OzVMX Forum
Marque Remarks => Yamaha => Topic started by: Woody on January 04, 2013, 10:03:23 am
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Guys,
I'm on the look out for set of forks for my 250H. I actually only need one inner tube but was wondering how you would actually tell the diff between IT and YZ 250/465 (and other models with 43mm and angled brake lug) complete forks of the same era.
I want to make sure that I get the right set.
cheers
Woody
0405417175
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Woody, why are you looking for it, pitted or bent tube?
Chris
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Any Yamaha 43mm forks with angled lug will be right. IT's had 38mm. Later model had 90 degree lug and axle mounts are embossed on.
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as said, the 81-82 IT 250's and 465's had 38mm forks. you'll need to find a 1981 YZ250-465 H fork sanction to get a 43mm angled brake stay.
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woody, I got a set of nos inner tubes for $300 from the states, yourtrashmytreasure US ebay. craig.
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I'm a bit rusty on this, but IIRC: only YZ250/465H had the particular combination of 43mm tubes, angled lug and full diameter tubes between the triple clamps.
The YZ125L upper tubes are machined down (waisted) between the triples.
The later, linkage-rear YZs and ITs all have the horizontal lug.
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Here you go Woody. You can even buy one at a time. As cheap as getting them rechromed 8) 8)
Send him a message and he might review the postage cost. I have dealt with him many times and had no problems.
http://www.ebay.com/itm/NOS-Yamaha-Inner-Fork-Tube-1-1981-1982-YZ250-YZ465-YZ490-4V4-23110-L0-/360534985642?pt=Motorcycles_Parts_Accessories&hash=item53f18f4baa&vxp=mtr#ht_514wt_1161
YZ250J and 490J also apparently the same :-\
Search yz 465 tubes on ebay.com
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all good info, thanks guys. One of the inners has a decent deep long scratch in it right above the seal area. I don't want to spend a bomb on this bike so will try to get a used fork first.
cheers
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so you can use the chrome off a yz250j but not the forks cause it has a angled lug on brake stay
for a evo bike ??? ???
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Part # = 4V4-23110-L0-00
Part Description = INNER TUBE COMPLETE 1
Model Count = 4
YZ250H 1981 250 YZ250 Competition Motocross
YZ250J 1982 250 YZ250 Competition Motocross
YZ465H 1981 465 YZ465 Competition Motocross
YZ490J 1982 490 YZ490 Motocross Motocross
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so you can use the chrome off a yz250j but not the forks cause it has a angled lug on brake stay
for a evo bike ??? ???
I'd say that about half the Evo Yamahas run the horizontal brake lug forks/brake. Never heard of it being an issue, but Woody is a real Boy Scout... :)
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I have a nice TLS brake with angled lug and don't want to waste it ;D
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I'd say that about half the Evo Yamahas run the horizontal brake lug forks/brake. Never heard of it being an issue,
It'll be an issue if you turn up to The Nats on your EVO bike with J or later YZ forks...... ;)
(Your original YZ h forks are probably sitting on some heavy four-stroke monstrosity in someones pool room being "oooed" and "aghhhed" at by people who haven't got a clue..... ::))
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:D
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(Your original YZ h forks are probably sitting on some heavy four-stroke monstrosity in someones pool room being "oooed" and "aghhhed" at by people who haven't got a clue..... ::))
more likely they're in some guys shed.... in a pile with another 10 sets 'just in case' his gets damaged... even though he's probably using a straight lug J set... or converted to discs... :-\
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I have both types , the horizontal brake lug type which is off an 83 it has inner tubes that are slightly shorter than the H ones
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Can anyone id the fork on the left? It is 43mm, angled brake lug and has a ridge along the front from the axle where as the one from my 250H on the right has a smooth front.
cheers
(http://i380.photobucket.com/albums/oo249/vmxwoody/YZ250H/Image003_zps5deffd43-1_zpsd82ac3aa.jpg)
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I found a set that were similar. They were from a YZ 125 K.
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that fork leg on the left could be of a 1984 IT200 L, i think they're 43mm with a 1 o'clock brake stay.... but they're also Z spoke discs i think?
does it have a threaded axle tube like a YZ or does it need an axle nut like an IT ?
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my 465 forks have had that rib removed before polishing by previous owner ,i got a 250 h recantly and at first i thought it had the wrong forks because it still had the rib on, if the bolt and the bottom of fork look the same then its probably what has happened to yours ,is the brake cable mount the same as from picture it is hard to tell
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mmm, I'm still curious about the ribbed fork legs as all the 250/465H pics I've come across so far have smooth lowers. Except Arn says that his 250H forks have the ribbed lowers.
Zakk, I have a set of 84 IT200 forks and they are a bit shorter, especially below the axle.
Mont, I think the 83 125K would have 38mm forks.
The ribbed fork in the pic might have the right sized tube that I need, I wanted to be sure before buying it and pulling it apart. Otherwise I'm on the hunt for a set of 250/465H or 125L forks.
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Just going on memory alone :P could the rib/lefty be off a RM465 X,Z?
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i recon you'll find the YZ125L forks are also 38mm (from memory).
i don't have a set of IT200L forks but i was suprised to see they still used the 1 o'clock brake stay rather than the 3 o'clock position stay as the IT K's used. but then nothing Yamaha used suprises me anymore :D
when i fitted 43mm IT250K forks on my IT250J (38mm forks), i found the overall length to be the same BUT the 43mm forks had shorter steel tubes and longer alloy sanctions. the overall ride hight was the same as the forktubes are level with the top clamp on the 43mm forks while thay poke 65mm through the top triple clamp on the 38mm J model.
(http://i210.photobucket.com/albums/bb143/Yokkachi/Zorak-Kowalski-10_zpsf3e9fc13.jpg)
i have both 43mm YZ250K and 43mm IT250K forks and they're identical in length in both tubes and alloy sanctions. only difference is the 43mm IT forks have a single pinch bolt on the right side (the YZ has 2 bolts) and the IT forks use a axle nut while the YZ has a threaded tube, plus the YZ K forks have a plastic protection sleave over the lower leg below the axle, neither the IT K or the YZ J had this. also the internals are the same and the springs interchange.
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My 465H has ribs on its 43mm forks, 45deg lug as well
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My 465H has ribs on its 43mm forks, 45deg lug as well
and does it also have 2x axle clamp bolts?
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So Woody, Are you confused yet?
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My 465H has ribs on its 43mm forks, 45deg lug as well
and does it also have 2x axle clamp bolts?
2 clamping bolts on the right side & threaded slider for axle on brake plate side
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The above is the same as on my 250 H and it has the originals on it.
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My 465H has ribs on its 43mm forks, 45deg lug as well
and does it also have 2x axle clamp bolts?
2 clamping bolts on the right side & threaded slider for axle on brake plate side
looks like they were a generic kayaba fork (hey hows that parts swap over list going ?)
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It was only the "LOW" numbered H's that had the non or smooth ribbed forks.
I have 2 x 250H's here & a 465H. The 465's frame & engine # are 5541 it has the ribbed fork legs.
The 250's bikes frame#'s as follows #1587 smooth legs & the other #5565 ribbed.
I have talked about this before with a mate, he remembers them as smooth when they first came out (like the 38mm G model SMOOTH legs) then they must of changed the tooling for some reason (maybe for added strength) who knows.
Cheers
Ando
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thanks Ando. so there you go, who'd figure that they'd change the fork legs mid season ???
but then again, nothing surprises me these days with these old bikes :o
I'm on the look out for any 250/465H & 250G parts
cheers
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Just to be clear, these are the sizes I the leading axle, drum brake Yamaha forks:
DT175N+ = 35mm forks.
XT250K = 35mm forks.
YZ125D, E, F = 36mm forks.
IT125 = 36mm forks.
IT175D, E, F, G, H = 36mm forks.
YZ125G, H, J, K = 38mm forks.
YZ250+ D, E, F, G = 38mm forks.
IT175J, K = 38mm forks.
IT250/465 H, J = 38mm forks.
YZ125L = 43mm forks.
YZ250/465/490 H, J, K, L = 43mm forks.
IT200L, N = 43mm forks.
IT250/490 K, L, N = 43mm forks.
TT600 K, L = 43mm forks.
I can't remember when the IT250/400/425 and YZ100 each went to 38mm forks, so there's gaps there...
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Just to be clear, these are the sizes I the leading axle, drum brake Yamaha forks:
DT175N+ = 35mm forks.
XT250K = 35mm forks.
YZ125D, E, F = 36mm forks.
IT125 = 36mm forks.
IT175D, E, F, G, H = 36mm forks.
YZ125G, H, J, K = 38mm forks.
YZ250+ D, E, F, G = 38mm forks.
IT175J, K = 38mm forks.
IT250/465 H, J = 38mm forks.
YZ125L = 43mm forks.
YZ250/465/490 H, J, K, L = 43mm forks.
IT200L, N = 43mm forks.
IT250/490 K, L, N = 43mm forks.
TT600 K, L = 43mm forks.
I can't remember when the IT250/400/425 and YZ100 each went to 38mm forks, so there's gaps there...
you sure the YZ125 L has 43mm forks? i had a look at the seals and they're the same as the 125K,L and N.
i thought the YZ125 didn't go 43mm until the 1986 S model?
plus a few of your list contain brake stays at 3 o'clock rather than 1 o'clock
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YZ125L has 43mm forks, no question.
I deliberately didn't touch the angled vs horizontal brake stay, fork length, fork travel, webbed vs smooth, single bolt vs dual bolt vs four bolt axle clamp, or external adjustment vs no external adjustment stuff.
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YZ125K was the last YZ125 to come with 38 mm forks.
Wonder how much more there is in this thread!
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YZ125K was the last YZ125 to come with 38 mm forks.
Wonder how much more there is in this thread!
could be done now.... :D
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I deliberately didn't touch the angled vs horizontal brake stay, fork length, fork travel, webbed vs smooth, single bolt vs dual bolt vs four bolt axle clamp, or external adjustment vs no external adjustment stuff.
Chicken ;D ;D
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Well... Yes!
:)