Sonnax Servo
Sonnax Servo On the level 4 tranny im ordering from FLT it comes with a corvette servo. Would it be worth it to add the sonnax servo option? Any feedback would be appreciated.
Joined: Nov 2003
Posts: 6,216
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From: Wichita KS / Rancho San Diego
Talk to FLT. They probably stick with the Corvette servo because there have been issues with the Sonnax 2nd servo causing breakage. It's generally recognized that the Corvette servo is adequate while the Sonnax servo can be overkill.
The fourth servo would be a nice upgrade.
The fourth servo would be a nice upgrade.
Its a good upgrade there generally is only risk of damage with the stock band and the anchor breaking off but I am sure they do not use the stock band and I am sure they would not offer it if they thought there would be a problem with it .
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Joined: May 2006
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The Sonnax servo has not caused any band breakage as far as I know. The Superior "billet" servo is the one that has "occasionally" caused a 2-4 band breakage problem, but can be solved with the right separator plate feed hole sizes, and the right accumulation. Rick Abare's mid 9 second 1996 Firebird uses the Superior "billet" servo with the Borg Warner Hi-Energy band. He broke the first Borg Warner Hi-Energy band in about 450 passes, and now well over 1,500 passes (on the same band) with no more band breakage. I am not a fan of the "billet" servo, but there occasions where it could work. The Sonnax servo uses the cushion springs, like the Corvette servo, and should not present any problems as far as "band breakage".
