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Subject: Exhaust chirps?

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Rusty 2N    Posted 07-28-2018 at 18:25:05 [URL] [DELETE]        [Reply] [No Email]  
  • Exhaust chirps?
  • My '50 8n, 12V has chirping noise. Poor distressed bird... All rpms.
    Week valve spring? Burnt valve? Air leak some where? Dist timing? Carb adjustment?

    Farmer Dan    Posted 07-29-2018 at 10:12:29 [URL] [DELETE]        [Reply] [Email]  
  • Re: Exhaust chirps?
  • My educated guess would be a valve not seating 100%. Try lapping the valves (all of them). That should establish a good seal again and get rid of the funny noises.

    Tim Daley(MI)    Posted 07-30-2018 at 04:38:25 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Exhaust chirps?
  • My WAG too was a valve sticking. Not unusual and no big concern either.

    Tim Daley(MI)

    Dean    Posted 07-28-2018 at 23:05:17 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Exhaust chirps?
  • Diagnosing an engine problem in a chat forum from a description of a sound is little more than an educated guess.

    That said, I would guess a burnt exhaust valve.

    Take a compression test.


    Rusty 2N    Posted 07-28-2018 at 23:50:09 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Exhaust chirps?
  • I agree with you, hard to do, impossible even. Was just hoping some one had run across this before.
    Compression is good. I will keep tweeking with it and see what happens. Thank you for your time.

    BlasterStumps    Posted 07-28-2018 at 20:30:45 [URL] [DELETE]        [Reply] [Email]  
  • Re: Exhaust chirps?
  • Can you make yourself a stethoscope so that you could listen to different parts of the engine to see where it is coming from. I use a very long screwdriver held up to my ear and touch the point of it to the block or wherever I want to listen to.

    Rusty 2N    Posted 07-28-2018 at 21:49:13 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Exhaust chirps?
  • Noise is in the exhaust. Sounds like it blows through a whistle.

    Jerry    Posted 07-30-2018 at 09:45:58 [URL] [DELETE]        [Reply] [Email]  
  • Re: Exhaust chirps?
  • You can buy one of those at harbor freight for $4.

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