Was wondering witch engine i should get?

Black-Top S14 SR20DET Silvia 95-98
Horsepower: 220hp at 6000rpm Torque: 203 ft/lbs at 4800rpm

Turbo specs:
Compressor: T-28, 60 trim 60 mm BCI-1 compressor in T-04B housing
Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing
Center Section: Ball Bearing

Variable valve timing system and a different turbo are the significant changes from the S13 SR20DET engines. S14 uses 'low port' intake design vs. S13 'high port' design.
Performance:

The stock turbo will be safe to 13-15 psi. After that, the turbo is past its efficiency range, and power increases will fall off and are not worth the risk of turbo damage. The engine should produce 250-260 RWHP at safe boost.


Black-Top S15 SR20DET Silvia 99-Current

Horsepower: 250hp at 6000rpm Transmission: 6 Speed, Close Ratio
Injector size: 480cc/min

Turbo specs:
Compressor: T-28, 60 trim 60 mm BCI-1 compressor in T-04B housing
Turbine: Inco turbine wheel. Cast divider wall between turbine discharge and wastegate.
Center Section: Ball Bearing

Additions: 6 speed manual transmission. The 6 speed can be used on the S13 and S14 motors with no modification using the S15 driveshaft. Speed sensor is located in the differential.

Performance:

The stock turbo will be safe to 15-18 psi. After that, the turbo is past its efficiency range, and power increases will fall off and are not worth the risk of turbo damage. The engine should produce close to 300 RWHP at safe boost.

What would you Guys Recommend in a 95 240sx. I have been leaning towards the s15 just dont know how the support is for this engine compared to the S14 one

I guess that depends on what you want... namely power. Just how much power are you looking for? If you're happy with the stock power, get the S15 I guess. If you're looking for 300+ whp, I'd just get the cheaper motor and put on a bigger turbo. And about the 6 speed tranny, I've read that the guys in japan actually switch that out and back to the 5 speed because the 5 speed is stronger; that's what I've read at least.

Khiem

SO u say get a S14 or S13 blacktop (VVT or not? i want the black top no matter what) engine with the 5 speed modify it to hell?

any other opnions?

Get the s14 because it has the strongest tranny. Although the s15 is the most powerfull, it aint nothing a S14 with a larger turbo couldn't fix

like your way of thinking thanks :)


ok now should i get the SR20DET VVT or the non (i have read they have Varable Valve timing am i wrong?)