Has anyone used Hot Shot or Hot Shot Two as a replacement refrigerant in place of R12 in any Corvette of especially Mid year Corvette? if so is it viable?
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Dan Young
65, 67 Duntov x2
66 bowtie x 2
71 LT1 TF
90 ZR1 McCelland
03 Anniverary
06 Z06 -
Re: Hot Shot Two refrigerant
Dan, I am not an AC expert but would not use anything but R-12, it is available if you look (PM me). I have no idea about the product you mentioned but I know some of the replacements have LP (or something like that) in them & could be combustible. Good luck, Don H. -
Re: Hot Shot Two refrigerant
Thanks Don - That's why I have asked the question. I have a source for R12 but very expensive. Hot Shot has been used in commercial applications as a R12 replacement as well as a R-134 but wanted to know if anyone has used it in a Corvette. I believe you are right - I'll stick with R12. Thanks againDan Young
65, 67 Duntov x2
66 bowtie x 2
71 LT1 TF
90 ZR1 McCelland
03 Anniverary
06 Z06Comment
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Re: Hot Shot Two refrigerant
Hot shot 2, or any other commercial refrigerants that are designed to be used in refrigeration are NOT suitable for automotive A/C applications. There are many R12 replacements but they are intended for use in Commercial refrigeration, I have several of the replacements and have looked into it. There is a hydrocarbon refrigerant being marketed, R1234a I believe, I've seen it at Carlisle but I know little about it. A note about hydrocarbon refrigerants, they are coming, they are used widely in Europe with success. R134a won't be here forever, talk about phasing it out has already begun, along with a few other refrigerants that were supposed to be long term solutions to the CFC problem. If our C5, 6 and 7's are around in 40 years there will be a debate about what should be used to replace R134a.
Contrary to what many believe R134a is a fine refrigerant that works well in auto A/C applications, even corvettes if the retrofit is done properly, it is an involved process and not inexpensive. My '72 has been converted and it runs just fine. Oh, and it's a big block, not that they create more cabin heat...
All that being said, if you don't want to retrofit and have a LEAK FREE system use R12. Nothing wrong with that. Have fun!!Comment
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Re: Hot Shot Two refrigerant
Thanks Tom!Dan Young
65, 67 Duntov x2
66 bowtie x 2
71 LT1 TF
90 ZR1 McCelland
03 Anniverary
06 Z06Comment
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Re: Hot Shot Two refrigerant
Finding R12 is usually as easy as looking at your local craigslist or facebook marketplace. If you dont easily see any current ads, put your own "Want To Buy" and offer $15-20 a can. You will get all you need in a day or two.
Its amazing how much is still sitting out there in garages that no one has a use for anymore.
Brad Hillhouse
37766Comment
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Re: Hot Shot Two refrigerant
All kinds of r12 on ebay.Comment
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Re: Hot Shot Two refrigerant
Thank you Dick, at least I'm not alone on this.
Seals, oil (and an oil flush if you have the means), and a POA adjustment (if applicable) is probably the minimum to do a thorough job although you could get away with less. I did much, much more only because I had no choice.
EDIT: Wasn't sure what R744 was so I looked it up. Don't bother looking into it, not a DIRECT replacement for R12. Would be very dangerous, pressure wise.Comment
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Re: Hot Shot Two refrigerant
thanks Brad. I bought on ebay. however, nothing less than $29/canDan Young
65, 67 Duntov x2
66 bowtie x 2
71 LT1 TF
90 ZR1 McCelland
03 Anniverary
06 Z06Comment
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Re: Hot Shot Two refrigerant
I also went directly to 134 and did not do ta thing but charge the system. The auto parts guy did sell me a o-ring kit that only addressed outer o-rings. There are 5 and 6 that are not in the kit. The 2 ceramic seal, 2 main case, the oil pick up tube, and in some the relief valve on the back plate.
About hot shot, it was propane and yes it is flamable along with the oil in the engine and the gas in the carb.
It was not uncommon to see a bit of propane put in the system.
My friends and his wife came to my sons shop when she was picking him up from his shop. She was pink and tho outside temp was 115 F. They had a 45 min drive and she already went thru 1/2 hour without air.
The pleaded for me to do something, it was a BMW with R-12. I only had R-134 and said it is not advised to mix. The unit (AC) shut down because of low pressure. I gave it a shot of R-134 and bingo all was cool.
That lasted till they traded the car a few years later and was still cooling!!
I don't think mixing is as bad as it's made to be. I mixed in my central unit on a sunday with a house full of people, put R-410 over R-22. All has been great for almost 2 years now.
BUBA work that had good results in a pinch, and is still working.
Was invited on a boat with 2 engines. Reason I was invited was I was a mechanic. The best engine quit and we came back on the bad engine. Used cooking oil sun tan lotion and whatever was slippery to get back. And no, did not pee in it as we had to do in the radiator when the cars overheated in the desert.
I don't say it's good, and sometimes it's called survival and with good results.
DomComment
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Re: Hot Shot Two refrigerant
Dom, I seriously question dumping R410a over R22. Download a PT chart for each and your knowledge of pressure temperate relationships will kick in and show you what a mistake it was. At BEST you gave the system a Balsa crutch to a failed steel beam. That said, I hope it works for you.
EDIT: My God, I hope I've been duped. re-read it and hang my head.... Have fun!!Comment
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Re: Hot Shot Two refrigerant
Tom,
Thanks, it did work as I have 2 central units in my house. Didn't want to do it, but also didn't want to mess up a party with out of town people and all the food!! been working the best of all. As good as the the new 410 unit I have for the other half of the house.
Works and I don't care as long as i cools. 2 A/C friends said I needed a new unit about 18 years ago and the original to the 1978 house is working perfect, and I don't have to charge it every year.
!0,000 fine here for screwing up A/C business!
DomComment
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