Thought I'd start another thread to address some new thoughts. It has been brought to my attention that I may infact need a larger oil return line from my turbo to my pan. I however, don't see a way to do this. My T-76 sits so low and I've already used the front drivers side of the pan to weld on my -8AN fitting. The line I'm using is 1/2 inch ID line, but it's connected with hose barbs. I'm assuming the hose barbs MUST get go down to 3/8's ot so to fit the hose over the barb. SO, I believe I've found the root of my problem. I need to figure a way out to drain this oil out of the turbo more effectively.

SO, those using the turbo tech manifold, where are you draining your oil to? My line isn't sloped downhill that far and i'm not sure how to make it any better. Therefore, my latest idea is to use a scavange pump.

SMOKNZ, Brandy, etc, chime in please with your return line size, where it's routed to, and PLEASE get me some pictures of how it's supposed to be done.... I think this is my LAST hurdle.

 

When I first installed my turbo, the drain back on the centersection was on the bottom, and the feed line was on top. When I put the line on it was actual rising to the oil pan( both holes were perpendiculart to the ground). I took the turbo back off, and rotated the center about 45 degrees. The feed is now angled toward the block, and the return is angled toward the fender. Here's a low resolution pic. http://members.aol.com/baodysseus/dsc_043.JPG This brought the return above the oil pan connection and allowed me to get a downslope to the pan. The return line is 1/2"inside diameter, and connects to the oil pan thru a modified marine fuel tank vent.

 

The only issue I have with your setup is the angle of the center section. Everyone recommends 15 degrees or less... and you've got 45!!

Did you have any issues at all with that much center section angle? If that works fine, I think that is my plan for tomorrow.

Jesse

 

Mine barely has a downward slope in the line, but it does go straight down for about 2.5 inches before the first AN fitting bend. I think it's a -10 size return. I've had no oiling problems so far.

http://www.chitownsyty.com/gallery/v...ame=jim&id=abx

 

I have the turbo center section at about a 45 deg angle too. I came out of the turbo with a 1/2" NPT close cut nipple and then a 1/2"NPT 45 deg pipe fitting. Then the biggest hose barbs i could find with 1/2" threads and put on a 1/2" inside diameter rubber line to the oil pan. I welded on a hex bushing to the oil pan to attach the other barb onto. Not the optimal setup thats for sure, but it is the only way i could get a slight downslope. I welded on the hex bushing to the pan as low as I could get it. Hope this helps.

Bill

 

I always thought that people were talking about the whole turbo when they referred to the 15 degree stuff. It makes sense that you would want the compressor and the turbine to be level or close to it. I didn't think it would be a problem to rotate the center. Haven't had any problems yet, we'll see. Now if I can just get the driverside header to seal to the crossover. I may have to put a flex section in the middle.

 

You can rotate the exhaust and compressor housing 360, that doesn't matter. The problem with rotating the center section is with oiling. Supposedly the bearings will not get proper lubrication if it's past 15 degrees. Now, it might be 90% safe at 30 and 70% safe at 45, but at less than 15 degrees, it'll never fail.

I look at it like this, the turbo manufactures are covering their butts by saying 15 degrees because it won't fail due to oil issues at that angle. Turbo's MAY last at greater angles, but it's not guarenteed.

Jesse

 

I just rotated the center, I'm thinking that at 60psi the bearings are going to get lubricated properly. Seeing as how my turbo has maybe 20 miles on it total though I could be wrong.

You could always just put a remote reservoir with an electric pump or use some kind of a scavenge pump to suck the oil out.

 

I'm actually going to order a scavaging pump tomorrow. That should solve all my problems, I hope...

 

Jesse,
I see what your saying. Like Brandy, I'm hoping the oil pressure going in will be sufficient to lubricate it.

 

Most turbo manufacturers recommend a -10 oil drain line or a -8 at the minimum.