C2 (C1, C3?) tire valve caps -- Dill markings

[Peter L.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

Michael - I hope not because both the DILLs as shown in Wayne's posting and and the Schrader as shown in my posting are "hard black plastic." In fact most of the valve caps I have seen fit that description. Pete

[Michael J.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

Michael - I hope not because both the DILLs as shown in Wayne's posting and and the Schrader as shown in my posting are "hard black plastic." In fact most of the valve caps I have seen fit that description. Pete

I dunno, the ones that came on my '67 when I bought it were chrome with pretty little C2 crossed flags on them. Guess that will lose you points.

[Gary C.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

Wayne, Pete, etal - attached copy & link to previous post with GM engineering standards on valve stems and Valve Stem Caps. Enjoy, Gary....
https://www.forums.ncrs.org/showthread.php?t=73871

[Peter L.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

Gary - I knew you would come through "to save the day." Now that we know there were N+1 (for those of us still using the OLD math, N=4) different TIRE VALVE CAPs used by GM, what's a Judge to do.

As I keep saying, I love learning new things about old cars.

Pete

[Jack H.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

I certainly believe that (Dill was not the only supplier)! For purchased parts, it was GM policy to have more than a single source of supply.

I can remember when I was working for Texas Instruments, the 'jungle' of sign-off approvals a supplier had to go through to secure a sole source approval... It was SO lengthy and complex that it just wasn't worth the effort!

[Peter L.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

Michael - I don't see the ones that came on your 67 on Gary's GM Engineering Standards drawing; but perhaps if you paint them black and those Judges don't pull out their magnet to check them you might be OK ; but it's risky and you could lose points, so you might consider another course of action. Pete

[Gary B.]

Follow-up question to Gary C.

Wayne, Pete, etal - attached copy & link to previous post with GM engineering standards on valve stems and Valve Stem Caps. Enjoy, Gary....
https://www.forums.ncrs.org/showthread.php?t=73871

Gary,

Is there a higher quality version of that JPG image somewhere? I can't make out any of the text as it gets too fuzzy when I zoom in.

Gary

[Gary B.]

Dill markings; big font or small on 2008 caps?

Wayne - Spring thaw up there?

I have a box of 500 DILL 627 Valve Caps dated MAR 20 '08 and I checked all 500 of them and no alphanumeric characters at 3 o'clock. Not sure what it means if anything, just the facts.

You are going to cause some more trouble for those "seasoned" black had folks. Now they will have to carry a magnifying glass along with their "broach - buster, very bright flash light, magnet, and mirror etc.

Pete

Pete,

Do the caps in your box dated Mar 20, 2008 do the caps have the bigger font size DILL or the smaller font size?

Gary

[Peter L.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

Gary - Small font. Pete

[Gary B.]

At least 3 versions of DILL

Pete,

So that means there were at least 3 versions of the DILL cap:

1) One with the small font size, with the alphanumeric code at 3 o'clock;

2) One with the small font, with no alphanumeric code at 3 o'clock;

3) One with the large font, with no alphanumeric code at 3 o'clock.

Yes?

Hopefully, Jeff Ashen will chime in sometime soon to tell us about his 20-year experience hunting for DILL caps.

Gary

[Patrick T.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

I bought a new 2003 Z06 and they have Dill 627's on all the tires. I certainly was surprised. PT

[Mike M.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

Hi Gary
Sorry, I can't make it out, what is the date of that document?
Thank you and HaND

[Gary B.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

Mike,

The date on the valve cap document posted by Gary Chesnut is June, 1968.

Gary

[Jeff A.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

Not that I consider myself an valve cap expert,
but from what I had observed hunting for these things for many years is this.

Small font with batch code - oldest
large font with batch code - 80's
No batch code - 90's and later
The dill 627's came in black, gray, and blue colors

I am sure that there were quite a few suppliers back in the day?

to tell the truth - lately all I grabbed was the dills, because those seemed to be the ones everyone wanted.
Wish I had watched more closely - likely i missed a lot of the Schrader ones.

[John H.]

Re: C2 (C1, C3?) tire valve caps -- Dill markings

Until the TPMS sensors became required by law, virtually ALL GM and Chrysler products came with Dill 627 caps; I routinely removed them from my assigned company cars and my wife's company lease cars and replaced them with generic caps up until two years ago.