Hello guys,

just wanted to open this thread in order to share opinions on XXXV .12 engines from Sirio ...

cya !

Great! Was thinking to buy that engine for next season!

first we must see what diff it has from the previous xxx model.only a diff case?does it make that noticed diff that make us buy it than the older and less expensive model?

Rock solid engine durable con rod and incredible speed! But the cuberator is pc of sxxx~

Carburator ? ... so you are using a non-sirio one ?

The new crankcase is stiffer than the old one and has a slightly smaller volume = faster gas movement and higher internal pressure.

Awesome engine, IMO the best .12 out there and I also never had any probs with the carbs.

Nova carbs do fit though.

I'm looking to buy the new XXXV. I'm wondering if there are any performances differences between the Sirio 2611 and 2653 pipe? Also I want to buy an extra con rod with the motor. Are the XXX piston sleeve and rod the same as the XXXV set? Thanks in advance.

Is this the engine you guys are talking about?
http://www.rc-mushroom.com/product_i...ducts_id=20023

Yes this one.

that looks like the older one xxx not the xxxv but the older one was a very good motor also and that not bad price with the pipe.

Might just be an old picture. I thought the XXXVK is the latest sirio sedan engine.

after Picco made Torque for 2011, Sirio is probably the last one great cheap engine on the market now.

yes that must be old picture but they had vk seperate from the xxx it is very fast motor unfortunately my carb slip out in a race and wore my piston out my bad must not have tighten it enough

yes, i hope sirio out with new model this year. already using sirio xxx & xxxvk around 3 year. cheap engine with great power & fuel consumtion. last 2 race i tried novarossi, i give me headache about fuel. now come back to sirio.

there is already a new model that is called xxx nemesis.

http://sacmodelismo.com/product_info...oducts_id=2553