I kinda definitely want a supercharged bike after the quick blast it took on this....
Supercharged B-king Build
- Thread starter Boosted Cycle Perf
- Start date
Gentlemen, for your viewing pleasure....
very nice. love the sound. SC is quieter than I expected. on alot of cars thats all you hear!
The rotrex blowers are designed to be quiet, and that they are.
Jake whitebird
Registered
What was final cost, mods and hp?
I’m not a liberty to say what the cost was. HP was 260, and it’s a stock engine with a base spacer, stainless valves, and hd springs.
Jake whitebird
Registered
Now some videos of the driveability!!
They’re coming soon.
The bypass valve supplied with the kit is too small. Has a 20mm valve in it. So part throttle around 6k rpm it flutters causing the bike to jump back and forth between boost and vacuum. Well the ecu tries to adjust accordingly but it can’t, so the bike shutters real bad.
I’m putting a 38mm valve on it and that should cure the problem.
Here’s some pics of the process of modding the plenum. I cut out the valve that acts like a wastegate as it was cranked shut anyways.
But the new valve is on, and took it for a test ride. The fluttering problem is now fixed, however I need to put it back on the dyno to tweak the tune. The new valve flows so much air that now in areas where the ecu was starting to see a little boost, doesn’t anymore so the throttle response is a little muddy in some spots now. No big deal, I was expecting to have to do that anyways.
But the new valve is on, and took it for a test ride. The fluttering problem is now fixed, however I need to put it back on the dyno to tweak the tune. The new valve flows so much air that now in areas where the ecu was starting to see a little boost, doesn’t anymore so the throttle response is a little muddy in some spots now. No big deal, I was expecting to have to do that anyways.
Just noticed some pics posted out of order. Oh well.
Nice looking bike! Funny but this might be closer to the Gen 3 configuration than anything engine wise.
I hope we never see a blower on a hayabusa from factory.
The owner was in town, so he swung by to check out the bike, and even took it for a little ride. He came back with all smiles.
He did also give us the green light to change the gearing per my suggestions from 18/48 to 18/45. We are also installing a progressive methanol injection kit, and changing the pully to get some more power out of it.
I’m suspecting a serious power increase from the methanol kit alone. Blowers by nature produce extremely high intake temps. This being non innercooled I had to combat that in the tune by pulling timing, and keeping an overly fat afr ratio (10.5afr) which puts a big damper on power output.
With the meth kit, in theory just from the intake temp drop alone it should pick up substantially. But then factor in being able to lean it out a bit, and put more timing back in it, it should really come to life.
I also made a nice little mount for the AEM failsafe gauge.
I’m happy to repor with the 45 tooth sprocket, it REALLY woke the bike up. It pulls way harder now, and we can now run 80mph without the exhaust screaming. It was turning around 5800rpm before.
He did also give us the green light to change the gearing per my suggestions from 18/48 to 18/45. We are also installing a progressive methanol injection kit, and changing the pully to get some more power out of it.
I’m suspecting a serious power increase from the methanol kit alone. Blowers by nature produce extremely high intake temps. This being non innercooled I had to combat that in the tune by pulling timing, and keeping an overly fat afr ratio (10.5afr) which puts a big damper on power output.
With the meth kit, in theory just from the intake temp drop alone it should pick up substantially. But then factor in being able to lean it out a bit, and put more timing back in it, it should really come to life.
I also made a nice little mount for the AEM failsafe gauge.
I’m happy to repor with the 45 tooth sprocket, it REALLY woke the bike up. It pulls way harder now, and we can now run 80mph without the exhaust screaming. It was turning around 5800rpm before.
busakiller
Registered
I will take one of these.... must be a blast to ride
Nice work with the heli-arc.
My dyno guy says the same thing about tuning H2's that he has to run them pretty fat to be on the safe side.
You could do this https://www.extremecreations.com.au/kawasaki-h2-intercooler-kit
Unless the exchange rate is $0.25 US for every $1.00 AUS I won't be buying one too soon.
My dyno guy says the same thing about tuning H2's that he has to run them pretty fat to be on the safe side.
You could do this https://www.extremecreations.com.au/kawasaki-h2-intercooler-kit
Unless the exchange rate is $0.25 US for every $1.00 AUS I won't be buying one too soon.
ali123
Banned
did u get ure fancy dancy girly wheels?
Still deciding what to get. Lot's of choices and things to consider. It's hard to find a good wheel in "I'm scared of Turbos pink"!
ali123
Banned
if u get BSTs......
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