What Does A Low Boost BKING Feel Like?

[DDT]

Can anyone describe the feeling of riding a Bking (or I guess busa) with low boost (like the RCC bolt on kit).

I have turbo cars and at high elevation they are hard to beat. Turbos first bring back most the power lost by elevation, and then boost above that. In general where I live atmospheric pressure is -3psi from sea level. So a 4 psi kit is making 7 psi over "atmosphere" so it is like going from no boost at sea level to +7psi when compared to other bikes. So think of it like a 200rwhp liter bike, makes 160rwhp here. A 240rwhp turbo Bking at 4psi would make around 230rwhp here (there is a slight heat loss from more compressing). So it would "very fast" here.

But what do they feel like other than "fast". I have old school single bug turbo, low compression cars. I have new modern ones.

The old school are feel like.... wait....wait... wait... wait.. something is happing... holy crap tires just broke loose.... big turbo spikes. They are much harder to drive in corners because it either needs to always be on boost in corners or off boost. The steep boost ramp can cause havoc in corners and breaking traction.

New school twin turbo with factory anti-lag make a turbo car feel almost like a N/A car, just more powerful and more torque low.

So just wondering do the turbo kits have the "boost spike" or are they smooth on boost curves? Or at least smooth boost at speeds that public roads in the mountains can be ridden at?

I am really debating on buying S1000RR or putting turbo on BKING (i would keep Bking even with buying another bike).

To keep "keep up" with an S1000RR (lower weight and good power) a bking here would need about 198rwhp. The turbo kit beats that by about 30hp. (sea level with my weight a bking would need about 245rwhp).

I just dont want to deal with huge turbo boost spikes on a bike.

 

[Schwartzy]

I will hopefully be able to answer your question within the next month, unless you are only interested in the boost from a turbo. I am in the process of installing a TTS supercharger. I prefer the more controllable linear power of a supercharger verses the turbo boost. They claim 310 to 360 BHP.

 

[c10]

 

[Mythos]

I love my Gen2 busa but just gotta mention, the Gen2 ZX-14r makes boost just off of idle speed unlike the busa that does it at 3000 rpm (which is still pretty good). I'm going with a RCC turbo on my 14. Early in my education but just seems like I picked a better bike to turbo for general use and for ultra high speed if I ever do that. Still, if you hand me a 200+ mph busa or a ZX-14, I'd take the busa. ....just I'm building my own and I'm glad I went with the 14 this time. If I'm not satisfied, I'll build a turbo Hayabusa. There's just so many bikes that do what a big bore can't, I'm more inclined to go with one of those instead in the future. All out speed is amazing but there's a lot more and going turbo is going in a whole nother direction. Ground clearance is one. ...you know your bike won't lean as far without dragging that turbo exhaust or air filter , right? A turbo exhaust with a muffler out back is a lot fatter too. A turbo isn't going to shed weight either like a race exhaust would.

I wish I could give you my opinion based on personal experience with turbo but from all of my queries with RCC at this point, my assessment along with my 17 years of experience sport riding on the road, You go turbo for high speed. You don't worry about lag, you don't worry about cornering. You made it a freegin crazy high speed machine and that's what it's for. I might be perfectly happy with my ZX-14 on the road but I just know it's not going to be as light weight and nimble as my NA busa and Gen 1 ZX-14 are/were. Those are different bikes for different purposes. You want something that fast as hell, you picked the right bike to turbo. If you want a daily driver that's darn near as fast, I'd just throw a race exhaust on there and enjoy the sound and reduced weight. The bikes are already so damn fast right of the box.

 

[c10]

Riding a turbo bike in the corners requires talent , and Luck . That Bking went into boost mid corner and tried to high side me . You cant really tell how close in that video but its by the power plant leaving a left hander on maintenance throttle. I was just able to get the throttle closed in time and shift enough to keep from being spit off .

There is a great article from the 2000's when a turbo GSXR 750 tried to compete on a road course against 20 other sport machines. It was nearly last place . the Kawasaki ZX12R and Kawasaki 636 placed 1st and 2nd track times

 

[Hayabusa Wannabe]

That Bking went into boost mid corner and tried to high side me . You cant really tell how close in that video but its by the power plant leaving a left hander on maintenance throttle.

Should not the turbo size, waste gate, and engine management be selected to never boost under these conditions? Would Frank at Powerhouse prevent this in a build?

 

[c10]

Should not the turbo size, waste gate, and engine management be selected to never boost under these conditions? Would Frank at Powerhouse prevent this in a build?

good luck on that why do you think there are no turbo bikes road racing be it club lvl or pro . Every so often you will see a turbo bike on a track day , but its not what they expected .

 

[airborneuph]

Back in the mid 90's, in Formula USA roadracing, Team Mister consistently won the class with a turbocharged Honda 900RR, to the point where they were eventually barred from entry.. And that was saying a lot, because FUSA was a class of run what you brung, from N20 250 cc bikes all the way to, and including, tire shredding 1500 cc air/oil stroker gsxr's .. i remember watching them wheelie the entire long straight at Pocono raceway ..
They proved beyond a doubt, at last in those days of roadracing, that turbocharging worked on roadracing bikes .. ..

SR Archive: Team Mr. Honda CBR900RR Turbo - UFO 1996

As part of Sport Rider's 1996 UFO (Unlimited Flying Objects) the crew rides one of the fastest street bikes Team Mr.'s Honda CBR900RR Turbo.

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