Old topic, but I'm extremely curious if all you needed was the jeep distributor to make dis possible, or do you still need a crank sensor too?Originally Posted by EagleMark
I'm asking because I have an old 60° v6 iron heads that I would like to run dis, but it has no factory provisions. (Currently Stock fiero gt motor running 7730 w/dizzy)
What about building a 7 notch wheel for the front of the crank?
This^^^
If you tried to use a dizzy to create the needed crank signal, you would actually need to create a 14x wheel, with two offset notches, in order to have proper timed signals, due to the cam rotating at half the RPM of the crank. As factory installed, the 660 DIS system uses a 7x wheel (6 equally spaced notches and 1 offset by 10 degrees for a home signal).
There have been various ways that people have made the crankt triggers on engines that do not have them. I've made an external trigger wheel that attaches to the front of the harmonic dampner for a couple of mine.
On my 1985 GMC Jimmy, that I built a turbo hybrid for. This used a 2.8L block, so it didn't have crank trigger sensor provisions, even though the crank I installed, a FWd 3.1L unit, had the notches.
I used the same wheel with some modifications and new sensor mount when I installed the DIS system on my Nissan I6:
I'm now using this same trigger wheel and modified teh original mount to fit on my current LX9 (3500).
The man who says something is impossible, is usually interrupted by the man doing it.
I'm asking because I have an old 60° v6 iron heads
Hmmm... are you talking about this?
Or this:
Top one, in a fiero. Came with ho big valve heads from factory. If opened up, runs very strong and had good torque. Of course, all measurements are made seat-of-pants.
The HO engines in the X11 cars were kind of fun to drive. Too bad GM bailed out on 'em.
I think the citation had an x11 that never turned heads but blew away anything close to it in class? I might be remembering that wrong.
Yes. I'm thinking why not simply install a second reluctor on top the first one and "star" the reluctor wheel on the dizzy to accomplish the doubled up whacks?
That won't work...
You REALLY need to look at what makes the DIS system tick, to understand just how important it is to get the correct trigger wheel made and working.
The man who says something is impossible, is usually interrupted by the man doing it.
Yep... "double pulses" is not the way to go. The original 60 deg V6 DIS wheel looks like the one Six_Shooter posted previously.
It turns at crank speed where the distributor turns at 1/2 crank speed, so you'd have to make a wheel with 14 notches instead of 7 and they'd have to be mirror images of each other. Here's a good description under "Magnetic CKP." https://books.google.com/books?id=0S...0notch&f=false
14 signals on the dizzy is what I was trying to accomplish. Seems easier than swapping cranks. But then again, 15 minutes to swap out a balancer sounds easy too. Dang! Thought i was on to something!
Sooo......what you're trying to say is... there's a reason it hasn't been done. ;)
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