[69_granprix]

can anyone tell me the delco-remy part number for a 6v. (331 cu.in) 1951 cadillac starter motor. We think we might have a 12v motor installed. The cranking problems we'er having points to a faulty battery but we've tried a number of different batteries including a 6v. optima with 950 cranking amps, with the same results, the engine does not seem to spin as fast as it should. I consider myself fairly sharp. but, this has me stumped. Any help would be really,really appreciated.
thanks 69granprix

[JT]

The Delco pn is 1107969.

[69_granprix]

Thank you. 1107696 is the part number on our stater motor. can anyone suggest a
solution to our problem. We are definitely perplexed.
69_granprix

[quadfins]

What condition are the cables? They might be corroded internally, and creating enough resistance that 6v can't push enough power to the starter.

[nearchoclatetown]

JT said 969, you said 696. Was that a typo? As you probably know delco starters are date coded, that may help you ID yours.

[Bob Kinker]

Better yet, what size are your battery cables? Are you using 12 volt cables? 6 volt systems require heavier cables!

[69_granprix]

There was a typo the part number is 1107969EorF20. We installed new larger 6v. cables.When we installed the new optima battery, the car started ok. We let it run for awhile shut it off and tried to restart it. It acted like we had a low battery again! The starter motor has been rebuilt twice by the most reputable builder in the west. I've checked and cleaned the ground. Still perplexed. Thank you for any help. Joe

[69_granprix]

what is the normal current draw for this starter motor at room temp.and under load. I was thinking of using a clip on cable ammeter to measure the draw, any thoughts. I'm thinking the starter motor might bench test OK but fail under load. Thrust clearance seems ok and no bearing slop.Need technical help. Joe

[Bhigdog]

Assuming it's a solenoid type unit. After the battery, cables, and connections I would next logically suspect the solenoid main contacts........Bob.

[69_granprix]

Bob, the solenoid has been rebuilt and tested ok. Joe