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View Full Version : S15 SR20 vs S13 SR20

Crab Walker
10-12-2003, 05:39 PM
Hey, Could someone tell me the difference of what makes a s15 sr20 have more power than a s13 sr20? I mean there the same exact motor only one has more power... I just wanted to know why???
statik
10-12-2003, 05:48 PM
well for one, the s15 motor has VVT(like VTECH for honda). But so do some s14's so that doesnt account for all of the power gain.
AmherstSR20DET
10-12-2003, 05:53 PM
S15 SR20 comes with a T28 turbo, while the S13 flavor has a T25. Plus the VVT and a newer motor in general equates to the ~50hp difference.
zero.counter
10-12-2003, 06:42 PM
from Heavy Throttle:
S15 Silvia 99
Horsepower: 250ps 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.

S13 RED TOP
Specifications
180SX 91-93 and Silvia 91-93
Displacement: 1998cc (2.0 liter)
Cam type: DOHC 16 valve, chain driven cam sprockets
Bore and stroke: 86mm x 86mm
Compression: 8.5 : 1
Horsepower: 205ps at 6000rpm Torque: 203 ft/lbs at 4000rpm
Stock boost: 7 psi
Throttle body bore: 60mm
Turbo specs: Injector size: 370cc/min
Compressor: T-25, 60 trim 56mm BCI-1 compressor.
Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing.
Center Section: Journal bearings

S13 BLACK-TOP
Specifications
180SX 94-98
Displacement: 1998cc (2.0 liter)
Cam type: DOHC 16 valve, chain driven cam sprockets
Bore and stroke: 86mm x 86mm
Compression: 8.5 : 1
Horsepower: 205hp at 6000rpm Torque: 203 ft/lbs at 4000rpm
Stock boost: 7 psi
Throttle body bore: 60mm
Turbo specs: Injector size: 370cc/min
Compressor: T-25, 60 trim 56mm BCI-1 compressor.
Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing.
Center Section: Journal bearings

S14 BLACK-TOP
Specifications
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.
weirdstyles.net
10-12-2003, 07:03 PM
Originally posted by zero.counter


SCORE!

with the swift factualness of zero.counter
mrmephistopheles
10-12-2003, 07:47 PM
ah holy crap.
Where's my search nazi's when I need them!?
RBS14
10-12-2003, 07:53 PM
right here!!!!

searchsearchsearchsearchsearchsearchsearchsearchse archsearchsearchsearchsearchsearchsearchsearch!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!! FOR GOD's SAKE!!!!!!!!!!!!!!!!!!

mission completed.:bow:
sykikchimp
10-13-2003, 11:48 AM
Originally posted by statik
well for one, the s15 motor has VVT(like VTECH for honda). But so do some s14's so that doesnt account for all of the power gain.

vvt isn't really like vtech, b/c it doesn't have 2 different cam profiles
statik
10-13-2003, 12:28 PM
Originally posted by sykikchimp
vvt isn't really like vtech, b/c it doesn't have 2 different cam profiles

ahh i just assumed it worked similar, how does it work?
Steeles
10-13-2003, 12:32 PM
Originally posted by mrmephistopheles
ah holy crap.
Where's my search nazi's when I need them!?

wheres my thread locking banning :mrmeph: when we need him?
statik
10-13-2003, 12:32 PM
Originally posted by statik
ahh i just assumed it worked similar, how does it work?

i decided to NOT be lazy and look it up =], anyone whos interested:

VANOS and VVT are used by BMW, Toyota, and various other car manufacturers. These types of systems allow earlier or later valve opening through cam phasing. The camgear changes the phase (or position) of the camshaft based on engine load, and is controlled by engine management system according to need, and actuated by hydraulic valve gears. At high speed for example, the inlet camshaft could be rotated in advance by 30 degrees or so to enable earlier intake opening. Unlike VTEC, these types of systems come closer to infinite variable timing, since they do not rely on changing cam lobes to vary timing.

from aatap.com
sykikchimp
10-13-2003, 01:13 PM
good work! for a bit more info, Nissan has NEO VVL which actually does work like VTECH.
Crab Walker
10-13-2003, 04:55 PM
Originally posted by sykikchimp
good work! for a bit more info, Nissan has NEO VVL which actually does work like VTECH.


So, which motors are equiped with NEO VVL?

and i thoight VVT stood for Variable Valve Timing...
statik
10-13-2003, 05:01 PM
Originally posted by Crab Walker
So, which motors are equiped with NEO VVL?

and i thoight VVT stood for Variable Valve Timing...

sr20VE for one

VVT does stand for Variable Valve Timing, who said otherwise?
noodl35
10-13-2003, 08:45 PM
vtech as in the phone? =]

its VTEC
sykikchimp
10-13-2003, 08:54 PM
LOL

<-----obviously NOT a honda guy... :coolugh:
statik
10-13-2003, 09:10 PM
Originally posted by noodl35
vtech as in the phone? =]

its VTEC

my bad =]
nrcooled
10-14-2003, 06:34 PM
Originally posted by Crab Walker
So, which motors are equiped with NEO VVL?


Also the R34 had a RB25DE I6 NEO VVL equipped engine making ~200hp
nrcooled
10-14-2003, 06:38 PM
The R34 GT-V was a special edition model in the R34 line-up. It shares the same chassis and components, such as brakes, wheels, and suspension of the GT-T, but is powered by a naturally aspirated RB25DE powerplant. Despite being N/A, the Neo Strait 6 engine with VVT puts out about 200PS in stock form.
mrmephistopheles
10-14-2003, 11:44 PM
I shoulda laid this thread down a few days ago..
*stab*stab*stab*