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Any retained their AC with rb25 swap in a r32 ?

Rb25orange
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Rb25orange Enthusiast

Rb25orange

Posted
Posted

I am in process of refitting the aircon in my 32 With rb25 in it, swap was done by previous owner. 
So heating and cooling lines have completely been deleted including compressor, I am aware that I need a rb25 compressor but what about the lines for both heating and cooling and wiring ?

Really appreciate any help, before I go to a ac place.

thanks

GTSBoy Grand Master

GTSBoy

Posted
Posted
On 9/9/2021 at 5:21 PM, r32-25t said:

You need an r32 compressor and lines and everything else 

Well..... So long as the R32 compressor doesn't have a problem with belt alignment, then yeah, sure. I don't know if there is a belt problem with a 32 compressor on a vanilla 25. I do know that the R32 compressor won't work against the Neo's belts. Well, not without having to do something about pulley alignment and/or different pulleys, which could all be possible, with some work.

I put a Neo into my R32, used the Neo/34 compressor, got an airconditioning workshop to cut and shut the refrigerant lines (R34 ends at the compressor onto the original R32 lines, welded at the alloy pipes).

I also had to f**k around endlessly to sort out the different pressure switch and the different way that the R34 ECU talks to the AC controller. Was without air for a couple of years until we got that sorted out. Not that it matters because I seldom use the air con anyway.

Oh, you also have to convert to R134a with the R34 compressor to, which means different receiver-dryer and ports and some other stuff.

Rb25orange Enthusiast

Rb25orange

Posted
  • Author
Posted

Its a rb25det s2, so thinking of getting the compressor for which came on it originally, lining up things shouldn’t be a problem in that case. 
 

Which I am more curious about are the lines.

will I need lines out of 32 or 33, I know it be different fitting here and there, but someone who has already gone through all this would be bonus. 
 

@GTSBoy

please correct if wrong, all the things mentioned below are I figured will be needed as they are currently non existent.

r32 line from drier to condenser 

1 ) Line from condenser to compressor? ( I believe fitting on condenser should be r32 ones and compressor side might be different)

2) Line from compressor to dash cooling unit ( same as above I think mix and match?)

3) Line from condenser to dash cooling unit 

 

I am not 100% sure how exactly lines are on 32s, I am referring to the attached diagram.

Just want to suss out as much possible on my end, Eventually will be taking her to a ac shop to get it all going, but getting them to do all those fitting will land me to second job. 

Appreciate your input.

52C70489-36F0-4DA1-BD96-FB14482B780C.jpeg

C35DFC7C-8D31-49F6-9698-78AB29A0B563.jpeg

Rb25orange Enthusiast

Rb25orange

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  • Author
Posted
On 10/09/2021 at 6:08 AM, r32-25t said:

I just did it the easy way and fitted the rb20 balancer on the rb25 but with the r33 rb25 the ac belts line up it’s just the power steering that doesn’t 

Was thinking of doing that, how did ya line the power steering then ? 

r32-25t Grand Master

r32-25t

Posted
Posted
On 12/09/2021 at 5:57 AM, Rb25orange said:

Was thinking of doing that, how did ya line the power steering then ? 

Used all the r32 accessories, alternator, power steering and alternator 

  • Thanks 1
GTSBoy Grand Master

GTSBoy

Posted
Posted
On 9/12/2021 at 5:23 AM, Rb25orange said:

please correct if wrong, all the things mentioned below are I figured will be needed as they are currently non existent.

I can't help you with the details. As I said, I put a Neo25 into my car, and everything is different from vanilla25. And I did not use complete lines. I had the compressor ends of BOTH lines cut off the car's lines and I had the ends to suit the 34 compressor welded on.

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