petronix wiring/ alternator

[drem312]

Re: petronix wiring/ alternator

Tonight I wired up the coil and starter and put the battery switch on and my boat lights in the cabin and the panel came alive!!!! Hit the key and she spun like a top with juice arching out of the coil(no plug wires on it yet .. so tm finish the wiring to the fuel pump add the manifolds ,plug wires and plugs and one more wire to the coil ( got it all figured out now) and add gas. Hope it works,,keep in mind I bought this 25ft fixer upper last August out of NJ and I never even seen any cabin lights or power in it so the when the lights came on last night and everything working on the panel was the boost I needed.

 

[gdombroski]

Re: petronix wiring/ alternator

Just found the old coil that was used with the petronix it says use with an external resistor and the number on the coil is 29690 . I bought this boat with a seized motor so I have no idea what worked so the red purple wire is probably the resistor wire then ? I never had points when I bought the boat it came with the petronix ignitor in the distributor

OK, in that case what I would do is put it back on with black and red/purple to coil postive and start. Test coil positive to see voltage that will tell you resistance required. The new 1.5 ohm coil might be fine without additional resistance. Also, test to see if your ESA works by manually moving the lever. Let me know results and I can suggest next move if required.

 

[drem312]

Re: petronix wiring/ alternator

ok thanks I will let you know how it goes tonight I do have the old esa I can tell by the blue looped wire and there is no diode fix!!!! ,,I just put the plugs and wires ,maniflods on last night and today i will try and start this beast ..will let you know according to petronix the set up I have w/o the resistor wire hooked up is what the suggest,,12volt off the key on/start position

 

[drem312]

Re: petronix wiring/ alternator

Primed the electric pump and she started right up. Let it run for an hour and so far so good .!!!!!

 

[drem312]

Re: petronix wiring/ alternator

Ran great

 

[gdombroski]

Re: petronix wiring/ alternator

Ran great

Under load or just idle? Did you check to see if the coil was getting warm? It shouldn't. If warm at idle it will get hot under load. Hope it stay's cool and your good to go if your ESA is working. Did you check that?

 

[drem312]

Re: petronix wiring/ alternator

yeah just at idle and reved up but it all stayed cool I did check the coil it seemed fine,, I ran a gallon of gas thru it ran about an hour checked timing I know it could all change when under load/power but for know,,, you know when it was running I put the light tester on the back of the alternator the post that had the red/purple and nothing,,,,I thought there would be juice here?

 

[gdombroski]

Re: petronix wiring/ alternator

you know when it was running I put the light tester on the back of the alternator the post that had the red/purple and nothing,,,,I thought there would be juice here?

Mine produces steady 12V when running. Don't have a voltmeter? Out of curiosity what carb you have. Reason I ask is that I have Holley 4bbl remans and found out that my choke wire was also resisted and Holley recommends 12V.

 

[drem312]

Re: petronix wiring/ alternator

I will check it again you know my. Voltage gauge on the dash would go a steady
14 volts then drop to.11 to 12 so maybe my alt is failing I have a Rochester quadrajet

 

[drem312]

Re: petronix wiring/ alternator

Ok so ran it again and check things again the alt must of been sticking bc now the post that had the red/ purple wire has juice coming out of it . After running the motor the coil gets very hot ... is that normal with a flamethrower coil? I can't keep my fingers on it for two seconds...the motor ran fine but I'm curious. It's hooked up to the ignition key on like they said but I'm thinking an hour on the ocean with five people it will boil I'm wondering if I hook the 12 volt key on wire to the distributor and not the positive side of the coil but use the resistor wire to feed the coil?

 

[CobiaXL]

Re: petronix wiring/ alternator

Them flamethrowers get very hot, Internally resisted makes lots of heat.....Way to hot to handle.Using the resistor wire would cool coil down quite a bit.Very little power if none will be lost if you used the wire.

 

[drem312]

Re: petronix wiring/ alternator

I tested the shift interruptor and the engine did stumble but didn't stall. Now the diode fix is that done to also protect the esa from burning up? Or is it there to stumble the engine? I think today I'm going to try and use the resistor wire on the coil and 12 volt ignition wire to the red wire on the distributor see if will run cooler

 

[drem312]

Re: petronix wiring/ alternator

Ok after another night of reading about the petronix and flame thrower coil I found that it does get hot but I really didn't want a race boat for a quarter mile drag strip so I put the resistor wire from the alt to the pos side of the coil along with the cranking wire from the starter I then connected the key on ignition wire directly to the red coming out the distributor re gapped the plugs back to 35 and retimed to around 34 -35 with the higher rpm ran it at around 2k rpm and it ran better and the coil was perfect. I fish 40 miles off shore and I know that expoxy coil would had boiled over mo doubt. I will be on the water testing tm but I feel much better now thank you all for the advice not to run the 12 volt to the coil