I am in the process of installing a bigger turbo and I had the stock size drain lines for that old turbo, but for the new turbo should I upgrade those lines too? If so, how much bigger? Would too big of a drain line hurt anything?
I forget the stock size hole/lines, but the new lines are 7/8"OD 3/4"ID and I had a hard finding anything to match that size so I upped it to 1"OD 7/8" ID... Will that cause for any issues? Now for the feed line, I am going to have to bush the inlet down to match the sending unit hole... Not by much I hope, but will that cause any problems?
Thanks!
I just used a 5/8" brass heater hose fitting that ATPTurbo.com sells along with 5/8" silicone oil hose, and it was the stock size.. I did a GT2871R turbo on the stock T2 manifold flange and have about 10,000 miles on it and no smoking or problems.