i ordered a -4an oil feed line for my car but after doing more reading i think i messed up.

from alot of stuff i have read people have had problems with the -4an lines feeding too much oil to the turbo and then blowing the seals, and i've heard that people using a restrictor have had problems with it not feeding enough oil to the turbo and then it burns up.

so did i mess up by ordering the -4 oil line? and if so would you recommend getting a restrictor? if so what size? or would you suggest just getting the -3 oil feed line?

thanks in advance for the help

 

I have never heard of a restrictor causing a turbo to go unless it was a ball bearing, or in the odd case that the line became completely clogged.

Oil film bearings only need a little bit of oil. Constrict the feed with a 1mm restrictor, and use water cooling if your turbo has it.

 

the turbo does not have water cooling,

 

first of all alot of people on here dont know how to set up their return line, i ran a 4 an line with my sc61 turbo for 50k miles without any problems, and ur not gonna get more pressure anyways with a bigger line as long as the return is a 10 an and its a straight shot to the pan ur never gonna have problems.