Gen 1 busa motor build

G

Gen1_busa

Registered
Hello, everyone, I recently picked up an 00 Gen 1 Hayabusa beside doing all maintenance I would like to build the motor. Please let me know what you guys think. I would like to drag racing the bike maybe run a small shot of nitrous.



  1. Race porting and competition valve job/ new valve seals/etc
  2. GEN 1 BUSA STOCK INTAKE CAM FOR EXHAUST SIDE - WITH ADJUSTABLE SPROCKET
  3. High compression piston 13:1 81mm
http://www.hayabusazone.com/camsprockets.html

has anyone used this kit with the Cam and timing gear?



The High compression kit I would like to run

  1. https://www.ebay.com/itm/WISECO-CK104-FORGED-PISTON-KIT-GSX1300r-HAYABUSA-BUSA-HIGH-COMPRESSION-DRAGBIKE-/252752026306
 
If you’re gonna spend the money on a ported head, might as well go with more displacement. Bumping compression might gain you 10hp on a gen 1.

Also if you’re spending the money for a ported head you’re shooting yourself in the foot running two intake cams. Spend the money and get cams that are matched to the head work, displacement, and compression.
 
I have done 2 pretty much identical std bore/std stroke builds that you are describing, however, a mild port, 2 intakes, 13.5 wisecos, put out 190 to the rear with an unbaffled sidewinder, small airbox mod. A budget gen 1 build with gen 2 output. Still looking at $2-2.5k min (if you assemble) with bearings, oil pump gear, trans cut and anything else I didn't mention. A very fun performing street build that doesn't need to be turned up in rpm to pull, in fact, the cam degrees I shoot for, it doesn't benefit to go past 10.5k
 
Gen1_busa said:
Hello, everyone, I recently picked up an 00 Gen 1 Hayabusa beside doing all maintenance I would like to build the motor. Please let me know what you guys think. I would like to drag racing the bike maybe run a small shot of nitrous.



  1. Race porting and competition valve job/ new valve seals/etc
  2. GEN 1 BUSA STOCK INTAKE CAM FOR EXHAUST SIDE - WITH ADJUSTABLE SPROCKET
  3. High compression piston 13:1 81mm
http://www.hayabusazone.com/camsprockets.html

has anyone used this kit with the Cam and timing gear?



The High compression kit I would like to run

  1. https://www.ebay.com/itm/WISECO-CK104-FORGED-PISTON-KIT-GSX1300r-HAYABUSA-BUSA-HIGH-COMPRESSION-DRAGBIKE-/252752026306
Click to expand...
HI. There is no cheep way to go fast. Do what Mr Brown said first. Have you raced before? Cars? Bikes? I am building a big HP motor now motor,trans and ecu about $26,000.00 +. You can have a lot of FUN with what Mr Brown said.
 
Gen1_busa said:
Yes, I have raced before. My previous bike was a zx12. Kevin Jones
did you run any nitrous on either setup?
Click to expand...
I didn't. I have everything to spray except a nos controller and even 3 2lb bottles laying around I had intent of spraying one of the 1441s I built for a customer who backed out and left me with it, a specific nitrous build. however if I was going to do any of that anymore I would probably go with at least an aem infinity or another standalone ecu. I wouldn't spend a ton on it like I did with another boosted bike ecu but having closed loop and a fast ass processor is something that once you have the comfort level of that, its a little daunting to go back to piggybacks. I cant afford to wreck up a $4k 1441 that I built. I cant count how many times my microstorm simply didn't engage and the nc2 seems to like to steal voltage from the tps of a gen 1 just like the wego did. All frustrating. Those budget builds will hold a 60 shot with the APE springs easily. More if it were studded which would be easy enough to go back to. A standalone just makes everything so much easier. Just remember that you need the clutch to back up your HP expectations and be realistic about it. How many horse are you gonna put on some HD springs and a stock basket?
 
Kevin Jones said:
I didn't. I have everything to spray except a nos controller and even 3 2lb bottles laying around I had intent of spraying one of the 1441s I built for a customer who backed out and left me with it, a specific nitrous build. however if I was going to do any of that anymore I would probably go with at least an aem infinity or another standalone ecu. I wouldn't spend a ton on it like I did with another boosted bike ecu but having closed loop and a fast ass processor is something that once you have the comfort level of that, its a little daunting to go back to piggybacks. I cant afford to wreck up a $4k 1441 that I built. I cant count how many times my microstorm simply didn't engage and the nc2 seems to like to steal voltage from the tps of a gen 1 just like the wego did. All frustrating. Those budget builds will hold a 60 shot with the APE springs easily. More if it were studded which would be easy enough to go back to. A standalone just makes everything so much easier. Just remember that you need the clutch to back up your HP expectations and be realistic about it. How many horse are you gonna put on some HD springs and a stock basket?
Click to expand...


I found the limit of hd springs which is 255 whp on a nitrous bike. The ape springs won’t hold 1397 with 50 shot. Trying to find stronger springs to put in so I can run more nitrous on a stock hand clutch
 
Mr Brown said:
Better put a billet basket in it before you grenade the stocker...
Click to expand...

We will see what happens. I might just break down and buy a hand slider for the bike. Sounds like this winter everyone is upgrading big time and shooting for low to mid 8s. So might have to step it up to a hand slider and start running 2 kits.
 
busakiller said:
I found the limit of hd springs which is 255 whp on a nitrous bike. The ape springs won’t hold 1397 with 50 shot. Trying to find stronger springs to put in so I can run more nitrous on a stock hand clutch
Click to expand...
We use APE springs with more power than that.
 
Dennis said:
We use APE springs with more power than that.
Click to expand...

I bought these springs and ran all 6 of them and my bike would only trap 159 cause the clutch was slipping. I put some other springs I had laying around and they held more. But were slipping at the top but I was trapping 163. No other changes other then the springs.

E26874C8-762B-457B-A3DF-30A04162BCA5.png
 
busakiller said:
I bought these springs and ran all 6 of them and my bike would only trap 159 cause the clutch was slipping. I put some other springs I had laying around and they held more. But were slipping at the top but I was trapping 163. No other changes other then the springs.

View attachment 1610049
Click to expand...
LOL, clutch springs! I was thinking valve springs since the topic was motor build. Yeah, getting a stock clutch to hold without super stiff springs is tough. Lockup or hand slider will get you there.
 
Dennis you get more time to play than I do but I couldn't get good 60ft times with a lockup. I could make packs last a long time but I tried a lockup with both a 7 and 10lb spring and couldn't get lower than 1.46 with a 68" unless I lowered the static and reduced pack longevity
 
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