How to delete Turbo coolant lines

[overboosted1g]

So my new Turbo (pte 5031e) isn't cooled with coolant. It uses oil only, I was wondering if anyone had some pictures of the lines deleted.

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[dooblea]

I don't have any pictures, but I just got the coolant tube that runs behind the turbo and the o2 housing off of a1g 4g63 n/t. I also have the 90 oil filter housing with air cooled oil cooler.

 

[19Eclipse90]

On a 1G, the turbo is fed coolant from the thermostat housing and returns it to the water pipe. That being said, there are numerous solutions on how to do this. Here's some possibilities... and I started writing this before dooblea posted (slow, I know) so I repeat what he posted as well.

For a setup with an external (air) oil cooler: you must either replace the thermostat housing with a non-turbo housing or weld/close off the feed line port; similarly, the water pipe must either be replaced or closed off -- the threads of the bung for the coolant return line are M16 x 1.5mm pitch, so you aren't limited to welding it shut. Alternatively, you could find an appropriate barb hose fitting and loop the line from the thermostat housing, allowing some "backwards compatibility" if you ever needed it.

For a water cooled oil setup: Again, weld or plug the water pipe for the coolant return line. For the thermostat housing, weld/close off either the turbo feed or water cooler feed lines or find a '90 thermostat housing that only has the one nipple on the front. You could also follow the same barb hose, line looping alternative as above with the second nipple on the thermostat housing and the water pipe.

 

[jdxnc]

For a 2g, buy another oil pan plug to close off the return line into the block. I cut a small piece of rubber hose, slipped it over the tube on the water pipe and put a plug in it with a clamp

You can see it here:

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[overboosted1g]

OK I'm slightly confused, I have a 1g BTW. I understand I need to plug the t-stat housing and the water pipe but after I do that what do I do with the oil cooler. Do I have to run a different oil cooler or do I just use the barb's on the tstat housing as the feed and return for the oil cooler.

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[19Eclipse90]

The water-cooled oil cooler you feed from the thermostat housing and return it to the water pipe as you normally would; you don't have to change setups and you don't modify the oil cooler return.

On an original water-cooled setup, the thermostat housing will have two nipples on the front (not counting the one to the overflow. You would only need one of them and it doesn't matter which one you use. Does that help clarify things?

 

[talonDSMerr]

If you don't have your turbo off yet, it might look like the oil cooler's coolant lines are somehow connected with the stock turbo coolant lines, but that's not the case. They aren't related at all, getting an oil-cooled only turbo will require deleting and plugging only the turbo's coolant sending and return lines. Everything else, including the oil cooler's coolant lines, remains the same.

 

[nightmares GS-T]

Am I the only person who just connected the hoses together?

 

[overboosted1g]

Yeah now I understand. All I gotta do is plug one of the t start lines and the Turbo line on the water pipe.

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[dsmarmy777gst]

I put the plug back in the block for one of the lines. And for the other line I used a vacuum cap to block it off. I didn't think it'd hold up but my buddy did it to his and it worked. Its looks clean too.

 

[overboosted1g]

Did you zip tie or hose clamp your cap on

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