Change the piston ring?

[itzra]

Hello guys,i need your advice, i am getting ready my banshee for this season, lubing everithing, changing trans oil and all that stuff, and my uncle recomend me to change the piston rings, eventough the engine still running good, last year i used the quad alot, about 4 times a week, around five hours on weekends. he doesnt have a shee, but he has a very good experience in two stroke motocross engines

 

so what do you think, would this prevent repair the entire engine in the future?

[Larry's Shee]

Do a compression test, that will tell you.

[captainhowdie]

Do a compression test, that will tell you.

Yup...what he said!

[blowit]

Hello guys,i need your advice, i am getting ready my banshee for this season, lubing everithing, changing trans oil and all that stuff, and my uncle recomend me to change the piston rings, eventough the engine still running good, last year i used the quad alot, about 4 times a week, around five hours on weekends. he doesnt have a shee, but he has a very good experience in two stroke motocross engines

 

so what do you think, would this prevent repair the entire engine in the future?

 

 

http://mullengineering.com/rt/support.htm

 

I recommend you read a tech article we did a while back on comp testing. In short, do NOT put all your trust in a comp test. I have seen them literally ready to grenade, all while showing perfect compression. If you beat on it for a year, spend a few bucks on gaskets at the least and open it to see how it is wearing. If nothing else, it will give a gauge as to how long the motor will last.

 

You really need to mic the cylinders and pistons as well as inspect the rings for proper wear. Piece of mind is a great thing!

 

 

Mull Engineering

[Duneman101]

In short, do NOT put all your trust in a comp test. I have seen them literally ready to grenade, all while showing perfect compression. If you beat on it for a year, spend a few bucks on gaskets at the least and open it to see how it is wearing. If nothing else, it will give a gauge as to how long the motor will last.

 

You really need to mic the cylinders and pistons as well as inspect the rings for proper wear. Piece of mind is a great thing!

 

I def agree with blowit on this one, low compression is a symptom of a problem, but there are plenty of other factors. if you put a decent amount of ride time on your bike, you should take it down in the off season and look it over.

 

I did this the second i purchased my last banshee because i bought it when it was -30 deg out side and i sure as heck wasn't gonna ride it, i comp tested it it was a perfect 135 in each cylinder... i took off the top end and as soon as i had the right side off, i noticed the skirt of the piston was holding on by a thread, if i had ridden it like that it probably would have fallen into the crank causing a disaster. new piston kit cost $150 which wasn't bad compared to the cost of a new crank and all the other damage that might have occured.

[itzra]

Great !!! thanks for your advise