best mods/upgrades for yfz 450? - ATV Enthusiast Community

Go Back ATV Enthusiast Community > General Discussion > Performance Mods and Project Quads

LinkBack Thread Tools Search this Thread
Old 07-06-2009, 04:06 AM
Weekend Warrior
Join Date: May 2009
Location: Norfolk, NE
Posts: 3
Default best mods/upgrades for yfz 450?

i just bought this fourwheeler about a month ago with new piston, rings, timing chain, cylinder, battery, gaskets, etc. ran great until the other day i was riding and started running ruff and then just quit and wouldnt start so we cleaned carb and everything and i kinda had a feeling it was my crank bearings.. well got it together and started and sounded ok but was kinda loud in the motor but it always was till i took off and right away started grinding and shut off and locked up.. if i roll it backwards itll come lose and turn over for a second then lock back up. pretty sure now its my crank bearings but i havent got it apart yet to see whas all rong..anyways i wanna know what the best mods are to get more power out of these it has an exhaust power up jet kit, were going to retard the exhaust cam and do the mod for the crank bearings so it doesnt starve it of oil..any otehr suggestions of what i should do? thinking about putting a stroker crank in it but ive heard it hurts them more then helps? anything you can think of let me know
Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Custom Blaster Parts paulters Performance Mods and Project Quads 3 09-27-2006 10:27 PM

450, atv, crank, crankshaft, loud, mod, mods, motor, performance, race, se, tips, upgrades, yfz, yfz450

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 01:47 PM.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company