I did a search and found two different sizes mentioned. Is it the GT28R or GT28-RS? Whats the difference between the 2?

 

the GT28RS is the disco potato. the GT28R doesn't have the disco.

 

ok thanx

 

difference i believe is in the a/r ratio and the bearing setup

 

the gt28r is a s14 bb turbo. 310hp.
the gt28rs is a larger turbo with about 350hp tops.
the gt2540r is a 400hp turbo
Shaun

 

Burn baby Burn *da-na-na* Disco Potatoe! I heard there is virtually no lag... is that true?

 

umm the GT28R is not even remotely related to the stock s14 sr20 turbo at all... it may have the same bolt pattern on the turbine side and look like a snail but thats where it ends...

the GT28R and GT28RS are FAR more advanced and newer turbos than the T28 ball bearing, they are MUCH more efficient at medium and higher boost levels and can flow more air for a given pressure level... GTx doesnt automatically mean ballbearing; it just means it uses the newer GT cartridge... just like the GT25R has nothing to do with the T25 in the stock S13

the GT2540R is a mismatched turbo; who heard of using a T04S compressor housing on a T25-sized exhaust side? the GT cartridge is more efficient, but the little flow the T25 can do wont be able to match the larger compressor side...
the GT35R is a much better choice for big power, while the GT25R will get you 400hp no problem, 400rwhp with the right stuff

 

dont belive the hype read the compessor maps. plus the disco is too small