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Old 11-02-2013, 10:38 AM   #3616
whittrated03
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Fork size?

What size forks r on my 89 xt 350?
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Old 11-02-2013, 05:47 PM   #3617
gearheadE30
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Quote:
Originally Posted by whittrated03 View Post
What size forks r on my 89 xt 350?
All xt350s are the same. 36mm iirc.
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Old 11-03-2013, 05:40 PM   #3618
sjc56
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small end bearings

I wanted to put the cylinder and piston on today, I checked the new piston pin on the contacting rod and there is lateral play, up and down. Yamaha doesn't seem to list a small end bearing or show one.
http://www.partspitstop.com/oemparts...nkshaft-piston
So do I have to replace the connecting rod?
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Old 11-03-2013, 09:19 PM   #3619
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Originally Posted by sjc56 View Post
I wanted to put the cylinder and piston on today, I checked the new piston pin on the contacting rod and there is lateral play, up and down. Yamaha doesn't seem to list a small end bearing or show one.
http://www.partspitstop.com/oemparts...nkshaft-piston
So do I have to replace the connecting rod?
Yeah, you do. No small end bearings. The wrist pin could also be the culprit - pull it out and check it with a mic or calipers or something to see if it is still round. If you can find the spec for the small end, you can do the same to the con rod. Any of the interface surfaces could cause that play.
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Old 11-04-2013, 05:33 AM   #3620
sjc56
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Thats with new wrist pin. Rats, not sure what to do now. I already paid to much for the bike. Do I dig deeper or just put it back together and ride it it till it blows.
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Old 11-04-2013, 02:38 PM   #3621
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Thats with new wrist pin. Rats, not sure what to do now. I already paid to much for the bike. Do I dig deeper or just put it back together and ride it it till it blows.
How bad is the play? Mine has a small amount and it still runs fine. Hasn't gotten worse in 2k miles, really.
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Old 11-05-2013, 05:11 AM   #3622
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There is about .010 play. You can see scoring on the bearing.
A friend of mine a very well respected motorcycle mechanic thinks he can fit a new bushing, thing is if there is a bushing it's not bronze, a magnet sticks to it, there is a lip but maybe only a couple of thousands. So I'm not sure if there is a bearing there.
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Old 11-05-2013, 10:23 AM   #3623
Pring7
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Hi this is my first post. I just got a 1997 XT350 the other week and have been cleaning it up and making it road ready. I was noticing when I ride it that the neutral light doesn't come on when it clicks into neutral. I'm wondering what this could be. Any ideas?
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Old 11-05-2013, 10:37 AM   #3624
gearheadE30
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Quote:
Originally Posted by sjc56 View Post
There is about .010 play. You can see scoring on the bearing.
A friend of mine a very well respected motorcycle mechanic thinks he can fit a new bushing, thing is if there is a bushing it's not bronze, a magnet sticks to it, there is a lip but maybe only a couple of thousands. So I'm not sure if there is a bearing there.
wow, 10 thou is quite a bit. Rod bearings are typically some sort of alloy, not bronze. Also, I believe the rod is ferrous, so that would affect magnetism. you'd probably have to bore out the rod, press in a bearing of some sort of hardened metal, and then reassemble, at which point you may as well put a new rod in. If he's got a way to try it, it probly wouldn't hurt, though.

Article on engine bearings:
http://www.turbomagazine.com/tech/08...s_garage_tech/

Quote:
Originally Posted by Pring7 View Post
Hi this is my first post. I just got a 1997 XT350 the other week and have been cleaning it up and making it road ready. I was noticing when I ride it that the neutral light doesn't come on when it clicks into neutral. I'm wondering what this could be. Any ideas?
Burned out bulb, bad wiring, or the switch is damaged or worn out. It's not a complicated circuit. A little quality time with a multimeter should find the problem in no time if it's not the bulb.
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Old 11-05-2013, 10:49 AM   #3625
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Decent advice I appreciate it. The previous owner had some brushguards installed and then he wired in extra turn signals (no clue why) and I'm guessing during all that he probably knocked something loose. I'll post a picture of the bike here in a few.
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Old 11-06-2013, 10:13 AM   #3626
JensEskildsen
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Originally Posted by sjc56 View Post
Thats with new wrist pin. Rats, not sure what to do now. I already paid to much for the bike. Do I dig deeper or just put it back together and ride it it till it blows.
See if you can have it bored out and install a bushing. Might cost ya a bit, as the machinest would most likely have to press the crank apart to line up the rod.

I had some small play in mine, with a new wristpin. I assemled and nothing has happened in 1500km.

A new crank with rod can be had here, doesnt seem to expensive for what it is, if they really stock it, the partno seems discontinued:

http://www.ronayers.com/55V-11400-02-00-P3989878.aspx
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Old 11-06-2013, 11:01 AM   #3627
sjc56
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Well if I go through the trouble of removing the rod I may as well get a new one.
http://www.boats.net/parts/search/Ya...TON/parts.html
I'm just nerves about what i'll find in there.
My two mechanic friends said with a loss wrist pin you will hammer the motor to deaf. The wrist is pounding on the crank may take awhile but it can't be good.
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Old 11-07-2013, 03:21 AM   #3628
whittrated03
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I have a 1989 xt350 that I'm parting out. Everything is there EXCEPT front wheel and forks. You may email or text me for pics ......whittrated@yahoo.com. OR 254_708_4860,Phillip
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Old 11-07-2013, 05:20 AM   #3629
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email sent. I'm interested in the motor and tank.
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Old 11-08-2013, 02:59 PM   #3630
Jaunty
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hey guys i havent taken apart my motor seized up yet, but i did remove the valve cover and checked the tension of the timing chain and its SUPER tight. Is it possible that a component broke down below and seized the engine up near the chain rather than the piston?

I will dig deeper i just haven't had the time lately.
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