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S197 3V Fabman's build; How did we get here? Build Thread

4,440
4,203
Exp. Type
W2W Racing
Exp. Level
20+ Years
Pleasanton: 1/2 way between Sonoma and Laguna Seca
I must admit, have been going hard since 2012 so far its been great. Is the 2012+ rack any differet then the 2005 to 2011 rack?

I see they have three models for the 2011+ S197, maybe some had problems?

View attachment 69344
I don't know any details, this is the first I looked into it. I do know that some were shipped out with problems and recalled, but that's all I know.
 
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363
The 2011 racks had issues with active nibble software. The 2012 and newer racks do not have the issue. But, if its not urgent, I would get the 302R rack. It has a calibration for slicks. I am waiting on Ford Performance inventory to be replenished myself.
 
4,440
4,203
Exp. Type
W2W Racing
Exp. Level
20+ Years
Pleasanton: 1/2 way between Sonoma and Laguna Seca
The 2011 racks had issues with active nibble software. The 2012 and newer racks do not have the issue. But, if its not urgent, I would get the 302R rack. It has a calibration for slicks. I am waiting on Ford Performance inventory to be replenished myself.
Let me know if you hear anything, thanks!
 
1,142
924
Exp. Type
HPDE
Exp. Level
5-10 Years
Philly Metro Area
I think the racks are mechanically identical but the ones for the wider tires have limiters installed similar to these from Roush.

But if you need them I'm sure you can fab some yourself.
 
4,440
4,203
Exp. Type
W2W Racing
Exp. Level
20+ Years
Pleasanton: 1/2 way between Sonoma and Laguna Seca
I think the racks are mechanically identical but the ones for the wider tires have limiters installed similar to these from Roush.

But if you need them I'm sure you can fab some yourself.
I installed those limiters on my FR500 rack. There is something different in the racks though I can't tell you what that is. I know the difference between my stock GT rack and the FR500 rack was night and day and those are mechanically identical. Something that they tweak in there that makes the magic happen. I'll see if I can get some detail from Filip.
 
4,440
4,203
Exp. Type
W2W Racing
Exp. Level
20+ Years
Pleasanton: 1/2 way between Sonoma and Laguna Seca
4,440
4,203
Exp. Type
W2W Racing
Exp. Level
20+ Years
Pleasanton: 1/2 way between Sonoma and Laguna Seca
171
140
Exp. Type
HPDE
Exp. Level
5-10 Years
Lenoir City TN
The racks had different part #'s based on wheel size. The rack itself was physically the same but each differed in programming, wheel stop position, and tie rod length. The 2011 and some early 2012's had the active nibble issues which did not like bigger heavier wheels/tires/brakes. Stiffer bushings also set it into orbit. The Ford Performance rack from the 302s/302r is basically a dumb electric rack without all the features that try to drive the car for you. I put one in a couple of years ago and it has been great. You may try Watson Racing to see if they can get their hands one one, since they built the Boss race cars.
 

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