SW20 Turbo Swap...

[robertsmb]

What is the differnce between this turbo and the stock turbo? I need specifics.. like which one is bigger smaller, better worse, power and everything.. what do these numbers mean?

HKS GT2540R
Compressor
Wheel - 46 Trim 51.7 Inducer / 76.2 major
Housing - 60 inlet / 50 outlet, 0.50 a/r

Turbine
76 Trim 53.8 Major / 47 Exducer
Housing
GT25 inlet / GT25 outlet 0.64, 0.86 a/r

VS.

Stock 92 MR2 Turbo, CT27...

[wvturbo2]

what are you saying bout the stock turbo ? the ct 26 is stock...

[robertsmb]

actually, I think I was wrong.. I think the CT20 is stock...

but what Im asking is.. if you take off the stock turbo and add this GT2540R.. is that a bigger turbo? more effiecent?

is 10psi in the stock turbo the same as 10psi in the GT2540R? I have heard that bigger aftermarket turbo's will produce the same effects as stock turbo's but using less boost... i am jumping into a realm of things that I dont know a lot about, but am willing ot learn....

[JekylandHyde]

The stock turbo, in the US, is the CT26.
The CT20B came on later model MR2s in Japan that never came to the US.
Many people have imported CT20bs thoughs.

The CT27 is a turbo from ATS Racing (atsracing.net).

[robertsmb]

ok so.... now that we have determined the stock turbo's...

can anyone answer the original question? if i buy an mr2 with a GT2540R turbo already on it.... whats different about that turbo from stock? what can i expect??

[robertsmb]

by the way.. this is what im buying... i think its an ok deal.. but im gonna check it out more before i pay.

138,105 miles. Has never been in an accident. carfax attached (see next page)
5 speed manual transmission.
It was fully serviced: 3/15/2005
Timing belt, timing belt idler bearing, timing belt idler, timing belt tensioner, crankshaft gear, water pump, thermostat, thermostat gasket, camshaft seal, oil pump seal, front crankshaft seal, oil pressure sender, knock sensor, a/c belt, alternator, spark plugs, air filter, oil pump housing seal, ported exhaust manifold, ported cylinder head, helicoil all the stripped bolts, coolant flush, boiled radiator, greddy SMIC intercooler, TKO 3" exhaust put on, with new turbo.
new rear tires : 10/27/2005
MOD LIST:
Performance Mods
Upgraded Turbo: GT2540R internally gated at 11psi spring
Upgraded Intercooler: Greddy Side Mount Intercooler
Exhaust: eXtreme Boost 3” Down Pipe
Exhaust: KO Racing 3" Catback
Engine: Ported intake, ported exhaust manifolds, Ported head
Clutch: ACT Stage 3 clutch (less than 9k miles on it, really beefy)
Intake: ATS Throttle Body Inlet
Electronics
Boost Controller: Blitz SBC Spec ID
Greddy EGT and Boost electronic gauges
Apexi Turbo Timer
Suspension
Tokico 5ways adjustable shocks
Intrax springs .5” inch lowering springs
Misc
TRD short shifter
TRD shift knob