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Ac Compressor Recondition/replace Gtr R32

paulyp

By paulyp,
in New South Wales

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paulyp Collaborator

paulyp

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update?

Also, what type of oil and how much did they use?

Can greatly affect the life of the compressor.

Hi Luke,

After inspection, it looks as though the AC compressor had overheated internally and seized.

The A/C specialist suspected the pressure's were too high due to the older original condensor design as the system was not designed to operate on R134a.

We used PAG46 oil in the new A/C compressor. Between 160-180ml.

Did they replace the reciever drier and clean out all the lines? Cause the metal shavings from the first failure will kill a new compressor very fast

Yes they replaced the reciever drier, cleaned out all the lines, even replaced one. Also did the evaporator, TX valve under the dash. Cleaned the lined out with Shellite. The works.

paulyp Collaborator

paulyp

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Hi All,

OK so here is the update and where I am up to.

I have 3x GTR R32 A/C compressors. 2x Zexel (original one off the car that leaked and a second hand working one I bought recently) & 1x Valeo (the new one that failed)

The specialist pulled apart all 3 of them and made 1 really good one. Looks like he decided to use the Zexel housing.

180ml of n8 denso oil has been put in it and we fitted it to the car.

Next we have removed the old condenser from the car, drilled out the rivets and removed the mounting brackets to be reworked into a new universal condenser.

The reason for using a new universal condenser is because it was suggested that the pressures with the original condenser was to high after retro fitting with134a gas.

The old condenser was a 'Serpentine' type and the new I bought is a much more efficient 'parallel flow' condenser.

Just waiting for the rain to clear so that we can fit it to the car, then have to clean all the lines again before recharging the system and it should be ready for winter lol.

Pictures to follow..

Edited by paulyp
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paulyp Collaborator

paulyp

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Hmmm.

I have a feeling it may be over oiling.

I have run 134a without any issues.

Even in temps as high as 40°.

Do you know how many mls you put in yours?

Paulyp, did you modify your condenser fan to turn on with the air con?

Hi Dark26, Yes that was modified to turn on whenever the air-con was running.

Will check the fan before re-fitting to make sure its still ok.

luke gtr Grand Master

luke gtr

Posted
Posted

Do you know how many mls you put in yours?

Hi Dark26, Yes that was modified to turn on whenever the air-con was running.

Will check the fan before re-fitting to make sure its still ok.

cant remember.

Would have been around the 30ml mark.

But, I will check the workshop manual and let you know what Nissan recommend.

  • 4 months later...
paulyp Collaborator

paulyp

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Hi all,

Just another update for everyone.

We have finished fitting the AC about 2 months ago and its working well.

Went through alot of effort to fabricate brackets and have hoses made to fit. Also had to modify the standard cooling fan to clear the new condensor.

Please see below pics and it should give anyone thinking of doing the same a good starting point.

Modified GTR R32 Fan

GTR R32 Custom AC Hose Fitted

Modified GTR R32 Hoses

GTR R32 HOSE

  • 5 months later...
Scott Black Rising Star

Scott Black

Posted
Posted

for what its worth, if your going to goto the effort of modifying or making up new lines for an ac system, you may aswell replace the compressor with a universal aftermarket type and just get the lines made to suit, and on the topic of higher pressures, you should have a low and high pressure switch installed to make the ac cut off if pressures get to high, yet a newer style of condenser will cool better so lower pressures a bit more and keep the car ac abit cooler.

  • 2 weeks later...

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