Power brake hose clamps, what color green?

[Rich P.]

Re: Power brake hose clamps, what color green?

Lets not forget the small 3/8" clamps same as the fuel line clamps being discussed here that are black and used on L-76 engines.

Rich

[Rich P.]

Re: Power brake hose clamps, what color green?

Ok, so this brings up a really interesting question.

If I get dinged for a point like this on the judging field where the 6 or 7 of us here on the TDB are having trouble coming to a quick and conclusive answer, HOW DO I DEFEND MY POSITION ON THE JUDGING FIELD? Especially when the color of a part is not called out in the TIM/JG?

Again, I'm going for Duntov, and I know I'm going to get somewhere between a 9 and 22 point deduct at Regionals or Nationals. Since I can only afford to lose 135 points total, if I lose 22 on paint, I need to save every point where I can.

Chris,

if I am reading this thread correctly. The ONLY thing that is not certin is the pt # for the power brake booster clamp as compared to the PCV clamp. AS ALL power brake booster clamps for 67 were black and most had a <U> stamping on them while a good portion of PCV clamps had a D stamping. Now they could have been switched at the factory when supply would run out like the discussion on the vin tag rivets used on j-clips.

Rich

[Dan H.]

Re: Power brake hose clamps, what color green?

Chris, you might consider listing those 'grey' areas and emailing your Team Leader and requesting a response or opinion on them. Keep the response in your JG along with red anotations/notes. Also, you'll get 10 more points added for your NCRS decal, battery cutoff, and fire extenguisher, so you've got 145 pts to do battle with! Most important is that you know the JG like the back of your hand so as to not lose any points do to a judging error. Good luck!
Dan

[Michael H.]

Re: Power brake hose clamps, what color green?

Lets not forget the small 3/8" clamps same as the fuel line clamps being discussed here that are black and used on L-76 engines.

Rich

I have a feeling this discussion is a long way from any conclusion.

I just crawled under the 66 and looked at the clamps at the fuel tank end of the fuel line off the sending unit. They are..... green. Same color as the clamps at the fuel pump end of the fuel line.

[Peter J.]

Re: Power brake hose clamps, what color green?

Mike,
My 66 is the same on fuel line ends. Only green left on fuel tank end is on the inside of the clamp.
Pete

[Alan D.]

Re: Power brake hose clamps, what color green?

OK some input from the 64JG; 3829058 appears in S J50 sheet 3.00 and S L76 sheet 3.00
Unable to find the clamp at fuel pump
3786276 appears in S 8 sheet B3.00 - these are the clamps at the fuel tank going to the line.

No mention of color is made in the JG about the PB clamp (page 123) nor the fuel tank end either. Judges do know the ends SB square not rounded got hit on that one (had correct clamp, but forgot).

[Brian M.]

Re: Power brake hose clamps, what color green?

Don't you think that there was more than 1 OE vendor for these clamps?

[Michael H.]

Re: Power brake hose clamps, what color green?

OK some input from the 64JG; 3829058 appears in S J50 sheet 3.00 and S L76 sheet 3.00
Unable to find the clamp at fuel pump
3786276 appears in S 8 sheet B3.00 - these are the clamps at the fuel tank going to the line.

No mention of color is made in the JG about the PB clamp (page 123) nor the fuel tank end either. Judges do know the ends SB square not rounded got hit on that one (had correct clamp, but forgot).

Some info from the GM parts book shows that the 3829058 has a 5/8" ID and the description is "black paint".
It's shown in group 1.166 and 1.750, both of which describe/show the PCV system hoses.
The 3829058 is also shown in the 66 AIM for use on the power brake booster vacuum hose. I have several of these NOS and they agree with the description. (other than the fact that the black actually looks more like plating than paint)

The 3786275 clamp is described as having a closed dia of 33/64th" and an open dia of 19/32". The finish is described as "phos". Since there is no detailed description of the type/color of "phos", we can only guess at it's actual color from that description. However, I have several NOS 3786275 clamps and all are dark, flat green.
The 3786275 was to be used on the fuel line rubber hose connections at both the tank end and the fuel pump end.

[Chris E.]

Re: Power brake hose clamps, what color green?

So, sounds like Michael votes for "green"....anyone else?

[Michael H.]

Re: Power brake hose clamps, what color green?

So, sounds like Michael votes for "green"....anyone else?

Green ONLY for the fuel line clamps. Black for the power brake hose and PCV hose clamps.

[Chris E.]

Re: Power brake hose clamps, what color green?

Green ONLY for the fuel line clamps. Black for the power brake hose and PCV hose clamps.

Sorry Michael, misread your previous post.

Ok, so black it is.

My next question is this. How do I prove that on the judging field?

[Harry S.]

Re: Power brake hose clamps, what color green?

Michael, not trying to hijack this thread, but for a 63.... Best I can recall there was no clamp on the PCV hose, also the clamp on the P/B hose started at the end of 63 production. I just can't recall what the name of the first style clamp used on the P/B hose starting in 63. Please bang away at my memory.

Thanks

[Michael H.]

Re: Power brake hose clamps, what color green?

Michael, not trying to hijack this thread, but for a 63.... Best I can recall there was no clamp on the PCV hose, also the clamp on the P/B hose started at the end of 63 production. I just can't recall what the name of the first style clamp used on the P/B hose starting in 63. Please bang away at my memory.

Thanks

Harry,

That's correct. No clamps were used on the PCV hose on 63.

For 63 with power brakes, the early cars used a round wire spring ring style clamp, like the ones used on heater hoses. (called Corbin clamps) However, that was changed at some point in 63 production. Later 63's used the black 3829058 flat steel clamp, the same clamp that was used on at least 64-67.

[Scott S.]

Re: Power brake hose clamps, what color green?

I'm for leaving them alone, aren't they the same as the PCV clamps?

Brian,

I believe you are correct, the power brake booster hose clamps are the same as the PCV clamps, at least for 1966-67. GM 3829058 Clamp is called out at the power brake booster hose location in every AIM from 1963-1967.

Beginning in the 1966 AIM, and continued in 1967, the GM 3829058 Clamp is also used at the PCV Hose location (UPC 6-C3).

[Scott S.]

Re: Power brake hose clamps, what color green?

Nope - the power brake vacuum hose is the only usage on the whole car for the #3829056 clamp - the PCV hose used #3829058.

Ahaaa,
The '67 AIM confirms John's comments, 056 for the booster hose and 058 on the PCV hose .
The '66 AIM shows 058 for both.
HaND

John and Mike,

If you look closely at your 1967 AIM, or better yet, scan page UPC J50-A3 and then enlarge it, I think you will see that what looks like a "6" at the end of the Item 2 Clamp part number is actually an "8", making it the same part number as called out in the 1966 AIM. The "8" in the '67 AIM is slanted to the right, as if it was italicized (e.g., "8"), and the uppermost right-hand portion was cut off during the copying process, making it appear to be a "6".

If there has ever been a part number GM 3829056, I have not yet been able to find it.