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Old 03-15-2018, 11:36 AM   #211
Scoutboy74
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

I was thinking you could leave the bulkhead connection portions of that RW alone and intact. Just run yourself a completely new wire from IGN to coil passing through the firewall at any available hole you might have. ALL Scouts have mystery holes poked in the firewall. Don't even try to tell me yours doesn't.
I'm thinking this would be easier than falling out of bed. Its reasonably easy to access the IGN SW. The coil is super easy to get at. All you need is a hole in the FW to pass one new wire through. Crimp appropriate terminations at either end once run. Done and done. Stock RW remains in place and completely unmodified. What am I missing?
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Old 03-15-2018, 12:28 PM   #212
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

Another alternative is to mount a small 12 volt DC relay some place, mines attached to the top of the heater plenum by the passenger door. Use the wire currently going to the ignition coil from the ignition switch to turn on the relay. Pull it off the ignition coil and run it back through the firewall through one of the before mentioned holes in the firewall. Connect it to one side of the added relay's coil, and ground the other side of the relay's coil. Then run 12 volts from the battery, or some other handy place, through the common and normally open contacts of the 12VDC relay, and then to the ignition coil.
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Old 03-15-2018, 01:56 PM   #213
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

That seems rather complex.
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Old 03-15-2018, 02:32 PM   #214
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

Quote:
Originally Posted by 428street View Post
I was afraid of that answer. Thats a real PITA because my RW starts at the spade on the connector that plugs into the IS and then goes to the back side of the firewall plug connector. I'd have to do some work and not super comfortable ripping the wire out of the connectors on both sides. I just don't want a mess or more issues then what I started with but I understand that is my call.

I did call Pertronix tech support and got some idiot which I think I knew more about the unit then he did and thats not saying much. He said it would work fine with the stock RW in place but the voltage will not be as high as if I took it out.

Another trusted IH guy I know has all pertronix units in his IH's and he's aways just installed the EI and been done with it...he has some SII's and medium duty trucks. He said none of his trucks had external BRs but fairly certain they also have what I have which is the RW from the ignition switch.
Simple solution. Go get a 12v relay. Wire the coil of the relay to the resistance wire. Wire 12v from the back of the alternator to one of the contacts on the relay. (you want the back of the alternator not the battery,if you pull off the battery, your alternator gauge wont work right, it will think its always charging when really, its the loads you connected to the battery) The other contact goes to the coil.

A typical automotive relay has a coil resistance of about 100 ohm. For the purposes of tripping the relay the voltage drop is negligible. Consider that the coil and resistor together are about 3 ohms. The coil draws four amps. That's why you can easily burn your coil ,points or ignition module if you leave it on. Since the coil and resistor are about the same resistance, the resistor drops about 6 volts leaving 6 volts or so for the coil. The relay however has around 100ohms. So the total is about 101.5 ohms. The current draw is about 118ma (0.118amps) So the resistor wire only drops 177mV (0.177volts). The relay will never notice there's a small resistor in series with its coil.
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Old 03-15-2018, 03:51 PM   #215
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

My heads in the clouds and my tails in a spin...name that song....

The main issue I have in general is that the RW comes from inside the connector and how do I get that wire out from the black connector block that plugs into the IS. I'm sure if I take some time and patience I can figure it out.
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Old 03-15-2018, 04:11 PM   #216
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

Oh, I see. Its a gang connector. I was thinking each wire was connected to the switch individually. Sorry. Yeah, that makes my simple plan more difficult to execute.
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Old 03-15-2018, 06:22 PM   #217
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

Remove the plug from the switch.
Attack the business end of the connector.
Slide a small probe down the outside and depress the locking tab.
Pull gently on the wire and the connector should slide out.
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Old 03-16-2018, 11:21 AM   #218
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

Thank you gringo and everyone for your help...
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Old 07-17-2018, 04:15 AM   #219
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

Just a quick update because I haven't posted for a while. I go balls out for 2/3 days then get caught up in life and don't touch it for 3 months. With the help of this forum and some local older gear heads I've gotten to a point of where I think I am good. I still think there is some fine tuning and the biggest issue I have is I truly don't know what good is for a 50 y/o truck. My expectation might be to high for what I think the way the engine should run. If I don't warm it up for 5-10 minutes it's not too happy.

I installed a pertronix EI and blaster coil, new carb, etc. The truck runs fine, the exhaust smell I have been chasing is much better but still has some "stink" especially when I start it up initially. I've taken the truck on many 10-15 runs and several 1 hour runs as well. It doesn't love the highway from a speed standpoint but that is to be expected (4.27 gears, 4 speed trans, 304). I'm at 50-55 and she is humming for sure. Max I believe is 63 MPH with my setup.[/B]
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Old 07-17-2018, 06:02 AM   #220
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

What did you do to address the resistor wire? What's the new carb that you put on? Is the choke functional? A brief warm up interval for a cold, carbed engine is to be expected. Much different than a pooder kuntrold, fyool injekshun modur. Some basic expectations that should apply to any engine include...it starts up easily hot or cold, with a minimum of starter cranking required in either case, the applied choke keeps the freshly started, cold engine running smoothly at a fast idle which either steps down automatically, or is manually controlled via a cable and push/pull knob, the warmed up engine idles smoothly at a reasonably low rpm, the engine tachs up smooth and steady from idle to wide open while in neutral, with no burps, farts, belches, sneezes, or wheezes, there is little to no visible smoke exiting the tail pipe at any point in the throttle range, once placed in gear, the engine accelerates smooth and strong up to the usual shift points and beyond with no burps, farts, belches, sneezes, or wheezes.
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Old 07-17-2018, 09:50 AM   #221
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

I tested the voltage at the coil and it was 12v. I also confirmed that the 72" resistor wire was cut at some point so only 4-6" were left in the entire wire so I left it be unless I have problems down the road.

New carb is "old" new one I got from IHPA with choke fixed, Holley 2300 brand new. Choke is now functional.

i would say everything you listed is true of my engine, starts right up, idles well, etc. I have two small issues left. When shifting between gears this is a slight hesitation, less when I'm shifting around 3k and there is still a little more "stink" than I would like but it is 75% better than before. Truck has never stalled out at any point then driving, over heated, coughed, etc. The hotter is gets (normal running engine temp) the better it is.
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Old 07-17-2018, 11:38 AM   #222
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

Yeah, that should be fine for the res wire. Not much resistance to be had from that short of a chunk.
The stink you mention is often the result of a rich air to fuel ratio, as in more fuel and less air. That is the combo that a stone cold engine prefers and is accomplished by means of the choke plate being closed. A warm engine does much better on a leaner mix...more air and less fuel, but it can't be too lean or it will cough, sputter and possibly die. Starting a cold, carbed engine in an enclosed area can definitely produce some eye-watering, nose curling fumes especially while the choke is applied, but shouldn't be all that pungent in an open area, unless standing directly in the exhaust path.
Another thing to take note of is the presence of any smoke at the tailpipe. You really shouldn't see any. Dark black, sooty smoke accompanied by fumes strong enough to make your eyes water is symptomatic of an over-rich fuel mix. Blue smoke that smells more like what you might expect out of a 2-stroke motor (bike, chainsaw, weedeater etc) is motor oil entering the combustion chamber...she's burnin' oil!
What, if anything was done about your faulty mechanical and vacuum advances in the distributor? Those items not working properly will have a huge, negative impact on engine performance.
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Favorite hobby...Driving Salma Hayek in my Scout

Coal Trickle - '99 Dodge Ram 2500 Q-Cab SWB 4x4 - 5.9L 24V CTD/NV4500
Hooty - '74 SII - 392/TF727/D20/3.73 D44's/Spartan FA/Krac-lok RA/RC 4" SUA/34x10.5 TSLs/33g Fuel/HFT 8k winch
Mongo - '71 1210 Std Cab 2WD - 345/TF727/RA17 D60 4.10 Trac-lok - "Mongo love candy! Duh, huh, huh!"
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Old 07-17-2018, 11:47 AM   #223
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

I took the original dizzy out and had it professionally rebuilt along with a new v/a. It came back like brand new. I don't get any noticeable smoke after initial startup and definitely not when it gets warm. I think it's close to about a perfect as I'm going to get a 50 y/o engine but since I don't have the experience to tell what is normal I question it. The old gears heads think it sounds and runs well.
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Old 07-17-2018, 12:45 PM   #224
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

Sounds like you just need to get acclimated to it then.
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Favorite hobby...Driving Salma Hayek in my Scout

Coal Trickle - '99 Dodge Ram 2500 Q-Cab SWB 4x4 - 5.9L 24V CTD/NV4500
Hooty - '74 SII - 392/TF727/D20/3.73 D44's/Spartan FA/Krac-lok RA/RC 4" SUA/34x10.5 TSLs/33g Fuel/HFT 8k winch
Mongo - '71 1210 Std Cab 2WD - 345/TF727/RA17 D60 4.10 Trac-lok - "Mongo love candy! Duh, huh, huh!"
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Old 07-17-2018, 01:36 PM   #225
428street
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Default Re: Need help with vacuum advance with 304 and 2300 Holley

Thats a fair statement SB.

I now have a rear brake that appears to be sticking (shoes or e-brake cable). Hub/wheel area gets warm/hot. Going to post something up on that in the appropriate section next.
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