Blown motor, please help

the damage on the piston crown isn't from deto!!! its from the debris of the lower rod bearing coming apart. sorry to tell you Snowshovel, but the vipers have been pretty common for the center rod bearing letting go. others will disagree, but its been happening to enough of them, where its a fact. it wasn't bad gas, or your jetting. same exact thing happened to a buddy of mine on his '02 viper. he had 5400 miles on his, when his let go. plug color was a safe chocolate brown to cardboard brown, so it wasn't jetting. i feel its the oil pump being too damn lean. i preach and preach, you gotta tighten up the oil pump cable freeplay to .700"-.750". the sooner that pump goes into full pump mode, to sooner those bearings are getting nailed w/lubrication and the better off the engine is in the long run. tear down the engine, send the crank out to get repaired, get new cylinder (i have 1 too if you want it), pickup new head, get new piston/rings/gaskets, and slap it back together and run it. your power valve cleaning had nothing to do w/what happened. that fellow you bought it from, just happened to get rid of it @ the right time......lucky for him.....bad for you.
 
Mopar yeah you are most likely right, Stagg I am at work and cant view Ebay, Is it a motor up for auction? I have emailed a few sled salvage places to see what i can find as well
 
Mopar Thanks for the heads up on that, I have a few emails out to sled salvage places. I am hoping i can find a motor with about 2000-3000 or so miles on it. As it stands now I need at least a lower crank case, Rod, piston, rings, center cylinder, potentially a head. Not sure if i can clean that piston impact metal off the head or not and buff it out. I havent got into the lower case yet, so worst case i need a crank as well.

My fear is i piece meal this old engine back together and one of the other 2 rods go being as the engine has 7000 miles on it. Although now after doing some research i have at least 5 other cases of the center piston rod failing and going thru the lower case like mine did.
 
Who knows of a reputable source for having Yamaha crankshafts repaired or rebuilt? There will probably be many people needing this service as our SRXs and Vipers are accumulating a lot of mileage.
 
AAB in Quebec was highly recommended, but there is likely someone closer to home.
 
Im a die hard Vikings fan i could never let a Cheese Head touch my crank... pun intended ;)!

I have received emails back form 2 salvage yards, one has an engine for 1500 exchanged and another for 1700 exchanged.
 
mopar1rules said:
jeff @ midwest crank in green bay wisconsin

920-434-3630
Click to expand...

I've heard this is the guy to go to also. That is the guy I'd use, but I hope I never have to use!!!!!!!!

Mike
 
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