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8n Engine Rebuild

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Ron (8n509270)

09-23-2002 18:11:39




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It seems like every time I fix something something else breaks. I parked my N today and there was an oil leak. It hasn't been there before (it's parked on concrete). The engine has always smoked a little on start up. I plan on going ahead and doing a total rebuild and paint this winter.

How difficult is it to rebuild the engine? Never rebuilt an engine before. Would it be more practical to have the FNH dealership do it? What is a reasnable price?

TIA

Ron

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Tommy (MO)

09-24-2002 08:59:25




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 Re: 8n Engine Rebuild in reply to Ron (8n509270), 09-23-2002 18:11:39  
Ron,

Sorry to hear about your woes. The rebuild isn't all that bad of a process. I'm finishing up one on a 2N myself. I had a cracked engine block, so went with a replacement block, took it, the head, crank, cam and connecting rods to a reputable machine shop. We ended up needing to correct the bore in one of the cylinders, so all the cylinders were bored to accept the .090 sleeves. I ended up spending a little over $1300 with the machine shop. I ended up with a block that was decked, bored and new sleeves installed, completely new valve train installed and adjusted, crank ground, cam and bushings checked and installed, oil pump rebuilt, connecting rods checked and trued, new pistons installed on connecting rods, head surfaced, flywheel surfaced and bearing replaced, and a new ring gear installed. Also included was all the bearings, gaskets, rings, new head studs and nuts, and assembly lube and sealing compound for the studs. I could have skimped in some areas and still been alright, but I chose to lay out the extra cash for the little "extras" like the flywheel and ring gear. From what I've heard of others' experience, a fella should be able to have a complete overhaul done for around $1000, if they do the tear-down and reassembly himself. I also purchased an engine stand and a chain hoist. I got these at a farm auction pretty cheap. I even picked up a new set of four-ring 9N/2N/8N piston and rings at the same auction.

In summary, go ahead and open her up. Get a little experienced help in determining the actual problem areas, find a reputable machine shop and dive right in. Of course the FO4 manual is a necessity, and a video or two wouldn't hurt either.

Best of luck and let us know how it works out.
Tommy(MO)

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Evil Steve

09-24-2002 07:31:06




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 Re: 8n Engine Rebuild in reply to Ron (8n509270), 09-23-2002 18:11:39  
Yeah, like Don Tx says, look at post below "Big Trouble." Mark H and I had quite a discussion about it yesterday.



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Evil Steve

09-24-2002 07:26:03




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 Re: 8n Engine Rebuild in reply to Ron (8n509270), 09-23-2002 18:11:39  
Yeah, like Don Tx says, look at post below "Big Trouble." Mark H and I had quite a discussion about it yesterday.



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Bill W.

09-24-2002 06:28:15




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 Re: 8n Engine Rebuild in reply to Ron (8n509270), 09-23-2002 18:11:39  
Get you an FO 4 manual and a Ford Master Parts catalog and if you're minimally mechanically inclined, you'll find its not such a hard job. One of the rebuild videos is also a big help. Its fun, good therapy and saves money. You'll need to let a machine shop do the crank and valve work, but you should be able to do the rest. A small chain hoist and motor stand are necessities. Other than that, basic tools will get you through.When you disassemble the engine, don't worry about the sleeves and valves; machine shop will remove those. Get you a complete rebuild kit appropriate for your engine. If you don't run into unforseeen problems such as cracked head or block, you can do it for less than $1,000. It makes a great project if you have another guy (or good wife) interested enough to help. This board is priceless for expert advice and support. Good N-ing.

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Bill W.

09-24-2002 06:27:38




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 Re: 8n Engine Rebuild in reply to Ron (8n509270), 09-23-2002 18:11:39  
Get you an FO 4 manual and a Ford Master Parts catalog and if you're minimally mechanically inclined, you'll find its not such a hard job. One of the rebuild videos is also a big help. Its fun, good therapy and saves money. You'll need to let a machine shop do the crank and valve work, but you should be able to do the rest. A small chain hoist and motor stand are necessities. Other than that, basic tools will get you through.When you disassemble the engine, don't worry about the sleeves and valves; machine shop will remove those. Get you a complete rebuild kit appropriate for your engine. If you don't run into unforseeen problems such as cracked head or block, you can do it for less than $1,000. It makes a great project if you have another guy (or good wife) interested enough to help. This board is priceless for expert advice and support. Good N-ing.

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Bill W.

09-24-2002 06:07:30




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 Re: 8n Engine Rebuild in reply to Ron (8n509270), 09-23-2002 18:11:39  
Get you an FO 4 manual and a Ford Master Parts catalog and if you're minimally mechanically inclined, you'll find its not such a hard job. One of the rebuild videos is also a big help. Its fun, good therapy and saves money. You'll need to let a machine shop do the crank and valve work, but you should be able to do the rest. A small chain hoist and motor stand are necessities. Other than that, basic tools will get you through.When you disassemble the engine, don't worry about the sleeves and valves; machine shop will remove those. Get you a complete rebuild kit appropriate for your engine. If you don't run into unforseeen problems such as cracked head or block, you can do it for less than $1,000. It makes a great project if you have another guy (or good wife) interested enough to help. This board is priceless for expert advice and support. Good N-ing.

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DON TX

09-23-2002 19:29:26




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 Re: 8n Engine Rebuild in reply to Ron (8n509270), 09-23-2002 18:11:39  
If you'll look down the page and find the post "BIG TROUBLE", the discussion is on rebuilding N engines. Lots of info for ya.
HTH
DON TX



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