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Ford 9N, 2N & 8N Discussion Forum
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8N with a 9N Engine?

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8N Is In

10-30-2004 22:41:18




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I have an early model 8N (4 speed, 8N wheels). The serial number stamped on the block is worn away. I crawled under the tractor and found "9N.66.75" stamped on the oil pan cover. It also had "SH" and "H12" stamped on the bottom of the pan as well. Could this be a replacement 9N engine put on an 8N tractor? How can you tell the differences between the 9N and an 8N engine? Thanks.




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Dell (WA)

10-30-2004 23:05:47




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 Re: 8N with a 9N Engine? in reply to 8N Is In, 10-30-2004 22:41:18  
Is In..... ...9N-6675 is the castiron oilpan partnumber and fits ALL N-Tractors from 1939 to 1952.

The principle difference between the frontmount 9N engine and the frontmount 8N engine is (are you ready for this?) .....the serial number..... One starts with 9N and the other starts with 8N.

Also the 9N engine had 6:1 compression and 23.56hp; the early 8N had a slightly higer 6.2:1 compression for 25.77hp. But replacement cylinderheads up ALL engines compression ratios to the sidemount 8N's spec of 6.5:1 ratio and 26.19hp HTH..... ..Dell

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