Dune Thrashing!!

[Bryan Raffa]

Just got my bike back this weekend .. from my trip to the dunes back in march.. and this is what 3 days in the dunes looks like.. of a thrashing... I rebuilt this motor back before i took it the first time to Ca .. this thing git's it's ass handed to it.. every time i ride it!! see you at Trike Fest!! :twisted:

look at the dome of the piston,, you see the squish band? lol can you see the crack in the head all the way around? LOL I will never use a spark plug fix a thred again!YAMAHONDAMAN

[90guy]

Haha sorry it may be a dumb question but I've seen a lot of trashed motors but have never seen a rod bent like that. What actually caused it to bend like that?

[oldskool83]

I gotta say, I've never seen someone almost excited to keep rebuilding and messing up motors. Maybe it's time for a motor that lasts???

[oeduardo67]

Absolutely amazing. How'd you like the dunes?

[Dirtcrasher]

My Christ, can you even make coffee Raffa?? :lol:

[Bryan Raffa]

Haha sorry it may be a dumb question but I've seen a lot of trashed motors but have never seen a rod bent like that. What actually caused it to bend like that?

really HOT and a ABRUPT STOP! LOL hot rings sticking caused the wrist pin to rip out of the bottom of the piston ,, when I took the pipe of and looked up. I was looking at the wrist pin hole on the piston... thoe's that looked up it got a chuckel! I will hang it with my axle's and pistons.. heads ect.. LOL

[Bryan Raffa]

Absolutely amazing. How'd you like the dunes?
one of the best times you will have ..

[MTS]

That was one of the best, holy trailprotrailprotrailprotrailpro how did that happin iv seen in a while, "hey josh you got a wrist pin bearing?" As it fell out takin the pipe off:lol:

[Bryan Raffa]

HOT it was mid 90's!!!!!!!!!!!!!!!!!!!! guessing it was too hot for the air cooled.. the rings started to stick and it ripped the wrist pin out of the bottom of the piston,,, the rest was history as the piston turned and the crank proceeded to pound it through the head.. lol

[atc300r]

Iv never seen one that thrashed before .I read in Dirtwheels years ago about a Banshee that was in a race and they blew one side and bent the rod.The team mechanics heated it straitghen it put new piston and rings in it and it held up for the race the next day.I had an aircooled 250r pull the wrist pin out of the bottom of the piston (wrist pin to short for piston) it happened at home while I was tuning it. Mine didnt hurt anything but the piston,wrist pin and wrist pin bearing.

[3wheeled roofer]

That Honda of halls seem to move you round them dunes pretty good. I have one I will sell you next year.lmmfao Hope all goes well with the rebuild. latr brother triker

[JasonB]

crazy to see you pull it apart out there in the dunes, that piston trailprotrailprotrailprotrailpro the bed!

[Rigaman]

DAMN!!!!!!! trailprotrailprotrailprotrailprotrailpro!!!! trailprotrailprotrailprotrailprotrailpro!!!! haha Gotta love the trailpro


Thats the 490?

[fabiodriven]

I like how you attribute it to "3 days of dune thrashing" as if the rest of the planet isn't familiar with the history of the YZ490 engines. :lol:

[Bryan Raffa]

I like how you attribute it to "3 days of dune thrashing" as if the rest of the planet isn't familiar with the history of the YZ490 engines. :lol:

ya dont you worry ..I'm coming for you.... better get on a diet .. your gonna need it! :lol: ,,,ya the history of every air cooled motor ...ever built.... they get HOT on a 96 degree day... Even when there WFO! 95% of the time.... LMFAO!

[Bryan Raffa]

Cases are un harmed.. she took a ass woopin...Looks like the combination of a shotty wrist pin hole also .. look at the thickness just with the naked eye.. tore another down for parts... just in case i need a left or right crank ...