Fastest stock-motor Gen 1 Busa?

[sgvridgerunner]

Hey everyone,

I was a bit surprised when my bone-stock-motored commuter Busa went 194.5mph at El Mirage last month. I had a little tail wind to help, but it dyno'd at 150.0whp just 2 weeks prior to the run. 194mph - in 1.3miles - on dirt - with only 150whp (and 77,500 miles on it)? It makes me wonder if I can hit 200mph with a full aero kit and race fuel (was running 87 pump).




So that leads me to ask/challenge - what kind of speeds have others seen with a bone-stock motor Gen1 (all else being unlimited design). Must be naturally aspirated, no nitrous, stock injectors, stock airbox, stock clutch, etc. In the interest of aero, the exhaust can be changed. I was also running a stock-map 07 ecu with the speed limiter removed.

The reason I ask, is that I have a intake cam/head port job waiting to go on this thing for a few more ponies, but I'm now curious to see just what I can get out of it in stock trim. Am I close enough to the max to call it good, or should I keep trying?

Thanks,
Dave

Oh, and many thanks to Dave at Worldwide for the wheel bearings, Kent Riches (Airtech), Richard Sims (Sims Motorsports), and Guy Caputo (Tiger Racing) for the bodywork and fuel cell.

[zrxdean]

I would say go ahead and modify the engine. You could go a long time without seeing a tailwind like that at El Mirage. Nice job    Dean

[piratediverjefff]

Congrats bro,and with a DA of over 5,000'!

[05calibusa]

Impressive

[Rocketgeezer]

Hell no your not maxed out, go for it, you can never have to much speed, or to many guns, but do keep in mind, your stone stock motor, would do much better with mild mods

[entropy]

You done good, no doubt about it!!!

The Busa stock motor top dog is Brother Bob Sellers and he definitely gives you something to shoot for:
Oct 2012 – 209.0 at Texas Mile (personal best in the mile on his bike, no motor mods)
July 2012 – 20x.x at Wilmington
Aug 2009 - 214.x Loring (1.5 mile)
Mar 2009 - 206.x Texas Mile
Oct 2008 - 198.x stock Texas Mile

[scott g]

This kind of sets the scale of what has been done,
and what might be possible.

In about 2000, I ran a TOTALLY STOCK 2000
year hayabusa at the Maxton mile.
Stock air-box, and air filter.  Engine and everything
else untouched except
1-tooth bigger on the front. 

Two(2) back-to-back runs at 192.+++ mph.

That's the "stock baseline.

You done good, no doubt about it!!!

The Busa stock motor top dog is Brother Bob Sellers
and he definitely gives you something to shoot for:
Oct 2012 – 209.0 at Texas Mile (personal best in the mile on his bike, no motor mods)
July 2012 – 20x.x at Wilmington
Aug 2009 - 214.x Loring (1.5 mile)
Mar 2009 - 206.x Texas Mile
Oct 2008 - 198.x stock Texas Mile

Based on my experience, I would think that bike MIGHT
have run 194.5 MPH at the 1.5 mile Loring event.

I think a better exhaust system might have been
good for 2-3 mph.

Using the "best" modified-class bodywork might have
been good for an additional 5 mph.

Using the best "special construction" bodywork might have
been good for an additional 10 MPH OVER the Modified class bodywork.

So:  Stock mike with pipe and excellent bodywork
should be good for 210 mph on your bike.

Good luck !

[entropy]

This kind of sets the scale of what has been done,
and what might be possible.

In about 2000, I ran a TOTALLY STOCK 2000
year hayabusa at the Maxton mile.
Stock air-box, and air filter.  Engine and everything
else untouched except
1-tooth bigger on the front. 

Two(2) back-to-back runs at 192.+++ mph.

That's the "stock baseline.

You done good, no doubt about it!!!

The Busa stock motor top dog is Brother Bob Sellers
and he definitely gives you something to shoot for:
Oct 2012 – 209.0 at Texas Mile (personal best in the mile on his bike, no motor mods)
July 2012 – 20x.x at Wilmington
Aug 2009 - 214.x Loring (1.5 mile)
Mar 2009 - 206.x Texas Mile
Oct 2008 - 198.x stock Texas Mile

Based on my experience, I would think that bike MIGHT
have run 194.5 MPH at the 1.5 mile Loring event.

I think a better exhaust system might have been
good for 2-3 mph.

Using the "best" modified-class bodywork might have
been good for an additional 5 mph.

Using the best "special construction" bodywork might have
been good for an additional 10 MPH OVER the Modified class bodywork.

So:  Stock mike with pipe and excellent bodywork
should be good for 210 mph on your bike.

Good luck !

Scott,
Since you quoted me...
I gotta ask what is your point about Brutha Bob's numbers?
His Gen II Busa had 100% stock motor, nearly stock body (Guy's front fender was only body mod), and a pipe.
Sure he had a tailwind on some of those passes, but some not.

sgv asked: "It makes me wonder if I can hit 200mph with a full aero kit and race fuel..."
It seems to me that in view of Bob's results, sgvridgerunner's potential with "full aero kit" is higher than your forecast of 210.
He just needs to:
1. prep/gear his bike perfectly = easy
2. have a lil tailwind = will happen with time
2. ride like Bob = the hard part
Karl

[speedduck]

Hi Karl, this was about stock gen1.
We have one lady here who rides a stock 2008 gen2, she has Yoshimura exhaust and a tune, nothing more, 203.4mph. Well, if it does count as a stock when she waxes the bike and rims, cleans chains, fresh lube for chain before every run, front straps, no shifter.

[entropy]

Hi Karl, this was about stock gen1.
We have one lady here who rides a stock 2008 gen2, she has Yoshimura exhaust and a tune, nothing more, 203.4mph. Well, if it does count as a stock when she waxes the bike and rims, cleans chains, fresh lube for chain before every run, front straps, no shifter.

I missed that part...

[scott g]

This kind of sets the scale of what has been done,
and what might be possible.

In about 2000, I ran a TOTALLY STOCK 2000
year hayabusa at the Maxton mile.
Stock air-box, and air filter.  Engine and everything
else untouched except
1-tooth bigger on the front. 

Two(2) back-to-back runs at 192.+++ mph.

That's the "stock baseline.

You done good, no doubt about it!!!

The Busa stock motor top dog is Brother Bob Sellers
and he definitely gives you something to shoot for:
Oct 2012 – 209.0 at Texas Mile (personal best in the mile on his bike, no motor mods)
July 2012 – 20x.x at Wilmington
Aug 2009 - 214.x Loring (1.5 mile)
Mar 2009 - 206.x Texas Mile
Oct 2008 - 198.x stock Texas Mile

Based on my experience, I would think that bike MIGHT
have run 194.5 MPH at the 1.5 mile Loring event.

I think a better exhaust system might have been
good for 2-3 mph.

Using the "best" modified-class bodywork might have
been good for an additional 5 mph.

Using the best "special construction" bodywork might have
been good for an additional 10 MPH OVER the Modified class bodywork.

So:  Stock mike with pipe and excellent bodywork
should be good for 210 mph on your bike.

Good luck !

Scott,
Since you quoted me...
I gotta ask what is your point about Brutha Bob's numbers?

Karl

My point was about how WELL Mr. Sellers has done.

He is a good example for the rest of us........

[dnhabusa]

what kind of speeds have others seen with a bone-stock motor Gen1

I've seen one that went 198.96 mph. Wind conditions were left to right crosswinds. His bike was a 2005 model.

[GBUSA]

what kind of speeds have others seen with a bone-stock motor Gen1

I've seen one that went 198.96 mph. Wind conditions were left to right crosswinds. His bike was a 2005 model.

[sgvridgerunner]

This kind of sets the scale of what has been done,
and what might be possible.

In about 2000, I ran a TOTALLY STOCK 2000
year hayabusa at the Maxton mile.
Stock air-box, and air filter.  Engine and everything
else untouched except
1-tooth bigger on the front. 

Two(2) back-to-back runs at 192.+++ mph.

That's the "stock baseline.

You done good, no doubt about it!!!

The Busa stock motor top dog is Brother Bob Sellers
and he definitely gives you something to shoot for:
Oct 2012 – 209.0 at Texas Mile (personal best in the mile on his bike, no motor mods)
July 2012 – 20x.x at Wilmington
Aug 2009 - 214.x Loring (1.5 mile)
Mar 2009 - 206.x Texas Mile
Oct 2008 - 198.x stock Texas Mile

Based on my experience, I would think that bike MIGHT
have run 194.5 MPH at the 1.5 mile Loring event.

I think a better exhaust system might have been
good for 2-3 mph.

Using the "best" modified-class bodywork might have
been good for an additional 5 mph.

Using the best "special construction" bodywork might have
been good for an additional 10 MPH OVER the Modified class bodywork.

So:  Stock mike with pipe and excellent bodywork
should be good for 210 mph on your bike.

Good luck !

Cool! then I'm gonna keep gunning for more. I've got a full APS fairing kit on the way from Airtech, so I'll throw some race fuel in and get the ecu tuned and see what she'll give me. The engine compression numbers are 180-182 across the board, so she's showing her age a little. Since the surface at El Mirage has 10-15% less traction than asphalt, I REALLY hope we get another Mojave Magnum next year!!!!!

Scott - I concur with your baseline numbers. This bike ran a pair of 191's at Mojave Mile with a stock-profile tail section and stock ride height (was lowered and had extended tail on the 194).

Crazy thing is - I bought this bike for only $3,000, put about $400 into it to get it running, then threw the FRP fairings on for the track. 

Thanks for the info guys,
Dave

[Pete]

I went 200.2 on my stock-motor bike, road fuel, stock fairing. Just an Akro exhaust, DB screen, front sprocket swap and a bit of lowering. In the UK the best stock-motor speeds would have been achieved at the event called JD9 I expect, when there was a stiff tailwind directly down the runway. Added 8-10mph to many people's PB. Sadly, I was timekeeping that day not riding.