Taurean, this is Pooh give me a holla.

Thanks Chris, I will get one from you sometime this winter. I am going to try running 25% to get the better milage next year.

So its officially the beginning of November. Any word on the arrival of this engine?

I just got a b01a today, anyone know the difference from a b01? its suspose to be the latest version but i dont know, also i want to run 30% should i use both shims that came extra with the motor? thanks paul

Does anybody is running with R01-21? Want to share experience?
durability, performance, issues

the motor is great. no problems to report. it is a lil soft coming out of corner, but the way it rev's, the mid-range to top is sick. I must admit though, I am running a Murnan Mod Ninja.

With the a spec they revised/refined the coating, hardening and materials list. Supposedly no change in performance, just an increased reliability.

I've had 2 MR r-01 21. The first the block leaks and it's got a high diet of plugs and bearing. The second is an absolute dream to tune, has plenty of power, and is a top motor. Just go figure.

I wonder if your the only one? The tcs ring,(plastic ring around the carb neck) is it cracked?

If your referring to No.1 engine MugenDrew. Your assumpation is correct. Yes the TCS ring is cracked. I've had guys with decades of experience have a look at it and the bottom line is it leaks around the block near where the burn room goes. So be it then. I'm not that worried about it. No. 2 engine so far it's as good and reliable as any Nova I've had.

How do you know if you have a new ninja.

If your referring to the A spec; On the head printing there will be an A at the end MR21-01A, same on the label that's visible through the box.

Ninja's just finnished one and two in the RC Pro series national championship for onroad! They ran strong, right their with everyone else! Very good engines!

anybody know whats the size of the front and rear bearing of the RO1?

I guess the T01 is not coming out til next year. I swore someone said they heard from the source it was goin to be late October early November.