Paige, here's a 2-sided dealer ad brochure on the 801 Diesel model that will give more specific info than the owner's manual posted in this section of our web site:

Hope this helps............Ed
'52 8N475798

Thanks Ed!
There is a tractor mechanic here that is boring out the 172 CI gas 801 series to a 192 cubic inch. He says that takes it from a 40 hp to a 50 hp. Have you seen anyone doing that?

Paige

• Link: http://www.vrbo.com/19403

First time I've ever heard of someone doing that, Paige. Not sure why it would be necessary, unless you were entering a pulling contest or doing it just to do it. 40HP is plenty for most working tractors in that size range. 20ci is a pretty intense overbore for a 4-cylinder engine. I don't know enough about doing that type of work to know if there is enough metal there to do it, whether it will affect cooling afterwards because you don't have enough metal left to absorb/transfer heat, how the rear end/axle will holp up to the additional hp,etc. Personally, if I had an 801 diesel, I might accessorize it with power steering (if not already there), a more comfortable seat, a canopy, maybe ROPS, but I'd tend to leave the engine alone - it's pretty stout as-is.

Just my .02................Ed

Hi Ed,
I was wondering the same thing. The guy that is doing it buys old tractors cheap and sells them for $4,200.00 after he repaints them
and replaces certain things.

Mine already has power steering. But the clutch went out the other day so I am trying to find someone reasonable to replace it. I have been told it is a big job.

Do you know where the best place to order parts on the internet is?

Thanks,
Paige

Paige, what model 801 do you have? 801 is the series designation of the tractor, not the model. Do you have the 4 or 5-speed tranny? Do you have live PTO (2-stage clutch)?

>> But the clutch went out the other day so I am trying to find someone reasonable to replace it. I have been told it is a big job. <<

If you are even moderately mechanically inclined, splitting the tractor and replacing the clutch are not that big of a deal, assuming you have a place to work and a decent (even home-owner's) set of hand tools. This is one of those jobs that seems very daunting when you've never done it, but if you suck it up and get it done, you'll be amazed about how it's NOT that big a deal and you'll sure be proud of yourself. You can get plenty of support from people here at this site if you run into problems while doing it. You can order a parts book on CD for a donation to this site - click on Support NTC in the red menu bar for more info.

Before you get into splitting the tractor, are you sure that your clutch problem could not be resolved by adjusting the pedal play?

Hope this helps............Ed
'52 8N475798

For parts, I'd check with John Smith and Just 8N's (contact info in our Links section here), and email Kelly Jewel at jewellco@scrtc.com. Believe it or not, if you have a New Holland dealer nearby, they will carry a lot of parts for the Hundred Series tractors. There are a lot of them still in operation today. You can always place a Wanted Ad here in our Ads section. There are a couple of folks here to part out old tractors and sell the components.

Hope this helps............Ed
'52 8N475798