1971 carb idle mixture limiters--original color

[Joe L.]

Re: 1971 carb idle mixture limiters--original color

I'm not quite clear? The photo I posted above, is my 18k mile '71 LS 5. Is their originality being questioned? Isn't this proof enough, that black were installed by the factory? I certainly didn't touch, change or alter them under my ownership, and doubt any of the previous owners did.

Kevin------


I have no doubt that the caps are original. In fact, since I cannot find that anything but the red caps were ever available in SERVICE, the black caps have to be original. However, I suppose it's still possible that some original carbs had red caps. Whether that's true, or not, doesn't change the fact that your black caps are original.

[Gary B.]

Re: 1971 carb idle mixture limiters--original color

Kevin,
Can you send me that picture???
Gary B
gbozz08@gmail.com

[Terry M.]

Re: 1971 carb idle mixture limiters--original color

I'm not quite clear? The photo I posted above, is my 18k mile '71 LS 5. Is their originality being questioned? Isn't this proof enough, that black were installed by the factory? I certainly didn't touch, change or alter them under my ownership, and doubt any of the previous owners did.

Kevin
Your car makes a data point of 1.

Based on our past experience putting information in the judging manual using a data point of one is not a good idea (unless we say "one has been seen..."). It is not impossible, however unlikely, that your car was the only one that left St Louis with black plastic caps. It is also just as possible that half of production had black caps and half had no caps. Or any other combination or percentage is also possible. The issue we are faced with here is that the field of possible untouched original carburetors this late in the game is likely very small. So it is likely some wording that is less than definitive will be necessary.

[Mike E.]

Re: 1971 carb idle mixture limiters--original color

Additional info from the September-October 1970 Chevrolet Service News. Primarily at the top of the second page. FWIW Picture makes caps look black to me.

[Russ S.]

Re: 1971 carb idle mixture limiters--original color

Black and white photo. Red would look black on a B&W photo. Also, I don't think corvettes used the long style that is shown here.

Additional info from the September-October 1970 Chevrolet Service News. Primarily at the top of the second page. FWIW Picture makes caps look black to me.

[Mike E.]

Re: 1971 carb idle mixture limiters--original color

I thought the emoji would indicate tongue in cheek as I was referring to the color in the picture. I guess I should have made it more obvious.

[Russ S.]

Re: 1971 carb idle mixture limiters--original color

Or some of us are just "slower" than others and less technical.

I thought the emoji would indicate tongue in cheek as I was referring to the color in the picture. I guess I should have made it more obvious.

[Gary B.]

Re: 1971 carb idle mixture limiters--original color



Per Patricks request. A 1972 base motor, 3,000-mile car.
Look black to me, no emoji intended...
Gary B

[Patrick H.]

Re: 1971 carb idle mixture limiters--original color

Per Patricks request. A 1972 base motor, 3,000-mile car.
Look black to me, no emoji intended...
Gary B

Thanks. I don't have a good pic of the other low mile base motor car in my collection.
Since the one pictured only ever went on "one" trip on the road, I thought that the odds of them being present were high.

[Kevin G.]

Re: 1971 carb idle mixture limiters--original color

Kevin, they were black from the factory unless someone posts a red cap installed on a untouched car, I said prev. that all I remember were black caps, Red may have been serv. replacements but I cannot say as I never re-installed red ones or any after adjustments, in my dealership years.

Thanks for the post, Ed.

Kevin------


I have no doubt that the caps are original. In fact, since I cannot find that anything but the red caps were ever available in SERVICE, the black caps have to be original. However, I suppose it's still possible that some original carbs had red caps. Whether that's true, or not, doesn't change the fact that your black caps are original.

Thanks for helping to clear my confusion.

Kevin,
Can you send me that picture???
Gary B
gbozz08@gmail.com

Do you still need the picture?

[Kevin G.]

Re: 1971 carb idle mixture limiters--original color

Kevin
Your car makes a data point of 1.

Based on our past experience putting information in the judging manual using a data point of one is not a good idea (unless we say "one has been seen..."). It is not impossible, however unlikely, that your car was the only one that left St Louis with black plastic caps. It is also just as possible that half of production had black caps and half had no caps. Or any other combination or percentage is also possible. The issue we are faced with here is that the field of possible untouched original carburetors this late in the game is likely very small. So it is likely some wording that is less than definitive will be necessary.

Terry,

I just happened to have that picture with the caps shown, in my collection, and for some odd reason remembered seeing these caps. I was in doubt of their originality, after reading some of replies the above. Cool to find out that the majority reading do feel they are the caps installed at the factory.

In addition, it's a rare occasion I'm first at anything, so i'll take it!

Really, I do completely understand the necessity of locating others for the inclusion in one of the manuals.

[Gary B.]

Re: 1971 carb idle mixture limiters--original color

Pretty please.
Gary

[Kevin G.]

Re: 1971 carb idle mixture limiters--original color

Check your email.

Happy Holiday's!

[Kevin G.]

Re: 1971 carb idle mixture limiters--original color

Here's another picture, showing a hand written marking. Any thoughts

[Gary B.]

Re: 1971 carb idle mixture limiters--original color

I think it's just an inspection mark of some kind. Usually see all sorts of marks and ink stamps on the carburetors. Both Holley and Rochester. I occasionally (not real often) see a big red R on the side and frequently a black N stamped in the front. As carburetors were rebuilt, the solvents washed them away.
Gary B