RCU Forums - View Single Post - Carbon on Exhaust Valve
View Single Post
Old 06-16-2017, 01:04 PM
  #7  
airraptor
My Feedback: (66)
 
Join Date: Jan 2004
Location: fairfield, CA
Posts: 4,191
Likes: 0
Received 4 Likes on 4 Posts
Default

Prop you're correct they can swell up causing it to run poorly. I race all of my YS engines on anywhere from 20 to 75% nitro and no real build up of carbon on the exhaust valve like other engines do. The OS engines are the worst at this