Buy PerTronix 91281 Ignitor II Adaptive Dwell Control for Ford 8 CylinderPerTronix 91281 Ignitor II Adaptive Dwell Control for Ford 8 Cylinder Product Description:
- Adaptive dwell maintains peak energy throughout the entire RPM range, reducing misfires while improving engine performance
- Develops on average 4 times more available energy between 3000 and 5000 RPM, and 2 times more available plug voltage
- Compensates for inherent electronic delay by adjusting the spark timing throughout the entire RPM range
- Synchronized peak current and spark timing reduces heat build-up
- Senses startup and develops more energy for quicker, easier starting
Product Description
The Ignitor II has many of the same great features that the Ignitor has, but its smarter. Ignitor II units sense the coil current level and use a powerful micro controller to adjust the dwell. Variable dwell helps to maintain peak energy throughout the entire RPM range. Ignitor II systems develop up to 4 times more energy between 3000 and 5000 RPM than standard ignition systems. High RPM performance is improved when used with the Flame-Thrower II super low resistance 0.6 ohms and 45,000 volt coils.
Customer Reviews
Most helpful customer reviews
2 of 2 people found the following review helpful.
New life to old engines
By Morgen C. Sharp
I'm not a gear head. Don't have a shop full of once-in-a-blue moon tools. I can change my plugs and fiddle with my carb- that's about it. But I have a 70' Ford F-100 with a 360 engine and I love my truck...way more than mechanical knowledge can express. Luckily, some awesome nerds got together some time ago and figured out a way to implement more modern firing and timing systems into the existing distributor.My experience with this product came as result of nearly having my ears blown off when my truck backfired. Everyone in the neighborhood ducked, getting up slowly to look around. I knew something was up before this happened. My truck had been having very rough acceleration. I thought/hoped it was my carb (cause I can mess with that). After some fiddling and the neighbors ducking a couple more times I finally found a mechanic who would answer my questions- turned out...duh, my points are off.Now I grew up with cars that were quiet and smooth and didn't have any of this points business. So naturally...I had no idea how to change them...or honestly how they worked. But I do know how to do math. My points were last set about a year and a half ago. It cost me about [...] bucks. I had seen the pertronix products in the LMC trucks catalogs. I figure if they improve my fuel economy/horsepower and give me smoother and more even acceleration response AND I can skip the trip to the mechanic every year then why not try them out. I also bought the flame thrower II (it's recommended). Total cost $[...].Install was really easy, although the instructions could have used some more diagrams and to have been a little more comprehensive/thorough. I guess they figure everyone who buys these products knows every inch of their truck...well not me and I wasted valuable minutes of my life pondering a few phrases. The only weird thing to watch in my particular install was that the starter wire goes on the left of the ignition coil now instead of the right. I already had premium bosch spark plugs...if you don't I highly recommend them. Also if you install this product you can play with your carb to make the mix a little leaner/thicker if you want. I would also adjust the idle while you're at it...my idle rpms jumped substantially from the added punch and precise timing.The end result has been fantastic. I feel like I have a brand new truck. It's so responsive through the whole rpm cycle. Reduced vibration. Improved fuel economy (very slight). But the performance is a huge improvement. I wish I had done this when I first bought my truck three years ago. Most people know some of the best money spent in improving a vehicle is done in the firing chain. This product is perfect example of that. It's given me the best driving experience my truck has likely offered in decades. Best of all my neighbors no longer cowar in fear when I drive by but instead wave and smile.
0 of 0 people found the following review helpful.fantastic
By Amy L. West
So far, this is working great. Idle seems smoother and a bit more quiet. It's very easy to install and there are a ton of videos out there both by Pertronix and by users. Make sure the black wire goes to negative/dist and red goes to positive/batt on your ignition coil. Red needs full power all the time so if you have a resister wire or ballast resister to your coil, you need to by-pass that for this red lead. If you stay with the stock coil then nothing changes there.If you replace the coil with a Flame-Thrower or other coil that requires 12v all of the time, then ditch the resister wire completely. Consider widening the plug gap a touch. I have a '67 Ford F100 and Pertronix recommended increasing plug gap .007.
0 of 0 people found the following review helpful.PerTronix 91281 II
By DJRebel2
Installed this on my 1957 T-Bird 312ci eng. Worked so good , I am going to put one on my 1956 Lincoln 368ci eng.
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