Old YZ eng parts?

[RedmistNZ]

Hey all - dug my old YTZ (tri-zinger) out of it's cave. Been there since early 90's!  

Can ya still get engine parts for these, looking for a couple of websites?  

gonna try to get it fired up again,

thanks for any info.

 

 

[DroppinDeuces]

Found this, Never tried em, cant vouch for em, but its someplace to start.   https://www.partspitstop.com/yamaha-atv-parts?gclid=EAIaIQobChMIiNK3rZ7y5AIVC9NkCh3FFA-gEAEYASAAEgK9x_D_BwE                              P.S. Damn three wheelers are dangerous! 

[S.O.A.N.Z]

what engine parts ?

[RedmistNZ]

2 hours ago, S.O.A.N.Z said:

what engine parts ?

Needs main seal  (reason it was parked up) so a seal kit to start with. Top end was fresh , but will pull jug and have a look......... top gasket set.

Poured oil down plug - It turns over ok . Headset bearings gone , mabey local bearing shop? 

Rear brake caliper incomplete, front master cylinder seized

Greg Brink owned this - was well maintained, think i'm 3rd owner .

Cleaned it up today , plastics and rubber bits still in good condition. 

everything is still there including Haynes Manual ?

any suggestions appreciated.

 

[6bt]

Start with an OEM parts fiche. Seals and bearings are probably still available.

[mbrick]

Yes, check out the OEM fiche on Rocky mountain and make a list of what is and isn't avail

You can probably buy a used front MC from almost any bike if rebuilds aren't avail, but try and get close on the listing size by some google searching.

They should also have aftermarket headstay bearings.

Edited September 28, 2019 by mbrick

[S.O.A.N.Z]

Gasket sets on ebay

Partzilla still has some gaskets / seals / bearings available

https://www.partzilla.com/catalog/yamaha/atv/1986/tri-z-ytz250s

The TRZ uses the same caliper front and back - some used one on ebay

These are the same

This Yamaha 34X-2580T-00-00 CALIPER ASSEMBLY fits the following models and components:

Yamaha Motorcycle 1985 XT350N Front Brake-Caliper

Yamaha Motorcycle 1992 SEROW - XT225D Front Brake-Caliper

Yamaha Motorcycle 1992 SEROW - XT225DC Front Brake-Caliper

Yamaha Motorcycle 1985 XT350NC (CA ED.) Front Brake-Caliper

Yamaha ATV 1986 TRI-Z - YTZ250S Front Brake-Caliper

Yamaha ATV 1985 TRI-Z - YTZ250N Front Brake-Caliper

Yamaha ATV 1985 TRI-Z - YTZ250N Rear Brake Caliper

Yamaha ATV 1986 TRI-Z - YTZ250S Rear Brake Caliper

Is yours 85 or 86 ?

 

 

[onoffroad]

Common items usually can be found. Possibly rings or pistons and a clutch. If it is common to the masses, you are in luck.

Edited September 29, 2019 by onoffroad

[RedmistNZ]

15 hours ago, S.O.A.N.Z said:

Gasket sets on ebay

Partzilla still has some gaskets / seals / bearings available

https://www.partzilla.com/catalog/yamaha/atv/1986/tri-z-ytz250s

The TRZ uses the same caliper front and back - some used one on ebay

These are the same

This Yamaha 34X-2580T-00-00 CALIPER ASSEMBLY fits the following models and components:

Yamaha Motorcycle 1985 XT350N Front Brake-Caliper

Yamaha Motorcycle 1992 SEROW - XT225D Front Brake-Caliper

Yamaha Motorcycle 1992 SEROW - XT225DC Front Brake-Caliper

Yamaha Motorcycle 1985 XT350NC (CA ED.) Front Brake-Caliper

Yamaha ATV 1986 TRI-Z - YTZ250S Front Brake-Caliper

Yamaha ATV 1985 TRI-Z - YTZ250N Front Brake-Caliper

Yamaha ATV 1985 TRI-Z - YTZ250N Rear Brake Caliper

Yamaha ATV 1986 TRI-Z - YTZ250S Rear Brake Caliper

Is yours 85 or 86 ?

 

 

Will check chassis numbers and post asap. Thanks for info - Out riding old klx yesterday...still muddy as over here.

[RedmistNZ]

Update on the Tri-Zinger___ got frame and eng numbers, not sure what year .... any ideas anyone?

 

Thanks for the website info - checked all sites mentioned , there is still a lot of parts-OEM and aftermarket available for older YZ's ?

Pulled the jug and inside was mint. Nice cross hatching on the bore (10hr max running)

found the expected oil residue on flywheel due to blown seal , taking eng out to engineer riding buddy to check bearing play..... crank looked good no heat marks or corrosion. 

Noticed a broken bolt for front sprocket cover , will extract using proper method (not Dewalt in shed)

will do all oil seals at same time.

Reeds and cage looked healthy - no chips or cracks/ 2hrs of work on front brakes got them freed-up, found jelly in master cylinder lol,  need new pads.... Fr disk all good.

Attached in next post is a pic of the job-sheet from the bike shop who sorted rebore in 1990. I taped it inside the manual for future reference......

I was an apprentice back then, $350 was a weeks wages......ouch!

Jobsheet says 1985 for engine not sure bout frame? 

 

 

 

Edited October 3, 2019 by RedmistNZ

[RedmistNZ]

 

[RedmistNZ]

The port coming from reed intake block is for the energy induction canister I think - fuel tank is under seat so vac fuel pump prevents starvation.

Effortless 5th gear wheelstands on these machines .......aaahh the good old days, looking forward to goin nuts on this thing again   

Edited October 4, 2019 by RedmistNZ
wrong info

[onoffroad]

Now you can get a knock-off piston kit for $20 delivered. Back then nothing was ever available as a kit. Sometimes you would have to buy rings or cir-clips one at a time. A rear sprocket under $60 was a DEAL. I guess labor was always included.

Edited October 3, 2019 by onoffroad

[RedmistNZ]

11 hours ago, onoffroad said:

Now you can get a knock-off piston kit for $20 delivered. Back then nothing was ever available as a kit. Sometimes you would have to buy rings or cir-clips one at a time. A rear sprocket under $60 was a DEAL. I guess labor was always included.

yea - ebay rocks! full gasket kit incl oil seals for $86 NZD.  3-4wk delivery to down under ?

got time to go over rest of machine ready for re-assembly

[S.O.A.N.Z]

says 85 model on the invoice