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The Vintage Japanese Motorcycle Owners Group: Discussion Forums

Vintage Japanese Motorcycle Owners Group :: View topic - YJ2 restoration project


YJ2 restoration project

 
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CL-100
Weekend Warrior
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Joined: Apr 04, 2014
Posts: 70
Location: Asheville, NC

PostPosted: Mon Aug 28, 2017 3:02 pm    Post subject: YJ2 restoration project Reply with quote

I'm in the middle of a restoration project for a 1965 Yamaha YJ2S and thought I'd share some pics of my progress. I bought this bike at Barber in October 2014.


newoldj2.jpg
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This is the bike as it looked when I brought it home.
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crank1.jpg
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Kind of a busy picture but I had the crank balance checked. It was near perfect. The bike only has 550 miles on it.
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60engine1.jpg
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Right side of engine as it goes back together.
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60engine2.jpg
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Left side of engine in progress.
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Last edited by CL-100 on Wed Sep 06, 2017 1:05 pm; edited 2 times in total
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spurlock
Commuter
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Joined: Jul 08, 2014
Posts: 817
Location: Vacaville, CA

PostPosted: Mon Aug 28, 2017 7:47 pm    Post subject: Reply with quote

Hey CL100, great story! That's great that you got to be involved in the rebuild. The bike will be all the more meaningful to you with your intimate knowledge of its moving parts. I'm looking forward to seeing the rest of the job.

-Bill

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1975 Honda XL250K2
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1989 Honda GB500tt
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CL-100
Weekend Warrior
Weekend Warrior


Joined: Apr 04, 2014
Posts: 70
Location: Asheville, NC

PostPosted: Tue Aug 29, 2017 3:45 am    Post subject: Reply with quote

The story takes quite a turn as we "tried" to move forward. I ended up disassembling everything but the transmission and the crank itself. I'm going through some old emails to find pictures. I hope to post more in the next day or two.
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Thomas8
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Joined: Apr 14, 2012
Posts: 238
Location: Hillsboro, Ore., USA

PostPosted: Sun Sep 10, 2017 6:10 am    Post subject: Reply with quote

That's a really pretty bike. With only 550 miles on it why did the engine need to come apart?
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dgjessing
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Joined: Aug 11, 2017
Posts: 51
Location: Columbus, OH

PostPosted: Sun Sep 10, 2017 6:30 am    Post subject: Reply with quote

Thomas8 wrote:
That's a really pretty bike. With only 550 miles on it why did the engine need to come apart?


Those old crank seals have got to be bad by now.
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CL-100
Weekend Warrior
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Joined: Apr 04, 2014
Posts: 70
Location: Asheville, NC

PostPosted: Mon Sep 11, 2017 12:30 pm    Post subject: Reply with quote

This was to be my first attempt to restore a two stroke engine so I picked an easy one. The bike had been seized at one time and I was going to replace all the seals anyway. Since the crank and big end bearings were good, I decided it wouldn't break the bank to go ahead and replace the other bearings.
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dgjessing
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Joined: Aug 11, 2017
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Location: Columbus, OH

PostPosted: Mon Sep 11, 2017 2:28 pm    Post subject: Reply with quote

It's a beauty Very Happy
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CL-100
Weekend Warrior
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Joined: Apr 04, 2014
Posts: 70
Location: Asheville, NC

PostPosted: Thu Sep 14, 2017 1:15 pm    Post subject: Reply with quote

A few pics after the engine was finished up.


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CL-100
Weekend Warrior
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Joined: Apr 04, 2014
Posts: 70
Location: Asheville, NC

PostPosted: Thu Sep 14, 2017 1:42 pm    Post subject: Reply with quote

Stripped the red paint off by hand. Found some filler on the front fender I didn't realize was there.


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fasterspider
Full Throttle
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Joined: Feb 04, 2007
Posts: 3217
Location: Granada Hills, SFV, Ca.

PostPosted: Thu Sep 14, 2017 8:42 pm    Post subject: Reply with quote

I really like how your engine came out, my MG1-T Omaha Trailmaster has the 80cc big brother and man did it look good right after rebuild, looks a little dirty now being I keep it outside but, put fuel in and kick it to life first kick every time.
I keep the 6 volt battery charged and put fuel in her now and then and run that smoker just for shitz & giggles.
Enjoy that little smoker, very cool little bike.

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1964 Yamaha MG1-T Trailmaster
1974 Suzuki TS185 Sierra Suitcase Cycle
1981 Yamaha XT250H
Sold CBX and both Trail 90s were stolen
fasterspider [at] gmail [dot] com
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CL-100
Weekend Warrior
Weekend Warrior


Joined: Apr 04, 2014
Posts: 70
Location: Asheville, NC

PostPosted: Sat Sep 16, 2017 4:01 am    Post subject: Reply with quote

Thanks for the comments. I wanted a YJ2S when I was 15 but couldn't afford one at the time and found a YJ1 instead. I love the sound and simplicity of the two stroke.
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