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Farmall & IHC Tractors Discussion Forum
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Offering another Deal - Super C distributor

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Dave in CT

01-30-2005 07:04:04




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Ordered a replacement distributor for my H. Fellow asked if I'd be O.K. with one off a Super C. In my ignorance, I said 'sure, if it has the same advance as an H'. When I disassembled it I found '30L' stamped on the distributor plate - dang. The gas-only H takes a distributor with 20 (distributor) degrees advance. This Super C distributor is immaculate - next to zero side play and very little wear on the cam lobes. I'm posting it here, like Magman, in the hopes of selling it quickly ($100 + shipping) instead of shipping it back.

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rebuilder

01-31-2005 04:49:29




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 Re: Offering another Deal - Super C distributor in reply to Dave in CT, 01-30-2005 07:04:04  
Dave in CT: I would use the distributor with no question. Especially if it is in good condition as you suggest. While H dist"s. called for 40* advance in the books many were changed over to a smaller advance 30*or 25* for more power. Generally as you progressed up the farmall line the advances kept getting smaller with heavier spring packages(for power). For example(I"ll compare just the general gassers. Too many other variations with L.P./Distillate/ and firecrater distributors.)The H/M/W-9 have 40*advance. A/B/C/SA/SC/SH/SM/1000/200/300 have 30* advance. 400 had 25* advance. My advice if you could not get the distributor with the timing you wanted was to go to the next size down in degrees. Most of these distributors are interchangeble with a few exceptions: Cubs-16*/404-20*/504-21*(maybe a couple others)--These are pretty much absolute in timing advances.

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CNKS

01-30-2005 09:13:40




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 Re: Offering another Deal - Super C distributor in reply to Dave in CT, 01-30-2005 07:04:04  
I don't know what, if any difference you will notice. The A through C has 40, Super C 30, H 40 (not 20 as you indicated), Super H 30, M 40, Super M 30. These are IT manual specs. I imagine you can purchase the proper weights, springs, etc, easier than you can sell it.



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CNKS

01-30-2005 12:14:30




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 Re: Offering another Deal - Super C distributor in reply to CNKS, 01-30-2005 09:13:40  
Sorry didn't read close enough -- however in my H (40 crank degrees) and Super H (30 crank degrees) parts books, the weights are the same, only the springs differ, according to the part numbers -- are there any other differences, in case I ever need a distributer? I don't have a Super C. (should have posted this below your last response).



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Dave in CT

01-30-2005 10:14:52




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 Re: Offering another Deal - Super C distributor in reply to CNKS, 01-30-2005 09:13:40  
That's why I said 20 (distributor) degrees. They are half of crankshaft degrees. You're right, the crankshaft advance degrees for a gas-only H is 40.



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NDS

01-30-2005 08:41:23




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 Re: Offering another Deal - Super C distributor in reply to Dave in CT, 01-30-2005 07:04:04  
While it might not be correct advance you will not notice difference in way tractor runs. Most people I know time these old tractors by ear and advance does not seem to be that critical. I have been running 53 SM distribitor on my 1941 A for 25 years and it runs near perfect as far as I can tell. Do not have H parts book but IH parts book shows same distribitor for all applications on A and M ...853 890 R91 distribitor complete... so they must not be all that application specific.

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Dave in CT

01-30-2005 09:02:08




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 Re: Offering another Deal - Super C distributor in reply to NDS, 01-30-2005 08:41:23  
I know it's common practice and I could get away with it but there would always be that doubt that the engineers wouldn't approve. I'd just as soon get the right one and forget about it.



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NDS

01-30-2005 09:46:01




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 Re: Offering another Deal - Super C distributor in reply to Dave in CT, 01-30-2005 09:02:08  
I see your point guess it is just that I came from different background. When I was growing up we had 3 to 4 letter series tractors that often ran 16 to 24 hours a day 6 days a week during busy season. All the tractors had been modified in some way or other after first overhaul and they usually performed better than new.



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