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Farmall & IHC Tractors Discussion Forum
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New Rings Break-In

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Kendog

07-26-2007 06:37:09




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Just completed the fresh valve work and new rings/hone on the A, and tonight I'll fire it up.

Any break-in procedure for new rings before hitting the starter (ex; squirt some oil into each cylinder)? Thank you.




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JT

07-26-2007 11:53:17




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 Re: New Rings Break-In in reply to Kendog, 07-26-2007 06:37:09  
An old timer told me a long time ago to break in a new or rebuilt engine, to use it as you would normally use it. If you want it to work hard, use it hard, right out of the box, if you want it to be a wimpy engine, baby it. I rebuilt a B a couple of years ago, with less than 1/2 run time on it, I hooked it a 2-14 Little Genius plow and used it. It starts real easy, does not smoke, runs great. I know a 2-14 plow is a lot for a B, but I wanted to break it in to run and last a long time.

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El Toro

07-26-2007 12:54:11




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 Re: New Rings Break-In in reply to JT, 07-26-2007 11:53:17  
That's what I was told put it to work. That A that I did never used any oil and that 16-inch plow made her open up that governor. Hal
PS: When you buy a new car now they tell you to keep it under 60mph for the first 1000 miles. Hard to do on these Interstates anymore.



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Janicholson

07-26-2007 12:26:26




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 Re: New Rings Break-In in reply to JT, 07-26-2007 11:53:17  
In my experience, the Old Timer was lucky. Every insert bearing and cam to lifter surface (and more) has high spots and burrs on them from putting it together, and the imperfections of real world machining. The 15 hours of breakin give these a chance to "run in" and adjust their operating space. If every component in a engine were perfect, and polished to the nanometer of roundness, I would not argue, but they aren't. JimN

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JT

07-26-2007 13:09:15




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 Re: New Rings Break-In in reply to Janicholson, 07-26-2007 12:26:26  
If we were discussing the newer engines with the thin oil clearance, I would agree with you, but all the older engines have such large clearances, it is not quite as critical. I rebuilt a 351M Ford engine a couple years back and their starting instructions with a new cam shaft is to prime the oil pump, start the engine and let if run at 2500-3000rpm for a 1/2 hour minimum to break in a new camshaft. So I guess everyone has his own way to rebuild engines. I rebuild a lot of single cylinder engines and put them on tractors and go use them and have never had a failure due to not "breaking the engine in".

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RN

07-26-2007 11:30:19




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 Re: New Rings Break-In in reply to Kendog, 07-26-2007 06:37:09  
Check head bolt torque and valve lash after warmup, breekin oil change. RN



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El Toro

07-26-2007 08:19:02




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 Re: New Rings Break-In in reply to Kendog, 07-26-2007 06:37:09  
third party image

When I did an A in 1975-1976 I ran it up and down
a hill 5 or 6 times and then I put the 16-inch plow on it and plow the garden. I wouldn't use any oil but 30wt if your are going to use it as a tractor in the field. It will get thin as water on a 90 degree day. I had used 10-30 oil in this engine since I was working on the engine during the winter. When I was plowing I noticed the oil
pressure was dropping so I pulled out of the garden and put in 30wt oil. The oil pressure didn't drop with 30wt. Hal

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Janicholson

07-26-2007 07:44:50




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 Re: New Rings Break-In in reply to Kendog, 07-26-2007 06:37:09  
Assuming you liberally soaked the assembly when putting it together, it is fine. I would use a squirt/pump type oil can and a small hose to prime the oil system in the oil pressure fitting hole to assure rapid oil pressure, but that is it. Run the engine at various speeds and loads (no single speed for more than 5 minutes) and for the first two hours, no full load, maybe up to 60% then right back to less. After 2 hrs, begin using the full range of power, and speed, but again do not try to pull tillage equip for extended times. after 15 hrs, change the oil (I recommend 15-40 Rotella or RPM Delo) or if way north, 10-40 summer, and 10-30 winter. Synthetics are good after breakin at 15 hrs, do not use 5 wt oils, synthetic or regular. Best of luck, JimN

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Tom Windsor

07-26-2007 20:39:17




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 Re: New Rings Break-In in reply to Janicholson, 07-26-2007 07:44:50  
It would seem to be to be very risky letting a new engine rebuild idle for any length of time at the risk of coating your cylinder walls. I personally would get out on the road and pull the ears down and let it go wide open till the rings were seated.

TW



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