MSD Pro-Billet Cap & Rotor Wear????

[CHANMADD]

In simple terms,(like the old days) the points need to close at the same time that the rotor lines with the cap.The newer systems don't have points but a rotor like Anthony said above.Shoot me down if you like but today you can buy a FORD HEI distributor and never have any more problems.

[cobred]

The MSD dist. instructions come with a paper telling how to check the phasing Tom is talking about. All you need is a timing light.
I had the same problem with the cap and rotor wear. I bought an a.c. delco brand cap and rotor for a small or big block chevy with points ign. (70 chevelle) So far so good.

[RICK LAKE]

Bunkie I have an FI system and use the distributor as a cam sign for sequiential fuel injection. I used an old cap and grind a slot around the #1 terminal for the plug wire. The slot is about 1" long. This way you can align everything up with TDC, as long as your balancer is also setup for TDC on the groove to the timing mark. This will get the car running and makes it easy to set the timing and look inside and see everything is ok in the housing. Then swap caps and you are good to go. Rick L. You are not going to get zapped as long as you don't put and metal tools inside or around the cap slot.

[Loadco]

If you go to the MSD (Many Suspicious Devices) web site you will find numerous threads about this problem. The MSD techs offer several suggestions for the problem. The most common are bad ground, incorrect rotor phasing and center terminal of the rotor is not in contact with the center terminal of the cap.

The bad ground theroy is easy to eliminate by simply adding another ground directly from the battery to the engine block. Chances are this is not the problem but it is easy to do. Usually if you have a bad ground on the engine you have other associated problems.

Here is their page to check rotor pahsing: http://www.msdignition.com/pdf/tech%...or_phasing.pdf.
On this page they state that every one of their Pro-Billet Distributors are checked for correct phasing during the assembly process at the factory. Again like the ground it is not hard to check but requires destroying a cap and if they do as they say during the manufacturing process this should not be the problem.

So that leaves the last option. The rotor is not manufactured properly and there is a gap between the rotor and center terminal of the cap. This is easy to check by doing some carefull measuring or placing a thin coating of dielectric grease on the tip of the rotor and seeing if it is transfered to the center terminal of the cap.

It just seems to me they should just make the rotor correctly. For the money they demand for their caps and rotors I don't think this would be asking too much. I also wonder why they don't offer a replacable center terminal for the cap. I'm just kidding, if they make this stuff properly or sell replacement parts for the cap they would not be able to rip you off for new caps and rotors every 500 miles.
MSD=Many Suspicious Devices.

[Jamo]

Originally Posted by Loadco

If you go to the MSD (Many Suspicious Devices) web site you will find numerous threads about this problem. The MSD techs offer several suggestions for the problem. The most common are bad ground, incorrect rotor phasing and center terminal of the rotor is not in contact with the center terminal of the cap.

The bad ground theroy is easy to eliminate by simply adding another ground directly from the battery to the engine block. Chances are this is not the problem but it is easy to do. Usually if you have a bad ground on the engine you have other associated problems.

Here is their page to check rotor pahsing: http://www.msdignition.com/pdf/tech%...or_phasing.pdf.
On this page they state that every one of their Pro-Billet Distributors are checked for correct phasing during the assembly process at the factory. Again like the ground it is not hard to check but requires destroying a cap and if they do as they say during the manufacturing process this should not be the problem.

So that leaves the last option. The rotor is not manufactured properly and there is a gap between the rotor and center terminal of the cap. This is easy to check by doing some carefull measuring or placing a thin coating of dielectric grease on the tip of the rotor and seeing if it is transfered to the center terminal of the cap.

It just seems to me they should just make the rotor correctly. For the money they demand for their caps and rotors I don't think this would be asking too much. I also wonder why they don't offer a replacable center terminal for the cap. I'm just kidding, if they make this stuff properly or sell replacement parts for the cap they would not be able to rip you off for new caps and rotors every 500 miles.
MSD=Many Suspicious Devices.

Absolutely.