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Thread: 505 big bore!

  1. #1
    Join Date
    Feb 2008
    Location
    New Orleans, La
    Posts
    8

    505 big bore!

    I have an 02 400ex and have heard crazy things about the TC505 kit! Can anyone else fill me in that has one or is familiar with them. Also where can i find it??

  2. #2
    Join Date
    Jul 2007
    Location
    Stroudsburg, PA
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    4,331
    FST makes a 500cc stroker kit for the 400ex.
    1989 Yamaha YFZ350 Banshee
    DMC 916 Exhaust__K&N Filter__Boysen Reeds__13 Sprocket__+2+1 Lonestar J-arms__Works AT-Steelers Triple Rate Shocks__White Brothers Rims__Renthal Banshee Bend Bars__Powermadd Handguards__UFO Plastics__Nstyle Graphics__Ceet Cover__Turner Bumper

    "It ain't fast without mixed gas"

  3. #3
    Join Date
    Feb 2008
    Location
    New Orleans, La
    Posts
    8
    Its my first 400 and i'm just looking to make it as fast as i can. Right now it has a stage II hotcam, hmf exhaust, K&N filter w/ no lid, and its no where near what i want it to be. Its going to be set for straight line no mx or anything. Any suggestions??

  4. #4
    Join Date
    Jul 2007
    Location
    Stroudsburg, PA
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    4,331
    Originally posted by 02Ignite
    Its my first 400 and i'm just looking to make it as fast as i can. Right now it has a stage II hotcam, hmf exhaust, K&N filter w/ no lid, and its no where near what i want it to be. Its going to be set for straight line no mx or anything. Any suggestions??
    FST 500 BB kit.
    Hotcams stage 3 or webcams
    nitrous
    Heavy port with +1mm valves
    FCR carb
    1989 Yamaha YFZ350 Banshee
    DMC 916 Exhaust__K&N Filter__Boysen Reeds__13 Sprocket__+2+1 Lonestar J-arms__Works AT-Steelers Triple Rate Shocks__White Brothers Rims__Renthal Banshee Bend Bars__Powermadd Handguards__UFO Plastics__Nstyle Graphics__Ceet Cover__Turner Bumper

    "It ain't fast without mixed gas"

  5. #5
    Join Date
    Jul 2008
    Posts
    2
    were can i find the tc 505 or the fst 500 kit for the 400ex

  6. #6
    Join Date
    Aug 2006
    Location
    Indiana Pa
    Posts
    3,079
    Originally posted by Hondamaster5505
    FST 500 BB kit.
    Hotcams stage 3 or webcams
    nitrous
    Heavy port with +1mm valves
    FCR carb
    i would recommend only oversizing the exhaust valves only, because if you do the intake as well your defeating the purpose of the oversized exhaust valves
    Trx 450R - BACK IN ACTION!!!

    *2005 CRF450R*
    Pro-Action Suspension
    Pro-Circuit Ti-4 Full System
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    Hot Cam Stage 2
    Hotrods Crank
    JE 12.5:1 Piston

    2000 Mustang GT
    WAY too much to list, and still too slow

  7. #7
    Join Date
    Jan 2007
    Location
    kentucky
    Posts
    583
    The 505 kit is a big stroke i wouldnt recommened it for a everyday riding bike not only is it a very big bore but also a really big stroke as well. I had a 490 and it overheated pretty easily. I would look more into the 4mm stroker that some of the people atre making. I believe they would suit better for a trail bike all i did with mine was drag race and it was a 7mm stroker like the one you are talking about tc makes. Also i would go with a good port and polish oversize valves. The web 479 grind cam and an fcr 39mm carb to go with that. And either a sparks x6 exhaust or an hmf. that would wake your 400 up well.

  8. #8
    Join Date
    Feb 2008
    Location
    NH
    Posts
    669
    Originally posted by pro-rider46
    i would recommend only oversizing the exhaust valves only, because if you do the intake as well your defeating the purpose of the oversized exhaust valves
    Yeah which is why stock the exhaust is always a lil bigger than the intake
    2005 TRX 250EX
    2003 CRF 450
    1991 RM 250
    1987 CR 125
    1986 650 SX

  9. #9
    Join Date
    May 2006
    Location
    Stixville, Ms
    Posts
    3,429
    Originally posted by John451
    Yeah which is why stock the exhaust is always a lil bigger than the intake
    250R's...... "they gots bite wiff dat bark !!!" R's are fo sand bars.....

    '86 TRX250R (265)
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  10. #10
    Join Date
    Jul 2008
    Posts
    2
    i am building a drag bike that is why i am looking for the biggest kit i can find. money isnt really an issue i want to make as much power as possible, if any one can tell me were to find the parts i would really appreciate it

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