Matt300ZXT
02-10-2013, 02:10 PM
Oops, forgive the redundancy of my thread title lol
I'm looking for basic info on the specs of the various SR20 turbos. The best I can gather the S14 SR20 turbo is a GT28R where as the S15 turbo is the GT28RS? I'm mostly looking for a basic primer on what turbos (and whether journal bearing or ball bearing) came on the various S chassis SR20 motors.
The reason being is I'm looking to upgrade the turbos on my 300ZXTT from wimpy T22s to better flowing T25s or T28s. If I can find a place that rebuilds SR20 turbos and get fresh ones with a T25 housing versus buying JWT Sport 500s for example with bored out T22 housings for roughly the same price, then I'd rather buy the turbo with the larger housing.
I know a lot of turbo shops that upgrade Z32 turbos bore out the stock T22 housing for T25 wheels or even T28 wheels but they aren't as efficient since a big wheel is stuffed in a small housing and they aren't matched so to speak. However, I would take a shot in the dark and guess that a T25 housing bored out for a T28 wheel would be more efficient than the T22 housing bored out for the T28 wheel. I have found one shop that sells the early SR20 turbos rebuilt for $500, or for extra they can bore it out and install the T28 wheel. I have emailed them to see if they use new CHRAs or just rebuild the original CHRA which I'm planning on steering clear if it's not a new CHRA.
Anyways, some info you guys could pass along would be greatly appreciated since soooooooooooooo many people on here use SR20s, or fantasize about using an SR20.
I'm looking for basic info on the specs of the various SR20 turbos. The best I can gather the S14 SR20 turbo is a GT28R where as the S15 turbo is the GT28RS? I'm mostly looking for a basic primer on what turbos (and whether journal bearing or ball bearing) came on the various S chassis SR20 motors.
The reason being is I'm looking to upgrade the turbos on my 300ZXTT from wimpy T22s to better flowing T25s or T28s. If I can find a place that rebuilds SR20 turbos and get fresh ones with a T25 housing versus buying JWT Sport 500s for example with bored out T22 housings for roughly the same price, then I'd rather buy the turbo with the larger housing.
I know a lot of turbo shops that upgrade Z32 turbos bore out the stock T22 housing for T25 wheels or even T28 wheels but they aren't as efficient since a big wheel is stuffed in a small housing and they aren't matched so to speak. However, I would take a shot in the dark and guess that a T25 housing bored out for a T28 wheel would be more efficient than the T22 housing bored out for the T28 wheel. I have found one shop that sells the early SR20 turbos rebuilt for $500, or for extra they can bore it out and install the T28 wheel. I have emailed them to see if they use new CHRAs or just rebuild the original CHRA which I'm planning on steering clear if it's not a new CHRA.
Anyways, some info you guys could pass along would be greatly appreciated since soooooooooooooo many people on here use SR20s, or fantasize about using an SR20.