new 1580cc Busa owner
- Thread starter Brando850
- Start date
squale147
Registered
+1000The bike below has a 1571 (85mm x 69.25mm), which is pretty close to your 1580. I wouldn't dare try to ride it on the street although I could possibly sneak it out to a local bike night if I didn't let it idle in traffic like a stocker. It runs pretty decent but on a very giving dyno it only made 248 on race fuel with very small cams which is a far cry from 300 out of your 1580. Being that my other race bike makes close to 300 on motor and its much larger than the 1571 I would call the BS flag on your 300hp claim from a 1580.
I built a 1580cc gen2roadbike.It has a muzzy 86mm block and an offset ground 68mm crank.Its done several thousand road miles,no problems.It has 12.5;1 comp and only makes
around 220hp,its setup for torque and cruising,it gets 12miles/Litre on the highway.Gen2 throttle bodies and ecu with the woolich logbox made this a bike with stock rideability,its actually easier to ride than a stocker.The torque down low on this thing is where its at,pure joy to roll the throttle on in the higher gears,no waiting for the power like a 1340.budget for around
15-16k ride in ride out for someone to build tune,tune and hand back,it took me a year of planning,building and refining to make it as nice as it became,not cheap,it sits in traffic no problems,temp doesn't climb,I used A,B,C modes in reverse because A mode is the default mode I put the softest timing and richest fuelling in that map and progressing sharpened up the tune in b and c modes based on the known fuel in the tank.It can be done but it was a whole package,not just a catalog of parts to acquire the cc,s and throw together.
around 220hp,its setup for torque and cruising,it gets 12miles/Litre on the highway.Gen2 throttle bodies and ecu with the woolich logbox made this a bike with stock rideability,its actually easier to ride than a stocker.The torque down low on this thing is where its at,pure joy to roll the throttle on in the higher gears,no waiting for the power like a 1340.budget for around
15-16k ride in ride out for someone to build tune,tune and hand back,it took me a year of planning,building and refining to make it as nice as it became,not cheap,it sits in traffic no problems,temp doesn't climb,I used A,B,C modes in reverse because A mode is the default mode I put the softest timing and richest fuelling in that map and progressing sharpened up the tune in b and c modes based on the known fuel in the tank.It can be done but it was a whole package,not just a catalog of parts to acquire the cc,s and throw together.
I was already thinking no, then I saw the stock header 
Post Script : I think your friend has some splaining to do lucy.
Post Script : I think your friend has some splaining to do lucy.
sherrod0506
Registered
anyone?Awww dayum! Pretty old one, so i guess the popped corn is stale lol. Oh well lets have the follow up on this bike bro..
Are you sure 
GRUNTMAX
Registered
Thanks for doing the build for me glenn71. (after I stuffed things up the first 3 build attempts to try & get it right). You forgot to mention the high ratio 5th n 6th gears & down 2 teeth on the rear sprocket. Fuel economy is brilliant, if not better than a stocker. Torque city too. No problem sitting on the speed limit in top @ 3200 rpm. I'm not really worried about the numbers. The torque is just brilliant. There is no way I'd go back to riding a stocker on the highway. This is my 4th Busa. The last one was a 270 HP Turbo road bike that got planted into a drunk drivers rear passenger door when she went through a red light & failed to give way. Just lucky I wasn't speeding and lived to tell the tale with a severe traumatic brain injury. No need for a Turbo for the road when one has a bike like this on the highway.
Still & all, I like the idea of a Supercharged Stroker Motor, but won't have time to build it as I'll be busy enjoying my riding too much from now on.
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