Ignition distributor collar: Are they needed?

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    Author Topic: Ignition distributor collar: Are they needed?  (Read 1975 times)

    Offline Topcat

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    Ignition distributor collar: Are they needed?
    « on: December 27, 2014 - 11:57:53 AM »
    Is this more needed for points?
    Or does it help with electronic distributors as well?

    Anyone use one?
    Did it help or improve firing?

    http://www.ebay.com/itm/Mopar-Distributor-Collar-Stops-Misfiring-and-Spark-Scatter-340-426-Hemi-440-/221643690178?pt=Vintage_Car_Truck_Parts_Accessories&hash=item339afe50c2&vxp=mtr#ht_926wt_662
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    Mike, Fremont, CA.



    Offline cudabob496

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    Re: Ignition distributor collar: Are they needed?
    « Reply #1 on: December 27, 2014 - 07:03:26 PM »
    distributor drive gear bouncing up and down, for which this compensates, just seems to be
    the result of a poorly designed or poor quality distributor.
    « Last Edit: December 27, 2014 - 07:26:27 PM by cudabob496 »
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    72 Cuda, owned 25 years. 496, with ported Stage VI heads, .625 in solid roller, 254/258 at .050, 3500 stall, 3.91 rear. 850 Holley DP, Reverse manual valve body.

    1999 Trans Am, LS1, heads, cam, headers, stall, etc! Love to surprise the rice rockets with this one. They seem so confident, then it's "what the heck just happened?"

    2011 Kawasaki Z1000

    Offline Topcat

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    Re: Ignition distributor collar: Are they needed?
    « Reply #2 on: December 27, 2014 - 08:27:03 PM »
    I also thought earlier that it might be needed if the oil pump gear starts walking up out of it's mesh as engine speed goes up. The added collar weight would help prevent that from happening.

    Is that a possibility for it as well?
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    Mike, Fremont, CA.

    Offline cudabob496

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    Re: Ignition distributor collar: Are they needed?
    « Reply #3 on: December 27, 2014 - 08:29:30 PM »
    Quote from: Topcat on December 27, 2014 - 08:27:03 PM
    I also thought earlier that it might be needed if the oil pump gear starts walking up out of it's mesh as engine speed goes up. The added collar weight would help prevent that from happening.

    Is that a possibility for it as well?

    people smarter than me may know, but sure seems like putting a bandaid
    on a more serious problem.
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    72 Cuda, owned 25 years. 496, with ported Stage VI heads, .625 in solid roller, 254/258 at .050, 3500 stall, 3.91 rear. 850 Holley DP, Reverse manual valve body.

    1999 Trans Am, LS1, heads, cam, headers, stall, etc! Love to surprise the rice rockets with this one. They seem so confident, then it's "what the heck just happened?"

    2011 Kawasaki Z1000

    Offline Topcat

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    Re: Ignition distributor collar: Are they needed?
    « Reply #4 on: December 27, 2014 - 08:36:11 PM »
    I'm going to e-mail Don over at FBO.com and see what he has to say about these.

    I recently bought his mechanical advance plate from him.

    Some really good info he has on ignition set ups.
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    Mike, Fremont, CA.

    Offline Moparal

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    Re: Ignition distributor collar: Are they needed?
    « Reply #5 on: December 27, 2014 - 08:42:40 PM »
    If your cam end play is more than .003 .004  then it has a tendency to push the drive up and cam towards the cover.  Put it on bandaide or not, it will def help and also stabilize the timing
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    Offline Katfish

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    Re: Ignition distributor collar: Are they needed?
    « Reply #6 on: December 27, 2014 - 08:57:26 PM »
    Curious too, bought 1 at Tractor Supply, haven't put it in yet.
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    Offline Topcat

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    Re: Ignition distributor collar: Are they needed?
    « Reply #7 on: December 28, 2014 - 03:44:54 PM »
    Don at FBO.com replied:

    If the distributor is set up correctly there shouldn't be any need for whatever that thing is?
    I have no idea what he's talking about and doesn’t give any info as to what it is or how it’s supposed to work?

    Quote from: Moparal on December 27, 2014 - 08:42:40 PM
    If your cam end play is more than .003 .004  then it has a tendency to push the drive up and cam towards the cover.  Put it on bandaide or not, it will def help and also stabilize the timing

    Thanks Al.

    Would cam end play be more aptly prone on a higher milage engine?

     

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    Mike, Fremont, CA.

    Offline Moparal

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    Re: Ignition distributor collar: Are they needed?
    « Reply #8 on: December 28, 2014 - 04:30:28 PM »
    Yeah, like a very loose chain, worn bushing and distributor drive.  A tight chain is less apt to let it wander same with bronze bushhing and drive gear.  Some install a button on the front of the cam to keep travel down. All this is considering your distributor is in good shape.   :wave:
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    Offline Topcat

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    Re: Ignition distributor collar: Are they needed?
    « Reply #9 on: December 28, 2014 - 05:34:04 PM »
    Quote from: Moparal on December 28, 2014 - 04:30:28 PM
    Yeah, like a very loose chain, worn bushing and distributor drive.  A tight chain is less apt to let it wander same with bronze bushhing and drive gear.  Some install a button on the front of the cam to keep travel down. All this is considering your distributor is in good shape.   :wave:

    Right now I'm using the distributor you sold me. It's working good.
    I plan to switch over to Electronic once I set it up with the FBO plate.

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    Mike, Fremont, CA.

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