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
Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Yz444 Tuning: Building a Monster Torque Curve
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="Masterphil, post: 825224, member: 55234"] What should the stock squish clearance be? Also, when closing the squish down to .045" am I going to have problems with PV clearance? Is the good ol' playdough-in-the-valve-pockets method going to be good enough for checking PV clearance? Is there a better way besides using a piece of lead solder through the spark plug hole to test squish? How much would changing the squish to .045 affect LCA's?(I need to just buy one of those hotcams installation kits...a shim kit would be nice too...) What do you think about using the oversize headpipe? My calculations tell me that using a meg with the dimentions I previously listed, It would be a 4.40 degree diffuser. I read a post on TT where you said that yzf's, especially 444's, like to use short headpipes with long shallow taperd megs attached. I think I also read a post of Swiss's where he said that a 24-26" primary would be a good starting point for tuning the HP peak, or something like that. I think this would classify as a long shallow meg, but am I going too extreme on making it shallow? And since I will eventually be using the Hotcams, I would like to tune the pipe to fit the other parts of the system instead of just throwing a bunch of parts together to see what happens. If I were to use the hotcams, where would I see an increase in power using oversize intake valves? Would I see a decrease anywhere? Rich, What fuel do you think would work best for my engine? I would prefer to use VP as the midwest distributer is local for me. The modified 444 spec list(as much feedback here as possible is wanted) 97mm bore lightened 97mm 13.5:1 Wiseco Ported head????Big valves???? Hot cams 105/105LCA's .045 squish clearance (this combined with the 105LCA would give me close to 14:1CR maybe?? :aj: ) Custom meg whose dimensions will best fit the above engine system. (Great!!! Another variable to change!!!!) Swiss, I would love to discuss the meg design, specs, and construction with you in as much detail as can be at this point. Someone in a previous post suggested that I upgrade the con-rod. Will I need to do this? I am under the impression that the 426 rods are tuff-as-hell. [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Yz444 Tuning: Building a Monster Torque Curve
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