67' original vs. repo sill plates

[Jeffrey G.]

On eBay auction #160252942495 a pair of NOS 67' sill plates sold for $1001.00. I realize they'e NOS and prices tend to be the highest for NOS parts on eBay, but that has to be a record! I prefer original parts when I can get them, but this sale price surprised me.

I've seen repo sill plates from LICS and they look really good, except for the screw holes not having angled machine holes, which holes are completely covered by the screws.

There must be some more noticeable differences between repos and originals, can anyone enlighten me?

[Ray G.]

Re: 67' original vs. repo sill plates

Hello;

28 ribs repro vs 32 ribs original making the black area slightly wider
(1 1/4")on OEM. Not positive on numbers of ribs. Hard to count.

That's my story and I'm sticking to it.

The larger issue in my pea brain is that the screws heads do not protrude above the plate itself. Usually because larger screws are required when the retaining holes become to large. There are #10 screws w/ #6 heads available to resolve that issue.

Hope this helps.
Ray

[Mike M.]

Re: 67' original vs. repo sill plates

The size of the ribs and their spacing are noticeably thinner in the originals. No need to count the configuration is visually obvious.
Regarding the holes, the originals have additional metal on the underside surrounding the hole to allow for a countersinking of the hole allowing the screwhead to rest slightly below the surface.
I do believe the original screw heads have to be larger a than #6.
I did not see the auctioned set, but have not seen the production configuration on any service pieces.
HaND

[Tom D.]

Re: 67' original vs. repo sill plates

A set from Hartway Motors that I bought in about 1970 - 1975 looks more like the originals (than repros).

Tom

[Jeffrey G.]

Re: 67' original vs. repo sill plates

Thanks! But you've got to wonder why the guy manufacturing the repo sill plates went to all the trouble to reproduce them 87% acurate (28 vs. 32 ribs) I mean all the tooling and fixed expense must have been the same, why not do it right?

[Richard M.]

Re: 67' original vs. repo sill plates

Thanks! But you've got to wonder why the guy manufacturing the repo sill plates went to all the trouble to reproduce them 87% acurate (28 vs. 32 ribs) I mean all the tooling and fixed expense must have been the same, why not do it right?

Exactly my sentiment on the 63 sill plates. I went through a similar madness a few months ago regarding the rib count.

https://www.forums.ncrs.org/showthread.php?t=58246&highlight=sill&uid=4918

Synopsis:
Originals: 13 grooves
GM Replacements: 12 grooves
Repros: 11 grooves

What were they thinking!
Rich
ps Sorry, no thread hi-jacking intended....just feeling your pain.

[Mike M.]

Re: 67' original vs. repo sill plates

The explanation I received is that sure, virtually anything can be reproduced precisely.
However, exact replication and marketing without permission is referred to as counterfeiting or patent infringement.
Reproduction with permission and the huge associated fees then typically makes the process cost prohibitive.
Therefore, if there are two features of the reproduced part that are noticeably different than the original patented piece, these two unpleasant alternatives can be avoided.
HaND

[Ray G.]

Re: 67' original vs. repo sill plates

Hello Jeffrey;
Measured some repro. '67 sill plates.

The black painted ribbed area is 1- .260

Maybe someone will chime in with an Original measurement. The person who paid $1001. maybe.

Hope this helps.
Ray

[Mike M.]

Re: 67' original vs. repo sill plates

Yes, Ray, the width of the black space is the same, this accounts for the ribs being narrower and greater in number on the originals.
HaND

[Stuart F.]

Re: 67' original vs. repo sill plates

Have not seen any one comment about the finish. Is there any difference on 67's? Other years have repros with a satin aluminum finish while originals were anodized (and scratched easily).

Stu Fox

[Mike M.]

Re: 67' original vs. repo sill plates

Good Point,
Originals are smoother and brighter.
Replacements are typically duller with obvious pronounced extrusion marks.
HaND

[Joel F.]

Re: 67' original vs. repo sill plates

Very informative discussion guys. Looking forward to any additional insights.

[Chris E.]

Re: 67' original vs. repo sill plates

So here's the $34,000 question.

What kind of deduction in Flight Judging would this be?

[Mike M.]

Re: 67' original vs. repo sill plates

Typical deduction would be one point each.
Why one point each and not combined?
We have seen cars with one side original, usually the Passenger Side and for obvious reasons a re-pop on the Driver's Side = one point per side.
HaND