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bushbean
06-28-2010, 01:25 PM
Is this good enough for r134 conversion?

http://www.harborfreight.com/25-cfm-vacuum-pump-98076.html

LX-incredible
06-28-2010, 03:59 PM
That's a vacuum pump... I use a similar one. You will still need to disassemble, flush, replace the o-rings, and add the correct oil to the system for good results... It's really not all that much extra work.

nswst8
06-28-2010, 04:56 PM
I agree with Angus here. It is really not alot of work to properly convert these to R134a. It will make all the difference.

Dr_Snooz
06-28-2010, 06:04 PM
It should work fine. It's just like mine.

...but half the price. :(

bushbean
06-30-2010, 05:05 AM
The 2.5 CFM Vacuum Pump is $80. Harbor also sells a Two-Stage 3 CFM Pump for almost twice as much. So I was wondering if there's any reason for a home mechanic to buy the 3 CFM one instead of the 2.5. These prices are dirt cheap. I recall a mechanic friend of mine telling me that his cost a couple hundred bucks and it was used.

Oldblueaccord
06-30-2010, 05:22 AM
The 2 stage is prolly more robust then the other one.

I would watch if you use it for overheating etc. Its prolly fine for home use once a year where as a pro one is made to be used 8 hours a day.

Do a comparison search on some other known brands and see what the specs are.

I got the cheap one that uses compressed air. Its ok but it uses a TON of air and I really ran my 5hp 60 gallon compressor hard like continious for a 20 min vacuum down.



wp

DBMaster
06-30-2010, 07:11 AM
How many times are you going to need this thing? The two times in my life I needed a vacuum pump I rented a commercial grade at a local rental center for $10.

bushbean
06-30-2010, 09:03 AM
I wouldn't even know where to find one for rent.

nswst8
06-30-2010, 09:48 AM
I wouldn't even know where to find one for rent.

One of those we rent anything places.

Goggle "tool rental"

Dr_Snooz
07-01-2010, 07:30 PM
How many times are you going to need this thing? The two times in my life I needed a vacuum pump I rented a commercial grade at a local rental center for $10.

I use mine at least once a season. If you get a pin-hole leak that you can't find, you'll be using it a lot more than you know.



I got the cheap one that uses compressed air. Its ok but it uses a TON of air and I really ran my 5hp 60 gallon compressor hard like continious for a 20 min vacuum down.



wp

Those things are a scream. I used one with a pancake compressor. It didn't come close to pulling vacuum but did get my compressor real hot. I had a good laugh and took it back.

DBMaster
07-02-2010, 07:57 AM
Yeah, well if I get a leak I can't find I would just take it in to a place that has a refrigerant "sniffer." I like to be self reliant, but I have my limits. LOL.