I just installed a new MSD Blaster 2 coil on my '89 FJ62 as per reccomendations on this forum.
My idle speed has gone up 50 rpm to about 675 and is smoother now! And yes, there is definitly more power - just a hailr more, but it's dicernable. The original coil has 180,000 miles.
I experimented with Jacobs coils on 60's and nver saw anything like this. Very cool!
I have had a Jacobs Omni Pak Coil for the last couple of years on my 60. Which coil did you try of the Jacobs coils? It seems to work good. I noticed it idled better at cold starts. I have to set the spark plug gap at .007"more than the stock gap.
Did you have to increase the spark plug gap with this MSD blaster coil?
I have had a Jacobs Omni Pak Coil for the last couple of years on my 60. Which coil did you try of the Jacobs coils? It seems to work good. I noticed it idled better at cold starts. I have to set the spark plug gap at .007"more than the stock gap.
Did you have to increase the spark plug gap with this MSD blaster coil?
I got mine on eBay. Quite poetic actually: I read a few folks positive experiences with them on this forum, then went to eBay and typed the name in. Sure enough there was one listed, brand new in packaging. I paid $15 + 5 shipping
I've since seen them at Checker stores for about $38
These high energy coils can iprove mileage, due to improving combustion efficiency.
But I doubt you'll ever notice the improvement in a tank. We're talking hundredths of a gallon
here. If you're going to swap to one of these coils, do it for the improved idle and better
emissions.
Now, if I have to replace my coil before I eventually do my diesel swap, I'm going with MSD.
All the benefits mentioned above, plus a rev limiter.
Did you go with the stock spark plug gap with this coil? Does it tell you in the manual to run any other gap besides stock? Did it directly bolt in to the same stock mount with no rewiring? I am thinking about going back to stock gap with one of these coil instead of my Omni coil with plugs gapped it .050 or more.
Same here. But I gapped mine .02 over, to about .05, per Jacob's recommendation. I questioned it, but they were right. Starts WAY easier and idles way better. I upgraded to their plug wires as well, cut to size by Man-a-Fre (I think I ordered from them). Anyways, any ignition upgrade from stock should help. Mine was well worth it. Question though....did you guys leave the igniter on...you know, the little silver box that was mounted above the orginal coil? I left mine on becasue I didn't know if taking it off would be okay, and neither did Jacob. They said to leave it on because it wouldn't hurt or help the system. Comments on that? Should I take it off, or leave it?
Question though....did you guys leave the igniter on...you know, the little silver box that was mounted above the orginal coil? I left mine on becasue I didn't know if taking it off would be okay, and neither did Jacob. They said to leave it on because it wouldn't hurt or help the system. Comments on that? Should I take it off, or leave it?
I left my old coil mounted so if something happened with the jacobs coil I could switch back easily. I see no reason to leave the igniter in if it is not hooked up to any wires. To plug in the Jacobs, I took the two wires off the coil and one green connector I unplugged so my tach would read. I gapped mine at like around .05 too. I am wondering now if all this juice is getting to the plug. I am going to check out my distrubutor. I wondering if the higher voltage wears it out. I am thinking about going with a MSD coil that will mount right where he stock one is to free up some room for my ARB compressor. Also the MSD coil, recommends like .007-.010 over stock from what I read yesterday. I have always wondered if a bigger spark would cause the engine to run hotter. It seems like you would get to a point if you keep making the spark bigger where it would not help but do more harm (heat up engine?). I kinda like the idea of .032+.007 with a MSD coil but I am going to read up on it more.
I left my old coil mounted so if something happened with the jacobs coil I could switch back easily. I see no reason to leave the igniter in if it is not hooked up to any wires. To plug in the Jacobs, I took the two wires off the coil and one green connector I unplugged so my tach would read. I gapped mine at like around .05 too. I am wondering now if all this juice is getting to the plug. I am going to check out my distrubutor. I wondering if the higher voltage wears it out. I am thinking about going with a MSD coil that will mount right where he stock one is to free up some room for my ARB compressor. Also the MSD coil, recommends like .007-.010 over stock from what I read yesterday. I have always wondered if a bigger spark would cause the engine to run hotter. It seems like you would get to a point if you keep making the spark bigger where it would not help but do more harm (heat up engine?). I kinda like the idea of .032+.007 with a MSD coil but I am going to read up on it more.
On my rig, the igniter is hooked up. If I remember correctly, the wires go from the green plug harness to the igniter, and then to the coil. I just switched the coils, so the igniter is hooked up. To use the harness and, wouldn't you have to make your own leads from the green connector straight to the new coil, bypassing the igniter. If you just switch them, the igniter is still hooked up?
