Rear AC Compressor bolt and Turbo Downpipe Studs/Nuts

Discussion in 'Technical' started by Hellsheep, Jul 15, 2017.

  1. Hellsheep

    Hellsheep Administrator Staff Member

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    Hey guys,

    So some may be aware I'm in the process of pulling the VG30DETT out of my other Zed to swap into my NA chassis as the NA motor is dying and the donor car is just sitting.

    I've got a few outstanding issues; I tried many methods of getting the nuts off the studs for the turbo downpipes so I can remove the exhaust in one section, unfortunately they're extremely rusted and only two have come off cleanly after many heating/cooling cycles with a butane torch and lots of WD40.

    Three of the other bolts are completely rounded and i've started cutting/grinding two of them however it's taking me a very very long time due to the location of them and the very limited space. The one remaining one I haven't even tackled yet is on the drivers side, at the rear which seems to have the least amount of room of all the nuts to get to.

    Does anyone have any idea how I can remove these easier than my current dremel with cutting/grinding disc methods?

    Second Issue;

    The rear AC compressor bolt won't budge and has started to round. I've 100% verified I'm turning it the correct way, even tried the incorrect way just in case. I've tried with crows foot, 6 point sockets with extensions and even flare nut wrenches which get a much better grip on it. Now that it's started to round I've kind of given up trying to get it undone, as I'd like the very best chance of removing it without having to mess drilling it once the engine is out etc.

    Should I get an AC company to come drain the Freon from the system and then just remove the AC hoses instead and pull engine out with compressor still attached?

    Help much appreciated as I've read so many tech articles from many websites and gotten no where. I just want to get onto rebuilding the engine :)
     
  2. Boorkus

    Boorkus Member

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    I managed to lift the motor out of my Z32 TT with the dump pipes still attached to the turbos. Didn't even attempt to get those bolts off with the engine still in.
    However I'm not using stock downpipes - I've got AMS stainless dump pipes...
     
  3. Hellsheep

    Hellsheep Administrator Staff Member

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    How did you get it out then? Maybe my terminology is incorrect, I'm talking about unbolting the rest of the exhaust from the turbo down pipes?
     
  4. Boorkus

    Boorkus Member

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    Oh yes. I unbolted the rest of the exhaust from the downpipes. Once the engine was most of the way out of the engine bay, I unbolted the downpipes from the turbos when I had more space to get to the nuts/bolts holding them to the turbos.
    Might have to resort to cutting the exhaust bolts off if they're too rusted in there.
    As for the back AC compressor bolt from hell, I managed to crack it loose with a flex-head ratchet spanner with another spanner for leverage. If you can't get it off, welp you're stuck, you're gunna have to get the ac degassed and remove the ac compressor with the engine.
     

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