Author Topic: YZ250 & 360a  (Read 6117 times)

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Offline Ktm181

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YZ250 & 360a
« on: August 21, 2010, 08:19:52 pm »

g'DAY Gents,

a question if i may, engine and gearbox parts still available for these?  Gears ? big ends and main bearings? etc etc  How fragile are these bikes?

thanks for your help, I am just having a look at one.

Kt

Offline Nathan S

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Re: YZ250 & 360a
« Reply #1 on: August 21, 2010, 08:45:11 pm »
The engines are based on the DT1/RT1 motors, although a lot of stuff is actually different.

This means that they're tough and you can substitute trailbike bits in if the genuine YZ parts aren't available.
Main bearings & seals are generic parts that are available at any bearing shop.

Don't know about the gears.
The good thing about telling the truth is that you don't have to remember what you said.

mx250

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Re: YZ250 & 360a
« Reply #2 on: August 21, 2010, 08:51:50 pm »

g'DAY Gents,

a question if i may, engine and gearbox parts still available for these?  Gears ? big ends and main bearings? etc etc  How fragile are these bikes?

thanks for your help, I am just having a look at one.

Kt
What are you hesitating for? ::) :o Go for it. You won't be disappointed from the ride or collectability POV. ;) 8)

Offline Davey Crocket

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Re: YZ250 & 360a
« Reply #3 on: August 21, 2010, 09:05:39 pm »
All YZA only parts are very expensive....and not that common.....most people that have them hoard the parts....awesome bikes though...make sure bikes are near complete.....gearbox parts are hard to get and expensive.....worth the effort....go for it......get em back on the track.
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Offline Ktm181

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Re: YZ250 & 360a
« Reply #4 on: August 21, 2010, 10:19:37 pm »


thanks for the replies and info men.  Its a lifeling ambition to own and ride one, I did race a YZA when they were new, but, AN 80CC ONE!  Just love the look and i loved what they did on the track back then.  What sort of $$ should a good 250 be? I know its had a some cosmetic work done, not sure about the engine which is the reason for the questions.

thanks again,
Kt.

Offline Davey Crocket

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Re: YZ250 & 360a
« Reply #5 on: August 22, 2010, 09:04:54 pm »
Between 5 and 10 grand.
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Offline Ktm181

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Re: YZ250 & 360a
« Reply #6 on: August 22, 2010, 10:06:47 pm »
thanks for the reply Davey, shall see how i go.

cheers,
Kt

Offline Freakshow

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Re: YZ250 & 360a
« Reply #7 on: August 22, 2010, 11:36:40 pm »
Davey is a hoarder..................
74 Yamaha YZ's - 75 Yamaha YZ's
74 Yamaha  flattracker's
70  Jawa 2 valve speedway's

For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

Offline Davey Crocket

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Re: YZ250 & 360a
« Reply #8 on: August 23, 2010, 07:15:27 am »
Good on ya Freaky.......thats the pot calling the keetle black isnt it?
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Offline Freakshow

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Re: YZ250 & 360a
« Reply #9 on: August 23, 2010, 11:16:33 am »
is a keetle like a beetle ?

if so your right,  i like it on my back.
74 Yamaha YZ's - 75 Yamaha YZ's
74 Yamaha  flattracker's
70  Jawa 2 valve speedway's

For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

Offline Lozza

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Re: YZ250 & 360a
« Reply #10 on: August 23, 2010, 01:43:28 pm »
These days brand new gears/shafts can be easily made.
Jesus only loves two strokes

Offline Freakshow

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Re: YZ250 & 360a
« Reply #11 on: August 23, 2010, 03:38:54 pm »
thats not what you said last year Lozza. 

I still have that mx 250a gear cluster here with the dogged out 3rd sitting here,  at the end of the day the cutting and retreating was too hard or too dear compared to the price of just buying the NOS one.

One off machining seems to be too pricey, unless its for some works resto... or a lot of them
74 Yamaha YZ's - 75 Yamaha YZ's
74 Yamaha  flattracker's
70  Jawa 2 valve speedway's

For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

Offline Freakshow

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Re: YZ250 & 360a
« Reply #12 on: August 23, 2010, 03:44:14 pm »
Main bearings & seals are generic parts that are available at any bearing shop.

Some not all....  transmission shaft needle bearing is like rocking horse and the 24mm main bearing on the Dt1 are near extinct or bloody expensive and the Bearing places cant find any replacement maker so you have to figure out how to get into the 25mm pins.
74 Yamaha YZ's - 75 Yamaha YZ's
74 Yamaha  flattracker's
70  Jawa 2 valve speedway's

For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

Offline Lozza

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Re: YZ250 & 360a
« Reply #13 on: August 23, 2010, 04:41:51 pm »
thats not what you said last year Lozza. 

I still have that mx 250a gear cluster here with the dogged out 3rd sitting here,  at the end of the day the cutting and retreating was too hard or too dear compared to the price of just buying the NOS one.

One off machining seems to be too pricey, unless its for some works resto... or a lot of them

Your memory must be failing you Freaky, I said it was far to hard for me to do. Very easy for the gearcutter he advertises in AMCN he under cuts dogs for $80, at the time this service was not available.
Jesus only loves two strokes

Offline Freakshow

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Re: YZ250 & 360a
« Reply #14 on: August 23, 2010, 05:02:38 pm »
then you have to get them rehardned do you not so then add more coin to the $80.

Last yamaha 3rd i bougth was $65.

Maybe things have changed and its now easier, but still not cheap.
74 Yamaha YZ's - 75 Yamaha YZ's
74 Yamaha  flattracker's
70  Jawa 2 valve speedway's

For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff