Originally Posted by Silverback
...Right now I have the best running "6.75 peak torque" Briggs L head
powered lawnmower that I've ever seen.
Your critics will tell you that the porting and milling alone are responsible for the
improvements in performance. Many people feel that because you are
fooling with something they feel is controversial and unproven you should
have done a before and after test with the grooves only.
It really doesn't matter, nothing you or I could say or do would change the
opinion of those that know it won't improve performance. Even if you provided
decisive A/B test results, the validity of the test would be questioned.
Anyway what you have done was 1. Easy to do. .and. 2. Improved
performance over OEM. Isn't that what's hotrodding is all about?