Turbo Drain Tube & Bypass Oil Filter?

[Buffalo]

I've been thinking about installing an oil bypass filtration system & have been looking for a place to return the filtered oil.



The turbo has what looks like a 3/4" return pipe & hose going into the engine block. The supply line delivering oil to the turbo only looks like 3/8". I was wondering if you could put a "Y" in the return line & tap the return from the bypass filter, there? I believe the bypass filter flows about one quart per minute (Oilguard).



I'm just a bit concerned about "overflowing" that return line & possibly creating enough back pressure that the turbo return will not flow adequately. I'd like to do this to keep the length of bypass hoses to a minimum.



Does this sound like a good or bad idea? 3/4" hosing looks like it might flow quite a bit of oil but, I'd go to "Plan B" rather than risk damaging my turbo.



Thanks.



Joe F. (Buffalo)

 

[JStieger]

I'm just a bit concerned about "overflowing" that return line & possibly creating enough back pressure that the turbo return will not flow adequately. I'd like to do this to keep the length of bypass hoses to a minimum.

Joe-



This is a valid concern! The turbo drain hose is purposely made this big of a diameter to ensure a straight gravity flow drop for the oil that gets whipped up into a "froth" in the turbo.



I believe there is another port in the block above the oil pan where you can remove a plug and install a pipe nipple or equivalent. At least this is what I remember reading about guys making the 2nd turbo drain for the twin turbo setups.

 

[amsoilman]

I've been thinking about installing an oil bypass filtration system & have been looking for a place to return the filtered oil.



The turbo has what looks like a 3/4" return pipe & hose going into the engine block. The supply line delivering oil to the turbo only looks like 3/8". I was wondering if you could put a "Y" in the return line & tap the return from the bypass filter, there? I believe the bypass filter flows about one quart per minute (Oilguard).



I'm just a bit concerned about "overflowing" that return line & possibly creating enough back pressure that the turbo return will not flow adequately. I'd like to do this to keep the length of bypass hoses to a minimum.



Does this sound like a good or bad idea? 3/4" hosing looks like it might flow quite a bit of oil but, I'd go to "Plan B" rather than risk damaging my turbo.



Thanks.



Joe F. (Buffalo)

Try returning it here.

 

[PShepherd]

Visit the Oil Guard web site. Even if you dont like their product, they sell a modified return oil cap and hoses.

 

[Buffalo]

JStieger,



Thanks for your reply. I had not thought of the "frothing issue" of the oil. Boy, am I glad you mentioned that!!!



I am trying to avoid using the "modified oil fill cap" method because, I would like to eliminate the long return-line hoses. I know Oilguard has a billet cap that is included in their "Kit". Didn't know that Amsoil had one.



I've been thinking of having stainless steel braided high temp. hoses made-up so, the shorter, the better.



I went down to the local Cummins dealer & they couldn't find the drain tube/O-ring that is supposed to be available & installs in one of the "soft(freeze) plugs". One of our members (2nd Gen. 24 Valve) came up with with a slick system. Just may have to contact him & see if he can build one for me.

I'm thinking of going with Oilguard's system & Schaeffer's 9000, 5X40.



Thanks, again, for your replys. Sometimes, the help available here is just amazing.



Joe F. (Buffalo)

 

[JStieger]

Joe-



I cropped to fit the following pictures off of this site:



http://www.chad.prioritylabel.ca/tech.htm



The site owner took a bunch of pictures of his 305/555 motor from all types of angles. The pictures show the second possible oil inlet above the oil pan and below the oil filter. Remove the plug and then install the same nipple as for the turbo oil drain!

 

[Buffalo]

JStieger,



Thanks for the great photo's.



Joe F. (Buffalo)

 

[Buffalo]

Drain Tube Nipple & O-ring Part#'s & Prices.

For those that may be interested, I just got off the phone with Cummins Rocky Mountain, here in Phoenix & I was able to get some part numbers & prices. They are as follows:



Turbo Drain Tube Nipple Part # 3931827, $19. 00



Turbo Drain Tube Nipple O-ring Part # 3931824, $1. 50



The other day, I went over to Cummins RM to buy some filters & asked about the drain tube & we couldn't find it. After seeing a picture, here on the TDR, I was better able to describe what it was that I was looking for. The parts counter man found it right away, this time.



BTW, these parts are a normal stock item.



One of the guys on the 2 Gen. 24Valve forum had great pictures & descriptions of the one he made. He welded/brazed a fitting to the top of the nipple & had a nice oil return set-up.



Hope this helps someone.



Joe F. (Buffalo)