Bpown pistons and marked cylinder walls

pup55

pup55

New member
Joined
Mar 21, 2007
Messages
285
Age
64
Location
Boylston Ma.
Blown pistons and marked cylinder walls

I blew up both pistons in my 96 Vmax-600. Both pistons top front had a chunk taken out right at the piston ring. The problem is that it also chewed up my cylinder walls at the exhaust ports. Can my cylinders be repaired or do I have to buy new cylinders? If I can not repair them is there a place to buy used parts?I think both pistons were put in backwards? The hole on the pistons should be facing the intake side, but they were facing the exhaust side. Would this cause my sled to blow up

DSC01971-1.jpg
 
Last edited:

there's a couple of places that can repair them, I would recommend Millenium Technologies. very good guys to deal with. Keith in particular.
 
Pup can you post a bigger one,hard to see it....she does look scary lean..

send it to me if need be..
 
The sled only ran for about 20 minutes before this happened.When I bought the sled it had 1 bad piston. I went and bought 2 new piston and installed. The tech at the dealer were I bought the piston said it looks like it is geeting enough oil. I am not sure what the jetting is set at. Do you still think it is a lean condition? When I bought the sled it ran pretty good with the 1 bad piston. It started fine but had no power and that is how I new something was wrong.
 
20 min. hmmm, well the only thing you can do is put it back together right
check your jetting, clean the carbs and keep a close eye on it for a wile.

that pic still is unclear if that is a clean break or if that got melted away..

i would go right through that thing check evrything out for spec.
 
they both were clean breaks. It does not look like there was any melting. When I put the new pistons in I took it for a 5 minute ride and it ran fine. the next time I warmed it up and took it for a ride and as soon as I hit the trottle it just bogged down and had no power . Thanks for you help and I will have to go threw the sled and check everything.
 
Did you clean the carbs that thing look's real lean.The arrow side is supposed to point towards the exhaust side.
By the looks of the pics the pistons look backwads the pin location is right in line with the exhaust posrt.They never are because the ring can hook one of the ports and break off and that looks like what happened in your pic.
 
So it looks like this could of happened from having the pistons in backwards? do you think I have to replace the cylinders or can I have them repaired?
 
So it looks like it was from the pistons being in backwards? Can I have the cylinders repaired or do I have to replace them?
 
yes that probably was the problem and yes they can be fixed, post a ad in the wanted section on the site here for two good used one's, maybe one
of the members has one or two..
 
You must log in or register to reply here.


Back
Top