What size should the oil feed line be?
 

And how did u guys rig yours up? did u just use the appropriate An fitting, like a 90 degree bend? And then how did u connect it to the turbo?

wow..this is crazy..im here tonight (late) just to search for the same topic..I would love to know the answer..

Here is what im thinking to do..use the stock feedline from the front housing and connect a steel braided line from there to the turbo..i think we only need about 6"..

I also need to know what to do about the return line..

Yea i was thinking about that too, but what size. Guess i will just have to get an oil pressure guage and find out.

oil pressure gauge??..you mean you will test fit the fitting that comes with the aftermarket OP gauge??..hey let me know what you find.. Will a steel braided clutch line work????just curious..try removing the clutch line and test fit it with the existing feed line.

I think you want 6an in, and 10 or 12 out.

thats what i was thinking 6an. I was gonna use an oil pressure gauge to see if the oil pressure dropped too much = too big of a line.

I don't know if a gauge would help you at all or not...

basicly bigger line = more oil = lots of smoke out the exhaust. you control the amount of oil going into the turbo by the line size. which I think the corect one is 6. but ReTed knows better... for return you want the biggest one you can fit, which is either 10 or 12. as the return line is gravity feed, no pressure. so it has to drain back into the engine lower then the turbo.

Actually, I think you only need a -4 AN oil feed line - it doesn't have to be big at all. You want the biggest oil return line you can fit, though, since it's a gravity drain.

Look in the Single Turbo forum (which is really where this post should go...:) It's been addressed in there before.

Dale

There are two common ways to do this:

1) Since the stock turbo uses flanges on it's oil inlet/outlet, you need a matching flange that's welded to an (appropriate size) AN weld male fitting.&nbsp That attaching AN line will use a typical AN female end that secures onto the new welded male AN/flange fitting you just made.&nbsp Note, Turbonetics sells these flanges, since they are typically sized T04 flanges; almost any turbo should that services Garrett turbos should be able to help you out here too.

2) You can remove the turbo and tap the holes for NPT fittings.&nbsp Use make NPT to AN adapters to secure the AN lines.&nbsp Make sure no metal filings fall into the center housing, as this can KILL your turbo very shortly, since the shaft and bearings all rotating inside.&nbsp Note, use teflon tape or equivalent to seal the NPT threads, which you should be using on all NPT type connections.



-Ted

ah, ok thxs everyone.