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Valves & Valve Guides

Tomei Mitsubishi Evo 4G63 EVO 4-9 1mm Oversized Valves IN/EXH

$630.00


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High Flow, Improved Durability, for Extreme & High Power Applications

Tuned engines require as much fuel mixture to enter the combustion chamber as possible. So a larger diameter design was selected to optimize flow rates. Due to the extremely high temperature conditions experienced in the combustion chamber during high power runs the durability of the valves were also addressed to improve resistance to high heat conditions. The TOMEI oversized valves were designed with the above factors and more so with the careful selection of materials to suit these conditions to the precision in the design and manufacturing processes to maximize the intake and exhaust flow rates will make your engine capable of big power when needed most.

1mm OVERSIZED WAIST SHAPE

1mm oversized valves were designed for increased flow efficiency on both the intake and exhaust side. The stem has a thinner design for maximizing air flow rate within the port with the reduced air flow resistance. This design with the materials used also allowed for a lighter product as well.

To maximize the potential of the valves purpose each factor was addressed during the design process from the surface of the valve head (umbrella section) & the Valve Seat, from Stem to Cotter are all optimized with precision for optimum operating & sealing capabilities when needed most during extreme conditions.

IN: SUH35 MATERIAL
The SUH35 material which is known for it's high heat resistance properties are usually used for the exhaust side. We chose to use it for the Intake side to suit the the demands of todays users for big power applications and for increased life.

 

EX: INCONEL 751 MATERIAL

Since the exhaust side can experience extreme exhaust gas temperatures of 1,000 degrees C (1,832 degrees F) during high power use the Inconel 751 material was no doubt the best option to choose to suit serious needs when every detail counts.

 

APPLICATION
IN/EX
VALVE
DIAMETER
(mm)
STEM
DIAMETER
(mm)
STEM
LENGTH
(mm)
SET
PART
NO.
RB26DETT
BNR32/BCNR33/BNR34
IN 35.65 5.97 102.3 163400
EX 31.15 6.94 101.6

 

SR20DET(R)
PS13/S14/S15

 

IN

 

35.15

 

5.97

 

101.4

.

163401

EX 31.15 6.94 102.4

 

4G63
EVO4~9

 

IN

 

35.00

 

6.57

 

109.6

 

163402

EX 31.50 6.54 109.6

 

EJ207/255
GDB C~G

 

IN

 

37.00

 

5.96

 

103.85

 

163403

EX 33.00 5.96 104.2

 

International Orders are GST exempt.



  • Model: 163402
  • Shipping Weight: 7kg
  • Manufactured by: Tomei




This product was added to our catalog on Tuesday 03 August, 2010.

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