Kawasaki H2R Proves It Really Can Go 249 MPH On A (Closed) Public Road

[Ghostt]

Link to original page on YouTube.

Full article
http://lanesplitter.jalopnik.com/kaw...los-1782923821

[HoneyBadgerRy]

Since when can a production motorcycle break 200mph, and since when are production motorcycles not speed limited to 185 mph? I think I missed something.

[RacinNinja]

Originally Posted by HoneyBadgerRy

Since when can a production motorcycle break 200mph, and since when are production motorcycles not speed limited to 185 mph? I think I missed something.

This was done in Turkey, not the US.

[HoneyBadgerRy]

Originally Posted by RacinNinja

This was done in Turkey, not the US.

Even if they didn't have speed limiters, last year we couldn't break 200mph, 249 is one hell of a leap. It takes a lot to get a busa to break 200 I don't understand where the h2t has magic.

[RacinNinja]

Originally Posted by HoneyBadgerRy

Even if they didn't have speed limiters, last year we couldn't break 200mph, 249 is one hell of a leap. It takes a lot to get a busa to break 200 I don't understand where the h2t has magic.

Factory Supercharger. My dyno tuner here can get the standard H2 to 257 RWHP with some ECU work, pipe and a different air filter.

Busa's are not quite 200 with a full tune and pipe. Plus the H2 has much better aerodynamics than the Busa.

https://www.facebook.com/nels.byersd...7312843611294/

[Flying]

My guess is that Busas are old enough to be taken out of the comparison and that H2s have spooky aero magic going for them.

[HoneyBadgerRy]

Originally Posted by RacinNinja

Factory Supercharger. My dyno tuner here can get the standard H2 to 249 RWHP with some ECU work, pipe and a different air filter.

Busa's are not quite 200 with a full tune and pipe. Plus the H2 has much better aerodynamics than the Busa.

A pipe and tune doesn't get a busa to 200, you need to turbo it... Alot...

[HoneyBadgerRy]

Originally Posted by Flying

My guess is that Busas are old enough to be taken out of the comparison and that H2s have spooky aero magic going for them.

Aerodynamics could go a long way, but they did a ton and spent a ton to get the buss as aerodynamic as possible. I know advancements in technology blah blah blah, but 50mph isn't easy at this speed. @RacerX what do you think about this.

[RacinNinja]

Originally Posted by HoneyBadgerRy

A pipe and tune doesn't get a busa to 200, you need to turbo it... Alot...

Nope. You can get really close to 200 with a good tune, pipe and air filter. Think 195-196 HP for a Gen II. Brocks Alien Head II exhaust, to be specific.

[HoneyBadgerRy]

Originally Posted by RacinNinja

Nope. You can get really close to 200 with a good tune, pipe and air filter. Think 195-196 HP for a Gen II.

I'd like to see a NA buss break 200, because I've seen turbo ones not break 200.

[RacinNinja]

Originally Posted by HoneyBadgerRy

I'd like to see a NA buss break 200, because I've seen turbo ones not break 200.

Then whoever did the turbo one was a moron lol. Probably had a huge intake leak and didn't know it. Was it a Gen 1 by chance?

Lemme see what I can dig up for dyno sheets from my guy.

[Ghostt]

The article states, not stock

In the WorldSBK post cited above, the bike is described as adjusted but not “modified.” An H2R is $50,000 straight out of the box and comes with the official warning that it “is a closed course riding use only model and is not manufactured for use on public roads, streets or highways. All usage of this vehicle should be limited to riding on a closed course.”

[RacinNinja]

Ah, so it's the R and not the H2.

That right there is the answer.

[HoneyBadgerRy]

On the Osman Gazi Bridge, also known as the İzmit Bay Bridge, in his native Turkey Sofuoğlu just laid down what’s being called the highest speed ever hit on an H2R– an indicated 400 kilometers per hour, or 249 MPH in ’Murican/English.

Well that explains it. "Indicated" Indicated doesn't mean dick. Its about as good as my friend (more like aquanitince) who said he was going 186 down I94 on his friends R6.... Yeah buddy, keep dreaming.

[RacinNinja]

So I can't find any dyno charts right off the bat on his Facebook page, other than turbo-nitrous versions pulling 220+ HP.

I did find some forum posts saying 190-195 HP with exhaust, air filter and ECU tune (not PowerCommander, that's only 4 out of 8 injectors).

Will look more after vacation. I leave here in 15 minutes lol.

[choneofakind]

Originally Posted by HoneyBadgerRy

Since when can a production motorcycle break 200mph, and since when are production motorcycles not speed limited to 185 mph? I think I missed something.

http://lanesplitter.jalopnik.com/200...-sa-1635032908
^^ slight mods, but generally the production bike. Over 200 mph. The biggest stuff related to speed was the body work (technically could have been more streamlined than factory bodywork) and the exhaust/ECU tune.

The alleged 186 mph limiter is only on the ZX14 and Busa, AFAIK. I seem to remember reading that the stock S1000RR has been run to more than 186 on a run way during a magazine comparison because they made the interesting note that current liter bikes are faster than their brethren with 300cc+ of more displacement.

Originally Posted by HoneyBadgerRy

Aerodynamics could go a long way, but they did a ton and spent a ton to get the buss as aerodynamic as possible. I know advancements in technology blah blah blah, but 50mph isn't easy at this speed. @RacerX what do you think about this.

...the aero design was done when the bike was made. Which was... 1999? I know that air hasn't changed since the 90's, but the CFD packages used and amount of time spent by manufacturers has. Think F1 team obsession and fuel economy increase requirements. They're insane.

Aero is the single biggest resistance you have to overcome once you hit like... 25 mph. So saying that aero goes a long way is an understatement.

Originally Posted by HoneyBadgerRy

I'd like to see a NA buss break 200, because I've seen turbo ones not break 200.

Drag strip =/= land speed record attempt. Fat guy with a bad launch stands a good chance of not hitting 200 on a drag strip, regardless of what he's riding. A land speed record attempt has a flying start at the timing zone.

[VaFish]

Originally Posted by HoneyBadgerRy

Well that explains it. "Indicated" Indicated doesn't mean dick. Its about as good as my friend (more like aquanitince) who said he was going 186 down I94 on his friends R6.... Yeah buddy, keep dreaming.

Yeah, 249 mph "indicated " is probably closer to 220-225 actual speed.

[Ghostt]

Still pretty fast no matter which way you look at it.

[HoneyBadgerRy]

Yeah, but I have no problem beliving an h2r that's been modified can reach 220mph. 250 I don't believe.

[JohnnyBravo]

That's hot

[Bob2010]

Indicated speed as in what was displayed on the speedometer not verified by gps or radar. Could
It really be off by 25-30mph?


Good to know - most bikes record max speed. My buddy's wife knew that before he did.....

[Whiskey]

Originally Posted by Bob2010

Indicated speed as in what was displayed on the speedometer not verified by gps or radar. Could
It really be off by 25-30mph?


Good to know - most bikes record max speed. My buddy's wife knew that before he did.....

25mph off at 225mph is 11.11%, 8-12% is the 'usual' range that speedos overestimate, so yes it could be off by that much at that speed