Hanman,Oops, maybe I should have asked that differently. I was wondering how many other people have done this modification. We have built two of these for trackday use and they are awesome. The bike is so light and narrow it makes the extra power and torque feel like a 1000cc superbike.
It's no more work than developing a fuel map for any other modification. Apex Manufacturing does all of our dyno tuning.I bet this took a lot of work to fuel and tune properly.
The benefit in using an OEM crankshaft is the fatigue strength. Most crank manufactures fillet roll the pins which is a massive improvement in fatigue strength over grinding a tangential radius which is what you have to do when welding. I'm not aware of any companies that are able to fillet roll on a prototype basis due to the dedicated tooling required. Stroker cranks are mostly used in drag racing and not road racing due to the amount of time at peak power.Sounds pretty cool. What's the benefit to using the new model crank vs manufacturing a stroker crank out of the old one?
Cost is roughly another $3000 on top of a standard build, this includes the piston kit, crank, rods, block and head gasket. Standard build pricing can be found at www.HanshawEngines.com.What sort of cost and what are the power results?
Nice and which generation match the 765 build?Cost is roughly another $3000 on top of a standard build, this includes the piston kit, crank, rods, block and head gasket. Standard build pricing can be found at www.HanshawEngines.com.
Peak power between the 711cc and 765cc motors is very close, in the low 140's depending on fuel. Increasing the stroke increases torque and produces the same power and equivalent piston speeds which is roughly 1000RPM sooner on the 765cc motors. The torque increase is what makes the bike so much faster accelerating out of corners.
The 765cc modification is only possible when configured to the 2013 or newer Daytona motor.Nice and which generation match the 765 build?
Is it feasible with a street triple engine? 2012 with daytona cam in paticular?
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Email sentIf anyone is interested I have big bore kits available, 711cc or the 765cc.
Compression ratio depends on build but typically results in 14.5:1.
Pistons, wrist pins, clips, and rings are new.
Cylinder block and connecting rods are remanufactured.
711cc kit is $1500 plus shipping
The 765 kit comes with a new crankshaft and new rods and is $3000 plus shipping.
Hanshaw Racing Engines has built dozens of these along with stroker 765cc versions.