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New pistons and sleeves too tight for starter to turn

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Plowboy1972
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Joined: 15 Dec 2017
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PostPosted: Mon Dec 25, 2017 7:36 pm    Post subject: Re: New pistons and sleeves too tight for starter to turn Reply to specific post Reply with quote

Dick L. I heard you are familiar with the model b. I recently purchased a 49 with a CE low octane motor that was rebuilt. It runs well with 99lbs compression across all cylinders. Any tips on improving performance for tractor pulling? Also any tips on tire pressure for different tracks?

Thanks
 
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Goose
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PostPosted: Wed Dec 27, 2017 8:25 am    Post subject: Re: New pistons and sleeves too tight for starter to turn Reply to specific post Reply with quote

Do the pistons move freely in the cylinders? I once tried to assemble an engine and found the block had been bored to EXACTLY the cylinder specs with no allowance for piston clearance. I had to hone the cylinders myself to get a couple of thousands clearance, whatever the spec was.

That being said, and without even knowing the model of tractor or other information, there are so many possible errors it's impossible to know where to start. I would assume everything has been lubed with assembly lube while it's being assemble.
 
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kenbob
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PostPosted: Sun Jan 07, 2018 6:11 am    Post subject: Re: New pistons and sleeves too tight for starter to turn Reply to specific post Reply with quote

My two cents: My brother and I overhauled his 1956 ford 223 6 engine in car. We were working in a not well lit garage. When we started putting the rod caps back on, it was a lot easier to see the fomoco stamp on the bearings than the finely stamped numbers. So after we put in two we noticed the fomoco stamps were on one side of the bearing cap so we used that as our guide to replace the rest as it was easier to see. Well even before we put the head on we tried to turn it and we could not turn it even with a breaker bar. Took bearing caps off only to find the fomoco stamps were not all stamped on the same side of the cap. (Not even sure how or why that was possible) Got a flashlight and reading glasses (which I should have had on from the start) and put them back with the numbers aligned and it spun right over.
 
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Leroy
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Joined: 09 Jan 1998
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Location: Wapakoneta, Ohio

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PostPosted: Sun Jan 07, 2018 7:34 am    Post subject: Re: New pistons and sleeves too tight for starter to turn Reply to specific post Reply with quote

If you are using used bearings over that had no problems WHY SHOULD YOU HAVE TO CHECK CLEARANCE? They should have same clearance as when taken out and everything was good. So why measure?
 
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jd36a
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PostPosted: Tue Jan 09, 2018 8:16 am    Post subject: Re: New pistons and sleeves too tight for starter to turn Reply to specific post Reply with quote

Checked with him and I was off by 1 year as it is a 1962 version. The model is a D14 and he said the size was a 149.
 
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DrAllis
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PostPosted: Tue Jan 09, 2018 10:15 am    Post subject: Re: New pistons and sleeves too tight for starter to turn Reply to specific post Reply with quote

He's got a connecting rod turned around or a piston pin dragging against a cylinder wall.
 
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