New distributor

[PolaraFury]

Was given an Engine Works 4RTR-383 distributor. (The copy of the MSD 8386 RRR ) Put it in my low deck stroker, set it to 30 total advance. On a 544/541 summit hydraulic roller cam with 440 source heads. When I step on it I get a steady backfire out the exhaust.

What are your thoughts?

 

[Don Frelier]

Rotor phasing problem?

 

[Don67Satellite]

30 total, what's the initial?

 

[oldkimmer]

Wires in the wrong spot. 5/7 8/4 ?

 

[Geoff 2]

Does it require the bal res? Was it removed if not needed?

 

[Bee1971]

Does it require the bal res? Was it removed if not needed?

Based on this

(The copy of the MSD 8386 RRR )

It’s a ready to run , so should have FULL BATTERY VOLTAGE to positive side of coil and positive red of distributor

And of course a low ohm ignition coil , something like a MSD Blaster 2

 

[PolaraFury]

30 total, what's the initial?

16

 

[PolaraFury]

Based on this

(The copy of the MSD 8386 RRR )

It’s a ready to run , so should have FULL BATTERY VOLTAGE to positive side of coil and positive red of distributor

And of course a low ohm ignition coil , something like a MSD Blaster 2

No Ballast Resistor it has been gone for years

 

[PolaraFury]

Wires in the wrong spot. 5/7 8/4 ?

All in order

 

[PolaraFury]

Based on this

(The copy of the MSD 8386 RRR )

It’s a ready to run , so should have FULL BATTERY VOLTAGE to positive side of coil and positive red of distributor

And of course a low ohm ignition coil , something like a MSD Blaster 2

No BR it has been gone for years now

 

[PolaraFury]

Does it require the bal res? Was it removed if not needed?

No BR

 

[Bee1971]

What ignition coil are you running

 

[fourgearsavoy]

Was given an Engine Works 4RTR-383 distributor. (The copy of the MSD 8386 RRR ) Put it in my low deck stroker, set it to 30 total advance. On a 544/541 summit hydraulic roller cam with 440 source heads. When I step on it I get a steady backfire out the exhaust.

What are your thoughts?

My thought is possible exhaust valve not seating. Easiest thing to do would be to try a "known good" distributor.
Gus

 

[PolaraFury]

What ignition coil are you running

Flame thrower Petronix I bought from 4 sec flat to work with his ignition box when I deleted my ballast resistor

 

[PolaraFury]

My thought is possible exhaust valve not seating. Easiest thing to do would be to try a "known good" distributor.
Gus

I’m going to talk to the guy at the speed shop that gave it to me and I might put the old one back on

 

[Bee1971]

Flame thrower Petronix I bought from 4 sec flat to work with his ignition box when I deleted my ballast resistor

His ignition box requires the Flamethrower I at 1.4 - 1.5 OHM

That would bee WRONG for your Ready to Run CDI Distributor that you just installed

You need a Pertronix Flamethrower II or a MSD Blaster 2 Ignition Coil

Ignition coil in the .6 - .7 OHM Range for a CDI Type Ignition System


Measure the OHM Resistance on your current Ignition Coil first and get back with us
Pertronix Flamethrower I should bee around 1.5 OHM and is likely your issue as it’s not designed for the CDI Type Distributor or a CDI Ignition Box

 

[Geoff 2]

^^^^ This is incorrect.
[1] GM HEI, which is an inductive ign system, comes with a coil that has 0.6 ohm pri resistance.
[2] This dist is not a CD dist.

I suspect the RTR dist uses the same circuitry, or close to it, of the HEI 4 pin module, just laid out on a printed cct board.

The MSD dist recommends the Blaster 2 coil, & no bal res; this coil has a 0.7 ohm pri res. You could use a stock coil with this dist, which will require the stock bal res to be used with the coil, but full 12v to the dist.

Bottom line with the coil: You can use any inductive ign type coil with the dist as long as the bal res is used with THAT coil if it is designed to use a bal res.

 

[PolaraFury]

I’m only getting 10.8 volts at the coil. I’m going to have to chase an electrical gremlin

 

[Geoff 2]

Is that engine running/not running? Normal to get some voltage drop through the system without the engine running. Voltage will increase with running engine, alt charging.

 

[PolaraFury]

I put my old school one back in and it runs fine