Header banner
Revain logoHome Page
Justin Butler photo
1 Level
789 Review
47 Karma

Review on πŸ”§ ProForm 66835: Maximize Engine Performance with Mini Valve Spring Tester by Justin Butler

Revainrating 5 out of 5

Great for the home player

I tested this with my own weight and a set of new springs. It seems to be between 100 and 200 pounds within 5 pounds. I clamped it in a vise on my grinder and used an old jack with a 3/4" collet to push the spring down. The QI scale on the spring and stopper makes the whole setup as good as a professional spring tester .

Pros
  • Mount Type: Vehicle specific
Cons
  • Almost never