What is this (vintage bike)

racer187x
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racer187x
Edited Date/Time 7/2/2017 5:01pm
YZ 490 craigslist ad LINKY

I'm having trouble ID-ing this bike. Looks like WR 500 rear plastic and front end. Exhaust looks odd for a 490 as well.

Any ideas?




EDIT: prolly should've put this in Old School
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SmokinJoe439 7/2/2017 10:51am
7/2/2017 10:51am Edited Date/Time 7/2/2017 10:54am
Death trap on wheels it's a 86-87 yz 250 chassis with a yz 490 engine a late 80's front end with a current generation yz 250 pipe and 91 92 rear plastics some other bits.
Harry Backmon 7/2/2017 10:55am
7/2/2017 10:55am
At first I was inclined to disagree with SmokinBro, but now I think he's really close to the truth.
Harry Backmon 7/2/2017 11:02am
7/2/2017 11:02am
SmokinBro, I think that is a 490 pipe. The way it curls out and up on the port side makes me think that. However, very good diagnosis by you. I think you're pretty close.
Harry Backmon 7/2/2017 11:03am
7/2/2017 11:03am
Oh, almost forgot...I had an 89 YZ250. It didn't look anything like that - nor did the 490. Come to think of it, I'm not even sure they made a 490 in 1989.

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omalley
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omalley 7/2/2017 11:51am
7/2/2017 11:51am
They made one in 90, so I'm guessing they did in 89. In 91 or 92 they added the newer YZ250-type plastic, changed the engine to silver, added USD forks and called it a WR500.

I love the "needs carb work." In CL terms that means:
-10psi compression
-Fouling plugs due to sucking gearbox dry from failed right side crank seal, while simultaneously detonating itself to death due to sucking air through failed left side crank seal
-an air filter covered in 1/2" of crust, which crumbles like birthday cake when you try to clean it...
-etc
Ted722
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Ted722 7/2/2017 11:51am
7/2/2017 11:51am
Could it be an '89 YZ490 with 86-87 tank/shroud? Where's the shock reservoir?




Here's an '89 490. I think that was their last year before the WR took it's place.




motosurf
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motosurf 7/2/2017 12:40pm
7/2/2017 12:40pm
omalley wrote:
They made one in 90, so I'm guessing they did in 89. In 91 or 92 they added the newer YZ250-type plastic, changed the engine to...
They made one in 90, so I'm guessing they did in 89. In 91 or 92 they added the newer YZ250-type plastic, changed the engine to silver, added USD forks and called it a WR500.

I love the "needs carb work." In CL terms that means:
-10psi compression
-Fouling plugs due to sucking gearbox dry from failed right side crank seal, while simultaneously detonating itself to death due to sucking air through failed left side crank seal
-an air filter covered in 1/2" of crust, which crumbles like birthday cake when you try to clean it...
-etc
How do you know that?? Maybe it really does just need carb work.
RbR
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RbR 7/2/2017 2:06pm
7/2/2017 2:06pm
CR500 Pipe, 86 tank and shrouds, 92 number plates/ front & rear fenders?
pete24
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pete24 7/2/2017 2:10pm
7/2/2017 2:10pm
RbR wrote:
CR500 Pipe, 86 tank and shrouds, 92 number plates/ front & rear fenders?
id say your rite and id bet the 91-92 yz forks came from the carcass the rear fender and plates were on
DavetheVintageGuy 7/2/2017 3:20pm
7/2/2017 3:20pm
This looks like a bike that East Coast Vintage would be proud to sell as a "one of a kind". It just needs the tires shined up and spokes painted to be perfect for them.
ledger
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ledger 7/2/2017 4:02pm
7/2/2017 4:02pm
DavetheVintageGuy wrote:
This looks like a bike that East Coast Vintage would be proud to sell as a "one of a kind". It just needs the tires shined...
This looks like a bike that East Coast Vintage would be proud to sell as a "one of a kind". It just needs the tires shined up and spokes painted to be perfect for them.
Lol, you hit the nail on the head about ECV. So very true.
pete24
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pete24 7/2/2017 5:00pm
7/2/2017 5:00pm
is way to good to be from, east coast rubbish
burn1986
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burn1986 7/2/2017 5:50pm
7/2/2017 5:50pm
Probably a legit 490 frame with all the other stuff added. You would think for all that work, he would've put a disc brake on the back.
JW381
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JW381 7/2/2017 6:37pm
7/2/2017 6:37pm
Well, FWIW, it looks kinda cool.
JustMX
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JustMX 7/2/2017 7:03pm
7/2/2017 7:03pm
Are the cylinder fins machined down to allow the tank to clear them?
burn1986
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burn1986 7/2/2017 8:17pm
7/2/2017 8:17pm
JW381 wrote:
Well, FWIW, it looks kinda cool.
Yep, I'd ride it Cool
Dirty Points 7/2/2017 8:37pm
7/2/2017 8:37pm Edited Date/Time 7/2/2017 8:38pm
JustMX wrote:
Are the cylinder fins machined down to allow the tank to clear them?
More like sloppy angle-grinder job (enlarge for detail).

Pit Row

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wildbill
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wildbill 7/2/2017 10:40pm
7/2/2017 10:40pm
Careful! Those pigs will 5th gear swap you into oblivion.
Deja New
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Deja New 7/3/2017 3:49am
7/3/2017 3:49am
Ted722 wrote:
Could it be an '89 YZ490 with 86-87 tank/shroud? Where's the shock reservoir? [img]https://p.vitalmx.com/photos/forums/2017/07/02/203046/s1200_00H0H_jojru8RQLxr_1200x900.jpg[/img] Here's an '89 490. I think that was their last year before...
Could it be an '89 YZ490 with 86-87 tank/shroud? Where's the shock reservoir?




Here's an '89 490. I think that was their last year before the WR took it's place.




86 250S as hear in Aus the 87 250T had white shrouds not red. Might have been different in the US.

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