View Single Post
Old 06-26-2008, 07:23 AM   #7 (permalink)
Shawn D.
Harebrained Idea Skeptic
 
Join Date: Jun 2008
Location: Alpharetta, GA
Posts: 211

The White Car - '84 Mercedes-Benz 300td
90 day: 28.84 mpg (US)

The Blue Car - '86 BMW 535i
Last 3: 23.86 mpg (US)
Thanks: 18
Thanked 13 Times in 9 Posts
Quote:
Originally Posted by Lazarus View Post
You can mod a pair of NGK's by drilling a 3/32 hole in the side electrode so that the spark explodes through the center of the strap. It seemed to help rpm revs. It's basicly the same thing except it's less then $2 a plug. I did not see an increase if FE but it did seem to run better.
The perceived improvement was probably due to the sharp edge of the hole, not the hole itself. I'd be concerned about the tip of the ground electrode overheating now that the cross-sectional area is reduced there.
__________________

  Reply With Quote