How much power can a stock bore&stroke really make?

[Boost13r]

Head work,cams,comp increase,throttle bodies, etc.Being a stocker is so restricted how much power has some of these pro's gotten,no nutec?

[Hank]

turbo'd? over 600 already.

[Boost13r]

Hank this is an all motored thread?Sorry,not every body can afford $10,000 turbos!    And yes if I could I would!

[Indy 1397]

I know MSP has made 191hp with a stock bore std. stroke motor!

[Hank]

quote:Originally posted by Boost13r:
Hank this is an all motored thread?Sorry,not every body can afford $10,000 turbos!     And yes if I could I would!

sorry--my bad--I forgot what catagory I was in.  

[THEMOTORHEAD]

make 185 on almost every motor with just yosh drop ins and short stacks and high lobe centers
add nutec make over 190
bump comp up bigger cams  add head work
over 200 on nutec no problem

[396]

I think the California dynos are calibrated different. We go by corrected numbers also. We can get those numbers but it is not a piece of cake. Maybe you guys just have better air.

[fstbusa]

we don't have the cali smog thats out there...  

[Yngve]

A looooooooooooong time ago we had this question here and I found a dynosheet from 2000 that showed 214rwhp on a stock bore, stock stroke Busa ( Thomas Johansson, Atomic Racing Sweden ).  
Nowadays it should be possible for even more hp. Maybye as much as 230rwhp... but U have to use EVERY trick in the book and a turbo would be much cheaper to build.

[THEMOTORHEAD]

quote:Originally posted by 396:
I think the California dynos are calibrated different. We go by corrected numbers also. We can get those numbers but it is not a piece of cake. Maybe you guys just have better air.

no cal has oxygenated junk gas
no power from it at all  

[Silva]

What kind of price range are you looking at to get throttle bodies bored and headwork?

[DarkFalcon]

quote:Originally posted by Yngve:
A looooooooooooong time ago we had this question here and I found a dynosheet from 2000 that showed 214rwhp on a stock bore, stock stroke Busa ( Thomas Johansson, Atomic Racing Sweden ).  
Nowadays it should be possible for even more hp. Maybye as much as 230rwhp... but U have to use EVERY trick in the book and a turbo would be much cheaper to build.

Other compression, lightening, balancing, blue printing and matching each cylinder, increasing fuel delivery, machining case windows, what secrets remain outside of the transmission?

[Yngve]

Using the right valvesprings ( not to stiff ones ) to your cam.
Using the RIGHT cam ( I am under the feeling that the Hayabusa head flow so much air U really dont need any bigger cam than .380 lift.... unless you REALLY are going for it )
Porting of water and oil passages ( maybye 0,1 hp... but it is still 0,1 hp )
Right fuel.. I spend many hours on the dyno with a "special" fuel only to get more hp out of regular 98 octane ( by "regular" I mean fuel that are sold at EVERY gasstation over here )
Gas porting the WHOLE block.. not just between cylinder 1-2 and 3-4
Right injectors ( Multi hole injectors... )
And when I am over chrismas I write more...

[DarkFalcon]

I agree with you about the cams and you make a good point with respect to injectors.

[Blue By U]

Bumping up comp. and bigger cams what does that cost to have over 200hp and 1 or 2 batteries