M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Swaps, Turbos, Buildups => Topic started by: E301000 on March 04, 2013, 12:22:03 PM

Title: M42 Turbo Oil Return Line
Post by: E301000 on March 04, 2013, 12:22:03 PM

Hello All

I am planning a top mount turbo project for my E30 M42 318is and would like to know if it is possible to tap into the block to install the turbo return line instead of the oil pan location. Please give me your suggestions on the best location on the block.

You comments are welcomed....Pics too if possible.

Thankd

Title: M42 Turbo Oil Return Line
Post by: romkasponka on March 04, 2013, 02:10:28 PM

I saw some people did it on the oil dip stick. It is not the best place but easy to do.

Title: M42 Turbo Oil Return Line
Post by: E301000 on March 06, 2013, 10:49:49 AM

Thanks, any other suggestion ?????

Title: M42 Turbo Oil Return Line
Post by: romkasponka on March 06, 2013, 12:46:53 PM

Other sugestions are drill the hole in block or sump above oil level and install the fitting for the hose. This way all the things should be nice and compact.

Title: M42 Turbo Oil Return Line
Post by: wazzu70 on March 06, 2013, 01:40:05 PM

Agreed. You can drill and tap above the sump line.

Title: M42 Turbo Oil Return Line
Post by: E301000 on March 07, 2013, 07:45:45 AM

Thanks guys ....

any pics ???

Title: M42 Turbo Oil Return Line
Post by: fumstoo on March 07, 2013, 03:39:15 PM

Heres mine

(http://i1263.photobucket.com/albums/ii628/mf42/download-13_zps43629942.jpeg)
(http://i1263.photobucket.com/albums/ii628/mf42/101_0343-1_zps14bbbcd1.jpg)

Title: M42 Turbo Oil Return Line
Post by: E301000 on March 08, 2013, 07:56:06 AM

Thanks for the pics ......Anyone else with a picture of the block being tapped for turbo oil return. This should be helpful for all the novices like myself.

Title: Re: M42 Turbo Oil Return Line
Post by: Turbo_folke on March 20, 2013, 01:14:10 PM

really bad picture but it's better than anything

http://www.ladda-upp.se/bilder/pvqpfrpaftsokz/

Title: Re: M42 Turbo Oil Return Line
Post by: MLM on March 20, 2013, 03:22:50 PM

Ive seen the timing case used before.

Title: Re: M42 Turbo Oil Return Line
Post by: bar73k on April 19, 2013, 05:23:52 AM

Here is my oil return line, if you tap into the block then you need to do it when the motor is stripped down

Title: Re: M42 Turbo Oil Return Line
Post by: rob_e30 on April 26, 2013, 11:58:05 PM

Here is where we did it...  Don't forget to factor in your motor mount and exhaust locations.

Title: Re: M42 Turbo Oil Return Line
Post by: DRTE30 on May 04, 2013, 07:57:31 PM

Is there a reason for installing the return here as opposed to the standard return back into the oil pan? Personal preference? Engine oil starvation? More vacuum or a more direct, vertical alignment?

Title: Re: M42 Turbo Oil Return Line
Post by: wazzu70 on May 05, 2013, 12:02:37 AM

The oil return should be above the oil line in the pan. If it is not the oil can back up in the return line and burn in the turbo (smoke out the exhaust).

Title: Re: M42 Turbo Oil Return Line
Post by: rob_e30 on May 08, 2013, 07:49:35 AM

We installed the inlet farther back in the block in order to allow the oil to cool against the pan as it ran down to the sump.  It was also above the sump level.

Title: Re: M42 Turbo Oil Return Line
Post by: dmnracing on June 25, 2013, 08:51:34 PM

Quote from: rob_e30 on May 08, 2013, 07:49:35 AM

We installed the inlet farther back in the block in order to allow the oil to cool against the pan as it ran down to the sump.  It was also above the sump level.

That makes sense, do u also run a oil cooler or use that technique instead? Also where did u choose to get the oil feed line from?

Title: Re: M42 Turbo Oil Return Line
Post by: fumstoo on June 27, 2013, 01:24:19 PM

theres two spots on the oil filter housing. One in front with a 6mm(iirc) allen bolt in it and one in th eback where the stock oil psi sensor goes.

Title: Re: M42 Turbo Oil Return Line
Post by: dmnracing on June 28, 2013, 03:57:17 PM

 Is that the same on the e 30 and the e36?