Earlier '66 AC Compressor Questions

[Mike B.]

Re: Earlier '66 AC Compressor Questions

Thanks Harry, Yes the STV I purchased is correct for my '66 and it is an absolute beeyaahhchh to install. Glad you posted that. Thought it was just me! Mike

[Mike B.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Believe me Ric, I'm no Computer Guru either. Harry Sadlock just inserted a post about the STV bracket about midway in the "Hybrid View" stack. It seems those brackets are difficult to install (mine is) and they might not have been re-installed after service?

Thanks for any photos you can send me. No rush. Just looking for closeups on that brace bar and bolt headmarks.

By the way Ric, did you see your compressor muffler shown in Page Campbell's post just above on this page?

Well, I see I'm at the bottom of pg.3. I sure hope this posts when I click this thing Mike

Edited- "Ohh-Dark-Thirty", early Monday morning. Hey Ric, you are now one of the top AC guys on this thread! You've owned 6 Midyears all with factory AC? I know who I'm going to with AC questions.

[Mike B.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Yayyy! It posted in order continuing pg.3 So far so good. Now to report some interesting finds about our early '66 AC compressor research:

1. The '65 Frigidaire label was printed in black & white on the top half and showed 3.75 lbs. of R-12 charge. Later in '65 a printed black correction tape covered the 3.75 with 3.00. The lower half of the Frigidaire label was printed in orange and began with the sentence "Refrigerant Fluid Under High Pressure...." (See attached photo)

2. Early '66 Frigidaire labels were also printed in black & white on the top half and showed 3.75 lbs. of R-12 charge. The lower half is printed in orange as the '65 labels but the 1st sentence is different. It reads "R-12 Fluid Under High Pressure...." (see attached photos)

3. I'm still researching when the '66 Frigidaire labels began changing to the refrigerant caution printed in green (see attached photo) Mike

[Mike B.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

OK, now this is getting refreakingdiculous! I have no clue why 2 of the vertical shots posted upside down Gremlins again, so you'll have to tilt your head. As far as I know, once you've sent a post with photo attachments, you can't edit the photos or the script.

But good news. All 4 photos posted in order of the description.

Top photo: May 5th '65 compressor (1965 Vette June car)
2nd from top: Aug 2nd '65 compressor (1966 Vette Sep-Oct car?)
3rd from top: Aug 24th '65 compressor (1966 Chevy Sep-Oct car?)
Bottom: Dec 3rd '65 compressor (1966 Vette Dec-Jan-Feb car?)

So the earlier '66 Frigidaire labels appear to be a little more unique vs. the more common green cautioned type used throughout most of the remaining production year. Mike

[Randy G.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Picket it up from Dom yesterday. He does an amazing job.

[Mike B.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Wow Randy, That's a beauty! That's kinda what started this thread. Looking for the correct casting number and date. Choosing a correct Frigidaire label type and date and which model number to choose. Once I feel I've got the right one, It's going to Dom's so he can do his magic.

Nice looking compressors with reported peak performance! Mike

[Peter M.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Mike,
Sorry I have been so slow getting back.
This compressor is off a 1966 caprice I owned along time ago.
The brace is from my 67 corvette.
Kind regards.

[Mike B.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Good Evening Peter, Awesome post! And I sincerely mean that. You've answered my longtime question as to if the Big Block AC compressor brace rod that I purchased a while back was genuine. Now I know that it's at least from a '67 427 car. They are spot on! The '66 & '67 brace rods carry different part #s. So far, I think they're the same. Here's a comparison between our 2 brace rods. I've got them oriented to view side by side. I'm sure they won't be once I click this thing. Let's find out. Thanks again Peter! Mike

[Mike B.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

OK Guys. I find this one very interesting! A few days ago Page Campbell posted some shots of an early '66 Big Block AC compressor with a casting date of H 2 5 (August 2nd '65). At first I thought that it had been in a fire. There's 2 scorch marks on the Frigidaire label. But the more I looked at it I began to wonder if they were hot spots due to internal case heat?

This evening Peter Miller posted shots of a compressor he had from his '66 Caprice. It's casting date is also H 2 5! And it has those same two hot spots!

What do the experts think? Are these distinct marks on two separate early '66 compressors be due to case overheating? What do you think Dom? Are you out there?

Anyway, I thought this was quite an interesting coincidence. Check out the photos! Mike

[Domenic T.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Mike,
Yes, I am following. Not hot spots in my opinion. Nothing there to get hot inside, BUT it looks like the marks from the strap that holds the muffler.

Dom

[Mike B.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Dom, I knew you would know. The Caprice compressor would've had that muffler strap. So that was most likely chafing. But it was an interesting coincidence with the dates and all. Here's a shot of a passenger car's muffler strap for those of you who've never seen one. Thanks, Mike

[Mike B.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Good Morning Peter, Thanks for sharing those shots of your Caprice compressor. I've got 3 questions about it that your photos don't show:

1. On the Frigidaire label, can you make out the numbers in the "CODE NO." box just to the right of the model #6550133?
2. Does the compressor have the early type design clutch hub with 6 holes? Or does it have 3 slots (windows)?
3. Does the compressor have the early vent design (slot with 440#)? Or does it have the small hole on the center with 440#?

I'll add this info into the current research I'm compiling. Thanks again Peter! Mike

[Peter M.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Mike,
I can't read the date code with enough certainty to post it. Where it's stored is hard to get at but if you really need it I can try and dig it out.
I pirated the clutch for a 66 SS396 I had years ago and my memory is not that good.
It has the slotted relief valve.
Kind regards

[Mike B.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Not a problem Peter. Thank you for what you posted. It was great! Mike

[Mike B.]

Re: Earlier '66 AC Compressor Questions (Part 2 )

Good Morning Ric,

I sent you a PM.

Mike