Distributerless Ignition possiblity.. (working on it)

turbodig

turbodig

Active member
Re: Distributerless Ignition possiblity.. (working on it)

sytyguy said:



Click for larger pic.

Not the best pics I've ever taken, but they should help. The 4th pic shows a wrench in between the cover and balancer.....it was a tight fit and measured out at about .300 thick.

Note - this was a spare block I had from a '90 Blazer.....balancer & cover too.

Hood
Click to expand...

Good stuff, Maynard.

It still leaves us back at modifying the balancer, or finding an alternate crank pulley.

Does your parts book show any reasonably-priced balancers that don't have that ring in back?
 
turbodig

turbodig

Active member
Re: Distributerless Ignition possiblity.. (working on it)

MikeRenz said:
so just have 2 triggers
Click to expand...

It needs 7 pulses each crank rotation. Tough to make that work out, as you can't 1/2 a pulse.
 
M

MikeRenz

not stock
Re: Distributerless Ignition possiblity.. (working on it)

turbodig said:
It needs 7 pulses each crank rotation. Tough to make that work out, as you can't 1/2 a pulse.
Click to expand...
so it would be 7 pulses per half turn of the dist....and we wouldn't have to worry about a 1/2 pulse?
 
turbodig

turbodig

Active member
Re: Distributerless Ignition possiblity.. (working on it)

MikeRenz said:
so it would be 7 pulses per half turn of the dist....and we wouldn't have to worry about a 1/2 pulse?
Click to expand...

the 7th pulse is a sync whenever #1 is at TDC. It's non-symmetrical.

2 sensors at 180 might generate the right stream... I just don't know if the module will fire right with 2 sensors feeding it.

That, and you have the wobbly old dissy back in the game. And, another part to modify.
 
turbodig

turbodig

Active member
Re: Distributerless Ignition possiblity.. (working on it)

New working theory... clamp a wheel onto the inner ring.

Working on drawing...

wheeldrg.JPG


Screws would be slightly countersunk into the notches to not interfere with pulses.
A bit of blue locktite would keep it from slipping.

The ring could be 1/2" thick or thicker.
 
Last edited:
JSM

JSM

Active member
Re: Distributerless Ignition possiblity.. (working on it)

Could you slit the ring, then drill tap for screw?
 
turbodig

turbodig

Active member
Re: Distributerless Ignition possiblity.. (working on it)

JS Manufacturing said:
Could you slit the ring, then drill tap for screw?
Click to expand...

You mean tap the ring on the balancer? Sure, but that would depend on the end user putting the bolt hole in the right place. Lotta risk there.
 
JSM

JSM

Active member
Re: Distributerless Ignition possiblity.. (working on it)

No, screw would be only in the new ring, be more of a clamp then.

Of course if you wanted to get tricky you could get new balancer, make sure diameter was the right size, heat up the ring and slide on, when it cooled down it would be on there for good. Could then true up the diameter if needed.
 
turbodig

turbodig

Active member
Re: Distributerless Ignition possiblity.. (working on it)

sytyguy said:
Not the best pics I've ever taken, but they should help. The 4th pic shows a wrench in between the cover and balancer.....it was a tight fit and measured out at about .300 thick.

Note - this was a spare block I had from a '90 Blazer.....balancer & cover too.

Hood
Click to expand...

Can you measure the diameter of that inner ring? I got like 4.750 on mine.
I wanna see if there's much variance from balancer to balancer.
 
sytyguy

sytyguy

Moderated User
Re: Distributerless Ignition possiblity.. (working on it)

Called my supplier....they have the 872001 in an EPG grouping brand (dunno WTF that means) and I'll have one in my hands in a few days. If this unit works, we're looking at $75.

Hood
 
sytyguy

sytyguy

Moderated User
Re: Distributerless Ignition possiblity.. (working on it)

turbodig said:
Can you measure the diameter of that inner ring? I got like 4.750 on mine.
I wanna see if there's much variance from balancer to balancer.
Click to expand...

Will do in a bit.

Hood
 
turbodig

turbodig

Active member
Re: Distributerless Ignition possiblity.. (working on it)

sytyguy said:
Will do in a bit.

Hood
Click to expand...


Other measurements needed:

Distance from seal journal on balancer outwards towards accy. bolt holes (where the AC bracket would go. Also distance from the same journal to nearby timing cover bolts.

Looking for a good place to mount the bracket for the sensor.
 
turbodig

turbodig

Active member
Re: Distributerless Ignition possiblity.. (working on it)

JS Manufacturing said:
No, screw would be only in the new ring, be more of a clamp then.

.
Click to expand...

That's what my picture was trying to picture. That would work. Makes for a more expensive ring due to getting the holes drilled/tapped.
 
THEMADTYPH00N

THEMADTYPH00N

Active member
Re: Distributerless Ignition possiblity.. (working on it)

Will all this still work out for some of us that have a thicker balancer? I.E. Fluidamper?
 
M

MikeRenz

not stock
Re: Distributerless Ignition possiblity.. (working on it)

Here is my theory for a non-crank mounted ring:
distributorreluctorring.jpg


mounted where the rotor would be....if its spinning at 1/2 speed of the crank....this 'should' work right?
 
WyoSyclone

WyoSyclone

Active member
Re: Distributerless Ignition possiblity.. (working on it)

WyoSyclone said:
There are those 3 holes on the inner hub spokes...
Click to expand...

Hey Dig, Your inner ring theory is what I was talking about with this post... those good pics of the balancer show an opporunity to fly-cut a recess into the rear of the balancer and maybe countersink a plate that is held in via the 3 holes on the inner hub. If no room on the rear, maybe an opporyunity to go at it from the front... would definitely be more serviceable from the front.....
 
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