Supra Waste Gate Size Turbo size

[AllStreet]

I need to know what size wastegate I need for this turbo on my supra with a 3" exahust

*
* CAPABLE OF 300-400 HORSEPOWER
* CAPABLE OF 25-35 PSI OUTPUT AT PEAK POWER PERFORMANCE
* EXTERNAL WASTEGATE
* OIL COOLED
* TURBO FLANGE: T4
* 3" INLET 2" OUTLET
* COMPUTER BALANCED INDIVIDUALLY
* COMPRESSOR
INDUCER: 52.8mm
EXDUCER: 75.5mm
TRIN: 49
A/R: 0.50
* TURBINE
INDUCER: 57.8mm
EXDUCER: 73.4mm
TRIN: 62
A/R: 0.63
?
Inlet 3" Outlet 2" Bearing Wet Floating Bearings Oil Inlet 1/8 NPT Oil Inlet Flange Standard T3/T4 Flange, Swaps 350 WHP Working Pressure: 25~30 PSI Compressor .50 A/R Compressor Turbine .63 A/R Turbine Compressor Wheel .57 T Compressor Wheel
Exducer: 3"
Inducer:2" Turbine Wheel Exducer: 2.2"
Inducer:2.58" Hot Side .58 5 Bolt Standard Hot Side Works for
Perfect for any 4-6 cylinder.
Mitsubishi Eclipse, Honda Civic, Prelude, Integra, Ford 2.3L Turbo Etc.


Thank you respond as quickly as you can.

 

[Dan_Gyoba]

Whatever wastegate will fit on your manifold, I'd imagine. That's not exactly a huge turbo to need something extra.

 

[Fletch124]

Your manifold is going to be flanged for a 40mm HKS wastegate. Downside is this wastegate is like $500-$600. I bought Tial 38mm flanges and a Tial 38mm wastegate so Im just going to have to cut the old wastegate flange off and weld the Tial on.

Your not running a ridiculous amount of power or boost so a 38mm would be perfectly fine. Brent has been helping me figure out my wastegate situation because he has the same manifold and wastegate, he dyno'd 700+rwhp too with no wastegate problems.

 

[zurud]

That's a tiny turbo for 4 banger civic. All that work for 53mm turbo. A lot easier and cheaper with ct26 57 trim, same horsepower. I guess use whatever wastegate your manifold is flanged for.

 

[starscream5000]

A smaller wastegate will let you build high boost easily, but a larger wastegate will control that boost better.

Think of a wastegate as a power restictor.

 

[AllStreet]

Well from what I have researched I did buy a 44mm Tial wastegate I don't
care about price, b/c I know if this thing fails your f"cked

 

[IJ.]

The paradox with WG's is the more boost you run or the looser the AR the less gate you need as it's not bypassing much volume to control the shaft speed.

If you have a big turbo with a tight AR that you want to run low boost you need a huge gate.

 

[st2b]

Is it possible to use an external wastegate on a ct26?
Possibly delete the internal wastegate?

 

[AF1JZ]

Yes, just weld the stock wastegate flapper closed and take off the vacuum line.