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Review on 💪 Boost Efficiency with the Proform 66785 Piston Ring Filer Manual by Doug Ellingson

Revainrating 1 out of 5

Just spend $60

Got the 408 lq4 build I take. 2 rings filed by hand. Lasts over 20 minutes per ring. annoying when you have a lot to do. It turns a few days of romance into a few hours of romance, and the cuts are a lot more vertical. just be careful if you find that 1 turn of the handle takes. 001, don't think 5 quick spins subtract 0.005. This will take off more and you will lose your rings. I accidentally bent a few of mine.

Pros
  • Confident
Cons
  • Reliability