A/C muffler

[John H.]

Re: A/C muffler

A significant percentage of Chevrolet part drawings show at least one "optional construction", sometimes more than one, to get secondary suppliers on board or to accommodate a supplier's existing tooling and facilities instead of spending tooling money for a supplier to incorporate a feature not essential to function or installation. In those cases where an "optional construction" is shown, the Assembly Manual will only show the initial released design, and the illustration still may not be accurate to the details of the part print - it's just an illustration, not a part drawing.

I worked in the department that handled those negotiations between suppliers and release engineers (Chevrolet Production Engineering) for about a year, so I'm familiar with the process.

[Dale C.]

Re: A/C muffler


Dale

[John H.]

Re: A/C muffler

Me too . Assembly Manuals are handy, but they're not like Jepp charts .

[Dale C.]

Re: A/C muffler

Got one.
Dale

[Scott S.]

Re: A/C muffler

Got one.
Dale

One with the block style?

Let's see it!

[Dale C.]

Re: A/C muffler

Scott
I'll send some as soon as I get it. Found another one in my searching. I told him to hold it till I checked out the first one.
Dale

[Dale C.]

Re: A/C muffler

Scott and Wayne
Here are some pictures of the block type I got. It's what eveyone thinks is correct so I'll probably go with it, for judging, but there is still that flicker of doubt about which is correct.
Merry Christmas to all,
Dale

[Dick W.]

Re: A/C muffler

I do not think that you will have any problems with that muffler when you have it judged. From my experience you would have taken a couple or so point for the other one.

[Wayne M.]

Re: A/C muffler

Scott and Wayne
Here are some pictures of the block type I got. It's what eveyone thinks is correct so I'll probably go with it, for judging, but there is still that flicker of doubt about which is correct.
Merry Christmas to all,
Dale

Dale -- glad to hear you were able to get the block type. I even see the "Weatherhead" stampings on the Schraeder caps and the body of the block. (at least these are what's on my service unit .)


Nice to see the side-by-side comparison of the geometry -- obviously designed for the same hose orientations.

[Dale C.]

Re: A/C muffler

Wayne
Looking at the old threads, was it resolved on the color of the valves? Do they have to match the silver of the muffler or is the brass OK?
Dale

[Dick W.]

Re: A/C muffler

Would expect to see the caps zinc or cad plated

[Dale C.]

Re: A/C muffler

Dick
Thanks
Dale

[Scott S.]

Re: A/C muffler

Looks great, Dale! I pity the judge who tries to say it's the wrong one now!

If you think of it, it would be great to see some pictures of it on the car (not to mention a few pictures of the car itself) after it's installed.

Merry Christmas to all,

Scott

[Wayne M.]

Re: A/C muffler

Would expect to see the caps zinc or cad plated

Here's a few views off my '82-purchased "block-shaped" ...139 service muffler -- was installed but not hooked up to Freon, so the coating deterioration is due to underhood environment for 15 years. Plating is wearing thin on the outside dome of the caps.

Inside of caps (at top) shows only brass, so I'd guess that they were coated in an electrolytic bath of Zn or Cd hung on posts.

Knowing that shiny brass was underneath, one would be sorely tempted to polish them .