HEI Upgrade but No Spark (kinda)
So time to update and ask for help here. PSA incoming wall of text!
I did post up pics earlier here somewhere but after getting it started I was going to set the valves and install a new valve cover gasket when I found a bent pushrod. After replacing it and installing the cork gasket I went about re-setting the float level on the carb and cleaning it out again. I also did the fuel line mod to keep it from vapor locking.
Unfortunately I can't get spark again. I followed the HEI upgrade instructions listed on slantsix.org and it did fire before but now no spark.
Same issue as before-a timing light won't flash until I release the key then it flashes once.
So to isolate some components I started swapping components and trying to get a spark.
Swapped coils twice, HEI modules four times, magnetic pickups three times all to no avail (all were used junkyard parts).
The coils both measure out at 0.6 ohms resistance and all the pick ups (set at .008 air gap with brass feeler) are around 250 ohms give or take. I ran a jumper wire across the ballast resistor as well.
I get battery voltage at the coil and from the signal from the ignition wire with key on/start.
Pulled the dissy and then tried spin testing it-still no spark.
I then tried using the old coil to eliminate the e-coil as a source of issue and hot wired from battery power and spin tested again. No dice.
This leaves me to believe the distributor is the problem but why would it run previously and now it's dead? Can't wrap my head around it!
Oh I should mention-I converted a points distributor to an electronic distributor. How-well it's totally butch but I ground down the old points block to a diameter to fit the (new) reluctor to fit upside down over the top. Drilled a hole and pressed in the roll pin. And cut down the rotor to fit under the cap.
I will take some wiring pics later today but my next step is a different distributor (which I have a WTB ad in the classified forum here).
Some pics I do have of the frankenstein distributor.
So time to update and ask for help here. PSA incoming wall of text!
I did post up pics earlier here somewhere but after getting it started I was going to set the valves and install a new valve cover gasket when I found a bent pushrod. After replacing it and installing the cork gasket I went about re-setting the float level on the carb and cleaning it out again. I also did the fuel line mod to keep it from vapor locking.
Unfortunately I can't get spark again. I followed the HEI upgrade instructions listed on slantsix.org and it did fire before but now no spark.
Same issue as before-a timing light won't flash until I release the key then it flashes once.
So to isolate some components I started swapping components and trying to get a spark.
Swapped coils twice, HEI modules four times, magnetic pickups three times all to no avail (all were used junkyard parts).
The coils both measure out at 0.6 ohms resistance and all the pick ups (set at .008 air gap with brass feeler) are around 250 ohms give or take. I ran a jumper wire across the ballast resistor as well.
I get battery voltage at the coil and from the signal from the ignition wire with key on/start.
Pulled the dissy and then tried spin testing it-still no spark.
I then tried using the old coil to eliminate the e-coil as a source of issue and hot wired from battery power and spin tested again. No dice.
This leaves me to believe the distributor is the problem but why would it run previously and now it's dead? Can't wrap my head around it!
Oh I should mention-I converted a points distributor to an electronic distributor. How-well it's totally butch but I ground down the old points block to a diameter to fit the (new) reluctor to fit upside down over the top. Drilled a hole and pressed in the roll pin. And cut down the rotor to fit under the cap.
I will take some wiring pics later today but my next step is a different distributor (which I have a WTB ad in the classified forum here).
Some pics I do have of the frankenstein distributor.