Okay, Pimple It Is

[Joe Ciaravino (32899)]

All,

Please refer to the thread below "Dimple", begun Thursday, 21 December 2006, at 11:31 a.m. Is it possible that the "pimple" is the aluminum rivet head for the wire harness clip, just below. The clip holds the main engine wiring harness to the underside of the cowl, exactly at the location shown in Nick Culkowski's photo.
If anyone could check this, it would be much appreciated. It would also answer a few questions that I have:

1. If it's not a rivet head, then what is it's purpose?
2. On my Corvette, why is it coincident with the harness clip rivet?
3. If all header panels were molded by the same manufacturer, using the same process, then why do only some headers have the pimple?

****If it IS a rivet, then assembly order would dictate whether the head appears above or lies below the header panel. In many cases, the rivet is installed and bucked to the bare cowl, and then the header is bonded over it, covering the rivet head.

Thanks in advance.

Joe

[Brian McHale (28809)]

J clip & Pimple

1) Don't know it's purpose.

2) I just looked at my car and the J clip is located closer to the 14th vane that the 13th. The rivit is also further back than where the pimple should be onm my car. My pimple was masaged away during it's 1 repaint, only under close examination can you see where it was.
3) I was under the impresion that all cars originally had the pimple.

BTW at a recent Regional I was told that the main harness should NOT pass through this J clip. I DISSAGREE and have left my harness supported by just this 1st J clip with the balance supported to the hood release cable with T straps.

[John Hinckley (29964)]

Re: J clip & Pimple

The pimple is not associated with the J-clip rivet; the J-clip on my '67 is two louvers inboard of the "13th louver" pimple location.

[Michael Hanson (4067)]

Re: J clip & Pimple

I agree with John. I believe the pimple was in the fiberglass from the source.

[Nick Culkowski]

Re: J clip & Pimple

The pimple (upper left corner of image) clip AND harness from another angle. The position of the fiberglass pimple and the metal uncoated J clip do not appear to be related.

Note the routing of the harness (and C60 power feed) through an uncoated metal J clip on the firewall. Since the last time this was discussed, a number of owners with known unmolested original cars have sent me photos depicting the same routing of the harness...

[Wayne Womble (5569)]

Re: Pimple or Pauple

This is one from a 63 carefully stripped to show its construction. It is simply a raised resin bump obviously some anomaly in the mold.

[Mike McKown]

No arguement here.

I wouldn't disagree with the location of Brian's and your pimple one bit. For conversation purposes only, I've looked at probably 50 midyears for this feature. Most had it. ALL the ones I looked at had it 13 louvers over, from left/right A couple didnt have it at all. I was told that replacement surround panels did not have the pimple. I don't know. Could be hearsay. Of course, it could have been lost through carefully grinding it off. Merely sanding it would seem like it wouldn't remove the pimple unless it left a crater around the surface of where the pimple was.

My '63, a friends '63, another friends '64 my '65 and another '66 body I have all have it at the location I specified.

[Brian McHale (28809)]

J clip & pimple

My 67 C60 VIN # 7471 is routed as in your photo and I hole heartedly believe that this is the way the General did it.