OzVMX Forum

Marque Remarks => Yamaha => Topic started by: rileyp on April 09, 2014, 11:36:02 pm

Title: YZ125 S Build thread.
Post by: rileyp on April 09, 2014, 11:36:02 pm

I bought my yz about a month ago and have been taking a few pics and making a few notes along the way with a little app that uploads it straight to the web.
Here's the first five parts for everyone to have a looksy at my progress...
Full details and more pics here
http://www.evernote.com/shard/s346/sh/aa9f91ce-6abe-4bea-b4a2-ffef0e569194/e99d6ffab7cf0726435a949e55e2ffc1 (http://www.evernote.com/shard/s346/sh/aa9f91ce-6abe-4bea-b4a2-ffef0e569194/e99d6ffab7cf0726435a949e55e2ffc1)
I'll be back soon with a few more links in the next few days.
cheers Pete
(http://i113.photobucket.com/albums/n227/Peter_Vanderveen/yz125/iphone2764Medium_zpsd5058c64.jpg) (http://s113.photobucket.com/user/Peter_Vanderveen/media/yz125/iphone2764Medium_zpsd5058c64.jpg.html)

Title: Re: YZ125 S Build thread.
Post by: rileyp on April 11, 2014, 12:01:20 am

Part 6 Radiators off
Part 7 Getting serious now
Part 8 Piston Removal
Part 9 Flywheel removal
Part 10 The source of all evil...
Full details and more pics here
http://www.evernote.com/shard/s346/sh/4431ab6f-cba2-4969-9d32-cb88cf0bf3ae/9883f6377980130573b0abe1d7ec68b3
 (http://www.evernote.com/shard/s346/sh/4431ab6f-cba2-4969-9d32-cb88cf0bf3ae/9883f6377980130573b0abe1d7ec68b3)

(http://i113.photobucket.com/albums/n227/Peter_Vanderveen/yz125/Barrell/iphone2828Medium_zpsf0e0d8e9.jpg) (http://s113.photobucket.com/user/Peter_Vanderveen/media/yz125/Barrell/iphone2828Medium_zpsf0e0d8e9.jpg.html)

Title: Re: YZ125 S Build thread.
Post by: Graeme M on April 11, 2014, 06:21:13 am

Wow... Two things. Some people should never be allowed to have a dirtbike, that's the worst mess Ive ever seen. And... you are way braver than me, I'd have given up after I got the head off.

Title: Re: YZ125 S Build thread.
Post by: Simo63 on April 11, 2014, 07:36:29 am

And 3, you take a lot of pictures ..... but it's a good read though, please keep it up :)

Title: Re: YZ125 S Build thread.
Post by: Paul552 on April 11, 2014, 08:13:19 am

Wow man that looks like fun!

Keep them photos coming

Title: Re: YZ125 S Build thread.
Post by: rileyp on April 11, 2014, 07:11:37 pm

Thanks Graeme and Paul
Here's  some more joy.... :-\
Part
11 Pinion
12 Crankcase bolts and splitting
13 Cleaning threads
14 Clutch case
15 Snapped bolts on forks
Full details and more pics here
http://www.evernote.com/shard/s346/sh/473bfd60-aba6-49b5-beef-ca26bd522860/4a6719f247f1bdc83b32974fb91505b7 (http://www.evernote.com/shard/s346/sh/473bfd60-aba6-49b5-beef-ca26bd522860/4a6719f247f1bdc83b32974fb91505b7)

(http://i113.photobucket.com/albums/n227/Peter_Vanderveen/yz125/engine%20building/iphone2897_zps5459590c.jpg) (http://s113.photobucket.com/user/Peter_Vanderveen/media/yz125/engine%20building/iphone2897_zps5459590c.jpg.html)

Title: Re: YZ125 S Build thread.
Post by: Simo63 on April 11, 2014, 07:15:32 pm

Quote from: rileyp on April 11, 2014, 07:11:37 pm

Thanks Graeme, Simo63 and Paul

Fixed for you :)

Title: Re: YZ125 S Build thread.
Post by: rileyp on April 11, 2014, 07:40:48 pm

Sorry Simo63 my post was a hit with a number of people higher than I can count at any one time.
Special thanks to Simo63 :)

Title: Re: YZ125 S Build thread.
Post by: Paul552 on April 11, 2014, 07:50:33 pm

Man you are working quick!!!!!!!

The bottom end looks better than the top.

Title: Re: YZ125 S Build thread.
Post by: KIWImxer on April 11, 2014, 08:22:11 pm

Nice work mate. Mine was a rolling frame and very large box of bits. After rummaging through I think no:
- barrel
- kick starter
- Front disc caliper, line or reservoir
- gear shift
- levers, cables, throttle assy

Shock in at RAD Shocks, forks in at RAD Hard Chroming, Clamps going to Brisbanes Best Polishing.

Very bloody exciting...

Yours should be way ahead of mine!

LG

Title: Re: YZ125 S Build thread.
Post by: rileyp on April 11, 2014, 08:35:43 pm

Thanks Kiwi
I started about a month ago... I have all the pics up to where I'm at on the web already.  I'm just tidying up the text entries a little and posting the links :)

 I'm moving fast nowhere at the moment :)


Parts
16 radiator and side covers
17 Carby trouble...
18 Crankcase clean up
19 Crankcase reassembly
20 Top end
full details and more pics here
http://www.evernote.com/shard/s346/sh/bfa2047e-3513-44dd-9742-214dd3cc46c6/48c42a0f03cecf709701a82513158744 (http://www.evernote.com/shard/s346/sh/bfa2047e-3513-44dd-9742-214dd3cc46c6/48c42a0f03cecf709701a82513158744)

(http://i113.photobucket.com/albums/n227/Peter_Vanderveen/yz125/plastics/iphone3481_zpsd23ae494.jpg) (http://s113.photobucket.com/user/Peter_Vanderveen/media/yz125/plastics/iphone3481_zpsd23ae494.jpg.html)

Title: Re: YZ125 S Build thread.
Post by: KIWImxer on April 11, 2014, 08:44:20 pm

Lol. To be honest I've been sitting on a powder coated frame for at least 4 months! Only this week got the other gear to the recommended fellas up here. When I work out how to post the pics, I put up the photo of the frame…and maybe a box of engine bits! Hahaha

Title: Re: YZ125 S Build thread.
Post by: GMC on April 11, 2014, 08:56:25 pm

Good build detail, look forward to the rest.
I reckon the bottom end was lucky to stay submerged, it kept the oxygen away otherwise it would have been a real mess

Title: Re: YZ125 S Build thread.
Post by: rileyp on April 11, 2014, 08:58:52 pm

Quote from: Paul552 on April 11, 2014, 07:50:33 pm

Man you are working quick!!!!!!!

The bottom end looks better than the top.

Your not wrong. The gearbox looks very good.
The barrel is at 57.5mm and I recon if I bore it to 58mm its last bore size
only 0.22-.25  mm will come off each side so I don't think it will get all the corrosion out of it with the pitting quite bad in few spots (in the top 30 mm of the barrel of course)
I'm looking at other options. No point spending $100 on a rebore to be told sorry its beyond repair.
 I'm considering sleeving as I can get a LA sleeve for about $100 delivered I think. I have access to a 20 ton press at work and a mech engineer in charge who wants to fit out his workshop to fix bikes cause he loves em too:)
I think I'll watch a few vids :)
I'm looking at options at this moment in time.
Other options include buying a s/h one off ebay from the states etc..

Title: Re: YZ125 S Build thread.
Post by: Paul552 on April 11, 2014, 09:14:10 pm

I cannot work out why you are putting it back together without fixing every thing.
If it does not have spark that is a easy fix compared to pulling it down again.


I would fix everything and I would bet it will start as the electrics are simple.

When I did my cr125 I did everything and the only thing I missed was the fuel tap (full of old fuel like glue) after that it fired up 1st go (after being under water)

And ps Kurt cobain was the man!!!!!!

Title: Re: YZ125 S Build thread.
Post by: rileyp on April 11, 2014, 10:01:00 pm

Quote from: Paul552 on April 11, 2014, 09:14:10 pm

I cannot work out why you are putting it back together without fixing every thing....snip
And ps Kurt cobain was the man!!!!!!

I wanted to be certain as to what I need to replace.
I like pulling them apart :)
I have spark :)
I wont loose parts in my maze of a shed until I rebuild.
 Re Kirk ...Yeah he was great... best musical option of the provided avatars.

Title: Re: YZ125 S Build thread.
Post by: rileyp on April 11, 2014, 10:31:31 pm

Quote from: KIWImxer on April 11, 2014, 08:22:11 pm

After rummaging through I think no:
- barrel
- kick starter
- Front disc caliper, line or reservoir
- gear shift
- levers, cables, throttle assy
LG

This guy might have some bits for you.
https://www.facebook.com/groups/519557994742717/permalink/736071743091340/

Title: Re: YZ125 S Build thread.
Post by: rileyp on April 12, 2014, 01:35:38 am

Parts
21 shift spring and pinion back in
22  A few bits ordered.
23 Number plate bolt
24 Front and rear guard and Tank part1
full details here
http://www.evernote.com/shard/s346/sh/d18e450b-a61f-47fa-9829-332c07ceb9e2/6153f973b9883b8b4a21b02bd062396a (http://www.evernote.com/shard/s346/sh/d18e450b-a61f-47fa-9829-332c07ceb9e2/6153f973b9883b8b4a21b02bd062396a)
Initial tank scrape
(http://i113.photobucket.com/albums/n227/Peter_Vanderveen/yz125/plastics/iphone3237_zps1d00b0a5.jpg) (http://s113.photobucket.com/user/Peter_Vanderveen/media/yz125/plastics/iphone3237_zps1d00b0a5.jpg.html)
Tank improving
(http://i113.photobucket.com/albums/n227/Peter_Vanderveen/yz125/plastics/iphone3536_zps8c2889ca.jpg) (http://s113.photobucket.com/user/Peter_Vanderveen/media/yz125/plastics/iphone3536_zps8c2889ca.jpg.html)

Title: Re: YZ125 S Build thread.
Post by: KIWImxer on April 12, 2014, 06:44:33 am

Thanks!

I'm amazed how many new bits you can get for an old bike! I can buy almost everything brand new. 

Title: Re: YZ125 S Build thread.
Post by: rileyp on April 12, 2014, 12:37:52 pm

Quote from: KIWImxer on April 12, 2014, 06:44:33 am

Thanks!

I'm amazed how many new bits you can get for an old bike! I can buy almost everything brand new.

Yeah its nice when the parts are easy to get.
That might take some of the sport out of it for the guys doing the much older bikes?
Traversing the country to pick bits up would be  more and more dominant with the older bikes I would assume and part of the journey in restoring the bike.

Title: Re: YZ125 S Build thread.
Post by: rileyp on May 31, 2014, 02:40:37 pm

I had a go at repairing the seat base with a mate. :)
Full details and more pics here
http://www.evernote.com/shard/s346/sh/bbe723a1-3e23-4ba9-9c06-e0c2db492177/e082714436e4b7917dad7dfa14ee4750 (http://www.evernote.com/shard/s346/sh/bbe723a1-3e23-4ba9-9c06-e0c2db492177/e082714436e4b7917dad7dfa14ee4750)
(http://i113.photobucket.com/albums/n227/Peter_Vanderveen/yz125/seat/iphone3811_zps413dc6f1.jpg) (http://s113.photobucket.com/user/Peter_Vanderveen/media/yz125/seat/iphone3811_zps413dc6f1.jpg.html)

I've also ordered a  few more parts
Swingarm bushes
Throttle cable
Fork seals
Link kit
Reed kit
Engine Seal kit
Kick idle gear
Main bearings
I've cleaned up the plastics a bit more and had a good look at the frame now its all stripped down. It looks like its been welded up in the past... I'm thinking I will grind it back and neaten up the job as its a bit backyard.
I have more parts I need to order as well and I'm trying to finalize that one.
I'll have to pull down the forks and see if they need a bush kit as well. I'm thinking they will after seeing the poor condition of everything else.
(http://i113.photobucket.com/albums/n227/Peter_Vanderveen/yz125/seat/iphone3809_zpsf9e67a57.jpg) (http://s113.photobucket.com/user/Peter_Vanderveen/media/yz125/seat/iphone3809_zpsf9e67a57.jpg.html)

Title: Re: YZ125 S Build thread.
Post by: KIWImxer on June 02, 2014, 08:50:03 pm

Got some shiny white bits arrive…a bit premature I know, but why not…Looking pretty. Shock will be finished this week. Swing arm next week. Need to order the s/arm and linkage bearings/seals. Forks have issues with internals. Bolts all in getting stripped and re-zinc'd. Need to find a Brisbane engine guy to help out with the bottom end/gearbox.

Title: Re: YZ125 S Build thread.
Post by: rileyp on June 08, 2014, 01:05:51 pm

I pulled the rest of the bike down last week.
Full details and more pics here http://www.evernote.com/shard/s346/sh/4422692c-b687-43bc-94a4-7e9a433628ab/da25c1d28abd8d9a2452073afbab9a6e (http://www.evernote.com/shard/s346/sh/4422692c-b687-43bc-94a4-7e9a433628ab/da25c1d28abd8d9a2452073afbab9a6e)
(http://i113.photobucket.com/albums/n227/Peter_Vanderveen/yz125/part%2026%20final%20stripdown/iphone4273_zpsa0856658.jpg) (http://s113.photobucket.com/user/Peter_Vanderveen/media/yz125/part%2026%20final%20stripdown/iphone4273_zpsa0856658.jpg.html)

Title: Re: YZ125 S Build thread.
Post by: rileyp on June 08, 2014, 02:10:07 pm

I started sand blasting...
Full details and more pics here
https://www.evernote.com/shard/s346/sh/66291e1d-517c-4360-8a46-1925657c3c0c/7656f503ea0bafaec572d2cbf87dc025
I'm coming to terms with this frame this bike isn't going to be as good a restorer as I had hoped as it has a few small issues.
(http://i113.photobucket.com/albums/n227/Peter_Vanderveen/yz125/part%2027%20frame%20clean%20up/iphone4349_zpsea02cc21.jpg) (http://s113.photobucket.com/user/Peter_Vanderveen/media/yz125/part%2027%20frame%20clean%20up/iphone4349_zpsea02cc21.jpg.html)