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
400 with a 520 Piston/Cylinder
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="Shaw520, post: 145323, member: 18459"] Bud-Man, you are correct, but the crank/rod assemblies are different, which is the reason KTM located the 400 wrist pin 4mm lower on the piston to create the proper compression at TDC. As for your confusion; the stock 520 bore (95mm) X the stock 400 stroke (64mm) will leave you with 463cc. Assuming we're installing a stock 520 cylinder/piston on a stock 400 crank, the rod OR the wrist pin will have be lengthened OR moved 4mm to achieve proper compression. Which brings us back to my first post. These parts are not interchangable without some machining. Now,.... if Weisco comes out with a piston that'll do just that! :cool: [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
400 with a 520 Piston/Cylinder
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