GStwin.com GS500 Message Forum

Main Area => Projects / Builds, Racing and Tech => Topic started by: junior112 on May 25, 2015, 07:15:43 PM

Title: Bearing help w/rebuilt motor.
Post by: junior112 on May 25, 2015, 07:15:43 PM
So I blew my motor in my 1998 GS500E when i was in highschool, then it sat around forever. The motor went to waste so I thought it would be easier to buy a rebuilt motor. Long story short I'm rebuilding the motor.

Now comes the bearing problems.

I have the manual and looked up the codes.
The codes on my case read :
B     B
BBBB..... The code on my crank read BAAA. Is that normal? abnormal? suppose to be different? My Connecting rod read #2 and the code on the other side of my crank is L22R. Could someone please give me some insight on these codes and which bearings to order. I'm wanting to replace ALL the motor and tranny bearings.

Any help would be much appreciated!
Title: Re: Bearing help w/rebuilt motor.
Post by: The Buddha on May 25, 2015, 07:22:59 PM
The codes stamped on the rear of the case are what it had to start with. Its hardly any use, the over sized bearings are not available, and neither are any of the original sizes either.
I dunno, see if any of the serious racers can help you here, but from what I recall ... a spun lower end = dead motor.
Cool.
Buddha.
Title: Re: Bearing help w/rebuilt motor.
Post by: J_Walker on May 25, 2015, 09:03:18 PM
Quote from: junior112 on May 25, 2015, 07:15:43 PM
So I blew my motor in my 1998 GS500E when i was in highschool, then it sat around forever. The motor went to waste so I thought it would be easier to buy a rebuilt motor. Long story short I'm rebuilding the motor.

Now comes the bearing problems.

I have the manual and looked up the codes.
The codes on my case read :
B     B
BBBB..... The code on my crank read BAAA. Is that normal? abnormal? suppose to be different? My Connecting rod read #2 and the code on the other side of my crank is L22R. Could someone please give me some insight on these codes and which bearings to order. I'm wanting to replace ALL the motor and tranny bearings.

Any help would be much appreciated!

Can you get to the bearing itself? if you can see the outer race of the bearing. all is not lost. bearings have little funny numbers and letters stamped onto them..... if you can take a picture of the existing bearing outer race with the numbers on them, I can help.  :thumb:
Title: Re: Bearing help w/rebuilt motor.
Post by: junior112 on August 13, 2015, 08:18:45 PM


Can you get to the bearing itself? if you can see the outer race of the bearing. all is not lost. bearings have little funny numbers and letters stamped onto them..... if you can take a picture of the existing bearing outer race with the numbers on them, I can help.  :thumb:
[/quote]

Sorry walker, I've been busy so I just logged in! Thanks for the advice. I yanked a bearing out found this:

F-780 NDG
333A

Any advice?

Also It won't let me upload the pics I took. I can email them to you if you need.