1507cc

[Goo'Roo]

First post..greatings to everybody from Italy.
I just smashed my 99 busa under a car in a harpin and searching for the stuff to put it back my bike I started to read this great forum.
After 10 days recovering from the crash and reading I haven't sort out a couple of things.
We have a total different approach in Italy to tune engines, and one of the first things I thought was to change the airbox with a better shaped and bigger one, but I just found the one of the airtech

that has to be modified anyway to use on street due to the lack of airfilter.
Does somebody have another solution, I mean, does another airbox exist, or has somebody tried it?
Then, I've seen Carpenter airscoops, and I wondered that no one thought to use both holes, airbox and turn signals, and put bigger scoops (even loosing in areodynamic) with bigger air ducts to the airbox to increase the air pressure. Any Idea? Would be weird to see those big scoops, but maybe done with carbon even "different". 

Then, I'm using my bike just for fast street riding (we have lovely mountain passes.. ), and some track-days, and I need more power but with lots of torque spread all aver the rev range.
I thought to use a +4mm pistons (compression has not to be to high, I don't want to carry another battery) and a +5mm APE crank to reach 1507cc, but reading and reading, I got a bit confused with head porting,cams ecc.
I'd like to read 215-220cv at the wheel..now
I don't know if
-standard conrods would cope
-that APE crank is strong enough (I won't use nitrous)
-which kind of work should be done to the head except porting (I mean, do I need bigger valves, which cams for a fat 5-10000rev range torque)
-do I need bigger throttle bodies
-except TI-Force sumo,does another complete exhaust exsist for bigger engines (I have a stainless Muzzy for now)
-bigger injectors?
-is a PC3 USB enough to give all that fuel?

Can somebody help me in building a bloody street 'Busa? 

[SPARKY1397R]

that big of a motor will not be street friendly.  and i've seen mixed results with those power scoops,  george C had negative results with them. 

while some may thing bigger is better for the air intake system,  some will argue velocity is the key.  and sacrificing the frontal aerodynamics of the bike for a possible 2-3hp isnt worth it up top.   

your best bet would be a 1397 kit,  small box mod, power commander,  and a nice full exhaust.  that'll get you 200rwhp,  and up to 215rwhp with head work and cams. 

[Goo'Roo]

Why not street friendly? Too much torque?

[SPARKY1397R]

Why not street friendly? Too much torque?

overheating,  and the way it would run in general.

1397 sounds like exactly what you want.

[Goo'Roo]

Right I've understood. A superbike-style bigger radiator? Has somebody tried it? Just 'cause I think the stock one is just too small.
I'd like to know which radiator was mounted in the Yoshimura X1..

[lowrider]

IF YUR LOOKING FOR A NICE EVEN TORQUE CURVE. TALK TO THE people who make the cams and they can help u on that. and for street power remember the bigger u go in power the more u have to work on them reliability becomes a problem. and thats with any hot rod bike or car.

[Goo'Roo]

I thought a bigger-better oil pump, bigger radiator and not extreme compression (11,5:1),revs limited to the stock value would help reliability..don't you think?

What about the airbox...the original is harsh..
 

[busa200]

there are reliable 1507 strokers out there running up and down the streets. i should know... i've got one. built by daveO 238 HP 130 FT LBS.
johnny  cheese has built a few that run around on the streets to. cant anybody just build motors like that. theres lots of engine builders out there, theres just not alot that are really good at it.

[lowrider]

yes high flow oil pump and some have electric water pumps u can install twin fans and larger water and oil cooler and yes a 1500 cc motor will work an the street. but again find a good shop with a good record and pic there brain. what may work over here might not work over there. even here it varies state to state. look in to superchargers i doing one an my bike this winter cuz i like riding in the hills and love torque and speed but also like dependability.

[Goo'Roo]

Yep.. the other solution I had in mind was to bore it to 1396 not to loose low down torque due to the decrease of compression and call TTS for their rotrex kit..but I was skeptical even if I don't really know the reasons, actually.

[OldGsxPilot]

there are reliable 1507 strokers out there running up and down the streets. i should know... i've got one. built by daveO 238 HP 130 FT LBS.
johnny  cheese has built a few that run around on the streets to. cant anybody just build motors like that. theres lots of engine builders out there, theres just not alot that are really good at it.

Jeese Charlie, where have you been ? Anyways yea, you & Dave are the first ones that come to mind with 5mm strokers that can run all day long. Dave should chime in here. I think he has two seasons of road riding and Maxton’s events without a hic-up right.. Anyways, Me & Jim missed you terribly at Maxton last month,tried calling your cell on the way home... are you coming for the 28th/29th ?

Shaun

[busa200]

shaun,
         i was really disappointed in not getting to see you guys again. i am in colorado and have been working 6 and 7 days a week, 14 hours a day. i am going to texas to run in 2 weeks, its alot closer, but come april i will hopefully see all of you guys at maxton. (sorry didnt mean to hijack this post). heard you might be building something stroked.

[lowrider]

like they say if you dont like the size stroke it.

[$paz Racing]

We can do 1397s with 215 on pump gas 225 on race gas. I would stay with the 1397 unless U are using it for a all track bike.

[busa200]

We can do 1397s with 215 on pump gas 225 on race gas. I would stay with the 1397 unless U are using it for a all track bike.

he says that because most builders like spaz cant build a stroker that will live. get a pro like daveO or johhny cheese if you want a stroker that will live period.

[$paz Racing]

Busa 200, U wanna bet on that! We build stroker's all the time min. of one a month! How many do U build a year. It's easy 2 talk shit behind a key board. But U don't see any of my engines blowing up! Do U

[M Wright]

Another option is to go with a larger billet crank.  Their made over there on your side of the pond.  We've had almost rediculious results with two of the 8.25mm cranks living.  When thing have been done to it I have no doubt would kill a stock crank.  If your pocket book can swing it they make huge power and are very stout cranks.  Just find an experienced engine builder to assemble it.  Otherwise I agree with most.  1397's are great street engines. 

[busa200]

i dont build engines i build hi rises. for somebody who seems to have so much drama about there engines (pos from what i hear) and really arent you just an assembler. so lets hear about all of your stroker motors running around on the streets.

[busa200]

and yes i have heard about your motors blowing up.

[$paz Racing]

and yes i have heard about your motors blowing up.

Nice try but BULLSHIT!

[Jay]

We can do 1397s with 215 on pump gas 225 on race gas. I would stay with the 1397 unless U are using it for a all track bike.

Oh yeah.... Just see how long it takes for you to get your stroker now pal.
 

Jay

[Goo'Roo]

ok guys..back to the main topic 

Has somebody tried a different airbox than the stock (even modified) one?
Does the Ape +5mm crank last to 220-230hp?
Do I need stronger conrods for that power and close to 11k revs?

[$paz Racing]

I use the factory air box just modify it. Carrillos rods, rod angle is a little hard on stockers. If U stroke it might as well go with a 6.25 as a 5 mill no difference in longevity but if U go with a 5mill U can install a 93-98 gixxer 1100 rod and no spacer. This hides evey thing from praying eyes. I will be a touch down on power though. Modifiy the oiling system though. It's all over the counter parts 2 Don't listen 2 no one about modding ur cases because it's BOGUS

[busa200]

goo'roo, you might want to do some searches throughout this forum and find out who has done what with a stroker motor. i can tell you this ..the worlds fastest n/a stroker has modified  cases, and the results speak for themselves. and if he were to build you a 1507 he would modify your cases. and theres some really good reasons why he does that, but thats what separates the really good builders from the rest.

[DaveO]

Don't listen 2 no one about modding ur cases because it's BOGUS

Your right spaz you shouldn't care that the #1&2 main/rods share the SAME oiling feed(with the oil jet for the stator also), and the rest have there OWN dedicated feeds....

Your right most busas don't spin the #1 or #2 rod brgs....LOL

Honestly, I thought you had learned and were smarter than that.....and there is more to the case mod that you DON"T know.....

So lets be honest about what we do and don't know....instead of being defensive.....I am not on here BASHING your shit....am I?

Dave