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Your Collection: 1983 Yamaha IT 490

Sunday, December 18, 2011 | 12:40 PM

This weeks collection comes to us from Jason Behunin.

Hi, my name is Jason and I like to buy old bikes and fix them up. After I finish, I usually sell the bikes, and start all over. Here is a before and after pictures of a bike I recently completed. This bike was a nightmare to rebuild. The motor parts were easy to acquire, but trying to find brand new plastic was hard! This project took me nearly 3 months to complete.

1983 Yamaha IT 490
I bought this bike for $100. My Dad had one when I was growing up, and I thought it would be a fun project. I stripped the entire bike to the frame and completely rebuilt everything from the ground up.

The motor worked, but there was a hole in the case about the size of a dime. The motor was torn down and completely rebuilt. All the bearings and seals were replaced. The clutch basket was cracked and the plates were trashed. I have a friend that owns a cycle repair shop that happened to have a 1984 YZ 490. I was able to acquire the cases and clutch components from that YZ 490. The cylinder wasn't too bad, but a fresh piston and a new bore made it look like new. The hubs and rims were good, but the spokes were all seized. The spokes were cut off and all replaced with new ones. Luckily the frame was straight. I sand blasted the frame and powder coated it to the OEM black. During the building process, all new fasteners were used. All new cables, levers and throttle were put on as well. All new plastics and seat cover were put on to finish the look. The bike looks great and runs like brand new.

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The Conversation

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tonewall wrote: 1:03pm December 18, 2011

nice job...looks good.

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Texasthierry wrote: 4:06pm December 18, 2011

Great job !
I raced my first supermoto with it in 88...the challenge was to start it with my 120 lbs ! I end up loosing the rear in the dirt section and got a broken pinky ! Thanks for the memory !

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Metta wrote: 4:58pm December 18, 2011

Remember that bike well, my Dad had one after he sold his '77 TT 500. Nice to see it again...

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rulingtheroost wrote: 8:34pm December 18, 2011

I had an 83' also rode a lot up in victorville good bike btw his grapics are from an 84' ..lol

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joemotocross589 wrote: 8:53pm December 18, 2011

Nice job, I never owned one, but ya always seen at least 1 running around the MX track w/ tool kit flappin, usually a broken fender heheh and the dude w/ no visor and a beard ridin it. ;)

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Lifesarutt64 wrote: 5:58am December 23, 2011

I had one of these beasts about 27 years ago. The first day I got my motorcycle licence I flipped it doing a 4th gear wheelie. I ended up in hospital for about a week with a shatted knee, so I did cringe when I first saw the pic of your IT490. Mine must have been an earlier model because it had a drum brake on the front but was otherwise the same. Used to blow out the soles of my boots starting it. Nice job on the rebuild

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simplewon wrote: 10:30pm March 11, 2012

Is this bike still for sale, i had a 79 it 175 then a 81 yz 465. tried to buy the it 490 but missed it years ago. let me know. simplewon @ yaho

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