I am getting an engine for my new xxxnt adam drake. I was looking into mt12, ostr12, or sirio .12 standard reacing engine.
I think I will get Trinity Sirio .12 Standard Racing Engine. does this engine will fit into xxxnt? thanks
I run the Siro .15 in my xxxnt, and it will run power wheelies all the way down the back straight. It takes awhile for the motor to fully break in but when it is on the motor is hard to beat. Just my 2 cents
He's talking .12 not .15 but yes the siro's are good but for some reason the front bearing from the factory kinda suck. I just spend an extra $10 and get a boca bearing and call it a day then I have the best of everything
Most of the ones I have had problems with had a gallon or 2 on them. They just seem to start leaking and once that happens you have a problem. I have found that the boca bearings will go 7-8 gallons before a problem and like I said they are cheap so I just do it right away. The way I figure it is once it leaks out then air can get sucked in and then the needles become much more touchy and damage can occur.