| While debating my turbo choice, I've compiled the following info for various turbos. Please add any additional information for turbos with missing info and add any turbos I have not included in the list. I'm mostly interested in adding the specs for the 535's as they have some nice dnyo's out there and confirming the specs on the 2530's as I found that data on a skyline board and am not certain it is accurate. I'm pretty much down to gt28r or the gt28rs with .64 a/r as my final two choices. Prices are right for both of these turbos but 2 questions remain: Will the 28r's give me the power I desire(550ish race gas, 450ish 93 pump conservative tune)? and will the 28rs's be too laggy for the road course. Please keep in mind this car is built primarily for the road course, but a 10 second timeslip wouldn't be bad either. I know Kuah has reached the 10's with his 28r's, but that's no guarantee that I can do it also.
I will have all the supporting bolt on mods including an AEM ems and I realize I will be pushing the limits of the 555's to reach my race gas target hp. Here are the specs(mostly obtained from garrett's website): Turbo ___________ Compressor _ ind(mm) _ exd(mm) _ trim _ A/R _ Turbine diam(mm) __ trim _ A/R
gt28r(2560r or s15) _____________ 46.5 ____ 60 ____ 60 __ .60 ________ 53.0 _____ 62 ___ .64
2860r-707160-5 ________________ 47.2 ____ 60 ____ 62 __ .60 ________ 53.8 _____ 76 __ .64/.86
2860r-707160-7 ________________ 44.5 ____ 60 ____ 55 __ .42 ________ 53.8 _____ 62 __ .64
2860rs(disco Potato/sp700) _______ 47.2 ____ 60 ____ 62 __ .60 ________ 53.8 _____ 76 __ .64/.86
2871w/28r comp housing _________ 51.2 ____ 71 ____ 52 __ .60 ________ 53.8 _____ 76 __ .64/.86
HKS2530 ______________________ 47.7 ____ 60.1 __ 63 __ .60 ________ 53.8 _____ 76 ___ .64
HKS GT2835 52 trim(assuming comp) .87 AR (assuming exh)
JWT 535 ??
TD04 ??
TD06-16g ??
TD05-18g ??
TD06 ?? and this info came from a post by Alex Lee [DE](ECZA ZBQ Tmrrw) on July 20, 2001 at 5:36 PM Turbo _______________________________________________________(Exh Trim)(Exh A/R)(HP Potential):
Stock Manual T25/T25 ______________________________________________ (N/A) (.63) (440 bhp)
Stock Auto T25/T25 ________________________________________________ (N/A) (.54) (420 bhp)
Turbonetics T25/T28 _______________________________________________ (64) (.63) (550 bhp)
Turbonetics T28/T28 _______________________________________________ (79) (.63) (650 bhp)
JWT Sport 500 ____________________________________________________ (N/A) (.63) (500 bhp)
JWT Sport 550 [600 Automatic put on manual car] _________________________(N/A) (.54) (550 bhp)
JWT Sport 600 ____________________________________________________ (N/A) (.63) (600 bhp)
JWT Sport 650 ____________________________________________________ (79) (.86) (650 bhp)
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