Posted by richardp3 on November 02, 2008 at 06:44:25 from (71.164.209.4):
In Reply to: Ford 800 Head posted by Homerville Bill on November 01, 2008 at 20:22:04:
I'm with Leland. You can make this tractor go another 50 years with a $450 engine rebuild kit and a few hundred dollars in machine shop work, more if you run into unexpected problems. That way you won't be second guessing yourself when you get it back together.
If you do decide to just do enough to keep it running for now, which is a valid, but riskier decision, your local machine shop can inspect the head and give you an opinion on condition. If it needs work, a valve kit is under $100 on this site, and the machine shop should do the head work for another $100 or so if the head isn't cracked. If it's cracked, add another $100-$300 to have it 'stitched' up. Ford 134/172 heads are known for developing cracks around the exhaust valves (I just had a one reworked, total cost $425). See attached picture and closeup of stitched cracks.
Before you reassemble, check the major wear components (cylinder bores, pistons, crank bearings, main bearings, and oil pump). If you put new rings and a valve job on an engine with a weak lower end you will hasten the weakest points failure.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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