I bought mine witht the Speedstar Stage IV kit and 45mm carb. Have never had it dynoed, seems like the power never stops. 38-42mpg is all I can eek out though. I would never had spent the amount of money on it if I had to build, probably done the BAK, 42mm, and 31 tooth pulley and got it close enough.

Hey ultrastar,

Just a question, how is the mechanical noise level on your bike before and after the mods, especially the pistons? Did your bike have the "knock" before and does it still do it or is it louder or quieter? Just wondering and looking for clues about what the noise is.

Thanks,

MS07

Pig 116,
I have the same set up as you, love it but do you get some backfire on hard decel?

We've had some good feedback.

How do I get my scoot dyno'd? What type of shop do I look for and how much would it cost?

I'd like to know what I have before I hope to get what I already may have.

You just have to let your fingers do the walking. a lot of sport bike and Harley repair shops have them just look through the adds for dyno testing

Bump

Has anyone else made engine mods???

I have the next goodies on board:

Speedstar cilinderheads
104 mm bigbore (omega pistons) 11.5:1
PAtrick Racing cams and valvesprings
ported intake manifold
mikuni HSR-42
dynatek 3000
propipe
31 tooth front pulley
barnett clutch withe heavy clutch springs
carillo rods

I have stripped down the bike to 220 kilograms and now it is a hell of a ride...

I have done the mods in three years, the fist thing I had done was the bigbore, carrillo rods and the dynatek 3000 together with the propipe.
For street use this seems to me the best thing. (it pulls 88 horses and 170 NM of torque)and pulls very good at low rpm's

Now I have all the goodies on it (cams, HSR42, Cilinderheads) the bike is very fast (no problem to leave a M109r in the dust)
I needed the 31 toth frontpulley because the bike pings a litle at low rpm, pullingpower is strong beyond 2500 rpm to 5500 rpm and will only run on premiumgas (in Holland we have 98 octane)
The bike pulls out 108 HP and 210 NM of torque.



I love the bike the way it is, but if you want a bike for every day use, get the bigbore a good exhaust the dynatek 3000 and a warriorclutchspring and love it.. (that is what I think of it)

Read the Techniacal Article on this site about: Going Full Bore, it helps me a lot...

If you go for high compressionpistons/bigbore you need bigger starterwires or even better (and more expensive) the warriorstartengine


Gerben