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AC Compressor size
Posted: Wed Dec 01, 2021 2:03 pm
by MRLAW
I'm hoping someone can help me out, I have a 2nz-fe engine which is a 1300 cc and I'm in the process of changing the AC compressor. I've identified a compress which would be a direct bolt on on my engine but it's from a 1800 cc engine... My question is that seeing as how this is from a larger engine which makes it a larger compressor in terms of capacity, would its functionality be affected if I install it on my engine?
Re: AC Compressor size
Posted: Wed Dec 01, 2021 6:03 pm
by Cusser
Doesn't rpm = rpm ????
Re: AC Compressor size
Posted: Wed Dec 01, 2021 7:48 pm
by Tim
Cusser wrote: ↑Wed Dec 01, 2021 6:03 pm
Doesn't rpm = rpm ????
Is R12 temp the same as R134a temp?
As long as the system is designed to use the style of pump. And they can mount it. I don't see much of an issue.
Re: AC Compressor size
Posted: Thu Dec 02, 2021 10:34 am
by MRLAW
That's what I thought because I'm doing a conversion from the solenoid back to the clutch type compressor. So my technician is saying that adding the compressor from the larger engine would cause a compressor failure in the long run... He didn't really give me a sensible explanation as to why it would but he was referring to the system pressure. My conclusion is that he's probably not interested in the project
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Re: AC Compressor size
Posted: Sat Dec 04, 2021 7:56 am
by JohnHere
MRLAW wrote: ↑Wed Dec 01, 2021 2:03 pm
I have a 2nz-fe engine which is a 1300 cc and I'm in the process of changing the AC compressor.
Sounds like a Toyota engine installed in a Yaris or possibly a Corolla, many of which use Denso compressors.
MRLAW wrote: ↑Wed Dec 01, 2021 2:03 pm
I've identified a compress which would be a direct bolt on on my engine but it's from a 1800 cc engine... My question is that seeing as how this is from a larger engine which makes it a larger compressor in terms of capacity, would its functionality be affected if I install it on my engine?
I, too, don't see a problem with mounting a larger displacement compressor on the smaller engine if everything lines up and it fits. Presuming that the system is charged correctly (refrigerant and oil) and everything else is in proper order, the operating pressures (and cooling) should remain the same regardless of the compressor's displacement.
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