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Started ripping it apart today got it running good need to rip the rear end out and see why it is grinding when you put it in gear I have an extra if I need to swap it. I build engines for caterpillar I took this one apart to check it out the oh180 looks like new inside which is good.

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I turned the pics for ya. I think the SS's came with the Onan's or it might have been an option?
 
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I'm kind of glad it has the tec. It's hard to get parts for the tec they don't make pistons or rings anymore, but there are companies who will make you a custom piston, and I know how to make rings I have to make them at work for old cat stuff. I could probably make a piston there too. The onan I hear is hard to get parts for too. So I'm glad it has the tec it is different than most of them that's what I like. That cast iron engine is heavy I put it on my work bench it was probably 100 pounds at least. I have an 83 gt 18 with a twin briggs so I guess I need a single. I rebuild alot of tecumseh motors at my home gas engine shop so I guess it fits me
 

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Your 78 gt18 came with an OHV Tec? Is that factory? Guess I thought they all came with the Onan twin.
I turned the pics for ya. I think the SS's came with the Onan's or it might have been an option?
Yes in 78 and/or 79, the Tecumseh OH180 was an option on the "GT18". I would imagine it made them a little cheaper so Sears could sell more tractors if people couldn't afford the Onan models. Not a whole lot out there though.

I bought a couple tractors off a guy, he had two of them.

I am like you Gary, I like the old Tecs. They are about all I own and I've learned them so fits me. They vibrate a little more than I like, but good old working motors.
 

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Discussion Starter · #9 ·
Got some more work done on this one it will be done soon!!! Got the harness in, I had to make a new one, got all the stuff underneath back in, just have to put the oh180 back on and the rest of the body work
 

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Discussion Starter · #11 ·
Thanks kenny, it was alot of work. I'm slow right now with my small engine shop so I have had alot of time to work on it. Probably would have taken me a year if I was busy
 
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Got some more done today, about had a heart attack when the starter wouldn't work. But the block wasn't grounding through the new paint . Got my motor on and my muffler that I hand made. Sorry the one pic is side ways

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Discussion Starter · #13 ·
I also still need to wipe the grease off my side walls I put on to paint the wheels
 

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Looks like the toe is off a little, could be justt the pic!
 
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