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Thread: Honda 450rx.

  1. #61
    Join Date
    Aug 2006
    Location
    Arlington, Wa
    --
    1,027
    looks great. Keep the pictures comin'
    Charlie Don't Trike

    85' ATC 350X
    85' ATC 250SX
    85' YTM 225DX (sweetie)
    84' ATC 200 auto X
    85' ATC 70
    85' YT 60


    My Partz Auctions

  2. #62
    Join Date
    Mar 2007
    Location
    louisiana
    --
    28
    i was planing to do the same thing .i was going to put an trx450r engine into an atc 200s frame

  3. #63
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686
    It's been a while since I've updated this thread, just got done swapping In a 02 CRF 450 engine. WOW, the older TRX engine Is mild compared to the CRF. This thing Is an ANIMAL now. Lots of things needed to be changed. All the motor mount's, slight air box boot mod. The CRF engine Is alot lighter & fits the frame with lots to spare. The crf engine Is one ass kicken engine. Here's a few pic's.


    I had to really lean the CRF forward to keep the sprocket In the correct place. Big mods to the cylinder head also to make It work. It was all worth It, I love the power
    Attached Thumbnails Attached Thumbnails CRF 450 engine 1.jpg   CRF 450 2.jpg   CRF 450 engine 33.jpg   CRF 450 333.jpg  

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  4. #64
    Join Date
    Mar 2004
    Location
    North Central Ohio!!
    --
    2,712
    Now you just need some 450R footpegs!
    2007 YAMAHA YTZ450 went to a great home RIP Sam


  5. #65
    Join Date
    Nov 2003
    Location
    Newfoundland
    --
    5,281
    The TRX is way detuned compared to the stock CRF450. Bet the front end is super light under throttle.
    My Feedback 85 TECATE 500 08 Honda 450R

  6. #66
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686
    Quote Originally Posted by BigGreenMachine View Post
    The TRX is way detuned compared to the stock CRF450. Bet the front end is super light under throttle.

    Yes I would say your right. The front end Is very light now. I don't mind It though, the power Is smooth. It's radical If you just It, gotta climb on the tank

    Derrick, I'm waiting till winter to re-work the footpeg's. I need to practice riding this thing so I'm ready to get my butt kicked by you guys on Labor day

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  7. #67
    3leggeddog's Avatar
    3leggeddog is offline The sun shines on a dogs ass every now and then Got the holeshot
    Join Date
    Nov 2004
    Location
    ohio
    --
    2,534
    so the trx,and crf bolt up different?damn,i was wanting to swap a crf motor into my trx.so i guess we need to talk about them internals you got!!!!

    give me a call,i lost your number

    614-296-1454

    i would like to have you build me a motor,port the head of course,and slap thos crf into my motor.holla at me bro
    Full Walsh CRF 450 hybrid 250r

  8. #68
    Join Date
    Sep 2002
    Location
    New Hampshire
    --
    794
    The trx engine can easily make the same power the crf version can, but there are quite a few differences. Cam, head, piston, and others on the primary. Stock 07 450r's make close to 40 give or take, while the dirtbike is making about 50 give or take. The 450 motor is pretty serious technology in the quad or the bike. The quad is just a bit choked up. Anyone thinks they can get onto a quad.



    Either way I totally dig this build. From the first ride on my trx450r the only thing I could think of was "this would be the best trike. ever."...glad to see somebodys doing it!

  9. #69
    gaukel350x's Avatar
    gaukel350x is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Jun 2007
    Location
    El Cajon
    --
    218
    Hey jason you said if we have the 450 motor and the 350x bike you would do the conversion for us?
    I mean not for free but money does talk.
    What I own:
    1985 honda 350x
    1974 yamaha mx 125 aka "champ"
    1993 honda 110 mini bike
    1986 kawasaki 300 jetski
    1987 Ford Ranger Prerunner

    Rider for Life

  10. #70
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686
    Yes I could do It, but the time Involved Is kinda crazy. The cylinder head has to be modified big time to make the crf engine fit In a 350x chassis. My buddy that owns the ban saw about passed out when he saw what I did to a perfectly good crf cylinder head

    I mentioned before, that I saved all the templates when I built both 450's. So anything Is possable, I guess.

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  11. #71
    gaukel350x's Avatar
    gaukel350x is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Jun 2007
    Location
    El Cajon
    --
    218
    What do you mean by the cylinder has to be moded, do you mean cutting?
    How much did the whole project cost you if you don't mind to say.
    What I own:
    1985 honda 350x
    1974 yamaha mx 125 aka "champ"
    1993 honda 110 mini bike
    1986 kawasaki 300 jetski
    1987 Ford Ranger Prerunner

    Rider for Life

  12. #72
    gaukel350x's Avatar
    gaukel350x is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Jun 2007
    Location
    El Cajon
    --
    218
    Jason you said you had all the templates from the 450 projects right, well I'm gonna dgaf and start this glorious project. I was wondering if I could (if you don't mind) get written down on paper copys of all the materials you used, all the specs and measurements, and every little detail you used and did so I can make this project perfect as possible, without damaging my frame and other vital parts.
    I'm first gonna get a kawasaki tecate so I have something to mob while I'm doing this project, done by the master himself Mr. Halls.
    What I own:
    1985 honda 350x
    1974 yamaha mx 125 aka "champ"
    1993 honda 110 mini bike
    1986 kawasaki 300 jetski
    1987 Ford Ranger Prerunner

    Rider for Life

  13. #73
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686
    As soon as I get my aluminum frame done, I just might have a modified 350x frame & tripples for sale. I have crazy amounts of time In gussoting the stock frame. If you have a stock frame to compare to, you will see just how much has been done to this one.

    The Intake has to be cut off the head & moved over about 1" so the carb will clear the frame on the left side.

    I don't have an easy way to resize picture's, so It's easier for me to use photobucket. Sorry for the huge pic's & the need to scroll sideways.






    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  14. #74
    gaukel350x's Avatar
    gaukel350x is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Jun 2007
    Location
    El Cajon
    --
    218
    Well how much would you sell it for cause I would gladly buy it, that would make everything eaiser. Ya I would be grateful for that.
    What I own:
    1985 honda 350x
    1974 yamaha mx 125 aka "champ"
    1993 honda 110 mini bike
    1986 kawasaki 300 jetski
    1987 Ford Ranger Prerunner

    Rider for Life

  15. #75
    Join Date
    Feb 2010
    Location
    Visalia, CA
    --
    720
    Yea yea old thread. BUT did this frame ever sell? Or was it even FOR SALE?

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