Re: BEWARE!! BECARFULL, ALL NEWBEE'S AND OTHERS

Posted by Ron in Nebr on August 24, 2006 at 21:41:03 from (66.252.113.117):

In Reply to: Re: BEWARE!! BECARFULL, ALL NEWBEE'S AND OTHERS posted by Magman on August 24, 2006 at 19:24:04:

Won't go through listing my experiences and qualifications working with engines again, but I'll just say I've done a LOT of them, and not giving any advice here, just observations.

Not sure what advice you were given....sounds like you got the typical advice to "break it in the same way you're gonna run it". This will work SOMETIMES. Not sure about tractor engines(and willing to admit it, although in actuality an engine doesn't know what it's in or what brand name is stamped on the valve cover) but on auto engines, if they're totally new, you need to run 'em at a specific RPM(about 2000) for about 20 minutes after initial startup so that the cam and lifters(assuming new) can get enough oil to "mate" to each other. Once that's done, the old "run her easy for the first "X" number of miles" isn't really applicable anymore. That used to be done supposedly to "get the rings to seat" but with modern ring materials and bore finishes it isn't needed. Again- not sure what replacement tractor rings are made of...so it "might" be neccessary...people with more experience than I have with tractor motors can(and probably already have) answer that.

But if it is neccesary on a tractor engine to "break it in easy" to get the rings to seat, and you didn't follow proper procedures, the worst that'd probably happen is you'd wind up with an engine that burned a little oil.

If you ran it fairly hard and something in the roatating assembly actually "broke" or a bearing went out, other than a lobe wiped off the cam, then most likely there was a problem before it was ever fired up. It doesn't take much....a small peice of something in an oil gallery or a clearance somewhere that's not quite right or even a flaw in an existing or replacement part can do it easy. Lots of variables and you won't know till ya tear it down.

Good luck to you.

Replies:

• Re: BEWARE!! BECARFULL, ALL NEWBEE'S AND OTHERS Ron in Nebr 21:56:20 08/24/06 (0)

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