Author Topic: command twin carb mods  (Read 1222 times)

0 Members and 1 Guest are viewing this topic.

Offline flatlanderfornow

  • Newbie
  • *
  • Posts: 95
  • Karma: 1
  • Gender: Male
    • View Profile
command twin carb mods
« on: July 22, 2018, 04:39:44 PM »
Our club doesn't allow enlarging the venturi, but we can do most anything else we
want as long as no air enters after the venturi. not a carb expert but is there some things
I can do besides drilling out the jets to get these engines to run better? I'm running a horizontal engine by the way.


Todd Potter
603-922-5269

Offline hustler54

  • Newbie
  • *
  • Posts: 2
  • Karma: 0
    • View Profile
Re: command twin carb mods
« Reply #1 on: July 28, 2018, 06:13:02 PM »
Depending on the use, making sure the jetting is dialed in maybe all you need to do.  I've seen that 14.7:1 A/F ratio leaves power on the table, 12.5-13:1 is typically a good performance tune.  Unless your really opening up the heads and intake ports and turning high rpm's with a larger displacement build, I'd dare to say the stock carburetor will carry you a ways.  What is the engine going to be used for?

Offline flatlanderfornow

  • Newbie
  • *
  • Posts: 95
  • Karma: 1
  • Gender: Male
    • View Profile
Re: command twin carb mods
« Reply #2 on: March 18, 2019, 04:55:57 PM »
pulling
also would like to know how to get in the upper 5k RPM range with stock valvetrain pieces
best i've been able to get is about 5200
Todd Potter
603-922-5269


Offline TomL

  • Mr. Modest
  • Turf Warrior
  • **
  • Posts: 499
  • Karma: 3
  • Gender: Male
    • View Profile
Re: command twin carb mods
« Reply #3 on: March 23, 2019, 10:46:52 AM »
Change the cam...
Tom Lavalette
Ask me about the PA MiniPro Racing Mowers
toms580@yahoo.com
Columbia, PA

 

anything