pulling turbo oil feed from pressure sender location.

[86GT635]

To pull out the stock sender location and replace with a few fittings for the oil feed for the journal bearing turbo and a pressure sender would pull oil. But would the valvetrain be at a loss?
here are a couple pictures for your consideration.
http://hphotos-snc3.fbcdn.net/hs136.snc ... 5802_n.jpg

http://hphotos-snc3.fbcdn.net/hs136.snc ... 9861_n.jpg

[Brad D.]

I find it easier to just drill and tap the oil filter housing for the oil feed. Less adapters and crap hanging off the head and less potential for valvetrain oil starvation.

[Jeremy]

The back of the head is the last place that gets pressure on a cold startup and generally the spot of lowest working pressure in the oiling system in general. Those two reasons make it a rather poor location to get the oil for your turbo.

Jeremy

[cvillebimmer]

I used an oil distribution block from TRM.

It works fine for me. When I tested it (line disconnected from turbo) oil started flowing in less than a second.

[86GT635]

I guess that it is viable for some people. cvillebimmer are you using a ball bearing or a journal bearing turbo? Do you know what pressure you're seeing?

I think I will want to measure how much oil comes from the spray bar with and without the turbo feed to really get a solid idea of the pressure loss.

I will eventually get a remote oil filter and tee off the return. I don't know if there is a manufacturer anymore though.

[George]

I find it easier to just drill and tap the oil filter housing for the oil feed. Less adapters and crap hanging off the head and less potential for valvetrain oil starvation.

+1

[86GT635]

I can't put my finger on why, but that seems to be a smidgen more work than removing a pressure sender and screwing one in.

It's solid, how you did it. I'm not knocking it at all. It's how I will do it too.

I'm just looking for info on the way I asked about.

[mooseheadm5]

You asked for info and you were given info. The pros don't do it that way. The first time I installed a turbo kit for someone I looked at the adapter they had and the instructions that said to hook the line to the head and I immediately tossed them aside and did it the way George showed.

[George]

I can't put my finger on why, but that seems to be a smidgen more work than removing a pressure sender and screwing one in.

It's solid, how you did it. I'm not knocking it at all. It's how I will do it too.

I'm just looking for info on the way I asked about.

Drilling and tapping the housing is about as easy as it gets. I've been running my oil feed for my 60-1 from there for 2-3 years now with zero oil issues.

[T_C_D]

I can't put my finger on why, but that seems to be a smidgen more work than removing a pressure sender and screwing one in.

It's solid, how you did it. I'm not knocking it at all. It's how I will do it too.

I'm just looking for info on the way I asked about.

If you are not willing to do a smidgen more work to do it correctly than STOP now because your build is going to be a clusterfuck with that attitude.

[86GT635]

What is wrong with starting a little conversation? There is more than one way to get oil for a turbo.

Maybe you are thriving on controversy. Every time I ask a question, I either get replies (from several members defintely not all) like 'do it this way or you're dumb', or I get no answers at all.

I just figured that the subforum for forced induction would be more user friendly. I thought you all would be happy to share your intelligence.

And about having a clusterfuck; I asked this question prior to installing it. To get opinions and peoples experiences. The attitude? is directed to nobody who is not close minded enough to realize there are different ideas.

I'm a noob, expect some people to not know everything about turbocharging/megasquirting, etc.

Back to the issue at hand. The pressure sender location obviously sees what pressure the oil pump of the engine has to offer. If it didn't there wouldn't be a pressure sender.

Does anybody have any information on oil starvation to the head caused by tapping the pressure sender location for a turbo feed?

[Jeremy]

Back to the issue at hand. The pressure sender location obviously sees what pressure the oil pump of the engine has to offer. If it didn't there wouldn't be a pressure sender.

What BMW put there is not a pressure sender, it's a pressure switch. It's a failsafe to indicate when an unsafe oil pressure situation arises in the motor. BMW put it at the location in the motor with the lowest working oil pressure intentionally. If you want to know what the pressure is coming off the oil pump, you put the sender on the oil filter housing.

You're getting grief because you asked about putting it there, were given reasons to not put it there, yet the only opinion you listened to was the one that agreed with what you had apparently already decided to do. If you've decided you're going to do something, don't come here and ask if you should then get mad when everyone doesn't go along with you.

[George]

Considering the last 3 M30 heads I've pulled apart have had severely worn cams, I wouldn't even consider tapping from there.


As for the turbo, have you ever seen the oil light stay on for more than a second? Every second that light stays on for a cold start-up that is time the turbo is spinning without lubrication. If you tap from the oil filter housing, that time is reduced and so is the wear on the journal bearing.

[86GT635]

Thank you! that makes the decision a lot easier. Moosehead, I didn't think about that, or even know. But it does make sense. I didn't know that was the location of the least pressure in the system.
I had not decided that was where I was going to get the oil from, but because it was included and used I wanted to know why someone would use that instead of the correct way, that the majority of people use. The reasons you just gave make it very clear that it is not the correct or smart thing to do.

I think the majority of worn cams stem from the banjo bolts backing out. But if pulling oil from the pressure switch location will rob the valve train, I wouldn't want to do that to a already susceptible problem.

I've seen the light stay on for multiple seconds, sometimes it will stay on at a cold start until the rpm is raised.

If anyone is still reading this, I am wondering where the best place to put a oil pressure sender would be. Since the head location sees the least pressure would that be where I would want to monitor? Using a few fittings it is possible to put a sender for a gooahje-lol. and the stock pressure switch in the stock location.

[George]

Put the pressure sender at the same place as the switch. A simple search will show multiple methods of accomplishing this.


Exactly what do you think happens when you lose a bolt in the sprayer bar?

You lose pressure. Just as you do when you tap from the head. Honestly though, I would more concerned with the turbo spinning oil-feed-less than losing pressure to the head. Thats a good way to shorten the life span of a journal bearing turbo.

[babisbabou]

Do not do it! Use the old fashion way, use the oil filter as described above!

[sideways7]

i'm not familiar enough with the filter housing to know by looking at it... i assume you are pulling oil from the filtered port and not the unfiltered side, correct?

mark