MSD ignition packs
#1
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MSD ignition packs
I keep hearing about guys putting MSD 6a packs on their leading coil. Why dont you also have it on the trailing coil, is it dumb/pointless, too much spark??, i dont know. What is a good ignition coil to get, and how many should i get (2 msd 6a's, one leading, one trailing?)
#2
I wish I was driving!
Re: MSD ignition packs
Originally posted by red xeven
I keep hearing about guys putting MSD 6a packs on their leading coil. Why dont you also have it on the trailing coil, is it dumb/pointless, too much spark??, i dont know. What is a good ignition coil to get, and how many should i get (2 msd 6a's, one leading, one trailing?)
I keep hearing about guys putting MSD 6a packs on their leading coil. Why dont you also have it on the trailing coil, is it dumb/pointless, too much spark??, i dont know. What is a good ignition coil to get, and how many should i get (2 msd 6a's, one leading, one trailing?)
The 6A is a CDI box: a capacative discharge ignition. below 3000 rpm, it sends multiple sparks, and above 3000, a single, long lasting spark.
A coil is something completely different. To run coils, you'd need four: two trailing and two leading (although I have heard of MSD's motorcycle coils being used as leading coils).
Some people have run 3 CDI boxes (that's $600!), one for leading, one for each rear trailing plug. This is mostly done in all out race motors, as one method to prevent detonation. Two are required on the rear since they do not have a single igniter (and thus no wastespark, like the front coil).
For you, your best bet would be to run a single CDI box on your stock leading coil.
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Trailing away
Ah, Dah....
I unpluged my "spark plugs" so no one would steal my car while gone on a long trip. Only did one set. Stuffed the wires where no one would notice them.
When I returned I drove the car many times. Went to fill window washer. Heard funny sound. Open hood.
Plug wires pulled from trailing coils were out and stuffed just were I left them. The wires were attached to the plugs but 6 inches away from the coils. The coil ends of the plug wires were sparking against the body.
How could that happen? Induction from the leading wires?
Runs better with training plugs working! But ran OK without them.
Can I save $9 and only replace the leading plugs?
I unpluged my "spark plugs" so no one would steal my car while gone on a long trip. Only did one set. Stuffed the wires where no one would notice them.
When I returned I drove the car many times. Went to fill window washer. Heard funny sound. Open hood.
Plug wires pulled from trailing coils were out and stuffed just were I left them. The wires were attached to the plugs but 6 inches away from the coils. The coil ends of the plug wires were sparking against the body.
How could that happen? Induction from the leading wires?
Runs better with training plugs working! But ran OK without them.
Can I save $9 and only replace the leading plugs?
Last edited by downwinddave; 07-30-02 at 11:30 AM.
#5
I wish I was driving!
Re: Trailing away
Originally posted by downwinddave
Ah, Dah....
I unpluged my "spark plugs" so no one would steal my car while gone on a long trip. Only did one set. Stuffed the wires where no one would notice them.
When I returned I drove the car many times. Went to fill window washer. Heard funny sound. Open hood.
Plug wires pulled from trailing coils were out and stuffed just were I left them. The wires were attached to the plugs but 6 inches away from the coils. The coil ends of the plug wires were sparking against the body.
How could that happen? Induction from the leading wires?
Runs better with training plugs working! But ran OK without them.
Can I save $9 and only replace the leading plugs?
Ah, Dah....
I unpluged my "spark plugs" so no one would steal my car while gone on a long trip. Only did one set. Stuffed the wires where no one would notice them.
When I returned I drove the car many times. Went to fill window washer. Heard funny sound. Open hood.
Plug wires pulled from trailing coils were out and stuffed just were I left them. The wires were attached to the plugs but 6 inches away from the coils. The coil ends of the plug wires were sparking against the body.
How could that happen? Induction from the leading wires?
Runs better with training plugs working! But ran OK without them.
Can I save $9 and only replace the leading plugs?
As for saving $9... Its $9 to help prevent carbon build-up by a more complete combustion. Carbon build-up kills engines. If $9 is too expensive for you, don't replace the plugs at all. For god's sakes, its $9!!
You'd better not have a $800 stereo or any **** like that, and the thing had better be bone stock to comlain about $9.
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I have it on my Honda Civic..It is a Nice ignition..I like it..I have the Msd 6al on my FC...I can't tell the difference..I paid 180 dollars for the Sport Compact ignition and 50 dollars for the 6AL, bought it from a friend...The Sport Compact dosen't have the slot for the Rev Limiter chips....But Msd does make one with the slots I believe...All around I like Msd products...That is all I have ever used...Oh yea Got my Sport Compact ignition from Summit Racing if that helps...
#9
Banned. I got OWNED!!!
Well I run 2 Crane Hi6 (similar to MSD 6A, but better spec) CDI units and two coils for my leading plugs (one on each leading rotor!). This is a bit over the top but the results are well worth it.
Most pros use CDI, it has been used in F1 since the early 80's and realy all race cars without it are just plain loosing power and efficiency, biggest difference on road is the reduction in fuel economy and smooth running compared to transistor ignition (stock)
Most pros use CDI, it has been used in F1 since the early 80's and realy all race cars without it are just plain loosing power and efficiency, biggest difference on road is the reduction in fuel economy and smooth running compared to transistor ignition (stock)
#10
I wish I was driving!
Originally posted by RICE RACING
Well I run 2 Crane Hi6 (similar to MSD 6A, but better spec) CDI units and two coils for my leading plugs (one on each leading rotor!). This is a bit over the top but the results are well worth it.
Most pros use CDI, it has been used in F1 since the early 80's and realy all race cars without it are just plain loosing power and efficiency, biggest difference on road is the reduction in fuel economy and smooth running compared to transistor ignition (stock)
Well I run 2 Crane Hi6 (similar to MSD 6A, but better spec) CDI units and two coils for my leading plugs (one on each leading rotor!). This is a bit over the top but the results are well worth it.
Most pros use CDI, it has been used in F1 since the early 80's and realy all race cars without it are just plain loosing power and efficiency, biggest difference on road is the reduction in fuel economy and smooth running compared to transistor ignition (stock)
#12
I wish I was driving!
Originally posted by seventhgear
SO HAS N E ONE SEEN OR HAVE N E PROOF OF THE SCI ON A 7? n e differences? thanks and sorry 4 the caps
SO HAS N E ONE SEEN OR HAVE N E PROOF OF THE SCI ON A 7? n e differences? thanks and sorry 4 the caps
Unless you are seeing above 10K, then I'd stay with just a normal MSD 6A. If you are exceeding that RPM amount, then you've obviously built a race motor, and should be using something along the lines of 3 DIS's or some digital 7 or up boxes to get the best system.
I recommend the 6A for a rotary, but the SCI would work fine. They would both do the same thing.
#13
Lives on the Forum
Originally posted by seventhgear
has n e one heard of a sci ( sport compact ignition ) made by msd for higher reving engines?
if so how good is that ?
has n e one heard of a sci ( sport compact ignition ) made by msd for higher reving engines?
if so how good is that ?
-Ted
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