1973 Gold Duster
New Member
I have a 1973 duster with factory ac and want to convert to r34. What thing do I have to do. Like what parts do I have to replace ect.
I have a 1973 duster with factory ac and want to convert to r34. What thing do I have to do. Like what parts do I have to replace ect.
You also need a pressure limit switch on the dryer.
Correct for R134 limits?I think 71 and up have those already.
Well, with R134 it needs to be an over-pressure limit switch also or you can blow the compressor like a hand grenade.As I understand, the purpose of the switch is a low pressure cut off in case the system starves on the low side. I think zero is zero with either refrigerant.
Take the compressor off and dump the mineral oil out of it, not compatible with 134 freon. Dump a couple oz. of the new PAG oil in, work it around and dump that out too. Ready to reinstall the compressor, but first clean out the rest of the system and install a new Reciever Dryer. Couple of ounces of Pag oil in the empty compressor too, check how much pag oil to use.
Front condenser can be rinsed out with a fast dry brake parts cleaner and blow it out, then reinstall with new O-rings.
Buy 134 conversion fittings online or at local parts store.
If your compressor is questionable, now is a good time to put on a new mopar reman compressor so the system will work well. Check the magnetic clutch to see that it is functuoning too.
Reassemble, and pull down a full vacuum on the system and close it off for a half hour to make sure it does not leak down. Then recharge with the recommened ounces of 134 freon for your system, same as what it took for the r12.
I didn't on mine. Been like 5 years ago. Still works.I thought you are supposed to use about 85% of what the R12 amount. Should you replace the hoses?
I want to know the best way that will last1973 gold duster
Do you want to know the correct way or the "down and dirty" way?
I am a Certified A/C tech for auto, commercial, and residential. I have done both ways, on my stuff. I only do it the right way for a customer.
Why do you want to convert it? R 12 works better than 134 does!
Yikes. This is why I don't answer AC question on an open forum. Just because something is sold/available does not make it a good product for an application. If you want my recomendation PM me. I will give you my phone number, as I need to ask some questions.I would use RedTek.
Yikes. This is why I don't answer AC question on an open forum. Just because something is sold/available does not make it a good product for an application. If you want my recomendation PM me. I will give you my phone number, as I need to ask some questions.
I never said it didn't work, There are several refrigerants that will work. This is why I asked the OP if he wanted to know the right way, or the "down and dirty way". I will only reccommend the right way, and will not do that on open forum, because of the statements like "I did it this way with no problems".Yikes. Maybe I should have PM my opinion of something I’ve used several times without issues. Thanks for the flaming reminder that everyone has an opinion.