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Engine Specific Info and Questions => IDI Engine => Topic started by: ein bora on February 21, 2012, 01:51:49 pm

Title: Turbo Oil Return Line
Post by: ein bora on February 21, 2012, 01:51:49 pm

This is the bottom of my VNT20 that's finally on my 1.9 IDI build, that's going into my passat gas to diesel project. I'm I safe in assuming that both the center holes are the oil return lines.
Thanks.

(http://img.photobucket.com/albums/v518/truszip/4ffaed9e.jpg)

Title: Re: Turbo Oil Return Line
Post by: ein bora on February 22, 2012, 08:25:30 pm

Maybe not enough information - it's a Garret GT2056.

(http://img.photobucket.com/albums/v518/truszip/96c75336.jpg)

Title: Re: Turbo Oil Return Line
Post by: fatmobile on February 22, 2012, 10:51:51 pm

Is that small hole threaded?
 Looks like it's used to hold/seal something against the other hole that opens into the chamber.

Title: Re: Turbo Oil Return Line
Post by: libbydiesel on February 23, 2012, 05:25:40 am

If you want better guesses then show pictures of all the ports in the center cartridge.

Title: Re: Turbo Oil Return Line
Post by: R.O.R-2.0 on February 23, 2012, 07:15:01 am

i would be thinking that it may have a liquid cooled center section...

Title: Re: Turbo Oil Return Line
Post by: rallydiesel on February 23, 2012, 11:40:12 am

I have a gt2559v with a similar arrangement. On it, the small hole is the oil feed and the larger is the return.

Title: Re: Turbo Oil Return Line
Post by: R.O.R-2.0 on February 23, 2012, 12:30:16 pm

Quote from: rallydiesel on February 23, 2012, 11:40:12 am

I have a gt2559v with a similar arrangement. On it, the small hole is the oil feed and the larger is the return.

that was the other option i was thinking..

OP, is there an oil feed on the top of the center section in the normal position?

Title: Re: Turbo Oil Return Line
Post by: ein bora on February 23, 2012, 01:31:26 pm

Quote from: R.O.R-2.0

OP, is there an oil feed on the top of the center section in the normal position?
[/quote

Yes - there is one on top too. But maybe rallydiesel is correct as I found this while searching, it's known as a oil inlet/outlet flange kit - but I couldn't find anything that goes along with it. As you can see in the pic the holes aren't threaded.

(http://img.photobucket.com/albums/v518/truszip/oilfeedinandoutforgt12.jpg)

Title: Re: Turbo Oil Return Line
Post by: ein bora on February 24, 2012, 04:27:12 am

Quote from: ein bora on February 23, 2012, 01:31:26 pm

Yes - there is one on top too. But maybe rallydiesel is correct as I found this while searching, it's known as a oil inlet/outlet flange kit - but I couldn't find anything that goes along with it. As you can see in the pic the holes aren't threaded.

(http://img.photobucket.com/albums/v518/truszip/oilfeedinandoutforgt12.jpg)

My error - after more digging the holes are tapped on the flange kit making for easy feed and drain solutions. The threads for oil feed is 1/8" npt  and the threads for oil return is 3/8" npt. I've contacted the supplier to see if it'll work on a GT2056 as they have it listed fitting a GT1241.

Thanks to all for the info. Helped immensely as usual.