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Thread: Exhaust cutout - suggestions to force shut

  1. #1
    Fuel Injected! Terminal_Crazy's Avatar
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    Exhaust cutout - suggestions to force shut

    Good evening everyone.
    Iíve just uncorked my exhaust cutout this evening.(Jegs electric)
    However it wonít stay completely shut.
    Closing it lasts a few seconds and then it opens a tiny amount.

    Iíd thought of biasing the control wire to feed a small current to the motor to hold it closed.
    Any thoughts if this might work without burning out the motor.
    Any other ideas?

    Mitch
    '95 Z28 M6 -Just the odd mod.
    '80 350 A3 C3 Corvette - recent addition.

  2. #2
    Fuel Injected!
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    I've seen a trick done using a light bulb to supply power to the motor. It will be a low enough resistance when not lit to move the motor but change to a high enough resistance to current limit and avoid damage to the motor. I would start small and work up to bigger bulbs until it works to open and close with the bulb left in circuit all the time.

  3. #3
    Fuel Injected! Terminal_Crazy's Avatar
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    Thanks.
    I’m kicking around a couple of thoughts on it now.

    Mitch
    '95 Z28 M6 -Just the odd mod.
    '80 350 A3 C3 Corvette - recent addition.

  4. #4
    Fuel Injected! CDeeZ's Avatar
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    What did you end up doing for this?

    I ran several types/brands of cutouts in the past. ALL of them were leaky except the DMH cutouts I used last.

  5. #5
    Fuel Injected! Terminal_Crazy's Avatar
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    I tried a few resistors and 470ohm would still just operate the motor.
    I was thinking a bit less power through it would hold it closed.
    It seemed to work with a 1k pot I found in my parts bin.
    I think need to replace the 5 pin switch that comes with the cutout to a 6 pin dpdt and add a pair of diodes so it will supply a small leakage when in the off position.
    I haven’t thought this through yet ��

    Mitch
    '95 Z28 M6 -Just the odd mod.
    '80 350 A3 C3 Corvette - recent addition.

  6. #6
    Fuel Injected!
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    Did you try the light bulb? It works. Motor will close then bulb comes on which supplies a little current to the motor that keeps it closed.

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