1. Which material is suppose to be used for oil feed return. i heard brass isnt' good.. but how about steel, stainless steel or alumnium. Can i mix both steel and alumnium (eg. steel fittings but with alunminum tee's), can i still use brass t's with the stainless steel fittings? or aluminum

2. How flexible are like -3an size braided stainless steel lines, because i just want to run ONE "Male BSPT to female NPT" fitting on the back of my block, so it's striaght out, then i run my -3an oil braided line which has a AN to NPT on the ends to fit that other fitting and tee's.

I'm asking if i need some kind of 90 degree ---- so the line can come straight up instead of like horizontal then curving, maybe it can't curve that much?

3. Also, if you decide to tee ON THE FIREwall, how much slack is needed for my engine, (d16y8 on 98 hatch). and also how long? 2 feet?

thanks and hope you guys can help me out!!!!!!!

 

the engine only moves a few inches.. so just put a nice lil loop, a littl bigger then a softball.

-3AN line is flexible enough.

I wouldnt recommend having an alluminum T and steel fittings as they have difference expansion rates and one could crack the other or stretch the threads. Usually the turbo should come with some sort of flange on the oil return. just get a similar flange and fix it to the pan somehow. Then just use some hose clamps (2 for each side to be safe) and fix a hose that goes in NO UPWARD directions. 45deg angle down to the oil fittin on pan.

Just make sure that you get a line that is NO THINNER then the oil size on the turbo. ATLEAST 1/2" INSIDE DIA seems to be a good starting point.

 

so i don't need the 90 deg fitting on the back of the block as i said, i'm just going to run 1 bspt to npt adapter and then the line, so it's coming horizontal out of the engine and needs to flex upwards

 

there is massive amounts of info on oil lines in the FAQ in FI. check it out, if you cant find your answer msg back.

 

ok seems like i found out some more info.. i called one of the shops that sell and they said it's really flexible... but i think i am going to not do the firewall thing, i have this metal area clip near the intake manifold that i can run my oil pressure sender and garbage off...