Topic: couple of questions about different performance products for jeep

[countryboy15]

your msd is more than you need, imo you should save your money and keep that one. if you end up buying the PD kit i might be interested in buying the msd one from you.

I am defintiely going to buy the livewires spark plug wires and maybe distributor cap &rotor kit. The MSD thing is just the coil pack and you are proably right about keeping the msd igniton coil. If you are interested in The MSD ignition, I seen some MSD igniton coils and ignition systems at my local autozone and they look just like what I have on my jeep. I think the previous owner did some rigging to wire it up (I think its the the blaster 2 coil). (Another Plus for autozone is they have that customer reward system, that gives you a free $20 for every $100 you spend at their store)

[FourbangerYJ]

I am defintiely going to buy the livewires spark plug wires and maybe distributor cap &rotor kit. The MSD thing is just the coil pack and you are proably right about keeping the msd igniton coil. If you are interested in The MSD ignition, I seen some MSD igniton coils and ignition systems at my local autozone and they look just like what I have on my jeep. I think the previous owner did some rigging to wire it up (I think its the the blaster 2 coil). (Another Plus for autozone is they have that customer reward system, that gives you a free $20 for every $100 you spend at their store)

The PD coil lets you gap the plugs to .065. They said to get some Autolite so that's what I got.
Not sure what the MSD coil allows you to open the gap to.

[countryboy15]

I checking on the specs through an email to PD. The specs I am talking about is the Coil Specs

This is the MSD coil specs which I have in my jeep already
Turns ratio: 100:1
Primary resistance: .7 OHMs
Secondary resistance: 4.5K OHMs
Inductance: 8 mH
Maximum voltage: 45,000 Volts
Peak current: 140 mA
Spark duration: 350 uS

[countryboy15]

I checking on the specs through an email to PD. The specs I am talking about is the Coil Specs

This is the MSD coil specs which I have in my jeep already
Turns ratio: 100:1
Primary resistance: .7 OHMs
Secondary resistance: 4.5K OHMs
Inductance: 8 mH
Maximum voltage: 45,000 Volts
Peak current: 140 mA
Spark duration: 350 uS

PD igntion coils all are rated at 45000 volts under load.


I am definitely keeping my MSD coil since itegual to all PD coils for a jeep, but note I am going with the livewires because of the fact that they are 10mm wires. Thanks on the advice on these.

[Sine Deviance]

I'm not a fan of performance enhancer products cause most of doesn't really work...
They are only good at advertisements that will make you believe that it is effective but its not...

Spark is spark. One ignition system doesn't produce a better spark than the next ignition system. Some just do it faster, more predictably, and with better timing.

I wouldn't exactly say that MSD is misleading people. It's not going to add horsepower on it's own but it will allow you to get your engine tuning and timing much more exact, which could add horsepower.

[Jeffy]

There are other tricks one can do to take advantage of hotter coils.  Widening the gap will cause a larger spark which will help in a more efficient combustion.  I believe MSD uses multi-sparks so the spark duration is longer to help scavenge more HP.  Clipping the spark plug electrode is also an old trick.  Then there is indexing the spark plug so the open end of the spark plug is facing the valves...

[dwtaylorpdx]

No matter who's ignition box you buy, most can do multi-spark to 3500 rpm max.

I've O-scoped the stock coil system and then we swapped out 3 other boxes and coils
and none of them gave a substantial change(power wise), but all the multi sparc systems
idled better and had better cruising manners. (MSD, Crane, Jacobs) At crawling speeds
they seem to help response.

Too much spark can be a bad thing, it can arc to the piston top if you go too crazy...
Bad things happen if this occurrs...


Dave

[Green97TJ]

I installed the PD setup yesterday on my TJ. The thing was popping and bucking like it was running really lean. I pulled the plugs and re-gaped them to .040 and it ran better no popping... But I did a search on here for running lean. I found out the spedo needed re-calibrated after the bigger tires were put on. I knew it was off about 1 mile in every 6.5 as thats how far it is home from the gas station I've been getting gas at for about 30 years...
 So I ordered up my new gear and will re-gap the plugs again... So the coil and everything does burn the gas better, as it wasn't way to lean until after I gaped the plugs. It did pick up power under full throttle, it just wouldn't cruse without popping... also put on my 4.0 TB today, so after I get my gear in it might just make some power...
 I knew the hotter coil setup would work as I've been doing that to my HD's and cars for about 40+ years...