walls will be harder than the rings due to all the heat cycles an engine goes through. Have it bored oversize, or replace sleeves you can use harder rings because the bores will be softer. Don not use a synthetic, or semi synthetic oil for break in, a zinc is only really need if you install a new cam, and lifters. Zinc provides a cushion between the cam lobes, and lifters. If you are the old cam, and lifters you don't really need the additive as the cam, and lifter are already broke in to each other. If you get the lifters mixed up you need either new lifters, of have the bottoms of the old ones reground, and use the zinc break in additive. When breaking in new cam/lifters don't idle the engine for the first 20 minutes, you need the oil pressure up to help keep the cam, and lifters cool while they seat together.

L.Fure · Jul 10, 2018

(quoted from post at 03:15:18 07/10/18) Cast iron rings will seat in very quickly, but they have a much shorter life than chrome rings. Chrome rings will take a while to seat unless you have a good crosshatch pattern in the bore. BUT, chrome rings will outlast the cast iron ones by a long ways. Just a matter of how often you want to do a ring job.

My tractors don't get much run time. It will be many years before they need another overhaul. I'll most likely will be dead and gone by that time

roaddevil49 · Jul 11, 2018

Really! Every one missed the original poster's statement that he will be using new kits,liners,pistons and rings.

ring seating

300winchester

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jacksun65

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Mike M

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DeltaRed

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4520BW

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tomstractorsandtoys

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David G

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rlp in Co.

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SVcummins

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L.Fure

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SVcummins

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2 9600

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tim s

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jimg.allentown

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rrc300 u

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ptfarmer

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L.Fure

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roaddevil49

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