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Subject: 1950 Ford 8n Funk 6 cyl

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Steven Dyer    Posted 06-12-2020 at 23:35:12 [URL] [DELETE]        [Reply] [Email]  
  • 1950 Ford 8n Funk 6 cyl
  • im having a problem getting this thing to start, im trying to verify that it is timed correctly
    If i bring number 1 cyl up to top dead center.
    When i remove the dist cap Should the rotor be pointed to #1 plug wire on the cap?

    2nd question is does anyone kno if the funk 6 cylinders had fuel pumps or were they gravity feed from tank?

    Steven    Posted 06-17-2020 at 22:57:47 [URL] [DELETE]        [Reply] [Email]  
  • Re: 1950 Ford 8n Funk 6 cyl
  • ok i did compression check results
    #1= 28, #2=0, #3=0, #4=0, #5=60, #6=55

    thinking back to when i had the cylinder head off the valves had quite a bit of rust pitting around were the valve meets the block im wondering if thats how its loosing its compression rather then the rings.
    ive never even attempted to work on a engine that wasnt over head valve.
    how hard is it to replace a valve on one of these?

    KCM    Posted 06-18-2020 at 22:15:42 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 1950 Ford 8n Funk 6 cyl
  • Noticed there are three with 0 compression. The old flatheads are notorious for valves that stick open if the engine has sat for some time. Not much oil gets up to the valve guides to keep them lubricated like an overhead valve engine. They will open but the spring force is not enough to close them due to rust and other build-up. You can take of the valve covers on the block behind the exhaust manifold to gain access to the springs to get them lubed and moving. You can also stick a screwdriver through the spark plug hole to push the valves down if they are not stuck too bad. Otherwise you can pull the head again.

    #5 and #6 could simply be due to dry cylinders. A few squirts of oil in the cylinders will boost compression, and the pressure will increase once the engine starts and cylinders get lubed.

    #1 might also benefit from some oil, but might also be due to the valves not sealing properly. Would not worry about it till you get the engine started, then you can recheck the compression.

    Not sure how bad the pitting is, but I suspect you should be able to get it running before condemning the valves. If they do need to be ground or replaced, they are removed by removing the cylinder head and side valve covers, then removing the springs in a conventional method. The valve seats in the block should be ground as well, which is done with the old style valve seat grinding tools.

    steven    Posted 06-18-2020 at 23:00:44 [URL] [DELETE]        [Reply] [Email]  
  • Re: 1950 Ford 8n Funk 6 cyl
  • KCM
    thanks for the info.
    I removed and cleaned out the intake but i never touched those valve covers so i will defently give that a shot...
    do you happen to kno what the compression should be on this engine to atleast run?
    thanks again for the help.
    i will post follow up in a few days.

    KCM    Posted 06-22-2020 at 12:49:50 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 1950 Ford 8n Funk 6 cyl
  • Compression could be anywhere from 80 to 120 psi, with around 100 being the norm. Depends on the condition of the engine. I would think it should still run at 60, but the oil in the cylinder trick will boost it up. Once the engine is running and everything is lubricated and the piston rings get reseated, I think you'll find the pressure up to at least 80 psi. Don't worry to much about the pressures. If it starts and runs good, and doesn't emit blue smoke from burning oil (which it may for a little while until the rings reseat), then you're golden.

    KCM    Posted 06-16-2020 at 18:21:58 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 1950 Ford 8n Funk 6 cyl
  • Sounds like your #1 question was answered sufficiently. An easy way to tell if it is on compression stroke is to take out the spark plug and put your finger over the hole while you turn the engine. You will feel the pressure when it is coming up on compression. As for #2, yes and yes. Depending on how they were installed, a mechanical fuel pump could be used or they can simply be gravity fed without the pump.

    steven    Posted 06-19-2020 at 21:44:33 [URL] [DELETE]        [Reply] [Email]  
  • Re: 1950 Ford 8n Funk 6 cyl
  • well KCM, you were 100% correct on the valves staying open.
    i removed the 3 covers and to my suprise it was spotless no rust or sledge of any kind. but sure enuf when i cranked it over the valves were staying open. exactly as you said, the spring isnt pulling the valve back down.
    i havent attempted to lubricate them yet.
    i wanted to ask you first if theirs a special lubricant you recommend or will just reg motor oil work?
    thanks again for the input!..... i was starting to get discouraged with this tractor. almost ready to give up.

    KCM    Posted 06-22-2020 at 12:41:06 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 1950 Ford 8n Funk 6 cyl
  • Start with WD-40 or equivalent, then follow with a liberal amount of motor oil. You will probably need to work them up and down a few times to free them up. They may stick again after you start it, but then you can push them back down through the spark plug hole.

    Dean    Posted 06-13-2020 at 07:44:04 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 1950 Ford 8n Funk 6 cyl
  • The #1 cylinder must be on the compression stroke rather than the exhaust stroke in order for the rotor to point to the #1 distributor cap tower. If it is pointing 180 degrees out, the cylinder is probably on the exhaust stroke. Turn it one more revolution and look again.

    The Ford 6 cylinder engine used in Funk conversions was an industrial engine and was equipped with a fuel pump.


    steven dyer    Posted 06-13-2020 at 08:13:43 [URL] [DELETE]        [Reply] [Email]  
  • Re: 1950 Ford 8n Funk 6 cyl
  • dean thanks for the info.
    what your saying sounds likely, as its backfiring threw the carb when i crank it over.
    and 180 out would defently do that.

    TheOldHokie    Posted 06-13-2020 at 08:42:19 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 1950 Ford 8n Funk 6 cyl
  • Before jumping to conclusions VERIFY you are on the compression stroke.


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