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
Honda MX & Off-Road Dirt Bikes
Anyone w/experiences with XR400 Power Up Kit
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="mtngoat, post: 99584, member: 18818"] My riding group has an interesting spread of modifications, which we've been able to compare and assess. One bike has the HRC (with cam) kit. Our observation is that (compared to newer bikes and mine with a 440 kit), the cam seems to improve top end and really lets the XR4 breath. The 440 seems to improve low end more. Both bikes are older and have engine wear, but on flat straight line acceleration are comparable. BTW, my dealer told me that non-factory cams are actually made from stock core turn-ins and have rapid cam lobe wear compared to the HRC cam. We conclude that the 440 is desireable for trail-riding where more low end is desireable and the cam is desireable for desert and more "flat-out" riding. The interesting thing is that both newer bikes (2000 & 2001), once dialed in with intake, exhaust, jetting, etc., are just as fast as the older bikes with the 440 or cam. We figure that's engine wear since all bikes have similar non-cam/440 mods. [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
Anyone w/experiences with XR400 Power Up Kit
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