Yz125 Project Bike

So i picked up an 02 yz125 today. The PO said that he was in 5th and the bike just died out and now it has ZERO compression. The bikes loaded with goodies which will be going on my personal bike. The bike came with Asv levers, Wolf CDI, Fmf SST Pipe, Shorty silencer, Eline pipeguard, carbonfiber frame guards, Revalved Suspension, Vforce Rad Valve(?), Hammerhead Shifter, and WC rad braces. The bike has very low hours and even still has the caution stickers on the front and rear fenders! The clutch cover has barely any wear on it. Scored this for 575$, cant wait to tear her apart and get her running again.

Edited by Peterrides

Sorry for the bad pics.

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That's a steal in my book. Crank croaked maybe?

That's a steal in my book. Crank croaked maybe?

I hope not, when i push down the kicker, it seems to be smooth and the Previous kid said it had no up/down play when he took the cylinder off. But yea, i was suprised, the Wolf Cdi is pretty awesome, crazy retail price too.

Looks a little lean haha. And he ran a namura piston :S. Looks like the cylinder is fine other then needing to be replated. What do you guys think?

Oh and the crank is in really good shape, no up/down play at all and minimal side to side

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Cold seizure?

Looks like a good time for a 144cc kit!!

Looks like a good time for a 144cc kit!!

 

 

Cold seizure?

This isnt going to be my personal bike so its not getting a 144 kit. But im sure it would be one kickass bike. Im just going to get it replated and throw in a wiseco topend and call it done. Im going to sell it and see if i can get something a little newer or maybe even a 250 2t. Im not sure if a cold seizure could destroy the cylinder and piston that well, im guessing the PO was PINNED in 5th for too long. He ran 40:1 but im unaware of what octane gas.

This isnt going to be my personal bike so its not getting a 144 kit. But im sure it would be one kickass bike. Im just going to get it replated and throw in a wiseco topend and call it done. Im going to sell it and see if i can get something a little newer or maybe even a 250 2t. Im not sure if a cold seizure could destroy the cylinder and piston that well, im guessing the PO was PINNED in 5th for too long. He ran 40:1 but im unaware of what octane gas.

 

I agree about the cold seizure. Usually a cold seizure is 4 corners not like what that piston shows. You are probable right about pinning it and it was probable on 87 octane as well. I understand about making a few bucks and stepping up. I have been thinking about finding a similar bike and making a 144 kit with a heavy flywheel for a woods riding bike for my boy. I think that set up would be a lot of fun.

Going to call Ken O'Connor most likely tomorrow about getting the cylinder replated. Will update on what goes on later.

Going to drop off the cylinder for replating at kens shop today in CT.

Going to drop off the cylinder for replating at kens shop today in CT.

 

I have talked to Kevin on the phone a few times. He is a very knowledgeable person and I like his You tube video's as well.

Should be getting the cylinder and a new Wiseco Topend Kit in a couple weeks at most.

Got the cylinder + a new wiseco topend from ken. Great dude, awesome work. Highly recommend him. Heres some pics. Sorry for the Shitty pics, took them from my phone. Bike has a ton of compression. Ken fixed a cracked exhaust bridge and replated the cylinder. Took about 3 weeks total.

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All I need is a new sparkplug, and some coolant and it'll fire up tomorrow. Also had a rich blue spark so I'm not worried about that. Will make a video of the first startup.

Pat yourself on the back for finding that bike/price!

I wish I could find a 125 around that price. Been after one for months that needs work but all over £1000 in the uk

Pat yourself on the back for finding that bike/price!

Thanks man, spent a few months looking for the right project bike and this was the best bike I could find.

I wish I could find a 125 around that price. Been after one for months that needs work but all over £1000 in the uk

You gotta take your time, doesn't come quick but it'll come. Just search ur local ad daily like I did (craigslist).

We don't really use Craig's in the uk. But I will keep searching

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