Author Topic: YZ125 S Build thread.  (Read 8258 times)

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Offline rileyp

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YZ125 S Build thread.
« 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
I'll be back soon with a few more links in the next few days.
cheers Pete

« Last Edit: June 09, 2014, 12:31:29 PM by rileyp »

Offline rileyp

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Re: YZ125 S Build thread.
« Reply #1 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


« Last Edit: June 09, 2014, 12:31:00 PM by rileyp »

Offline Graeme M

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Re: YZ125 S Build thread.
« Reply #2 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.

Simo63

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Re: YZ125 S Build thread.
« Reply #3 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 :)

Offline Paul552

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Re: YZ125 S Build thread.
« Reply #4 on: April 11, 2014, 08:13:19 AM »
Wow man that looks like fun!

Keep them photos coming
'77 YZ125D '84 CR250RE '89 CR250RK '84 CR80RE  '09 YZ250F

Offline rileyp

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Re: YZ125 S Build thread.
« Reply #5 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





« Last Edit: June 09, 2014, 12:32:00 PM by rileyp »

Simo63

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Re: YZ125 S Build thread.
« Reply #6 on: April 11, 2014, 07:15:32 PM »
Thanks Graeme, Simo63 and Paul

Fixed for you :)

Offline rileyp

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Re: YZ125 S Build thread.
« Reply #7 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 :)

Offline Paul552

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Re: YZ125 S Build thread.
« Reply #8 on: April 11, 2014, 07:50:33 PM »
Man you are working quick!!!!!!!

The bottom end looks better than the top.

'77 YZ125D '84 CR250RE '89 CR250RK '84 CR80RE  '09 YZ250F

Offline KIWImxer

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Re: YZ125 S Build thread.
« Reply #9 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
Living in the past and have the trophies to prove it

Offline rileyp

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Re: YZ125 S Build thread.
« Reply #10 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

« Last Edit: June 09, 2014, 12:05:48 PM by rileyp »

Offline KIWImxer

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Re: YZ125 S Build thread.
« Reply #11 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 frameā€¦and maybe a box of engine bits! Hahaha
« Last Edit: April 11, 2014, 08:54:43 PM by KIWImxer »
Living in the past and have the trophies to prove it

Offline GMC

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Re: YZ125 S Build thread.
« Reply #12 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
G.M.C.  Bringing the past into the future

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Offline rileyp

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Re: YZ125 S Build thread.
« Reply #13 on: April 11, 2014, 08:58:52 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..

Offline Paul552

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Re: YZ125 S Build thread.
« Reply #14 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!!!!!!
« Last Edit: April 11, 2014, 09:16:38 PM by Paul552 »
'77 YZ125D '84 CR250RE '89 CR250RK '84 CR80RE  '09 YZ250F