Hi guys/girls

I have a GS STORM with the standard gs 21 engine and am looking to buy a new one for it but thier are two engines that i am looking at which are the HYPER 21 and the SIRIO 21 and i just wounderd whether anyone could tell me which is the better out of the two???
Thanks peep's

Definetly go by the sirio.
Nova Rossi and Picco are the only serious .21 engine builders. The rest is bollox
JP, Sirio, KHM, R&B, Collari, Paris, MAX, NovaMega, Omega and so on and so on, all use engines based on nova rossi or picco; that is for a reason! these two are simply the best micro engine builders in the world. I own a FC power blablabla .21 it is almost the same as the hyper you are looking at. It is fast and reliable, but it is but a breeze comparred to anything based on a nova rossi or picco. I also own a novamega, a mega, and a RB these all are in a class of their own, extremely fast and powerfull. But in all fairness; if you are not using it on a race track or some sort of competition, dont bother buying one. too expensive and too much maintenance. Maybe it be cool to say to yer friends * hey I own a rossi .21 megaturbohyperboostersuperflowousblabla* but their extra power is only intresting when mere splits of seconds count.
If you are just using it in your backyard or racing on a parkinglot against yor friend, good driving skills will beat them anytime, even with an ofna, hyper, or lousy OS engine, and for only a fraction of the cost. It about fun in the first place!!!
(remember that the .21 class is THe most expensive class for competition engines, and that costs of engines has gone way out of hand. 1/8 gasonroad as a class almost died in europe because of this. A US collum writer once said if you dont have the latest in specialy tuned .21 engines you might as well stay home. It is a serious problem to 1/8 scale racers!)

Look at availebility of spares in your region and what they cost, this is far more important.

Oh, and never believe anything about mentioned HP or RPMs, 99% is bull, and there is no international standard of measuring this. Nothing can be told by these figures.
RB stopped pblising anything about performance figures. Why? Cos they suck? No, they are multiple champions! They know what counts...
Choose an engine for its purpose and you ll be fine...

If you have all the money in the world, look at KHM tuned engines or a RB tuned monster or a MAX by world champ fantini...

Thanks for that, That has helped me out loads and you could'nt be more RIGHT about the out of hand priceing of 1/8th engines. It's nice to know that you can go on a great site like this and get help from the brains of the RC WORLD.

Once agine cheers for taking the time.

Forgot to say;
If you are buying a Sirio, but if you are not racing it on a track. Dont buy a Sirio with AAC sleeve. That will spell trouble. In sufficient cooling to these kind of engines will lead to a seize in no time...

What's up man! I have freinds with hyper motor, a and they think they are fast and they run ok, But it depends on how much you want to spend, and how fast wou want to go. I have a sirio 27 pro whinh i put in my mbx5, and that thing os balistically fast. If you get a sirio get that kania model. But if you do that you might as well get a RB which in myopinion is the best. Get a Ws72 and you will not be sorry. I think that is one of the best race engine's. I also but that in my mugen mbx5. The 27 is for when i just drag race but on the track the Ws72 can not be beat