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24-11-2005, 03:19pm
www.graphicartmotodesign....yabusa.htm
Patrik Furstenhoff is GHOSTRIDER
It was a challenge for us to build the fist Hayabusa turbokit. Gary Rothwell from England was the buyer. He is a famous
stuntman and the former speed world-recordholder on the rearwheel with his old Suzuki GSXR 1100W turbo.
His record last year was 285 km/h. After Patrik Furstenhoff from Sweden has manage to break it twice, and the record
today is 323,9 km/h!!
Gary`s Hayabusa had to be better and stronger than Patrik`s 325 hp Blackbird that we also build. No expense saved. The turbo
is a big Mitsubishi TD04HL with integrated wastegate and pop off valve.To make the engine reliable, we have used a special
made curved intercooler, placed in front of the radiator.
The exhaust pipe is 3" out of the turbo, and 2,5" under the engine. The muffler is special made to last the extreme heat that we
know appears during the record testing. It is 2,5" inside, oval and made in carbon. We have worked a lot with the fuel injection
system. It is easy to remove the stock EFI control unit, and put on a aftermarket fuel injection system, but we know from
experience that they are never as reliable as the stock parts. So we are using the stock control unit, and 4 extra injectors. This
keeps the price on a low level, it`s reliable and people on the other side of the world can buy spareparts from Suzuki if the stock
EFI unit some day is damaged.
All the exhaust parts are made in stainless steel and carbon, and the intercooler, tubes and airbox on top of the throttle body is
made in aluminum. We have also lowered the compression ratio with a 2mm-cylinder spacer.
This effects the camshaft timing, and that`s why we put on adjustable cam sprockets from Yoshimura on the intake camshaft.
The exhaust camshaft doesn`t need it.
The turboparts is designed so it`s possible to use all the standard fairings, and the groundclerance is the same as stock
When we dynotest strong bikes like this, we use the Superflow SF901 dyno. We have also an interia dyno, but it`s not a good
choice during development of turbobikes.
After 2 days testing in the dyno, we manage to get more than 250 kW DIN on the output shaft. (340 hp), and 300 Nm in torque
(220 lbft.) The turbopressure is set to 1,3 bar (19psi.). We use unleaded pumpgas.
How is the bike to drive on the street?
The idle is like a stock bike. And when you drive carefully, you don`t feel any difference. But when you open the trottles just a
little you can feel that it`s powerful. At 3000 rpm it starts to boost, and at 5000 rpm it lifts the front on any gear. But it`s not
difficult to drive. The power is so adjustable. But to be honest, 340 horse power on a street bike is almost too much. It's more than twice as powerful as a stock bike, but it feels like 4 times stronger. On my own Hayabusa turbo I shall have "only" 220 kW DIN. (300hp). But it`s good to know that we have a safetylimit after that.
Gary Rothwell is a man that probably appreciate all the power he can get, and one of the few that really can use it.
The turbokit are available , and are identical with the one Gary uses. We have already delivered
many kits.
We will update this page when Gary has tried to beat the record.
Patrik Furstenhoff is GHOSTRIDER
It was a challenge for us to build the fist Hayabusa turbokit. Gary Rothwell from England was the buyer. He is a famous
stuntman and the former speed world-recordholder on the rearwheel with his old Suzuki GSXR 1100W turbo.
His record last year was 285 km/h. After Patrik Furstenhoff from Sweden has manage to break it twice, and the record
today is 323,9 km/h!!
Gary`s Hayabusa had to be better and stronger than Patrik`s 325 hp Blackbird that we also build. No expense saved. The turbo
is a big Mitsubishi TD04HL with integrated wastegate and pop off valve.To make the engine reliable, we have used a special
made curved intercooler, placed in front of the radiator.
The exhaust pipe is 3" out of the turbo, and 2,5" under the engine. The muffler is special made to last the extreme heat that we
know appears during the record testing. It is 2,5" inside, oval and made in carbon. We have worked a lot with the fuel injection
system. It is easy to remove the stock EFI control unit, and put on a aftermarket fuel injection system, but we know from
experience that they are never as reliable as the stock parts. So we are using the stock control unit, and 4 extra injectors. This
keeps the price on a low level, it`s reliable and people on the other side of the world can buy spareparts from Suzuki if the stock
EFI unit some day is damaged.
All the exhaust parts are made in stainless steel and carbon, and the intercooler, tubes and airbox on top of the throttle body is
made in aluminum. We have also lowered the compression ratio with a 2mm-cylinder spacer.
This effects the camshaft timing, and that`s why we put on adjustable cam sprockets from Yoshimura on the intake camshaft.
The exhaust camshaft doesn`t need it.
The turboparts is designed so it`s possible to use all the standard fairings, and the groundclerance is the same as stock
When we dynotest strong bikes like this, we use the Superflow SF901 dyno. We have also an interia dyno, but it`s not a good
choice during development of turbobikes.
After 2 days testing in the dyno, we manage to get more than 250 kW DIN on the output shaft. (340 hp), and 300 Nm in torque
(220 lbft.) The turbopressure is set to 1,3 bar (19psi.). We use unleaded pumpgas.
How is the bike to drive on the street?
The idle is like a stock bike. And when you drive carefully, you don`t feel any difference. But when you open the trottles just a
little you can feel that it`s powerful. At 3000 rpm it starts to boost, and at 5000 rpm it lifts the front on any gear. But it`s not
difficult to drive. The power is so adjustable. But to be honest, 340 horse power on a street bike is almost too much. It's more than twice as powerful as a stock bike, but it feels like 4 times stronger. On my own Hayabusa turbo I shall have "only" 220 kW DIN. (300hp). But it`s good to know that we have a safetylimit after that.
Gary Rothwell is a man that probably appreciate all the power he can get, and one of the few that really can use it.
The turbokit are available , and are identical with the one Gary uses. We have already delivered
many kits.
We will update this page when Gary has tried to beat the record.