1992 YZ250 lockdown-teardown- completed with start up video

sandman768
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sandman768 5/8/2020 1:30pm
5/8/2020 1:30pm
Picked up some new oem brake rotors from one of the YZ face book pages...also found a very nice oem rear sprocket..

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sandman768
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sandman768 5/8/2020 4:09pm
5/8/2020 4:09pm
gantry25 wrote:
Nice job on the plastic alignment! Sounds like you're happy with the Pivot Works stuff, no need to go OEM on bearing assemblies? Guess I'll go...
Nice job on the plastic alignment!

Sounds like you're happy with the Pivot Works stuff, no need to go OEM on bearing assemblies? Guess I'll go that route as well just hadn't heard that much feedback on them.

I have one of these bikes that I will be working on after I complete the 1999 YZ I am currently building. Love these 92 YZ's, I will be embracing the magenta as well with my build!
I originally bought a Pro X swingarm bearing kit. It came with plastic shims to replace the needle bearings that are under the end caps. The pivot works kit came with real needle bearings and looks just like oem parts. I did not even check oem for all the swingarm parts needed...likely would have cost 3 times more than the pivot works kit... I generally choose oem when buying parts, But I feel the Pivotworks kit is a quality replacement. I will also ad that, I”m not sure how old this Pivotworks kit was that I bought, it could have been a older kit that may have had better manufacturing... you know... before everything was made in China....
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The Shop

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bonseff
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bonseff 5/8/2020 5:04pm
5/8/2020 5:04pm
You are on another level, my man, great work.
sandman768
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sandman768 5/8/2020 7:32pm
5/8/2020 7:32pm
bonseff wrote:
You are on another level, my man, great work.
Hey thanks Bonseff..... not sure how many more of these builds I will take on....I”m enjoying this build and taking my time with it....
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sandman768
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sandman768 5/11/2020 6:56pm
5/11/2020 6:56pm
Originally thought I could use this rear wheel... after a closer inspection it will need to be replaced. Has a big dent that the P.O. Tried to repair with a claw hammer and most spokes are seized and corroded. The front wheel is in decent condition...I may just lace up a new rear rim... I have never really built a complete wheel, so this should be interesting...

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mattyhamz2
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mattyhamz2 5/11/2020 10:31pm
5/11/2020 10:31pm
Awesome build! Bike looks great so far and the lower end looks brand new in you last pictures.
1
mattyhamz2
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mattyhamz2 5/11/2020 10:33pm
5/11/2020 10:33pm
Bent206 wrote:
The fit-up probably didn't look that good from Yamaha when it was new.
Considering what it looked like when you bought it, that looks great!
sandman768 wrote:
Thanks, you are most likely correct on fit... I know the rear subframe rails are correct, the seat, side panels & silencer all fit correctly. The...
Thanks, you are most likely correct on fit... I know the rear subframe rails are correct, the seat, side panels & silencer all fit correctly. The p.o. Had the fender mount holes drilled out to fit the misaligned rear rails. Just a little massaging with the die grinder on the fender mount points gave me some adjustment. Now I can move on to fitting new seat foam & cover and prepping plastic for Evo-MX oem decal kit👍
gantry25 wrote:
Nice job on the plastic alignment! Sounds like you're happy with the Pivot Works stuff, no need to go OEM on bearing assemblies? Guess I'll go...
Nice job on the plastic alignment!

Sounds like you're happy with the Pivot Works stuff, no need to go OEM on bearing assemblies? Guess I'll go that route as well just hadn't heard that much feedback on them.

I have one of these bikes that I will be working on after I complete the 1999 YZ I am currently building. Love these 92 YZ's, I will be embracing the magenta as well with my build!
Are you going to do a build thread? I’ve got a 98 that I’m slowly doing stuff on. Would love to see more 96-01 YZ builds
sandman768
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sandman768 5/12/2020 5:08am
5/12/2020 5:08am
mattyhamz2 wrote:
Are you going to do a build thread? I’ve got a 98 that I’m slowly doing stuff on. Would love to see more 96-01 YZ builds
Thanks mattyhamz2.... I planned on having the bottom end cases vapor blasted, but they were so clean it was not needed. I just refinished the covers with a really good matching silver. If I can find a good condition 97-98 YZ I would do a build thread for sure.... do a thread on yours!
1
mattyhamz2
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mattyhamz2 5/12/2020 11:19am
5/12/2020 11:19am
mattyhamz2 wrote:
Are you going to do a build thread? I’ve got a 98 that I’m slowly doing stuff on. Would love to see more 96-01 YZ builds
sandman768 wrote:
Thanks mattyhamz2.... I planned on having the bottom end cases vapor blasted, but they were so clean it was not needed. I just refinished the covers...
Thanks mattyhamz2.... I planned on having the bottom end cases vapor blasted, but they were so clean it was not needed. I just refinished the covers with a really good matching silver. If I can find a good condition 97-98 YZ I would do a build thread for sure.... do a thread on yours!
Welcome! I'm going to have an early 90's 125 build coming soon, so this is huge inspiration!

Haha, I will be doing a build thread for it soon. Progress has been slow though
gantry25
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gantry25 5/12/2020 4:53pm
5/12/2020 4:53pm
sandman768 wrote:
Thanks, you are most likely correct on fit... I know the rear subframe rails are correct, the seat, side panels & silencer all fit correctly. The...
Thanks, you are most likely correct on fit... I know the rear subframe rails are correct, the seat, side panels & silencer all fit correctly. The p.o. Had the fender mount holes drilled out to fit the misaligned rear rails. Just a little massaging with the die grinder on the fender mount points gave me some adjustment. Now I can move on to fitting new seat foam & cover and prepping plastic for Evo-MX oem decal kit👍
gantry25 wrote:
Nice job on the plastic alignment! Sounds like you're happy with the Pivot Works stuff, no need to go OEM on bearing assemblies? Guess I'll go...
Nice job on the plastic alignment!

Sounds like you're happy with the Pivot Works stuff, no need to go OEM on bearing assemblies? Guess I'll go that route as well just hadn't heard that much feedback on them.

I have one of these bikes that I will be working on after I complete the 1999 YZ I am currently building. Love these 92 YZ's, I will be embracing the magenta as well with my build!
mattyhamz2 wrote:
Are you going to do a build thread? I’ve got a 98 that I’m slowly doing stuff on. Would love to see more 96-01 YZ builds
I do plan on doing a build thread for the 99. I am gathering parts now.
1
sandman768
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sandman768 5/12/2020 5:08pm
5/12/2020 5:08pm
gantry25 wrote:
I do plan on doing a build thread for the 99. I am gathering parts now.
Great! Look forward to seeing it...
sandman768
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sandman768 5/13/2020 3:10pm
5/13/2020 3:10pm
New Yamaha take off bars & yz250F upper bar mounts

2
sandman768
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sandman768 5/13/2020 3:14pm
5/13/2020 3:14pm
Icw straightend , welded & pressure tested radiators..No Chinese shit for me..... I refinished them....test fitting...
Honda nut clips
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sandman768
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sandman768 5/13/2020 6:18pm
5/13/2020 6:18pm
Mock up to test fit radiators, grilles and shrouds...
Evo-Mx top quality as usual.... the barn door!

5
sandman768
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sandman768 5/13/2020 6:21pm
5/13/2020 6:21pm
New Oem rear brake spring, footpeg pins & springs.

2

Pit Row

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gantry25
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gantry25 5/14/2020 6:27am
5/14/2020 6:27am
What a great job you are doing on this restoration. Regarding the finish on the engine; Is the engine painted? The engines came from the factory painted, didn't they?
Banana_oil
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Banana_oil 5/14/2020 10:42am
5/14/2020 10:42am
mattyhamz2 wrote:
Are you going to do a build thread? I’ve got a 98 that I’m slowly doing stuff on. Would love to see more 96-01 YZ builds
This build looks promising Sandman! 92 was a really good looking year for all brands. I have a yz 125 waiting to be done.


The 96-01 would be great to see more builds of aswell. Here's my 97.

3
sandman768
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sandman768 5/14/2020 2:24pm
5/14/2020 2:24pm
Brian_Bowles wrote:
The bike is looking fantastic!
Thanks Brian...the Evo- Mx graphics are on point👍
1
sandman768
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sandman768 5/14/2020 2:30pm
5/14/2020 2:30pm
gantry25 wrote:
What a great job you are doing on this restoration. Regarding the finish on the engine; Is the engine painted? The engines came from the factory...
What a great job you are doing on this restoration. Regarding the finish on the engine; Is the engine painted? The engines came from the factory painted, didn't they?
Thanks gantry25. Yes, the cases and clutch cover were finished from the factory. The cases I bought from fellow Vital member Shue415, were in very good condition. I was able to refinish all the cases & covers to match with a GM silver & then I Applied a High temp urethane clearcoat for durability.
sandman768
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sandman768 5/14/2020 2:36pm
5/14/2020 2:36pm
Banana_oil wrote:
This build looks promising Sandman! 92 was a really good looking year for all brands. I have a yz 125 waiting to be done. The 96-01...
This build looks promising Sandman! 92 was a really good looking year for all brands. I have a yz 125 waiting to be done.


The 96-01 would be great to see more builds of aswell. Here's my 97.

Thanks Banana oil... I like the 96-98 YZ”s... I looked at a decent 97 125 over the winter, I should have bought it, but the seller wanted too much, it needed a full redo but was a good base. Your 97 is very nice..
1
sandman768
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sandman768 5/20/2020 1:45pm
5/20/2020 1:45pm
Seemed like a good day to get this seat cover & foam installed... at no point did I feel like I would be able to get the wrinkles out, but kept at it...


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sandman768
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sandman768 5/24/2020 3:36pm
5/24/2020 3:36pm
Watched RMC wheel build video about 10 times... ok... I can do this...



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