SKU: 143062

TOMEI PONCAM EJ255 JDM/EJ257 WRX STI 04-07 USDM AVCS 252-10.3mm

$1,585.07

or 4 payments of $396.27 with Info



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Description

EJ25 Single AVCS JDM / USDM


Click to enlarge







Conformity: 
EJ 255 JDM 
EJ 257 WRX STI 04 - 07 USDM




 

Features of PONCAM

■ Use of special materials 
■ High precision grinding 
■ Valve timing adjustment completed 
■ Valve spring exchange unnecessary 
■ Full range high performance 
■ Excellent acceleration performance 
■ Stable idling 
■ Effective use of variable valve timing 

 
Compliance
Part number
 
EJ 255 JDM 
EJ 257 WRX STI 04 - 07 USDM
143062
 


Currently developing further high-spec pro cams.

 
Prototype comparison test

In developing this cam, three types of prototypes required from the theoretical value were prepared, and a comparative test was conducted for each.
Observation

In the normal intake system, intake restriction occurs with peak at 6000 revolutions. 

Therefore, a cam with a wide working angle does not exhibit its effect. 

The problem of interference with the PV clearance and the cam cap occurs also in the cam with the high lift.
 
Conclusion

Specified as IN / EX 252 - 10.4 which exerts the maximum effect in normal head and does not require bolt-on mounting or machining.
 
Click to enlarge
 
 

SPEC
Duration of operation 
(degree)
Maximum cam 
lift 
(mm)
IN / EX
Maximum valve 
lift 
(mm)
Cold cam 
clearance 
(mm) [± 0.01]
Baltai 
initial set value 
central angle (degrees)
Remarks
252
10.3
IN
10.20
0.20
125 °
AVCS compatible
252
10.3
EX
10.05
0.35
115 °
 
 

Specifications

SKU 143062
Brand TOMEI
Shipping Weight 12.0000kg
Shipping Width 0.170m
Shipping Height 0.080m
Shipping Length 0.690m
Shipping Cubic 0.009384000m3

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