barry68v10
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Mick,
Most configs of this engine (lancer's setup doesn't really count here) have a HP peak at 5400 RPMs (based on cam profile, compression ratio, stroke length and stroke/rod ratio, and spark curve profile.) At 80 MPH you're really close to the peak, and if you go faster, the HP actually drops off as torque plummets to the 6500 RPM redline. With a stock HP around 30, roughly 85 MPH is where the amount of drag on a stock bike with a typical rider is bleeding about 30 HP. Wind resistance increases EXPONENTIALLY as speed increases. For example, your motorcycle (and your car for that matter) requires TWICE as much HP to travel 65 MPH as it needs to maintain 55 MPH. The only 2 ways known to man to increase top-speed are:
#1 - reduce drag #2 - increase HP
And #1 is more important than #2 for the above reasons.
(Gearing changes are really #2 when you think about it, your just changing the speed where you hit peak HP.)
You are increasing your HP with the mods, but not likely much above 5000 RPMs. Remember, with a 3.7 inch stroke, piston speed on an LS650 is greater than some 600 cc 4-bangers at 12000+ RPMs.
A shorter stroke would give more RPM range to play with but would decrease torque. Another consideration is the cam duration and lift, which is setup for 5500 RPMs and below. A more radical cam, increased compression ratio, and altered spark advance would help RPMs as long as the rest of the components can withstand the punishment, but your idle and low-end would REALLY suffer.
Bottom line: can a Savage hit 100 MPH, sure...but not in anything resembling a stock configuration. If speed is your goal, you need more cylinders or lots of mods and taller gearing IMHO. If you want to hit the 100 MPH mark, go buy a bone-stock Kawasaki EX-500 and you're there, and probably for less $ than it would take for the Savage.
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petc0ck mod, white spacer removed, 150 main jet, 12.5" shocks, 16" turnout muff, oil cooler mod, chain conversion, Tkat brace, external fuel filter, fuel screen removed...
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