How's This for YAMAHA Dependability?

Never thought about posting a pic of mine. 10,005 and ready for another 10,000. I did replace pistons and rings at 9400. Found .005-.008 collapse of the piston skirts. You should probably consider them as well. Broke it in with Yamalube for the first tank of oil, then nothing but Amsoil. Swithched to Interceptor 2nd yr. wit 3500 on the clock. Inside of motor was spotless and leakdown was great.YOu could even see the crosshatch on the cylinder walls. Tempaflow 2 yrs. ago and a roller clutch as well. Now she rides on 136 rails with a Ripsaw studded with 162 down the middle. Ohlins shocks and 7" CnA Pros with Bergstrom 8" Triples. Put 136 rail coolers and a rear cooler in as well.
 
If people would replace the piston rings at regular intervals, they wouldnt need pistons. Once the rings are worn, it allows the piston to rock back and forth more in the bore and this starts to wear the skirts. Piston rings stabilize the piston and seal the gases. Changing rings every 2500-3000 miles will not only keep the engine running top notch, it keeps the pistons alive even longer. Alot of guys say but "my sled runs perfect and it has 5000 miles on it", and I am sure it does still run good, but I also bet it has blow by from worn piston rings!! And over time it doest run the same way as if it didnt have excessive blow by. The blow by contaminates the fresh intake charge with half burnt contaminated exhaust leaking past the rings into the lower case, and into the freshly charged mix in the crankcase. By keeping the rings fresh the motor runs stronger and will perform better, and the powder forged pistons in a srx/viper will last a long,long time. A 2 stroke engine takes a beating, parts wear 2 times faster then a 4 stroke does, they do make 2 times the power from half as much displacement and are way,way lighter, BUT, if they were so reliable and would run for 10's of thousands of miles with no maintence, we would have 2 stroke cars ,with direct fuel injection to meet emissions, but piston ring/piston wear has always been and always will be a issue with a 2 stroke engine.
 
Last edited:
I saw an 02 the other day with 11,840 miles - owner took good care - polished tunnel and not a scratch on the thing.
 
I'm at the 4 thousand mark,and thinking after this season replacing,pistons and rings.So what i am gathering is All i need to replace is the rings??
 
yamvip said:
I'm at the 4 thousand mark,and thinking after this season replacing,pistons and rings.So what i am gathering is All i need to replace is the rings??
Click to expand...

spec out your pistons while your in there.
 
MY 02 viper had 7900 miles before I bought a new rage last year, I always ran klotz oil which smelled good but everyone behind me said it burnt there eyes power valves still needed cleaned every 2000 miles, the only work ever done was a broken w arm and cracked y pipe but it still ran 100% Mostly Pa miles with 2 trips to canada and wrecked 3 times replaced 2 trailing arms, Wow it's great to work construction and be laid off in the winter well not this year!!
 
You must log in or register to reply here.


Back
Top