Quincy Compressor Pumps

[David2van]

I happened to acquire two Quincy compressor pumps. I am new to these and have been trying to find as much info on them as I can. I do not know yet if I want to use one or both or really what I want to do with them. This is what I have so far discovered.

The first one is a Quincy QT7.5
Painted maroon and appears to be in good shape. Although a bit dirty it does appear that is working (I do not have a motor or any other way of running either pump). I will need a 7.5HP motor for this one. It is a Two-stage pump.

The second Quincy is a 230-32
Silver Blue in color this one has been harder for me to understand. It is a single stage compressor which will require a 5hp motor. The two towers on top is what had me confused at first, but after some research I believe that they are unloader towers. I also believe that I am missing a oil gauge on the back (appears to be broken off). I do not think the guy I got them from had it hooked up right, the line from the unloaders was never ran into the tank...??

I will try and post pictures, but this is my first post so I will try.

Any help or suggestion will be helpful. I would like to take them apart, but I want to do it right.

 

[My Old Tools]

QT is splash oiled like most compressors. 230 is pressure oiled and should live forever. Quincy website has literature downloads for most models.

 

[David2van]

QT is splash oiled like most compressors. 230 is pressure oiled and should live forever. Quincy website has literature downloads for most models.

Does that mean that the 230 is a better compressor than the qt7.5?

 

[matt_i]

They are both good compressors. The pressure lubed version is bomb proof.

 

[Brad J.]

The 230 is the one to keep. You can run it with a 3hp or 5hp and run the rpm's anywhere from 400 with a smaller motor up to 900 with a 5hp.

If your looking for a general household compressor I'd run it around 500 rpms and it would be quite and run forever.

The oil pressure gage is broken off. The brass block fitting on the side runs a copper line to the air tank.

The QT wouldn't interest me. No where near the same compressor.

 

[Brad J.]

Oh, something is goofy with the 7.5. I doubt it would run a 7.5 hp motor and only have one belt. I think it's a smaller setup. I don't know the QT series by the numbers.

 

[David2van]

I was going to use the QT7.5, but now I will have to rethink this. I am having trouble finding the manual and parts books. does anyone know which one I need for the model 230-32?

 

[redmondjp]

The '-32' in the model is referred to as the Record Of Change or 'ROC.' You need that when you look up the manual and also when you buy parts. It is essentially the revision number of the compressor.

The Quincy website is a bit clunky but they do have manuals for download.

Here is a link to the user manual for the QT:

www.aircompressorsdirect.com/manuals/quincyqtmanual_2.pdf

Here's a thread on another site about the 230 pump:

http://www.practicalmachinist.com/v...eed-help-identifying-parts-tool-gloat-266064/

 

[Brad J.]

I should say the QT7.5 would make more air from what I could find. But they are a cheaper pump.

I ran a 240 for a couple years just to run my paint guns. I had it set for 120psi with a 3hp motor. Ran quite and did a great job. Couldn't see a reason to need 2 stage for general air use. Ran cooler than my 2 stage pumps also. I found a new 325 pump for 200 bucks on craigslist is the only reason I'm not using it now.

The 7.5 says it is 7.5 hp but that 1 belt is weird to me. My 7.5hp 340 quincy has 3 belts. Seems kinda cheap but I believe that goes along with the QT series. When most guys have a QR series they want to show it off but when someone says QT it's like they have it in the corner with a bag over it's head.

 

[dkmc]

RUN the 230....darn good compressor that is.
The maroon one......not so much.

 

[brownbagg]

why do you want to take them apart, if its not broke, dont mess with,if its broke, toss it

 

[David2van]

I took one of the unloader towers apart and it was full of "something". I think it was cutter bees. Either way I think I need to take apart and clean up the 230 pump.

 

[G_P]

If the oil pressure gauge snapped off flush, you can tap a screw extractor into the snapped off bit of brass and it should back right out.

Just change the oil before running them. When I get a new to me used compressor, I change the oil and then use it for a short amount of time, then I change the oil again to remove as much crud as possible.

 

[David2van]

What tools would I be able to use with the 230 pump. I was thinking of getting a sandblaster. Is the 20cfm output more important than the fact that it has a max pressure of 100psi?

 

[930dreamer]

What tools would I be able to use with the 230 pump. I was thinking of getting a sandblaster. Is the 20cfm output more important than the fact that it has a max pressure of 100psi?

A blasting cabinet will be an air hog, short use will work but it will be slow going.

 

[cnc-me]

Not sure that's forced oil. Think they sold these as splash or pressure lube as an option.

 

[oilslick]

that pressure oil lubed one starts unloaded and will be quiet as hell with a good Solberg air filter. I would sell the maroon one.

 

[redmondjp]

that pressure oil lubed one starts unloaded and will be quiet as hell with a good Solberg air filter. I would sell the maroon one.

Yes, those two pumps are at opposite ends of the extreme - one is something they came up with to compete with consumer-grade compressors, and the other is, well, an industrial-grade compressor that you will never wear out in your lifetime.

 

[stimpy]

we had a 230 like yours in the shop and it lasted forever with proper oil changes and quiet too . and the constant running was actually cheaper than the run/ fill units as the starting spike is what made the cost . and its quiet too . we piped the inlet outside to draw air with a big filter on it

 

[David2van]

I went to the quincy dealer and obtained a parts list for the 230 pump. I plan on taking it apart to see where I stand. If the cost is not too high I will use the 230. If not I will sell it for parts and use the QT7.5 pump. At least that is the plan for now.......

 

[250]

I picked up a QR 350 last year and powered it down to a 5hp and stuck it in the basement. The mrs doesn't complain about the noise, though you can hear it in the living room/kitchen areas above. Redmondjp (and others) helped me get it going, won't need another compressor, ever.

 

[David2van]

I tore apart the 230 and the cylinders look great. I will need to sandblast the head and the valves.. looks about like the one the guy on youtube takes apart.
I was able to pick up 4 of the quincy tools on ebay.

 

[dkmc]

I would NOT sandblast anything!
If you really need to clean it that good, take it to an automotive machine shop and
have them "hot tank" it.

 

[David2van]

I understand not to blast where any seals and gaskets go but beyond that just "hot tanking" will not clean up these parts.

 

[David2van]

It's not so much that they need to be cleaned, but rather I need to remove rust. There was water in the head when I pulled it apart. more than likely they did not run it long enough to heat up the head to remove all water from it. There is rust on the valves just like on the one rebuilt on youtube and his fix for this was to sandblast them clean and rebuild them with new springs.
Can anyone give me reasons not to use the sandblaster?

 

[David2van]

I just picked up an older Dayton sandblaster and am in the process of getting it up and running. New gloves, seals, glass and I will be up and running. I was going to look for glass beads for it.

Any Advise from you who are a little wiser and more experienced then myself??