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Thread: 440 or stroke 460

  1. #1
    Join Date
    Sep 2007
    Location
    high dez, CA
    Posts
    4

    440 or stroke 460

    Hey this is my first time posting so work with me plz ill answer ne thing i can. I have an 02 400ex and im looking to have the motor built by trinity racing here in so. cal. i was thinking of going with the 460 stroker kit however im worried about heating issues. Trinity said there would be no issues. I ride in 100+ degree wether and frequent dumont sand dunes and local desert around me. So my question is will i have overheating issuess with the upgrades or not? Is there ne thing to improve cooling besides air fins/scoops?

  2. #2
    Join Date
    Oct 2002
    Location
    chula vista, california
    Posts
    607
    first off, welcome to the site!

    440 will be the cheapest way to go though the 460 will be a nicer choice but also more expensive. you gotta decide what's right for your needs.

    as for cooling, take a look around and do a search on it... the few major ways to keep your motor cool are gonna be air scoops, a larger oil cooler, possibly even a larger oil tank.

    most importantly you gotta have your jetting dead on. lean jetting will also contribute to heat issues. if you are having your motor built by trinity you may want to ask them on the jetting guidance for where you ride. they'll give you a very good idea of where it needs to be.

    good luck on your build!
    02' 400ex

    -440 wiseco kit
    -11:1 compression
    -stage 2 hotcams
    -mild port work w/ matched intake
    -sparks advance key
    -K&N filter kit w/uni outter cover
    -air box lid w/ 1 3/8" hole drilled
    -duncan racing fat boy 4 system exhaust
    -front works tripple remote rezzies by Bob Bell
    -oneal bars
    -rcd oil tank
    -05 R6 LED tail
    -trail tech lights
    -maier race cut white plastics

    HOW TO install an R6 tail light to your 400EX


    HOW TO install a brake light switch

  3. #3
    Join Date
    Jan 2007
    Location
    Iowa
    Posts
    230
    I've got a 460 stroker. I do have a larger oil tank, but I do not see any signs of over heating. My 460 is sweet... tons of power
    2008 Yamaha YFZ 450 GYTR Special Edition
    8x8.5 ITP Baja Rear Rims
    20x11-8 ITP XCR Holeshot Rear Tires
    Rox Bar Risers
    Pro Armor PowerGRIP Pegs
    Pro Armor Sport Series Nerfs
    Fuel Customs Intake
    Dasa Racing Full Exhaust

  4. #4
    Join Date
    Sep 2007
    Location
    high dez, CA
    Posts
    4
    thanks for the info i will check into the cooling options because i def. don't want heating issues. another question i know its not a 450 but how do the 440 and the 460 kits hang with the newer 450's in the dunes or just in general

  5. #5
    Join Date
    Mar 2007
    Location
    MN
    Posts
    885
    My 440 makes 42hp I can hang with a stock 450 anywhere.

  6. #6
    Join Date
    May 2005
    Location
    New Brunswick,Canada
    Posts
    783
    I am parting out my 460 ! the kit is less them 3 months old like new !
    2011 Can-Am Outlander 800R X Xc
    2001 Traxter XT 500

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