Congratulations, welcome aboard Sirio's world.
You are right, just take your time and do it right, and you won't have problems, and if you do I'm here to give you adviceThakks for the compliments.
By the way, what fuel are you going to use??? I use Byrons 20%, very good fuel.
AFM

afm, perhaps the reliability of your Sirio engine has got to do with it being ABC instead of AAC? The engines that Fura Fura mentioned failing... Are they ABC or AAC?

So if one were to get the 5 port EVO II engine, which one now? ABC or AAC?

Good question "D" Something to ask Fura Fura when he answers some questions I've asked him a couple of posts back.

Any way, when I asked my contacts in Spain before buyin my engine about which one to get, they said to me to stick with ABC, that AAC was not being used by official drivers at the European Champinoship last year in Portugal, and that for the Pre Worlds in Brasil official drivers were going to use ABC, and they did, and won. That told me it was best to stay with proven technolgy, and let somebody else be "guinea pig". My decision has proven me right.
Got the official time results from this Sunday's race and the winner U$ 340.00 RB Rody Tuned engine stablished new track record at 24.045 secs, and I made second best time with my $200.00 Sirio Evo2 AFM Modified at 24.077 secs. That's only .032 secs. difference, which I admit is because he is a better driver than me, he has a Kyosho Evo, and I have an old Yokomo GT4

I think Sirio engines, properly tuned can give you exelent run for your money.

AFM

I am currently running the new EVO2 AAC and the engine powerband is good and run well. You may have to drop the pinon a little as the engine have good rev. I have been running Sirio AAC (the first genration) and they seem to last longer and run better than my buddy Sirio ABC. How long the engine last and perform really depend on how the engine is break in, tuned and geared.

all i can tell is that im really angry that i spent my U$$200 on Evo2 and they are like 2year old compression.... with only 1 race!!!!!!! and yes... we use only ABC ..piston and sleeve...

Fura Fura,
Have you contacted Andrea Rossi from Sirio???
You can access Sirio's web page and under "contact", send him an e-mail explaining the whole problem, detailing your break-in process, fuel used, settings, temperature while braking-in, during race, were you bought the engines, a serial number from the box or engine (if any) etc.etc.
He always answers all mails and gives great support.
I'm sure there's got to be an explanation to what happened to you guys. It is not normal for any brand of engine to wear out after 1 race, if properly broke-in and tuned.
AFM

so do the evo 2's come in the aac or abc sleeves?

From what you see at Sirio's web site, seems they are only working with ABC now, but they use to make AAC engines in the past, but haven't seen one on the Evo2 series.

Check it out here

www.star-motor.com

AFM

Yes, the EVO2 5 ports have both ABC and AAC, I am currently running the AAC version in my FW05R, I have run about 3/4 gallon on it and the engine still feel tight at TDC when cold. My last AAC still feel tight after 4-5 races (with average runtime of at least 90 mins per race), Temperature after 45 mins main is about 120-130 deg.

which is more durable and isnt that a very low temp for a motor to run at?

He is talking about Centigrades on temp.

Good question on durability, and may I add performance between AAC and ABC Evo2's. Who has the answer having raced both????

AFM

Anybody have problems with the Sirio .12 engines rod? Mine lasted less than 10 tanks!!!!!

Yes; mine lasted just as long!

Hmmm with all this talk with the sirio conrods.. I am starting to wonder, my bushing wore fast, I blamed it on being too lean but maybe it was the engine?!!?

My Sirio had over a gallon thru it with no problems...