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Spring Pressure - GEN4 WG 38/40/45/50 Lite & IWGUpdated 3 months ago

Refer to this Chart for Custom Spring Applications

  1. 7psi Gen4 external wastegates are built with 1x7psi middle spring.
  2. 7psi Gen4 IWGs are built with 1x7psi outer spring.
  3. 14 psi Gen4 external Wastegates and IWGs are built with 1x7psi middle spring + 1x7 psi outer spring.

Spring Colour
Brown / Black
Brown / Grey
Brown / Purple
Brown /Red
Brown / Blue 
Brown / Pink
Part Number
Free Length
32mm
36mm
43mm
52mm
68mm
60mm
Outside Diameter
29mm
29mm
36.5mm
36.5mm
44mm
44mm
Spring Location
Inner
Inner
Middle
Middle
Outer
Outer
Spring Pressure
3psi
5psi
7psi
11psi
10psi
7psi

Desired Spring Pressure










PSI
BAR
KPa
Brown / Black
Brown / Grey
Brown / Purple
Brown /Red
Brown / Blue 
Brown / Pink
3
0.207
20.68
X





5
0.345
34.47

X




7
0.483
48.26


X



10
0.69
68.95




X

11
0.76
75.84



X


12
0.827
82.74

X
X



13
0.89
89.6
X



X

14
0.965
96.5


X


X
15
1.03
103.4

X


X

16
1.1
110

X

X


17
1.172
117.2


X

X

18
1.241
124.1



X

X
19
1.31
131

X
X


X
20
1.38
138
X

X

X

21
1.488
144.8



X
X

22
1.517
151.7

X
X



23
1.59
159

X

X

X
24
1.655
165.5
X


X
X

26
1.793
179.3

X

X
X




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