Cams
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OEM
|
S4 |
RS4 |
NA 2.8
|
| I |
E |
I |
E |
I |
E
|
| duration |
[1.0mm] |
190° |
226° |
210° |
226° |
210° |
226°
|
| valve lift |
|
7.5mm |
10.4 mm |
8.2mm |
10.4 mm |
8.8mm |
10.4 mm
|
| peak angle |
|
110° |
|
112° |
|
|
|
| timing |
[1.0mm] |
-10/20° |
38/8° |
|
38/8° |
-12/42° |
38/8°
|
Aftermarket
|
Cat cams |
Revolver |
Piper |
Loba motorsport
|
| 1004050 |
1004051 |
1004052 |
001 grind |
002 grind |
Mild |
Race |
|
| I |
E |
I |
E |
I |
E |
I |
E |
I |
E |
I |
E |
I |
E |
I |
E
|
| Duration |
[0.1mm] |
239° |
245° |
267° |
280° |
264° |
250° |
|
|
|
|
|
|
|
|
254° |
260°
|
| Duration |
[1.0mm] |
214° |
220° |
226° |
232° |
232° |
212° |
248° |
258° |
200° |
210° |
256° |
256° |
244° |
274° |
214° |
218°
|
| Valve lift |
|
8.80mm |
10.85mm |
9.25mm |
11.00mm |
9.75mm |
9.55mm |
8.9mm |
10.5mm |
7.7mm |
9.7mm |
8.26mm |
9.44mm |
8.69mm |
10.93mm |
9.00 mm |
10.8 mm
|
| Peak angle |
|
110° |
110° |
110° |
110° |
110° |
120° |
110° |
110° |
110° |
110° |
110° |
110° |
104° |
108° |
110° |
110°
|
| Timing |
[1.0mm] |
-3/37° |
40/0° |
-3/43° |
46/6° |
-4/56° |
46/-14° |
-10/20° |
38/8° |
-10/20° |
38/8° |
18(?)/58° |
58/18° |
18(?)/46° |
65/29° |
|
|
| Lift at TDC |
|
0.70mm |
1.00mm |
1.30mm |
1.70mm |
0.65mm |
0.10mm |
|
|
|
|
|
|
|
|
|
|
| Overlap |
[0.1mm] |
22° |
53.5° |
17° |
33° |
-15° |
|
|
|
| notrly Overlap |
[1.0mm] |
-3° |
9° |
-18° |
|
|
36° |
47° |
|
- The Piper intake timing still does not look right. should it be -18?