Originally posted by afm
Well be sure which rules, because IFMAR and EFRA are different. If you are sure it's EFRA rules you are playing with, you won't find these engines in the USA, you must search in Europe.
USA goes by ROAR rules which are similar to IFMAR.
What are the differences in engine technical specifications between IFMAR and EFRA?
I know ROAR pretty much allows any nitro content but eveything else is the same as IFMAR isn't it?
If you wan't a Sirio or Collari EFRA, I bought mine in Spain at Modelcar (no web site) you can call Carlos Ducay at
(34) 627-416131, he'll gladly help you. Don't forget to use Sirio's own pipe, it's the best for these engines.
AFM
Thanks for this info, appreciate it!