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A Tired Tractor Tribute

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Nolan

07-18-2000 04:16:55




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Took a little time to take my nose off so I could install the new radiator. Yes, if you go charging through trees while brush hogging without a grill in place you can eventually poke holes in the radiator. Amazing that!

Spent some time looking at my rather tired 8N. Admired the front pulley which I think is being held on by the belt. Poked a wire and watched it fall off the ignition coil.

Decided to pull the head off and see what I could see.

At first glance, it didn't look that bad. Lots of carbon, but all the pistons and valves were there. Then I noticed the cylinder wear. Piston to wall clearance is on the order of 200-300 thousanths! That could explain the oil consumption of a half gallon every hour or two I currently enjoy.

The money's not there to fix the engine up. Way to many other pressing matters. But I tip my hat to the engine that keeps on chugging along, quite reliably, with this kind of wear. Lots of old lawnmower engines won't even start with that much slop.

I will quit using a multi-weight oil though. I think it's time for some straight 30 weight, maybe even 40 weight.

I can just imagine the power if I were to rebuild this engine!

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Dennis Hart

07-18-2000 06:52:42




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 Re: A Tired Tractor Tribute in reply to Nolan, 07-18-2000 04:16:55  
I have an 8n and am going to rebould it. Everyone
keeps asking thick wall or thin wall. Whats the diff and how do I find out what I have in mine?
Any help would be great.



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Bill(Tx)

07-18-2000 10:58:53




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 Re: Re: A Tired Tractor Tribute in reply to Dennis Hart, 07-18-2000 06:52:42  
Thin wall sleeve



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again

07-18-2000 11:04:35




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 Re: Re: Re: A Tired Tractor Tribute in reply to Bill(Tx), 07-18-2000 10:58:53  
I've had very good results with the thin wall from this winters overhaul. No oil consumption or smoke from the usual ring seating. Even old Ford guys don't agree which is best, thin or thick wall sleeves



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Claus

07-18-2000 09:10:20




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 Re: Re: A Tired Tractor Tribute in reply to Dennis Hart, 07-18-2000 06:52:42  
Theoretically the star or diamond at the serial number denote what sleeves are in the engine. Unless you have accurate history of this tractor, the only way to tell for sure is to remove the head and take a look. A lot of .040 (Steel) sleeved engines when rebuilt, had the block bored for .090 (cast iron) sleeves. Rings will seat better in cast iron than steel.
Happy Motoring
Claus



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Dave Todd

07-18-2000 06:45:38




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 Re: A Tired Tractor Tribute in reply to Nolan, 07-18-2000 04:16:55  
I know just what you mean. Hey, it should keep the mosquitoes away????
Dave



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Nolan

07-20-2000 06:24:12




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 Re: Re: A Tired Tractor Tribute in reply to Dave Todd, 07-18-2000 06:45:38  
That's something that's really surprised me, how little it actually smokes. There's no clouds following me, and it doesn't spray oil or fumes out the breather. Though if you stand in back of the tailpipe, you'll become spattered with wet black droplets. I guess, due to the low compression and such of this engine, it doesn't even attempt to burn the oil, and just pumps it out instead.



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