Heres a compilation of notes on Bilstein valving and part#s//valving numbers, pulled from Bilsteins tech manuals and elsewhere online
Understanding Bilstein Valve Ratings (OLD STYLE)
Damping forces of Bilstein valvings for Off-Road are measured in Newtons at a velocity of 0.52 meters/seconds (approximately 20 inches/second). The ratings shown correspond to those measurements; rebound force is the first number, followed by compression force (rebound / compression). Conventionally, the ratings are written as one tenth the damping force in Newtons.
EXAMPLE: Valve rating: 275 / 78
Rebound force is 2750 Newtons at 0.52 m/s
Compression force is 780 Newtons at 0.52 m/s
Higher numbers mean higher (firmer) damping forces. For example, 360/80 has more control (is firmer) that 275/78, while 170/60 has less control (is softer) than 275/78.
For valving recommendations please refer to the Valving Guide.
S6G-1030 80/160 lbs converts to 355/711 [email protected]/s (~20in/second)
From eshocks.com
Recommendations for 7100 series T1 baja
Sport F 180/75 rear 360/180
prerun 180/75 550/240 (/2 shock rear equivalent)
Bilstein will machine the coil-over groove for $10 per shock: http://www.bilsteinus.com/services.php
1" from end of shock body, 0.060" WIDE, 0.025" DEEP.
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To help you better understand Bilstein's (newer) Numbering System, here is an example:
(I guess Bilstein gave up on SI units?)
S6G-1030=
"S" = Steel Body (grooved for snap ring)
"6" = Stroke in inches
"G" = 36mm (Small Body) Diameter
"10" = Rebound Dampening (Out)
"30" = Compression Dampening (In)
Note "90" is still only 2660 N so nowhere near the usual rebound force of common T1 rear off-road shocks.
Code: Select all
New code rebound compression
NEW lb @20 ips OLD N/10 @.52m/s (~20 ips)
10 80 36
20 120 53
30 160 72
35 185 82
40 210 93
45 235 105
50 260 116
55 290 129
60 320 142
65 350 156
70 380 169
80 480 214
90 600 266
http://farnorthracing.com/autocross_secrets16.html#