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20/22R HEADERS
ULTRA
TORQUE HEADERS | 3.0 V6 HEADERS |
2.7 HEADERS
CATALYTIC CONVERTERS | HEADER SERVICE PARTS / STUD KITS
ENGINE SWAP HEADERS
HI-TECH
ULTRA TORQUE
TRI-Y HEADERS
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NWOR's
TRI-Y DESIGN:
This design pairs the small 1-3/8" primary tubes into
1-1/2" secondary tubes-a four
into two-two into one formation. On the 20-22R Toyota
these small tube Tri-Y headers significantly increase the
cylinder scavenging effect by using the pulse of exhaust
velocity from another cylinder. The
Tri-Y is especially effective on Toyota's 20-22R cross-flow
head design. NWOR offers
eight 4cyl headers, all with different,
welded-in-place emission fittings. All fit properly,
are guaranteed, and produce strong horsepower gains in the
2000-4000 rpm range, especially on the EFI Toyota
engine. Dollar for dollar,
no single investment in Toyota truck performance equipment
will do as much to improve the low
and mid-range performance and efficiency of the 20-22R
Toyota engine as our NWOR Tri-Y HEADER SYSTEM.
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This NEW and IMPROVED header
surpasses the best, which
we already had!!!
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BENEFITS:
Dramatic increases in horsepower and low and mid-range torque,
up to 25% over stock-12% over any four-into-one header. Significant
gains in fuel economy. Quick and simple installation. This
header fits properly!
| 1979-95 |
Header
System non-emission version |
N31001 |
| 1979-83 |
Header
System (Type A)* with smog equipment
fittings,
O2 sensor and hot air pick-up |
N31002 |
| 1984-85 |
Header
System (Type B)* with smog equipment
fittings,
O2 sensor and hot air pick-up |
N31003 |
| 1984-85 |
Header
System (EFI) with O2 sensor only |
N31004 |
| 1986-87 |
Header
System (Type B)* with smog equipment
fittings,
O2 sensor and hot air pick-up |
N31005 |
| 1986-87 |
Header
System (EFI) with O2 sensor only |
N31006 |
| 1988-95 |
Header
System (EFI)* (Type B)* with
smog equipment fittings,
O2 sensor and hot air pick-up |
N31010 |
EMISSION
HEADERS*
| All
emission headers feature fully machined
air injector and oxygen sensor mounting flanges welded
in place in the proper location. This allows proper
retrofitting, and is acceptable at most vehicle inspection
stations. NWOR offers optional precision-engineered
header-to-catalytic converter hook-up pipes. To Order:
(Example) N31002 header uses a N31002-HP converter pipe.
See page 10 for photo. |
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IMPORTANT ORDERING INFO:
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Please
check carefully before ordering.
Look at your exhaust manifold after removing the heat shield
to identify emission tubing style as shown below. NWOR headers
are built precisely for each model's emission
fittings. |
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