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Thread: MFI thermostat mounting on a 69's 911E

  1. #11
    Quote Originally Posted by 2.5MFI View Post
    The rod will have no problem extending in all the way. The 25 pair of thermo disc's will do the job even if you remove a few more shims.
    We were able to adjust the part-load mixture screw but unfortunetly the idle mixture screw seems to have no effect when we try to turn it.
    So the car is still rich at idle even if we turn the screw counter clockwise (we don’t feel the click).
    I think we’ll have to open the pump to check what’s going on with that idle adjustment screw….

  2. #12
    It may be turned beyond the range of the steel springs that provide the "click" feel. Try turning it clockwise and if it doesn't get back between the steel spring.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.

  3. #13
    Quote Originally Posted by edmayo View Post
    It may be turned beyond the range of the steel springs that provide the "click" feel. Try turning it clockwise and if it doesn't get back between the steel spring.
    Thanks, you think it may get back "in force" between those 2 steel springs ?

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  4. #14
    It appears that the hex is between the springs. That idle setting screw should have had some effect. Maybe you didn't have the tang engaged even tho you thought you did.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.

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