COOL
Thanks a ton guys for all your input
GREATLY APPRECIATED

 

gap plugs at .040 not .042

IndyD

 

OEM is .040 but for the extra voltage between the coil output and wire resistance .042 runs better.

 

What extra voltage? We didn't recommend the Blaster II *OR* the Accel to get any extra voltage.

If there was extra voltage, why take it away by increasing a gap?

Gap to .040, always.

IndyD

 

Check this out.

OEM runs around 32,000 volts, the MSD is 40,000 volts, and the Accel is 42,000. With that said and the fact that the MSD wires only have 40-50 ohms resistance compared to OEM which is around 500 ohms resistance more heat and spark are generated to the spark plug. The electrode will erode faster due to heat and the full capability of the spark is hindered because it can jump further and better now but the same gap at .040 is set up for OEM spark voltage so all the heat is wasted in the OEM gap. Remember it's mostly the heat not the spark that starts the combustion.

I have done comparisons and have found that the .042 is a better burn and longevity. Went all the way to .045 and found worse quality while .040 was no difference and burned the electrode and fouled plugs. Plug ends won't hit the piston with that gap and also remember that I have shaved heads so I'm even closer. Also, I have done comparisons in other motors for the last 18 years and found the same. This is the reason why I didn't do the .065 as some tech's indicate because I know it doesn't work.

Now if your running OEM leave it at .040 gap as the manufacture states.

 

If you went ahead and spent $12 or so a year on Autolite plugs, you are golden to run them .040 as recommended using the MSD coil and swap the plugs once a year. Zero electrode erosion within that timeline

All the other more costly plug options... you mileage may vary LOL.

IndyD

 

Great idea although which plug are you talking about and at what heat range is it?

 

New to the Durango and to the forum. Love the Durango but it needs a tune up BAD!!! So I have an 01 Durango and I see that you cant use the coil that you suggested (MSD Blaster Coil #8228). Is there one that you do recommend? I can't seem to find a high performance one for the 01 and need to get that. It seems the distributor and wires will be fine but the coil is what I need. Any help would be appreciated!

 

Look up the Napa Echlin

 

Appreciate it, but I can't seem to find the output voltage for it part number ECH IC410. That's the Echlin part number. I was looking for a High Output voltage coil. One like 50000 volt or more output. Just thought I might be able to get some help here in knowing if someone already knew of a good one to use that would work with the 01.

Thanks