Dave wrote
>basically it says without the other info how could anyone make an honest
>estimate of a correct or at least reasoble response. Yes tell more and i
>would be glad to share things that have gone well for me as well as the
>ones
>that have not gone well.
>Dave
Motor is a Suzuki Hayabusa 4 cylinder 1300cc dohc bore 81mm stroke 63mm
Cams - Yoshimura stage 1 inlet max lift 9mm, LC 102 deg, duration 244 deg/
exhaust max lift 7.8mm, LC 105 deg , duration 230 deg
Head- valves 1mm oversize in=34mm ex = 28.5mm ferreca S/S, extensive head
work ports and valve seats ,flow test summary test pressure + 10"
valve lift mm
Inlet 2 4 6 8
10
std v=33 / t=29 36.1 72.3 101.9 122.7 131.6
mod v= 34/t= 29.5 38.6 79.2 111.8 134.3 144.5
all in CFM
exhaust
std v=27.5 / t=24 31.5 58 77.3 85.9
90.7
mod v= 28.5/ t=24.6 36.4 67.1 88.7 97.2 102.5
valve gear - dOHC shim/bucket tappets , heavy duty springs ( 2 springs per
valve ) Ti valve retainers
RPM range max = 11000 max torque @ 7200
Bottom end crank magna fluxed ok, dymanic ballance , micro polished,
bearings shell type high volume oil pump , 100psi max , carrillo H beam
rods ( bullet proof crank ,these have withstood 700+ HP )
pistons - JE forged 8.5:1 at present bore is 2 thou over stock extra
clearance
aftermarket ECU Autronic SM4 high energy ignition 4 X 0.7 ohm coils
multipoint EFI
hope this is enough to start with
Gary
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