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Subject: Camshaft Gear

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SteveH    Posted 02-08-2017 at 14:29:51 [URL] [DELETE]        [Reply] [Email]  
  • Camshaft Gear
  • I have a '52 8n with side mount distributor. I located my non-start problem to be a camshaft gear with broken multiple teeth 180* opposite each other. The gear teeth appear to be a densely fiber material that is probably plasticized. I've been told this was done to reduce engine noise but I feel it may have been a built in safety factor to reduce chance of engine damage from gears. I have removed the gear and plan on rehabbing the governor as well as I suspect it may have contributed to the failing of the gear with improper RPM's?
    Any thoughts on how to proceed before I start putting things together would be appreciated. I can get both the crankshaft and camshaft to turn manually so I don't suspect anything is seized internally.

    Jim.UT    Posted 02-11-2017 at 20:29:35 [URL] [DELETE]        [Reply] [Email]  
  • Re: Camshaft Gear
  • I'm pretty sure I have an aluminum cam gear in the garage, but I think it's out of a front mount engine. Not sure of the interchangeability. It's available if you think it will work.

    SteveH    Posted 02-12-2017 at 15:59:34 [URL] [DELETE]        [Reply] [Email]  
  • Re: Camshaft Gear
  • Thanks for the offer. As I'm getting deeper I'm finding a lot more to repair. Think I'll start with new and try and get things together w/o any more hiccups.

    JMOR    Posted 02-08-2017 at 16:03:13 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Camshaft Gear
  • Don't know about your particular case, but I have found the oil pickup screen very clogged with the ground up fiber in a car.

    SteveH    Posted 02-08-2017 at 20:23:42 [URL] [DELETE]        [Reply] [Email]  
  • Re: Camshaft Gear
  • Thanks for the advice. I definitely had planned on draining and changing the oil. I will check the screen for debris as well.

    Bruce (VA)    Posted 02-08-2017 at 16:00:57 [URL] [DELETE]        [Reply] [Email]  
  • Re: Camshaft Gear
  • " plan on rehabbing the governor as well as I suspect it may have contributed to the failing of the gear with improper RPM's?"

    Probably not.

    Just make 100% sure you line up the index marks on the camshaft gear w/ the crank.

    SteveH    Posted 02-08-2017 at 20:33:52 [URL] [DELETE]        [Reply] [Email]  
  • Re: Camshaft Gear
  • Thanks for the reply. Any thoughts on why these gears fail? Is this fairly common?

    36 coupe    Posted 02-22-2017 at 20:23:38 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Camshaft Gear
  • Ive found these gears with teeth worn sharp like a saw blade 180 degrees apart while the rest of the teeth looked good.Bakelite is the material the gears are made from.The gears are press on and have crank shaft and cam gear marks.early Ford V8 engines used the same gear.Count the teeth to make sure you have the right gear.You will have to remove the camshaft, valves and tappets.Too long a bolt on the gear cover will ruin your new gear.Old gear will have to be pressed off.New gear pressed on.Machine shop best.

    Bruce (VA)    Posted 02-08-2017 at 21:20:01 [URL] [DELETE]        [Reply] [Email]  
  • Re: Camshaft Gear
  • Nope, not a common problem. And I'm not really sure there is a "usual suspect" in the failure. Other than just old age.

    SteveH    Posted 02-08-2017 at 22:08:26 [URL] [DELETE]        [Reply] [Email]  
  • Re: Camshaft Gear
  • Unfortunately thats become the reason for my part failures as well.

    Rustyal    Posted 02-08-2017 at 20:58:07 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Camshaft Gear
  • I've seen one with the aluminum type material with a couple broken teeth. Not sure why they fail. Probably just wear out.

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