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  1. #1
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    Achievements Checkered FlagWide Open ThrottleBurning TiresStepping on the GasBuckling Up

    Default Timing at idle ?

    I have the initial timing at 17* but the timing with vacuum line connected is 35*. What problems can happen to the engine with this condition?

  2. #2
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    Achievements Checkered FlagWide Open ThrottleBurning TiresStepping on the GasBuckling Up

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    I switched out the old vacuum canister for an adjustable one. I adjusted it from 35* to 29.5*. My initial timing is still 17* and total advance is still 35*. I plan a road test later today.

  3. #3
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    Achievements Checkered FlagWide Open ThrottleBurning TiresStepping on the GasBuckling Up

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    I took a trip and the throttle was sluggish from a stop. I took it back home and adjusted the fuel air screws. While there I decided to lower the timing on the vacuum canister. I lowered it to 24*. The initial is still at 17* and total advance is still 35*. It is still a tad sluggish from a stop. Other than that, it ran very well and didn't heat up. I may try lowering the canister vacuum more unless someone could give me an idea how to fix the tuning problem.

  4. #4
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    Achievements Checkered FlagWide Open ThrottleBurning TiresStepping on the GasBuckling Up

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    I have had an interesting thing happening when I check the initial timing. I pull the vacuum line from the canister and plug it with a golf tee. I get my 17* reading. The engine is running rough, but when I unplug the vacuum line the engine smooths out and when I reattach it to the vacuum canister it smooths out more. Any comments?

  5. #5
    Known Member Motorhead's Avatar
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    Achievements Checking the GaugesKicking the Tires

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    Doesn't sound quite up to " par "
    Sorry but a little " birdie " told me to say that

    OK ... enough golf tee jokes for the moment !!!


    Quote Originally Posted by 78 elk View Post
    I have had an interesting thing happening when I check the initial timing. I pull the vacuum line from the canister and plug it with a golf tee. I get my 17* reading. The engine is running rough, but when I unplug the vacuum line the engine smooths out and when I reattach it to the vacuum canister it smooths out more. Any comments?

  6. #6
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    Achievements Checkered FlagWide Open ThrottleBurning TiresStepping on the GasBuckling Up

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    A little fun is great, thanks.

  7. #7
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    Achievements Checkered FlagWide Open ThrottleBurning TiresStepping on the GasBuckling Up

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    I learned today that the idle timing is high due to my switching from ported to manifold vacuum. It runs better on manifold vacuum than ported vacuum.

  8. #8
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    Achievements Checkered FlagWide Open ThrottleBurning TiresStepping on the GasBuckling Up

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    I need to apologize for not explaining the rattle sound is from the roller rockers when the engine isn't getting enough vacuum for the big cam.

  9. #9
    Known Member Francis Steele's Avatar
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    Achievements Checkered FlagWide Open ThrottleBurning TiresStepping on the GasAt the Starting Line

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    Listen for ping or knock if you hear none may be ok. Ping will often occur under load passing going up a hill etc.

  10. #10
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    Achievements Checkered FlagWide Open ThrottleBurning TiresStepping on the GasBuckling Up

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    Thanks Francis. So far it hasn't did that at all.


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