r0taryluv

Ok I have been messing around with ideas on how I am going to go about putting the turbo oil drain on my setup. The problem I am running into is that the turbo sets too low for me to drill and tap the front cover. The turbo sets so low that even tapping into the oil pan wont be much of a slop for the gravity fed return line. I have attached a photo showing the levels. I am not using that straint 10AN fitting that is shown in the photo I have bought a 45 degree which is a little better and is on an angle toward the oil pan. The fitting I am going to use on the oil pan will be a straight out fitting (a bulkhead nut with crush washers) Little more info I am using a 3AN SS braided oil feed line from the Racingbeat Block under the oil filter pedestal, and a 10AN SS Braided return line if I ever figure this mess out!!! Reason for posting this is to get some opinions on this situation it is driving me nutz!!

Thanx Guyz

r0taryluv

Bump.............. 15 views no ideas?

Gregs

maybey a small pump to pull the oil out and feed it to the front cover, i know that turbos are gravity drained so the drain point has to be below the turbo, im not sure if the pump idea would work or not

Solid Snake

I would sudgest removing the turbo and see if that gives you the room you need to drill into the front cover, then if it isn't enought, remove the exhaust manifold.

broken93

In my opinion based on the angle an AN fitting isn't going to cut it, since the ID is too small. I tried this once in a similar setting and oil didn't drain properly - it spilled out of the oil seal and into my exhaust.

I would fab up a steel pipe to make the transition into your pan. If you need a good drain, grab a stock drain from a 95-97 Eclipse GST - it's a steel tube with a flex section in the end and two flanges that can be easily cut off and/or modified; and it's only about $25.

r0taryluv

Gregs:
I have thought of trying to find an Inline Electric oil pump but I'm not sure if that is something out there.

Soild Snake:
I am not sure what you are suggesting. Tapping into the front cover is not a problem, the problem is to get the oil to drain out of the turbo into the front cover which would be impossible with my setup due to the turbo setting so low. It is Parrell with the exhaust ports.

Broken 93:
I have bought a 45degree AN fitting comeing right out of the Oil drain Flange which gave it a smoother flow towards the pan, but like you pointed out that isnt going to work due to not enough space. I will have to use the AN fitting on the pan side due to the bulkhead nut I have installed. Pictured Below. But I do have a Barbed 45 degree oil drain flange laying around that I went and checked out it should work out alot better.

Thanx for your suggestions guys

seanrot

iTrader: (2)

I tapped into the pan. bought one of the oil return flanges for the turbo. exact same one you have in your picture. used it as a pattern for three holes in the side of the pan. welded two nuts on the insideof the pan, so the flange can be removed and installed when tring to reach the 10mm bolts holding the pan on. this is a look at what I did before the pan modification. Sorry dont have much time to jack it up and take a picture right now.

Used 3/4 inch hose to connect the two. you can get a 3/4 inch to 1/2 npt fitting at advanced auto for less than $5.00

Directfreak

iTrader: (2)

What exhaust manifold are you using? Got pics of it?


Maybe you could make a spacer for the flange, to raise the turbo more.

Maybe you could mount the exhaust manifold upside down?

frode

Sorry, I have no comment on your drain fittings. It would give me a headache too

Correct me if I'm wrong, but I think both of the ports available on the RB sandwich-block is before the oil-filter, you dont want to feed your turbo with unfiltered oil do you??

--
frode

r0taryluv

DirectFreak: I have attached a picture of my manifold, there would be ALOT of fabircation to make the turbo higher for the oil drain......

Frode: The block from Racingbeat allows the filtered oil to fed to the turbo,there are two different holes in the oil pedistal and in racingbeats block, one is the oil feed up from the oil pan and the other is the filtered oil that goes to the oil cooler,then through the engine........ I have attached a photo for you.

I have came up with a new idea I would like some feedback on though. I am running a 3AN oil feed line and was plaining on running a 10AN oil drain. Here is my new idea.... I am going to keep the 3AN oil feed due to the high oil pressure in our cars, and thinking of steping up to a 12AN oil drain. This will allow a better flow seeings I have so little space and not that much of a slop(shown in first pic) I have a barbed flange that will fit the 12AN hose coming from the turbo which I will put two hose clamps on, so I just need to buy the 12AN Bulkhead for the oil pan. So my main question here is, is a 3AN Feed and 12AN Drain a good idea for my setup?....... and the Headache continues!!!

Directfreak

iTrader: (2)

It seems like a bad angle. Could you post several pictures of it, from different angles, so I could get a better 3D image in my head?

As far as Fabrication, I mean an adapter to raise it..

BTW, I could get you a brand new exhaust manfold for about $350, made
for a 1st gen, with a nice "Y" shape for quick spooling.

r0taryluv

Here are some more angles(only angles I could get, camera would only fit in curtain areas) of the oil drain setup I am currently dealing with. The hose barbed coming off the turbo will fit a 12AN SS Braided hose, and the hose fitting on the oil pan is for a 10AN, which I plan on changing to a 12AN for better flow like I have mentioned earlier. So question still remains.... is a 3AN oil feed with a 12AN a good idea on my setup? Suggestions welcome here!!!!! Still driving me NUTz!

peejay

The turbo oil drain must slope downwards and must enter the engine above the oil level in the pan. I cannot stress how important this is. I have seen turbos destroyed because the oil was overfilled and it blocked the oil drain.


It seems that your turbo is so low that this will be impossible.


What you need is an electric scavenge pump, or a different manifold. No two ways about it.

r0taryluv

The turbo is above the oil pan, my setup doesnt seem to set much lower than a s4 or s5 does. I have attached a photo of Rex4lLifes turbo oil drain... I am not trying to say anything wrong what so ever about his work but it doesnt look like much of a slop nither. If you were to compare the distance from the oil drain on the turbo to the front cover where his is mounted it would be the same as mine, only about a inch or two. The biggest difference in his and min is the idea his will be draining in the front cover which would be only air. Where mine sets it is not much above the oil leveL but the turbo does set a good inch and a half above the oil pan, which in my opinion gravity would still allow the oil to flow downword plus liquid tends to level itself out, I could be all wrong here but these are my thoughts. This setup did come from a Rx7 guy that had used it on his 1st gen drag 13b 6port. The turbo was rebuilt at one time but he said he couldnt remember off hand how long ago. The shaft has no play in it so it seems the bearings are still good. He too had the oil drain going into the pan(The rusty picture on the tile floor shows the turbo right after I bought it)

r0taryluv

missed the attachment.... here it is

coldy13

There doesn't need to be much of a slope. As long as it's parallel, or slightly downhill, it's fine.

web777

Your turbo sits as low as mine. You can trim a little off the nipple of the 45 and it should work. Or better yet get a 45 barbed fitting for the turbo drain. That's what I did and it's been running fine.

frode

Your turbo would mount higher if you changed that on-center exhaust housing with a tangentile one.
Yeah, I have seen the adapter before (I have it myself). I think you got it a little wrong though. The oil pump sits on the front of the engine, sucks oil from the pan, pumps it through the oil-cooler, back to the filter and then to the engine internals (This means I was right, and you was wrong )

--
frode

Anex 570

Why does it have to be gravity that takes the oil way, if you have a high-pressure feed? this part I dont get what you guys are saying now...

coldy13

The oil in the turbo floats the turbine shaft. It needs the pressure to float the shaft, but once it gets past there, there isn't much of any pressure left over, maybe a couple psi. I think it would even be okay if it was at a small incline to the drain, but not much of an incline or else the line would clog itself with oil and the turbo would smoke like a ************ since the extra oil would probably seep through the seals. This would happen too if you had too large of a feed, it would be too much for the turbo to handle and probably seep out the seals.

peejay

The oil turns into a froth as it goes through the bearing. Imagine whipped cream, but instead of cream, it's Castrol. That's why it requires such a large oil return, since foam doesn't flow as well as oil. Additionally, since the froth is less dense than solid oil, the solid oil in the pan will act like a "plug" and prevent it from flowing very well.

Now. Why does it have to be gravity fed.

Yes, the oil is under pressure in the lines. However it should be under ZERO pressure after the bearing. Meaning you need a gravity drain. If you had to force the oil back up, that would require pressure. That would rob effective pressure from the bearing since the difference between inlet and outlet would be reduced, and you could (would) force oil past the seals because of the "oil backpressure" in the turbo.

coldy13

You can get away with a SMALL incline without doing any damage at all. Since my drain is just 3/4" rubber heater hose, I can't make a tight bend with it and it ended up being a very very small incline near the end. It still drains fine and no oil seeps past the seals. Any more than just a very slight incline and oil will seep past the seals though. At first mine was at more of an incline and it didn't work, so I had to re-do the fittings coming off the turbo. Now it's *almost* parallel with the ground.

Directfreak

iTrader: (2)

See this "Extension" for the Exhaust manifold?



Well, Make one for the side that goes to the Turbo, NOT the engine.
Get Two T-04 Flanges, and make an extension between them.

This will give you however many more inches you would need in
order get the proper drainage. If you don't have proper drainage,
you will ALWAYS have a smokey turbo.

Personally, - I would get a new exhaust manifold, but I know
price can sometimes be an issue. - You could always sell your current one to
re-coup your costs.

setzep

Take the "AN" crap off and screw in NPT-hose barb fittings. This will give you more room to work with.

I'm with peejay though, you want your oil to dump back into the engine at a level above the oil, not into the oil. With the dipstick reading full the oil level is even with the top of the oil pan, this is why you see people returning the oil into the front cover under the OMP.

1sgen

iTrader: (1)

I Would Really Suggest That You Place A Spacer Under The Turbo So You Can Get It Higher . You Have To Make Sure That Your Drain Is Over The Oil Level In The Pan And The Oil Pan Is Not That Tall . Personally I Would Space The Turbo Up And Go For The Front Cover Drain.