More Power for the Busa

[Pickem-up]

I put 6 inches in my swingarm and found out I lost a little bit of my get up and go. What can I do to get a little extra horse power? I got a power commander, tre,and full muzzy racing exaust on the bike now. Should I change the sprockets now? If do do I go up on teeth in the front and down on teeeth in the back or is it the other way around. All input will be appreciated.


Busa's rule the road!!!!!!

[Mimic]

First and foremost, welcome.

Now lets get to power.

For cheapest easiet power adder. I'd start with small box mod and pair mod. With a full system, pc3, TRE(doesn't add power) and small box with pair mod, you're good for about 170ish HP

need more punch without getting punched in your bank account? I'd go +2 or +4 on the back sprocket. Going up in the back affects the speedo being off by less then going down on the front and well as less strenuous on the output shaft bairings.

Still not enough?

You can put a stock busa intake cam on the exhaust side and that's good for another 5HP.

Still not happy? well now we start getting into pricier solutions

you can get stock bore high compression pistonsto get you up to the 185 mark. But while you're at it, why not over size and go 1397 instead and hit 200RWHP since your'e already taking the engine apart to add pistons.

Still not enough, well there's always a shot of nitrous? No?

then you can boost:whistling:
Stage 1 turbo 250HP?

shall I continue?:umm:

[Tybalt]

First and foremost, welcome.

Now lets get to power.

For cheapest easiet power adder. I'd start with small box mod and pair mod. With a full system, pc3, TRE(doesn't add power) and small box with pair mod, you're good for about 170ish HP

need more punch without getting punched in your bank account? I'd go +2 or +4 on the back sprocket. Going up in the back affects the speedo being off by less then going down on the front and well as less strenuous on the output shaft bairings.

Still not enough?

You can put a stock busa intake cam on the exhaust side and that's good for another 5HP.

Still not happy? well now we start getting into pricier solutions

you can get stock bore high compression pistonsto get you up to the 185 mark. But while you're at it, why not over size and go 1397 instead and hit 200RWHP since your'e already taking the engine apart to add pistons.

Still not enough, well there's always a shot of nitrous? No?

then you can boost:whistling:
Stage 1 turbo 250HP?

shall I continue?:umm:
+1:cheers: Welcome, I would add the dual Intake cams! too!
is it 1 down on the front is equal= to going up 3 on the rear?
I had run 43 on the rear, lost to much top end, went back to stock 40:wacko:

[Mimic]

its about the same -1 in the front or +3 in the back.

40 X 17 =2.35
43 x 17 =2.529
40 x 16 =2.5


I had a +4 on my 2001 and I found it to rev high all the time but man was it fun snapping the throttle off the light and drifting the a$$ a bit in turns:)

[Tybalt]

its about the same -1 in the front or +3 in the back.

40 X 17 =2.35
43 x 17 =2.529
40 x 16 =2.5


I had a +4 on my 2001 and I found it to rev high all the time but man was it fun snapping the throttle off the light and drifting the a$$ a bit in turns:)
I located this gearing chart:smoke:

Hayabusa: Gear Ratio & Speed Chart
A couple of folks were asking about the top-speed of a Hayabusa...
Here's a chart that will give you a theoretical max speed by gear for cooresponding gear ratio.

* Note: There's a lot more to reaching these speeds beyond sprockets! *

GEAR RATIO = SPEED IN GEARS

Gearing 1st 2nd 3rd 4th 5th 6th

16/39 77 104 132 157 178 194
16/40 75 101 129 153 173 189
16/41 73 99 126 150 169 184
16/42 72 97 123 146 165 180
16/43 70 95 120 143 161 176

17/39 82 111 141 167 189 206
17/40 80 108 137 163 184 201
17/41 78 105 134 159 180 196
17/42 76 103 131 155 176 191
17/43 74 100 128 152 171 187

18/39 87 117 149 177 200 218
18/40 85 114 145 173 195 212
18/41 83 112 142 168 190 207
18/42 81 109 138 164 186 202
18/43 79 106 135 161 182 198

19/39 92 124 157 187 211 230
19/40 89 121 153 182 206 224
19/41 87 118 150 178 201 219
19/42 85 115 146 173 196 214
19/43 83 112 143 170 192 209
__________________

[Mimic]

I located this gearing chart:smoke:

Hayabusa: Gear Ratio & Speed Chart
A couple of folks were asking about the top-speed of a Hayabusa...
Here's a chart that will give you a theoretical max speed by gear for cooresponding gear ratio.

* Note: There's a lot more to reaching these speeds beyond sprockets! *

GEAR RATIO = SPEED IN GEARS

Gearing 1st 2nd 3rd 4th 5th 6th

16/39 77 104 132 157 178 194
16/40 75 101 129 153 173 189
16/41 73 99 126 150 169 184
16/42 72 97 123 146 165 180
16/43 70 95 120 143 161 176

17/39 82 111 141 167 189 206
17/40 80 108 137 163 184 201
17/41 78 105 134 159 180 196
17/42 76 103 131 155 176 191
17/43 74 100 128 152 171 187

18/39 87 117 149 177 200 218
18/40 85 114 145 173 195 212
18/41 83 112 142 168 190 207
18/42 81 109 138 164 186 202
18/43 79 106 135 161 182 198

19/39 92 124 157 187 211 230
19/40 89 121 153 182 206 224
19/41 87 118 150 178 201 219
19/42 85 115 146 173 196 214
19/43 83 112 143 170 192 209
__________________

If you look at the following ratios, you can see given enough power, you're busa will reach 187MPH even with the +3 in the back
17/42 76 103 131 155 176 191
17/43 74 100 128 152 171 187

a +4 yeilds about 183MPH and really how often are we hitting that on rode riding. I currently have a +2 and +4 sitting in the garage. I was debating slapping them on and testing but I didn't want the speedo to be off and the over reving motor considering I'm only getting about 22MPG with my 1397.

Anyway, now that the 1397 is sold, I'm gonna go stage 1 and stock gearing with a stage one is plenty purky enough:whistling:

[Pickem-up]

Thanks for the input. I will start with the airbox mod and pair mod. If that's not enough I will go to the 1397 with stage 1. I love my 06 Burgandy/black busa and want to give some 14's hell on the track this summer. Keep them Busa's Rollin

[Mimic]

Thanks for the input. I will start with the airbox mod and pair mod. If that's not enough I will go to the 1397 with stage 1. I love my 06 Burgandy/black busa and want to give some 14's hell on the track this summer. Keep them Busa's Rollin

I would advise against going 1397 WITH a stage 1. When over sizing, you're reducing wall thickness in the cylinders which will cause them to hear up more as well as reduce strength. Now the thinner walls are completely safe a reliable on a naturally aspirated motor but add boost and you're aiming for trouble. Besides, you can make 650+ HP on a stock bore motor. If you feel 250hp isn't enough, pop in a base gasket or turbo pistons(stock bore) and crank up the boost to give you 300HP. If you want more, then you're gonna have to get after market rods. A beams or H beams depending how much power you want to make.

Like you said, start with the airbox and pair mod and see how you like it, if it's not enough, try sprockets and if still unsatisfied, well we got site sponsors for all your boosting and tuning needs!:smoke: