flyingsniffer
19-06-2016, 06:56 AM
Those who were on the Euro trip may recall that I had a/c problems: cutting the belt cured the immediate symptoms but it was clear that there was something amiss down below. Anyway, the a/c systems has never really worked properly so I decided to go through the system, with input from the ever-helpful Kaz. Key actions were
- change the main pipe in the front (I've had it aluminium welded once before but it still showed signs of leakage - found one on ebay, fortunately
- change the received/dryer - Rover 75 unit off ebay
- change the expansion valve- Rock Auto
- change the compressor: the fault was the pulley bearing letting go, but the compressor was not well either. When I took one of the mounting bolts out, refrigerant came out of the hole! Rock Auto
- purge and clean the a/c system - bought a kit with solvent to push through the pipes, inc ase the old compressor had let go some metal bits.
Anyway the purpose of the post is one of those'useful intel' things. The Rock Auto compressor for a 3.2 2000 NSX is 471-1194. However the pulley is wrong diameter and not the right alignment.
A lot of digging around and sleuthing revealed that the a/c pulley for my glorious NSX is shared with that other aspirational powerhouse, the Toyota Avensis 1.8 petrol (1998 - 2000). I bought a s/h compressor (eBay!) for £30 and chucked away the compressor part, just used the pulley and the pressure plate, which were fine.
If anyone ever requires a new compressor from Rock for a 97+ 3.2, I am 99.9% certain that the right compressor and pulley is the 47111128, which is from a 3.4 V6 Toyota Tundra (as the Avensis is not sold in the US). The electrical connection is wrong but that's easy.
I am now in the process of reassembly, except for the blower fan. I'll then get the system evacuated and leak tested. Only once all is well will I put the blower back on.
Hope that helps someone.
- change the main pipe in the front (I've had it aluminium welded once before but it still showed signs of leakage - found one on ebay, fortunately
- change the received/dryer - Rover 75 unit off ebay
- change the expansion valve- Rock Auto
- change the compressor: the fault was the pulley bearing letting go, but the compressor was not well either. When I took one of the mounting bolts out, refrigerant came out of the hole! Rock Auto
- purge and clean the a/c system - bought a kit with solvent to push through the pipes, inc ase the old compressor had let go some metal bits.
Anyway the purpose of the post is one of those'useful intel' things. The Rock Auto compressor for a 3.2 2000 NSX is 471-1194. However the pulley is wrong diameter and not the right alignment.
A lot of digging around and sleuthing revealed that the a/c pulley for my glorious NSX is shared with that other aspirational powerhouse, the Toyota Avensis 1.8 petrol (1998 - 2000). I bought a s/h compressor (eBay!) for £30 and chucked away the compressor part, just used the pulley and the pressure plate, which were fine.
If anyone ever requires a new compressor from Rock for a 97+ 3.2, I am 99.9% certain that the right compressor and pulley is the 47111128, which is from a 3.4 V6 Toyota Tundra (as the Avensis is not sold in the US). The electrical connection is wrong but that's easy.
I am now in the process of reassembly, except for the blower fan. I'll then get the system evacuated and leak tested. Only once all is well will I put the blower back on.
Hope that helps someone.