As stated in the title I have now cut two motors in half in less than one month. What could be causing this problem? Both times the center cylinder has come apart at speed 85 roughly and just tore the craps out of the motor.
Need more info.
yamahajoe
New member
Which cylinder does the pulse line from the fuel pump go too
daman
New member
ever check jetting??? oil pump?? more info,pics...
viperdougc
Member
did you use the same oil pump???....got any pics of the piston.
I don't have any pictures at this time, but whatever caused it has to do with something outside of the motor. Since I replaced it with a second motor and it happened again. I leaning towards oil mixture. I did extend the track and change up the gears. I may be over revving the motor because of the gear change. I'll see if I can get some pictures today.
daman
New member
how long did it take to blow these? 10 miles 300 miles????? was jetting checked and oil pump?????
viperdougc
Member
pics of the pistons could really help
Dave M
New member
Stop going 85 ???
Sorry..couldn't help it.
Sorry..couldn't help it.
Always good to find the root cause. We need more information and pics.
I have an '02 Viper that I blew the center cylinder on this year. I also extended my track this year, clutched it, changed gears(21/40), Peak Performance Heads, SLP Pipes. I subsequently found out that I had a cracked frame where the clutches go through, which I believe may have led to me blowing a belt, and diesling the engine at 9000rpms, before melting down my center piston apprx. 25 miles later. What I have learned from this?....I increased my pilot jet one size to a 47.5, welded my frames, BUT I personally believe my biggest help was that I am now running apprx. 40:1 ratio on my oil consumption with this set up. This is my 3rd motor in two seasons, and prior to this, I was attempting to keep my usage on par with my buddies that drive Artic Cats, who use maybe a 1/3 qt for a tank of gas, but these triples seem to have too many bearings to keep oiled. I have driven this current motor hard w/o a hiccup, no fouling, no nothing(knock on wood), and I am going to believe it is the oil ratio that keeps them together. If you are in the 60:1 or even 50:1 ratio on your oil, I think you will definately have issues with it staying together. A lot of posts on here about where the oil pump should be set at.
Did you by chance use the same set of carbs and boots for motor #2 that motor #1 had. HMMMM