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Subject: 9N and 8N camshafts

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Steve Dabrowski    Posted 10-26-2017 at 19:21:59 [URL] [DELETE]        [Reply] [No Email]  
  • 9N and 8N camshafts
  • Anyone know if there is a difference in the lift or timing of early 9N and front mount 8N camshafts. Assume bearing diameters are the same. Also any differences in the pistons and rods.

    JMOR    Posted 10-27-2017 at 11:30:27 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N and 8N camshafts
  • John Smith says, "The last production press-on camshaft gears were in '42. After that all tractors, including all 8Ns, had the bolt on timing gear. The camshaft listed on this site(YT)as "for press on gear" is referring to the small distributor drive gear that presses on the end of the camshaft, NOT the timing gear which bolts on."

    I have seen camshafts both with & without the fuel pump lobe.........maybe this could be a difference you are looking for?

    JMOR    Posted 10-27-2017 at 12:02:41 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N and 8N camshafts
  • I need to read more carefully, as I see you specifically were asking about lift & timing characteristics. I can't say with any certainty, but a few years ago there was a long thread on cam characteristics & some posters said to have measured several N cams reported same results(within limits of measuring capabilities). I don't recall any specific mention of 9N vs 8N. This might lead one to expect that there are no differences.

    Farmer Dan    Posted 10-27-2017 at 11:00:43 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N and 8N camshafts
  • its my understanding that the only changes were the distributor, valves, transmission and center housing. My 9N is using the newer style 8N valves and lifters and the center housing. I don't see why the cam or pistons would have changed.

    36 coupe    Posted 10-27-2017 at 11:11:04 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N and 8N camshafts
  • The 8N cam used a bolt on gear.9N was press on.

    Steve Dabrowski    Posted 10-27-2017 at 17:16:27 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N and 8N camshafts
  • I have my s/n 292 engine that I'm getting ready to rebuild and the camshaft timing slot for the distributer is chipped some. I have a front mount distributer 8N engine that I'm going to take the parts out of so just wondering if I could use it's camshaft in the early engine. Figured there might be some experience out there that would save me some research.

    Thanks everyone for your response.


    36 coupe    Posted 11-06-2017 at 08:34:47 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N and 8N camshafts
  • There are 2 cam shafts on the parts list.Bolt on and press on.

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