Hey guys,
I have a 96 blaster as a spare bike and the top end finally went out this weekend. I pulled the head off today and noticed that the piston was seized and had been "shaving" off material off of the piston on the exhaust port of the cylinder. I was going to take the cylinder to be bored out to the next size, so here are my questions:
- I couldn't physically see any metal debris in the crank...but you can't really see too much anyhow, so do I need to split the cases and clean everything out or will it be fine...The cylinder definitely had metal shavings in it...and it looked as if the exhaust ports had extra metal where it "shaved" material off of the top of the piston
- Also, is there any way to flush stuff out of the crank area without splitting the cases?
- If I decided to get the cylinder port/polished, would there be other stuff required to get the bike to run right...it has a bill's pipe on it (diff carb?, etc)
- Will I be safe to just rebuild the top end with a new piston/boring out to the next piston size?
I know that it isn't a banshee, but it is a Yamaha, so I figured allot of you guys may have these bikes for your wife/kids...so your help will be greatly appreciated!
Thanks again,
T