PORSCHE APPLICATION
Swirl Polished Performance Series

SI Valves

 

Ideal for both competition and street applications, they are similar in material and design to SI's competition valves, but manufactured in large production runs for all of the most popular applications. Because of the fully automated (robotic) production, SEV-series valves are priced lower than racing models, yet feature the same premium quality stainless steel forgings, chrome stems stellite tips and swirl-polishing. If you do not see a valve you need in the Competition or Silver line Series, use the Portflow, as they are suitable for these applications.

Quicksilvers feature increased undercut stems and thicker margins for increased flow and performance.

SI Valves

Back to SI Valves Menu

MODEL
TYPE
YEAR
ENGINE DISP.
CYL.
HEAD
DIAMETER
LENGTH
PART NUMBER
PRICE
$ EA.
944S/928S 4V
IN
1986-On
2.5/5.0
4/8
37
112
I-T30124
21.44
944S/928S 4V
EX
1986-On
2.5/5.0
4/8
33
113.6
E-T30146
21.44
964/993
IN 
ALL
3.6
6
I-T30279
25.25
964/993
EX
ALL
3.6
6
E-T30188
30.46
968
IN
ALL
3.6
4
I-T30288
30.46
968
EX 
ALL
3.0
4
E-T30289
32.00
911
IN 
1964-68
2.0
6
39
112
I-T3050
30.46
911
EX
1964-68
2.0
6
35
112
E-T3052
30.46
356 Carrera
(4 cam)
 IN
ALL
1.6
4
50
120
I-T3055
69.75
356 Carrera
(4 cam)
 EX
ALL
1.6
4
40
117
E-T3947
69.75
911 T, L, S
IN
1965-77
2.2-2.7
6
46
114.5
I-T3063
27.67
911 T, L, S
 EX
1965-77
2.2-2.7
6
40
113.5
E-T3064
29.22
911SC, Carrera
IN
1976-87
3.0-3.2
6
49
110
I-T3070
27.67
911SC, Carrera
 EX
1976-87
3.0-3.2
6
41.5
108.5
E-T3072
27.67
2/4 Carrera
IN
1995-On
3.8
6
STOCK
STOCK
I-T99338
38.75
2/4 Carrera
 EX
1995-On
3.8
6
STOCK
STOCK
E-T99338
46.50
930 Turbo
IN
1976-87
3.0/3.3
6
49
110
I-T3073
30.46
930 Turbo
 EX
1976-87
3.0/3.3
6
41.5
108.5
E-T3071
30.46
928 2V
IN
1977-85
4.5
8
43
110.5
I-T3078
26.35
928 2V
 EX
1977-85
4.5
8
38
111
E-T3079
32.16
924 Turbo
IN
1980-82
2.0
4
40
133
I-T3084
30.46
924 Turbo
 EX
1980-82
2.0
4
36
133
E-T3085
30.46
944/928 2V
IN 
ALL
2.5/5.0
4/8
45
111.5
I-T3089
17.82
944/928 2V
 EX
ALL
2.5/5.0
4/8
40
112
E-T3087
17.82
914/4-912E
IN 
1970-76
2.0
4
42
117
I-T3996E
12.06
914/4-912E
 EX
1970-76
2.0
4
36
117
E-T3997
30.46
924
(Non Turbo)
 IN
1976-82
2.0
4
40
137
I-T3331
27.67
924
(Non Turbo)
 EX
1976-82
2.0
4
33
137
E-T3323
27.67
917K
IN
ALL
I-T917K
CALL
917K
 EX
ALL
E-T917K
97.63
356/912
IN 
1964-69
1.6
4
38
118
I-T3047
CALL
356/912
 EX
1964-69
1.6
4
34
128
E-T3048
24.26

 

Call 1-877-354-3812 to order
Your SI Performance Valve Today!!

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