I have a 99 GSR (B18C1) that I purchased from auction with a ebay turbo kit, I've gone and replaced feed/drain and turbo and still have a issue with it blowing oil out the exhaust. Now I understand this to be like 3 things,
1: Poor Drain
2: Bad Seals
3: Engine issues

and from what I can tell; 1. I installed a new 10 an line with a straight / 45 and turbo drain is pointed down off about 10 degrees not quite straight down but fairly close. 2. I have installed 2 different turbos and continue to have this issue at idle the car doesn't smoke only when you give it rpms does it start pouring out the exhaust. 3. I have no oil coming from manifold.

Now I am still lost but I do have a belief to the issue, The car came with a moroso oil pan. https://shop.redline360.com/products...RoCFvQQAvD_BwE

And its said to have 4.1 qt capacity, and comes pre-tapped for a drain. What I noticed is when filling the oil at about 2.5 qts I have oil draining out of the oil drain. This is what I believe to be the problem but what I can't figure out is how others can use this pan and not have it as an issue, also its the same as a stock pan just baffled. What options do I have?

 

Valve steam seals, do a compression or leak down test make sure to check the engines Health

 

I'd have blow by from exhaust manifold if this were the case?

 

Is it an ebay turbo, does it have a restrictor, oil could be backing up in the drain line. Should prolly just come straight down for the drain. Other than a 45 fitting, i imagine is on the turbo. You the drain line as inline as possible. Please provide pics.

 

running a .035 restrictor as recommended by turbo. I have actually taken a bit out of the Line as well about 1/2 inch shorter.

my drain as requested=

 

Yeah, an eBay turbocharger with a .035" restrictor. There's your problem right there. Those eBay ones are not GT turbos with sealed bearing cages in which little oil is needed. You've killed it inadvertently, and now you must replace it. But that return line routing seems a little suspect too. Hard to do that with those things.

 

Not really a way to improve the routing of the drain, based on the layout. Though I don't believe the turbo is "killed'. The car hasn't been driven or run long. Just started and brought up a bit in rpms to see if it smoked. The part I am lost at is It smokes when up it RPMs which your attesting to bad seals from not enough oil, the last turbo I had I didn't run it with a restrictor instantly and had the same issue.

 

Just because you aren't running the car on the road doesn't mean that you're not causing damage by way of backflow from the return line or possible starvation from having the wrong restrictor in there. Even at idle, these compressor can easily spin at over 20,000rpms. And that's just you sitting there.

Well, You know.....what you know.

 

To be clear not arguing, just learning and questioning.

So your theory is a mix of turbo and drain line. any thoughts on these Moroso pans draining out of plug?

 

No argument here. Just emphasizing a different point of reference.

I just think that the oil drain point itself was horribly designed and never intended for a turbocharger that had high oil requirements. even the road race versions are at least a better option

 

Recommendations on a solution?

 

Go back to a stock OEM pan, reconfigure the oil drain line. Contact your eBay turbo seller and find out the type of CHRA that you have. Then use the appropriate restrictor on a clean oil feed line, if at all needed.

 

Pan dimensions are the same your more or less saying relocate the drain closer to the turbo vs the right side of pan.

 

the oil pan has the same dimensions, but has the depth at a more ideal location where backflow would be less of a possibility

 

Put a 45' hose end fitting at the pan end of the drain line as well and this will minimize the low area that allows oil to back up in the line.