The Gen2 1441 build

[BLACKZOOK]

Just flew back into Sydney. I pick the bike up at 5am tomorrow straight onto the ute and up to Pete's, should be there late Saturday night and start the tune Sunday morning.

Talk to Pete if you want to come over and watch.

[Legend]

5am !!!!

Funny 5am, must have been Perth time......

[Legend]

I wont spoil it for Bruce and Pete but I've heard some results from the first gen2 1441 that I've done and all I can say is

And their still not finished .......

The storm is here!

Leonard.

[BLACKZOOK]

Reflashed the ecu and have done 9 trim runs on 100% throttle, nowhere near finished yet and then the part throttle setting to be done. Nearly 40% increase in power and torque so far.

Increible to watch the nose drop on the dyno when the throttle is hit. Rear tyre will be trashed by the time we finish.
I have not been this excited by a bike for years.

[big kev]

congrats bruce

[TheShredder]

So whats the figures outcome Bruce
You ridden it yet ? how is it?

[simmo]

That things flys 4th gear & lifting, I want one NOW

[Legend]

I'll be free early in the newyear, one more to do before then. Let me know!

Leonard.

[BLACKZOOK]

The numbers
As many of you already know a dyno readout numbers are only useful as a comparison of before and after a mod power improvements. Some here have posted silly horse power numbers achieved on very happy dynos. Comparing one dyno to another is pointless.

Pete form Pete's Pitstop spent 2 days mapping the 1441 to get the airfuel ratio at part and full thottle correct. Mapping was done by reflashing the stock ECU ie no powercommander.

Below are the results along with readouts for his gen 2 and his old gen 1.

My bike with Pete's own gen 2 shown for comparison



As you can see the power curve is smoth and linear, torque is flat with an incredible spread of power over a wide rev range.

My bike again with Pete's gen 2 (yoshi full system and filter mapped) overlaid and his old gen 1 (yoshi full system and filter mapped).



Pete's gen 1 and gen 2 have been mapped to perfection as you would expect from a guy that owns his own bike shop with dyno. All of these numbers are comparitively low as no fudge factors were added in to appease the paying public. The numbers are what they are but the interesting thing is the comparison.

The 1441 with cams and head work has a beautiful power band with a flat torque curve, it has more torque at 4800 that a piped and tuned gen 1 achieves at its peak. It has over 130ft lb from 6000 to 9000 revs.

Peak numbers are
124hp at a real 10,000rpm (tacho shows 12,000)
Peak torque 134ft lb's

The curve for the 1441 shows more power and torque at all revs over the tuned gen 1 and 2 even with it's big cams.

Im very happy with the results. To those that have printouts showing stupid numbers I'm happy to compare both bikes same dyno same day.

Thank you Shane from Cyanide Racing for great service in supplying all of the parts.

Thank you Leonard for your incredible work building the motor, fantastic job your attention to detail and knowledge have resulted in a beautiful bike.

Thank you Pete this thing is so well tuned it runs like a stock bike. Beautiful work.

An important lession here folks find the best, listen to their advice and pay a fair price for the work.

Video of the bike on the dyno to follow.

[NEMESIS]

What a monster!
Im envious!

Hope you get enough time to enjoy it!

Its making enough torque to pull a sailor of yer sister!

Looking forward to the vid!

[Legend]

Thanks Bruce, glad I could be part of your project!,

I also learn't a bit about the differences between the Gen2's and gen1's engine wise, most of the changes are hard to see but once you measure and compare parts the reason for the increase in hp from a gen1 to a gen 2 become obvious.

When I set the comp. ratio for Bruces motor we discussed how far we were going to go with it, Bruce maintained he didn't want a highly strung motor and wanted to run pump fuel, being able to do another lap of the country was on the cards as well! In the end I set it up a little bit higher than we first decided, figuring the bigger cams would reduce the static comp. ratio.

I still believe theres still a bit more in it yet, once it done a few k's we'll revist the idea of upping the comp. ratio futher and maybe some cam retiming.

Leonard.

[Resn8]

Leonard if you don't mind me asking, what does a build like that cost all up.

[pan]

Bruce, I will volunteer my time and efforts to test it at Eastern Creek track for you... just let me know...

No thanks needed. It's just what mates do

[bigfoot]

so only 124hp??? i'm confused u sure its not 224?? great work tho can't wait to see the vid and the feature in rapid!!!

[abusa]

Thanks Bruce for the mention and letting me assist you with your project.
Leonard and Pete did the hard stuff! Happy motoring!!