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Thread: 400ex turbo kit on a 350x, how hard can it be?

  1. #1
    Join Date
    May 2009
    Location
    Perryville MO
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    400ex turbo kit on a 350x, how hard can it be?

    I have a 85 350x that I want to really beef up. I also have a yfz450 that I have toyed with the idea of putting that engine in the 350x, but I really don't want to trash my already working yfz450. So I have looked through tons of threads and seen someone touched upon this subject on a 200 with a 9:1 compression ratio but if memory serves me right the 350x has a 8.5:1, which should work for a turbo. Now I have also read that the 400ex and 350x head pipes are really close to the same except you need to do just a little bit of cutting to get it to fit. I know about EFI and rigging up that stuff. I'm just wondering if it was possible or would a CR500 engine fit?? Just what different engines can you cram in it??? Any input will help out.

  2. #2
    Join Date
    Sep 2007
    Location
    oregon
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    2,292
    would be a cool idea but get ready for your home work.

  3. #3
    audioworks04's Avatar
    audioworks04 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Oct 2008
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    Kansas City, KS
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    332
    really cool idea, just doesnt seem very ridable. On the 400ex you have a frame and a whole front end that protect the turbo from gettin hit, but on a the 350x you wouldn have anything. Maybe build a cage around it?

    2005 CRF450R Alum Frame build done, switching to inverts.
    86 trx250r fmf fatty fmf q k&n v force reeds gold valve rear shock with eibach spring.
    86 atc250r stock sand only
    88 NX250 mint rainy day
    85 kawi js550 stand up basicly stock
    87 kawi js550 scary fast for a stand up

  4. #4
    Join Date
    May 2009
    Location
    Perryville MO
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    I know we have all heard of that guy wanting to turbo charge something that no one else has. Now I am not saying for sure that I will go through with this, I am merely just weighing out my options. I am also thinking about electric start. I never could start that thing very easily (120lb.) I have a fair amount of knowledge on turbos and just about anything you can think of. I will post some pics when I leave work of the bike. I just want it to be as fast as my YFZ450 and maybe a little more.

  5. #5
    Join Date
    Aug 2002
    Location
    Jamul, CA. near San Diego
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    1,605
    just about everything that you can think of doing to a trike has been done........ even utilizing newer suspension and the newer 4 poke engines..........Thanks for the correction Black Sheep

    several trikers have turbo'd trikes

    1 triker turbo'd a chinese clone and stuck it in a ATC70............

    some member here did a 200cc ..........

    and I own a 500cc
    Last edited by mymint87; 05-18-2009 at 06:37 PM.
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