DragBikeMike
Serious Thumper
Offline
SuzukiSavage.com Rocks!
Posts: 4284
Honolulu
|
I think we can all appreciate the seriousness of these failures. Try and picture your butt planted on your Savage, doin a sweet 70 mph on the interstate, and this balancer baloney decides to rear its ugly head.
The front of your engine blows out along with a whoppin gusher of oil. You run over the razor-sharp parts and at the same time slather up the rear skin with a generous helping of Rotella. I'm havin nightmares already.
So, I plead with you to tell us more. I know your current focus is on that sweet new motor, but please try and figure out exactly what happened to your old motor before you do the engine swap. It will be a great project, interesting, fun, and gratifying.
You will have to get that balance shaft out of the way before you can pull the mill out of the frame. Grab ahold of that thing, yank it out of there, and break out your phone. Take some pics. See if you can see the drive pin. Can you tell if the drive pin is in place or is it adrift?
Try to rotate the drive gear with your fingers or a screwdriver or something. Can the gear turn independent of the crank shaft?
Your left-hand balance shaft bearing looks fine. How about the right-hand bearing? Is it OK too?
Check the drive key on the driven gear. Is it sheared off?
Ya gotta remove the exhaust system to get the engine out of the frame. That's half-way to gettin the clutch-cover off. Take off the clutch-cover.
How does the primary drive gear nut look? Are the corners folded over, like it was over-torqued? See if you can remove the primary drive gear and cam drive sprocket. Is that cam drive sprocket fractured?
Your balance shaft driven gear (the one with the springs) looks like it might be broken in half. Is the balance shaft drive gear broken too?
I guess it's conceivable that these failures might be somehow related to the cushion springs in the driven gear. If those springs fail to keep the gear and weight phased within acceptable limits the rod and weight might collide. Are all the springs accounted for? Any broken springs?
I thank you again. Sharing this info could save someone's hide. I think we need to figure out what makes this failure tick, come up with a periodic inspection, possibly a way to prevent it from happening. Maybe a way to capture the pin.
Best regards, Mike
|