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Username Post: Electrical Issues 265cc 56 Bel Air        (Topic#365909)
Lowpez75 
Newbie
Posts: 3

Reg: 12-14-20
07-26-21 12:11 PM - Post#2823925    

I recently installed an electronic ignition distributor onto my 265 (56 bel air ) it’s was the three wire Mallory dist from auto parts store . Box not needed as per instructions Since then engine wont run right , burns up alternators . (Already replaced 3 ) Runs like crap . What am I doing wrong ? Dist is set right . I can time engine but it’s like it knocks itself out of time . Has New carb, plugs and wires . (Gen light on dash is on )
Thanks for your help



 


warpwr 
"15th Year" Gold Supporting Member
Posts: 959
warpwr
Loc: Santa Clara, CA
Reg: 04-11-06
07-26-21 09:53 PM - Post#2823952    
    In response to Lowpez75

There are lots of things going on here.
It's 265CI by the way.
If it has an alternator there are two kinds, 3 wire and 1 wire I believe.
And if it has an alternator there is a modified wire harness that has to be used, I think Danchuk has them. The alternator has an internal regulator while the original generator used a fender mounted regulator that needs to be by-passed. There is a diode involved to keep the generator light function on the dash working properly with an alternator.
If you are using a non stock distributor you probably have to by-pass the ballast resistor that's on the firewall near the master cylinder. When you do that you should splice GEN 1 and GEN 2 wires together at the ignition switch.
All of these things are off the top of my head so don't quote me.
There are experts in this area of expertise who might chime in with the straight scoop at any moment.
Good luck and if you have lots of money just replace everything, engine and all, with an LS motor.


Vaughn
56 Delray 327, 5 spd



 
warpwr 
"15th Year" Gold Supporting Member
Posts: 959
warpwr
Loc: Santa Clara, CA
Reg: 04-11-06
07-26-21 10:03 PM - Post#2823953    
    In response to warpwr

I have a wiring diagram that I made up for my car.
Maybe you can get some ideas from what I did. Not a 265, a 327 but the concept is similar.
Vaughn's ignition wiring diagram

Vaughn
56 Delray 327, 5 spd



 
YOUNG57 
Frequent Contributor
Posts: 1326

Loc: Tennessee
Reg: 12-06-10
07-27-21 09:08 AM - Post#2823972    
    In response to Lowpez75

Not enough information, but…

If you’re burning up alternators there must be a wiring issue. Are your alternators internally regulated, i.e. 10SI or 12SI. If so, the original voltage regulator should have been removed and a new wiring scheme used. If you have externally regulated alternator with externally regulator, get rid of them.

10SI or 12SI alternators are very easy to wire in. Remove all wiring related to original generator (or alternator) and its external regulator, but save the small brown wire from dash GEN light. Connect that brown wire to the #2 terminal of two wire plug on side of a 10SI or 12SI alternator and another wire from the #1 terminal of the two wire plug to the BAT terminal on back of the alternator. Run a new 10-gauge (or larger) wire from the BAT terminal to the battery positive terminal or the battery cable at the starter solenoid to charge the battery and power the car and run a new 14-gauge wire from the BAT terminal to the horn relay where you removed a previous wire from the external regulator.

Now you should have proper 12.6 to 14 volts to power your new distributor and engine.




Edited by YOUNG57 on 07-27-21 09:09 AM. Reason for edit: No reason given.

 
BigDogSS 
"13th Year" Silver Supporting Member
Posts: 4954
BigDogSS
Loc: SoCal
Reg: 12-21-01
07-27-21 10:16 AM - Post#2823973    
    In response to YOUNG57

Also, check plug wires for correct firing order.

    1967 Chevrolet Impala SS convertible 327 - Ermine White C1 - VCCA Senior Award
    1967 Chevrolet Impala SS Sport Coupe 396 - Marina Blue FF - personal "barn-find" lol



 
Lowpez75 
Newbie
Posts: 3

Reg: 12-14-20
07-28-21 12:00 PM - Post#2824047    
    In response to warpwr

Thank you everyone for your help . I’m running the msd ready to run distributor . So I’m not using a box . It’s a three wire dist I have it going straight to coil nothing in between . Is that correct ? I’m also using a resistor? Is that correct ?



 
55 Shaker 
Member
Posts: 1633

Age: 71
Loc: north central IL.
Reg: 03-13-06
07-28-21 03:45 PM - Post#2824060    
    In response to Lowpez75

Lowpez75 your first post says you're running a Mallory distributor, your last post says a MSD distributor.

The older I get, the more dangerous, I am !!!!


 


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