Home
Basic Dirt Bike How-To's - Video
Dirt Bike How-To's - Video
Living The Moto Life - Video
Bike Tests | Shoot-Outs - Video
Forums
What's new
Latest activity
Log-In
Join
What's new
Menu
Log-In
Join
Navigation
Install the app
Install
More options
Close Menu
Forums
MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
kx 80 ported jetting problem
Reply to thread
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
[QUOTE="whenfoxforks-ruled, post: 1393101, member: 73147"] Go with what the plug tells you. Pro circuit is not jetting your engine, you are. If its rich, lean it. Start at the pilot, not the main. Hide the "porting" tools, do not do that anymore. Its not porting, making it pretty, making it seemingly flow better, shinier or bigger. Porting truly, involves altering the openings in the cylinder bore. A halve of a teaspoon of aluminum removed from the exhaust, could very well ruin the cylinder. Unless you can put it back to how it was before, down to the existing texture. I have done what you have, before, as have many others. To do it properly, you would need a right angle porting tool, a virtual 2 stroke engine soft ware program, and read up on every paper and SAE paper that Professor Blair, Eric Gorr and Rich Rohrich have written. Catch up work, they have done the hard part, and have already ruined plenty of cylinders. Its not like you figure, there is a specific volume and flow for a reason, scientifically and seat of pants proven. Eric has some very good basic manuals for 2 stroke performance, check out Forward Motion. And 2 stroke MX race bikes are usually engineered to the edge already, anymore and you will have a 10 minute rebuild engine instead of a 5~7 hour rebuild engine. That choice is yours. Vintage Bob [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
kx 80 ported jetting problem
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top
Bottom