2006-07 yamaha R6r build went wrong

here are some pics of the build...

home made piston stop


head after re surface


shimed and hard welded trans


torquing rods


Knife edge crank



More transmission



Before and during head work.

 

You can easily take too much off the head.

That engine definitely has a limit on squish higher than many other engines. The pistons touch.

I would find a way to do a leak down just to confirm seal.

Don’t be embarrassed, learn something from it.

 

Just an update.

Took out all the avgas, and put 91 in.

Ran the autotune for a track day, and adjusting trim %.

Once i had it 'dialed in' the bike was a rocket. Holy hell does this thing pull at 9K rpm. Every gear change the front tire would start to lift.

Thanks for the advice here!

took home a couple trophy this weekend!

As far as anyone is concerened, the bike only made 100hp :P

 

cool !

 

Thread resurrection.

Decided to put the bike back on the dyno with regular fuel, a healthy clutch, and properly strapped down rear tire. (went to a different dyno shop all together)

Only difference is that put the motor in a 08 chassis with the adjustable velocity stacks.

Pretty happy with the numbers now!

 

pump gas? nice torks

 

Yeah, pump gas, 91 Shell no ethanol