Topic: C9OJ- spindles?

[Andrew@MagMustangs]

Anyone ever seen C9OJ- marked spindles? Big bearing shaft like KKX or D0ZA- spindles but these are for Drum Brakes. Was competition suspension available with front drums? Just wondering what cars would have used these? Never seen one before...

[7Lscjracer]

That's weird because the big bearing and tie rod taper size increase was for 70 production other than the Boss cars which got them early.
I'd get in touch with Dan at Chockostang, he's the guru, and according to him, 69 drum spindles are the same as 67-68 drum spindles.
Therefore it follows that they shouldn't accept the big bearing or have the larger tie rod taper.
Do your spindles have the larger tie rod taper though?
I didn't run the number, so without doing so, my guess is what you have is for full size Ford.

[9TO2Hknot4cell]

Anyone ever seen C9OJ- marked spindles? Big bearing shaft like KKX or D0ZA- spindles but these are for Drum Brakes. Was competition suspension available with front drums? Just wondering what cars would have used these? Never seen one before...

Yep, my 69 mach1 351W has front drum brakes with the standard for the 69 mach1 competition suspension.

[Andrew@MagMustangs]

Yep, my 69 mach1 351W has front drum brakes with the standard for the 69 mach1 competition suspension.

The standard Mach 1 suspension is not Competition Suspension. Yes, Mach 1 did indeed come standard with front drum brakes. That arrangement would have the regular 67-69 drum brake spindles with standard sized (for 69) spindle shafts.

[Andrew@MagMustangs]

That's weird because the big bearing and tie rod taper size increase was for 70 production other than the Boss cars which got them early.
I'd get in touch with Dan at Chockostang, he's the guru, and according to him, 69 drum spindles are the same as 67-68 drum spindles.
Therefore it follows that they shouldn't accept the big bearing or have the larger tie rod taper.
Do your spindles have the larger tie rod taper though?
I didn't run the number, so without doing so, my guess is what you have is for full size Ford.

Yes, standard 67-69 drum brake spindles are all the same C6OA- cast spindles. These look to have the smaller tie rod holes. Definitely not for full-size Ford which had completely different spindles. The Parts and Service Engineering number suggests that they might have been designed as a replacement spindle for something, but what?....

Would definitely be great for 67-69 without having to go with later tie rods.

[J_Speegle]

...........The Parts and Service Engineering number suggests that they might have been designed as a replacement spindle for something, but what?....

If so then it should be listed in one of the MPC and one of the OSY books. Not listed in the last printed version of the MOC but I guess you already checked there

[jwc66k]

The "J" in the fourth position is for "Autolite". What or why is unknown.
Jim

[Andrew@MagMustangs]

If so then it should be listed in one of the MPC and one of the OSY books. Not listed in the last printed version of the MOC but I guess you already checked there

Correct. They are not listed in the 1975 version MPC. That is the only one I have.

The "J" in the fourth position is for "Autolite". What or why is unknown.
Jim

Depending on the source, the 4th digit 'J' also signifies: Ford Parts and Service Division; Parts and Service Engineering office. Not necessarily specifying Autolite division, but that could be after 1972 when Motorcraft came around? I'm not sure on that one.

[7Lscjracer]

Maybe your spindles are a transitional part with the thicker spindle but same old tie rod hole, and were superceded by the 70 type spindle which addressed the previous safety and performance shortcomings.

[J_Speegle]

Maybe your spindles are a transitional part with the thicker spindle but same old tie rod hole, and were superceded by the 70 type spindle which addressed the previous safety and performance shortcomings.

What would the need be for spending the tens of thousands of dollars it would have taken to get it into production?  IMHO there is another reason and application we have not uncovered yet.

Guess some might look at the late KKK and DOZZ spindles as a "transitional" part or just part of the evolution

[7Lscjracer]

What would the need be for spending the tens of thousands of dollars it would have taken to get it into production? 

Safety and performance shortcomings that came to light could be one reason.
Oops, should have done it this way instead happens often enough, and can be the impetus for change with industry competition, gov't regs, litigation etc. also at play.
After etc. comes consumer lobby which is at the bottom of the totem pole.
That seems like a universal constant.

[9TO2Hknot4cell]

The standard Mach 1 suspension is not Competition Suspension. Yes, Mach 1 did indeed come standard with front drum brakes. That arrangement would have the regular 67-69 drum brake spindles with standard sized (for 69) spindle shafts.

I stand corrected, had something else on my mind. All 351 and 390 Mach 1's came with the "GT handling" suspension package. The 428 Mach 1's are the ones that came with the "competition HD" package.

Manual 10-inch four-wheel drums were standard on the Mach 1, regardless of the engine ordered; 11.3-inch power front disc brakes with single-piston floating calipers were offered as an option.