njballa

Anyone know the bore x Stroke on a B3Pro? I wanna see if the measurements are the same or close to the Sirio 3port ...

NitroOB4You

iTrader: (36)

According to AMain's website it is considered a long stroke. I'll post this Q on the SGrid in the Werks thread and see if Ron can give more detailed info. I will reply back...

njballa

Thanks alot buddy I appreciate the help...

Marcus Falconie

iTrader: (1)

Werks 3B

2.4hp @ 34,500rpm

Cylinder Bore: 0.65" (16.48mm)

Stroke: 0.64" (16.3mm)

Crankshaft Bore 0.39" (10mm)

Crankshaft Diameter 0.56" (14.2mm)

great little motor. Put the 7 port carb and TKO Ceramic bearings front and rear and the motor comes to life. 6 1/2 or 7mm carb restrictor gives you over 10min race time and will run with any thing. Most of the New race motors are going back to 3 and 4 port . I also ru the Trinity Phatt head on the motor. The Novarossi one fits

Marcus Falconie

iTrader: (1)

Motor with the 7 port carb and Phatt head

njballa

Thanks a billion, I was wondering if you had tried a turbo button on the this motor? Also will a nova carb make it just as good as the 7 port carb? I see you also mentioned ceramic bearing the newest version of this motor comes with the rear ceramic, Should it still be replaced or with stock ceramics do ?

Marcus Falconie

iTrader: (1)

A Novarossi carb will work even the stock carb will work ok, I just found the 7port carb worked better for me. I just ran STD. plugs the MC9 works good. Sirio stock bearings suck but if you want just change the front one. I could tell the TKO bearings made a huge difference and I have had problems with the stock bearings even in my 08 spec front and rear, but I am sure alot of people have no problem. If you have the motor and want to make it faster this is good stuff, but just to do the things I did to my motor will make your motor cost alot of money but in the end you have a motor that is great. You might want to wait for the new Orion Alpha, its a Sirio 3 port with alot of upgrades, killer motor from what I saw and was told. But you cant go wrong with the Works, and they have the best service in the world.

NitroOB4You

iTrader: (36)

Sorry, not to discredit in any way, but this was Ron's reply to my Q on the Grid...

"16.20mm and stroke is 16.90mm on the B3"

Marcus Falconie

iTrader: (1)

I think Ron thought you were talking about the 7 port. I have both motors the 3 and 7 port and the Sirio 7 port S21 CL7B STI that the 7 port Werks motor is based off of and they are 20-90. The manual on the 3 port gave the specs above. You can go to the Star web site to get the Specs if you want. www.micromotori.com
the Sirio S21 s off road is the same motor as the Werks B3

Marcus Falconie

iTrader: (1)

I found this for you, this is how it is listed in my Manual

njballa

Since the stock bearings should be replaced. The sirio 3 port sounds like a better deal since its the exact same motor without the ceramic bearings,and its about 15 bucks cheaper ...esp if you gonna replace the bearings with TKO.

I think PK once said it was a pretty good little motor, when shimmed and head button replaced.

Just trying to give guys a cheaper option especially in this economy!!!!