The IT465 and IT490 thread

Discussion in '2 smokers' started by dawid, Mar 10, 2008.

  1. 4V5

    4V5 n00b

    Joined:
    Mar 20, 2011
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    Gidday Sorry for reviving an old thread but Here's my two 465's, the stock one has been slowly rebuilt from a wreck over the last 5 years, the other one is freshly rebuilt from the remains of the donor bikes bought to repair the first one, the forks are from an 89 Husky 510 with an XR600 rim adapted to fit. the engine is a YZ465G barrel with a YZ490J crank with the IT465H clutch and gearbox.. a real bitsa but it's good to see it together again!!

    here's the links to both the builds:

    http://www.yamahait.com.au/forum/index.php/topic,215.0.html

    http://www.yamahait.com.au/forum/index.php/topic,1012.0.html



    Cheers!
    Leslie
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    #81
  2. BronkoRob

    BronkoRob Adventurer

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    hoping to revive the thread and keep the wealth of knowledge flowing. here is a crazy idea i have been throwing around. norra or vegas to reno with an IT490! so these were the WRs of their day, with higher gearing and bigger tanks. is there a difference in suspension between the IT and YZ? i see 490s for sale all the time in my area and the occasional IT490 for pretty cheap. so i think it would be a cool vintage desert racer. lets say i find a clean YZ, can i swap an IT transmission straight over? ive seen some info on the internet stating the IT was rated somewhere in the 35-40hp range and the YZ was in the 47-55 hp range. is there really that much of a difference in the motors?
    #82
  3. zaptoad

    zaptoad just a guy

    Joined:
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    These big bore air head smokers are a dying breed, so I started looking for them. Found one for $500 that actually ran. Pilot was plugged so it wouldn't idle. No big, just needs a carb cleaning. I am hoping to plate it and use it as a gravel road machine. I have considered swapping chassis or just front ends in search of better brakes. At this point, I don't know what all the options are.

    One of the best bikes I ever had was an IT200, trophied first time out with it. Got to ride many of my friends IT's, 175, 250, 400, 425, 465, and 490....even an WR500. I just hate to see this thread die.

    Breath, breath.........


    We can do this! :ear
    #83
  4. FJ_Kevin

    FJ_Kevin Been here awhile

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    Before...

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    After,

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    Next project, a yz465,
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    #84
  5. zaptoad

    zaptoad just a guy

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    If you are running it on the street, just wondering what silencer/spark arrestor yoou are using. Mine came with a DG pipe and a stock arrestor hay wired on. Just what might take some of the bark out of it?
    #85
  6. Sniper X

    Sniper X De Oppresso Liber

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    I'd love to have one as I would plate it and ride it to and from work at least a couple days a week.
    #86
  7. FJ_Kevin

    FJ_Kevin Been here awhile

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    Zaptoad,

    Yes... I have a vintage tag on this bike and have it insured with Hagerty along with my vintage streetbikes.

    I am running a DG pipe as well. I bought a FMF universal silencer/spark arrestor. It came with a stinger pipe extension and a mounting tab.

    Here is a photo of a my setup as I am positioning things before I weld it. I first positioned the silencer where I wanted it to mount to the frame (using the supplied clamp and yamaha rubber mount). I then cut the stinger extention to the proper length. The stinger slides into the DG pipe. Instead of clamping it, I chose to weld it to reduce the posibility of leaks than can damage the plastic number panel. The silencer is then clamped to the other end of the extention.

    You can see how the mounting tab is also positioned on the extention in preperation of welding. Here too I used a yamaha rubber hanger bracket between the frame and the mounting tab.

    This setup works well. The mounting is solid and clean. The FMF silencer is just barely acceptable noise wise. I do wisk it was a little quieter though. I recently came across a pretty massive aluminum silencer/spark arrestor that some one told me was off a husky. Given its size I would think it would be quieter. I may give it a try some time in the future.

    The IT490 is a bit of a wild beast. I dont ride it on the street much as it wants to entice me into doing something that will get me arrested... hope the photos help.

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    #87
  8. fireflyr

    fireflyr Been here awhile

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    Had an IT465 in '86 before I went in the army. The only thing that has scared me more was watching the flight surgeon coming towards me putting on a rubber glove. Felt about the same after both incidents.:cry
    #88
  9. zaptoad

    zaptoad just a guy

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    North Idaho
    #89
  10. drivefastandswerve

    drivefastandswerve Indianapolis

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    Well, just purchased a 1980 Yamaha IT425 and it might need some "work". :1drink

    Everything is there, hopefully original bore, and shifting, brakes, throttle cable everything works. :clap

    Of course, it does not run, but, has spark. :lol3

    Will work the basics, change oil, WD-40 cables, clean carb, oil chain, etc... and see what happens! :evil

    Here she is, in all of her glory! :freaky

    Attached Files:

    #90
  11. Hot Stuff

    Hot Stuff Road Dragon

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    Great thread! Thanks for everyone's input. I never had a chance to ride a 465/490, but used to have an '86 IT 200 and had a lot of fun with it in the east Georgia woods.
    #91
  12. P 0 P E Y E

    P 0 P E Y E Bald rider

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    Great picks. Thanks for posting. I can remember when the it 490 was my dream bike.
    My buddy had the 250 or 200 and it was awesome for having a very wide radio user frendly gearbox and a predictable power band. A wheelie machine. Of course I only weighed a buck twenty at the time.
    #92
  13. drivefastandswerve

    drivefastandswerve Indianapolis

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    Hey gang.....I'm needing an oversize piston for an IT425, 1980. Yep, only made them for one year! :cry

    I would prefer the .50 over size from the original bore of 85mm.

    They made a .25, .50. .75 and a 1.00 oversize piston for that bike. :huh

    The rings, fit multiple bikes, but the pistons are 1980 IT425 specific.

    Please let me know!...........chuck :freaky
    #93
  14. jar944

    jar944 Been here awhile

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    a friend of mine C.1981


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    #94
  15. exoff-roadgoat

    exoff-roadgoat Will ride for food

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    :clapAwesome pics! Do I see a Sherpa T and a Husky WR in the background? My buds rode ITs. Good dependable bikes. If the right one came along I would be tempted.
    #95
  16. supervision

    supervision Been here awhile

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    One of my current bikes, is a 81, white IT125! I mostly ride my XR200R! just cause it's newer
    #96
  17. Tex_Aus

    Tex_Aus Been here awhile

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    Amen to that. Thanks for sharing jar944.

    Tex
    #97
  18. Harry94025

    Harry94025 Been here awhile

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    Hi Guys,

    Rode a friend's '77 IT400 last night, just a very short run down a dirt path.:D It brought back memories of my '75 DT250 which was modified to essentially the MX specification: alloy rims, Koni shocks, expansion chamber, etc..

    Got me thinking of getting one of these IT's for some two-stroke fun. Question - is it possible to get a licence plate on one of these for California?

    Thanks,
    Harry
    #98
  19. zaptoad

    zaptoad just a guy

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    I got them on my WR500 here in Idaho, but they are very lacks here! Lucky us! :D
    #99
  20. JR Greenhorn

    JR Greenhorn Been here awhile

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    Harry, while California is known to be the most draconian state on plated dirt bikes, my state is among the worst in our region. For me and friends of mine, we have had good luck buying bikes out of state that were already plated. I bought my KTM 440 EXC in Colorado, with Colorado plates on it. When I got it home, I brought the CO title into my local DMV, and made sure to always call it a "motorcycle" and never a "dirt bike." I made a separate trip back to get our state's required DNR sticker for off-road use of my "dirt bike."

    My cousin bought a much newer KTM that was already MN plated. He went into the same DMV office as me, used the "motorcycle" nomenclature strategy, and everything went fine. But then, he asked for the DNR sticker, and they got suspicious. He aborted, and returned another day for the sticker for his "dirt bike."

    I used to have a coworker who bought a bike here and "sold" it (on paper only) to a friend in CO, who plated it and "sold" it back, making a similar CO-to-MN title transfer easy for my coworker.



    Plating via CO is fairly common here in MN, because it's about the closest state to us that's easy to get the job done. Sounds like ID might be another option. I've read online of Californians keeping marginally street legal vehicles (such as dirt bikes or supermotos) registered and "paper-owned" in NV, but I've also read that CA has gotten wise to that in some cases.

    One thing that might make a difference is the format of the bike's VIN. I don't know the details myself, but I've heard that certain VIN formats are not accepted as street-legal VIN types. I suspect these old Yamahas might fall into that group, but I don't know for sure.




    This all sounds so sketchy and maybe outright deceptive, but what frustrates me about it all is that I want and need the plate to ride the mile or two down the minimum maintenance dirt forest road from the place where I'm legally obligated to camp in the state forest to the state OHM trail where I'm legally allowed to ride. I don't even want my non-DOT knobs to tread upon our state's asphalt roads, but yet the letter of the law requires the bike to be equipped and documented as if it was going to be ridden clear across our state on I-94.

    I've heard that there has been a change to these laws for dirt bikes in our state this year, making it easier to legally ride forest roads for the purpose of connecting trail routes, but I haven't heard the details yet. I'm trying to be cautiously optimistic while not expecting much, but most of all, I'm just glad that "I've got mine" when it comes to my street plate and tabs. [/rant]