Okay, my SH motor had a distributor which has an output for an external ignition coil. When I got my Type-S swap, the distributor on that motor has an internal ignition coil and does not have the output for the external ignition coil.

I noticed that the Type-S distributor has more wires coming out of it than the SH one. I'm guessing because of the internal ignition coil. I'm guessing the extra wires coming out of the Type-S distributor are the same wires as the ones coming out of the external ignition coil on the SH.

What I Wanted to do was take the Type-S distributor cap off and put the SH distributor cap so that I can attach the MSD Blaster External Ignition coil. Will this trip up my computer considering that the Type-S internal ignition coil won't be used anymore?

I noticed that in the design of the SH distributor cap that the center of the cap has an extension downward and ends with a plug for the external ignition coil, while for the Type-S, it looks as if there is an extension out of the center of the distributor cap and also extends downward, but as it reaches where the SH has a plug, it shoots back into the distributor towards the internal ignition coil.

Anybody have any idea?

 

Swap the entire dizzy!

 

My question is why, the stock ignition is plenty enuf for a SH, not only that but you cant get more than 250 whp before the atts disables itself. 250hp is way within the stock ignition. Also with all the problem posts about people running the MSD ignition I would just stick with stock and call it a day.

 

Hmmmm, good advice. Yeah, in this case I wasn't upgrading the Coil for power but for efficiency. I recently upgraded to NGK Irridium spark plugs and 10.5mm wires and I'm now getting 31mpg on highway. Before the upgrade I was getting 28mpg, and the plugs were also Irridium plugs and with only 30k on them.

I just figured the bigger spark from the new plug helped the combustion. I looked at the distributor's rotor and notice that it was black only on the leading end of the rotor and not all the way across. Thought it might be because of the shitty stock coil. Ideally, each piston should spark for 20 degrees of rotation and with only half of the rotor being blackened, I figured it was only sparking for 10 degrees.

I figured with a larger coil, I could get it to burn all the way across.