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Re: 1972 BB Convertible in Atomic Orange Color

Posted: Apr 21st, 2017 7:14 pm
by vito
This compressor is an open type, meaning that the crankshaft protrudes through the housing and is external driven. I have had this in a bag since I removed it to keep it clean and somewhat air tight. The compressor didn’t mount correctly last time so I am going to figure out why.

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This is what the front brackets look like. Notice that I am missing the rear compressor ear. This means that I need to rotate the compressor. But which way? The oil fill plug cannot go lower than 3 or 9 o-clock. So do yourself a favor and put it on the fender side. This will make adding oil easier.

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Oil fill to the outside, and the suction service valve will mount to the top rear.

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After I mounted the front and rear brackets the problem was obvious.

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And here is the problem. You need the correct length spacers. The compressor pulley needs to be inline with the other pulleys.

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I measured all the spacers and this is what I found.

Large spacer. Design length: 1.875, actual length: 1.770
Small spacer. Design length: 0.680. actual length: 0.650

so off to the store.... :bang:

Re: 1972 BB Convertible in Atomic Orange Color

Posted: Apr 24th, 2017 3:04 pm
by vito
Since I had the cooling system open, it is time to flush out the motor, and radiator. I use to have adapters like this so I can attach hoses and run them outside.

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The new spacers came in for the a/c compressor, unfortunately the larger ones came in 7/16" vs the 3/8" that I need. I should be able to use them for a while until I go states side again.

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I always thought my p/s pump was tilted backwards.

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And of course rust.

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How hard is it to put a bracket on a drill press and drill two straight holes.

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He only had one job t do.

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Heated the metal and re-bent it, also filled the void below the screw. Now it is perfect.

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If all goes well, the front of the engine will be assembled this week.

Re: 1972 BB Convertible in Atomic Orange Color

Posted: Apr 24th, 2017 8:21 pm
by vito
Well, this sucks...I reassembled the P/S bracket and pump, tried to turn the pump by hand :ack: If I didn't know better, I would say it was starting to seize. It felt like turning a SBC without spark plugs. :crazy:

This car has been sitting for 6 years. wtf. I need some time away :rant:

Re: 1972 BB Convertible in Atomic Orange Color

Posted: Apr 25th, 2017 2:05 am
by vito
Good news is the pump turns freely, now I hope it just works :willy:

Re: 1972 BB Convertible in Atomic Orange Color

Posted: Apr 25th, 2017 4:21 pm
by rbryce1
Did you put any PS fluid it it? Not much, but enough to maybe lube the bearings and seals. It may have really dried out in 6 years of non-use.

Re: 1972 BB Convertible in Atomic Orange Color

Posted: Apr 26th, 2017 2:57 pm
by vito
Yup, I had fluid in it. just a bit dry I guess.

Re: 1972 BB Convertible in Atomic Orange Color

Posted: Apr 26th, 2017 9:38 pm
by MaineVette
That's odd that your PS pump wasn't turning smoothly, there isn't in there to bind up. I'm guessing it just got dried out and one of the vanes got stuck.

Glad to here it's spinning freely now. :cheers:

Re: 1972 BB Convertible in Atomic Orange Color

Posted: Apr 28th, 2017 6:47 pm
by vito
Learned something new today. I didn't know that GM Goodwrench no longer exists. GM discontinued it in 2011 and replaced it.

So much for getting original parts from them. Those of us with big blocks, good luck finding p/n 3952336. This is your crank to water pump belt 7/16 - 31.75. The replacements are 31.50 that are narrower so if fits lower in the pulleys.

I did find one belt but the guy must know that it is discontinued and trying to sell it for $110 :willy:

Re: 1972 BB Convertible in Atomic Orange Color

Posted: May 1st, 2017 7:44 pm
by ArtGle
I have a 72 Coupe (sb, at) that's Ontario Orange currently.
I'm going BLUE (not sure which blue yet).
Bought a Saddle Tan interior.

My C5 is Nassau Blue with Saddle Tan interior.

Re: 1972 BB Convertible in Atomic Orange Color

Posted: May 2nd, 2017 5:54 pm
by vito
Hi Art,

Welcome to the forum.