Bob Perkins
March 24, 2014

Over-the-Counter Tach

I recently saw a '66 Mustang with a very cool tachometer mounted on the steering column. The tach case was the same as a '66 Cobra version with a black wrinkle finish, but the face was a 6,000 rpm Rotunda rather than the typical Cobra. I asked the owner about it and he said it was in the car when he bought it over 20 years ago. Any idea what it might be? I'd like to have one for my Mustang if it's an original Ford tach.

Bob Brown
Via the Internet

The tachometer you've described sounds like the Rotunda C6AZ-17A326-D tach kit, which was sold over-the-counter through the Ford Parts Division. I agree that this is a very cool tach for a '66 Mustang. The problem is that they are very hard to find in working condition. I am including a photo here of the only one that I have in my tach collection.

Ford used a mask to minimize overspray on the intake manifold. The thermostat housing, bypass hoses, and clamp should be blue or blue overspray, with a lesser amount of paint nearer the intake manifold.


Original vs. N.O.S. Line

I have two upper oil cooler lines for a '69 428 Super Cobra Jet Mustang (see photo). One is original to my car. The other one I bought several years ago as New-Old-Stock. The lower fitting on the NOS hose is different from the fitting on my original hose. What do I have here?

Bill H.
Via the Internet

Both lines appear to be original Ford oil cooler lines. It appears that the fitting on your original line was repaired or replaced at some point in the past. I would use the NOS line (with the red plug in the nut).


HoodPin Attachment

On the '69 Mach 1, were the round hood pin plates on the hood attached by screws or rivets? I have been told that the factory used rivets but dealer-installed hood pins used screws. Is this fact or myth?

Bill Henson
Via the Internet

Factory installed, the round chrome plates for the '69 Mach 1 hood pin kit were secured by four chrome pan-head screws (see photo of the hood pin plate from my 52-mile '69 Mach 1). Rivets were not used for the C90Z-16700-C accessory kits sold by the Ford Parts and Services division.


Boss Detailing

I will be painting the engine for my '69 Boss 302 very soon, right after it returns from the machine shop. I have two questions about the painted items. Should the thermostat housing be painted or natural along with the hose and clamp? Regarding the rectangular block that bolts to the head for the power steering, is it blue or natural?

Jim (last name withheld)
Via the Internet

When the engine was originally built by Ford, the thermostat housing, bypass hose, and clamp were already on the engine when it was painted. Ford used a mask to minimize overspray on the intake manifold. The thermostat housing, bypass hoses, and clamp should be blue or blue overspray, with a lesser amount of paint nearer the intake manifold. The power steering mounting block on the left cylinder head is typically painted blue also.


Let us hear from you. Send your restoration questions to: Resto Roundup, c/o Bob Perkins, Perkins Restoration, North 2123 Hwy. 16 & 26, Juneau, WI 53039. Send email to mustang.monthly@sorc.com.