that would be me who did the back plate conversion........ beleive it or not the aqua is a really strong engine,,,,, ive had amazing results with them in the sv-27's........ i found they can spin a octura x440/3 with no problem....they are very versital when it comes to fuel,,,,they will run on 10%,,,,,,all the way up to 60%...... port configurations and the short stroke make it quite the power house for a little guy....cv-rm is no longer produced,,,but i cant imagine that there will be a parts shortage any time soon.....the cv-rm has a different stroke so they make a little more power,,,,,but with proper tune and set up,,,these aqua's rip.....saw speeds of 42 mph on the sv with 60% fuel and a prop......since, i have put a andy brown pipe on it and did the back plate modification so i could start it with a belt instead of the pullstart....no reason i shouldnt see 46 mph or better out of this $260.00 rtr sv-27..... in my eyes these aqua .18's will get the job done,,,,,parts are very cheap,,,, and so far it has taken quite the beating from me and still in mint inside the engine,,,,nice tight spot at the top.....key i think is when they shut down,,, you should rotate the crank so the piston is at the bottom of the sleeve,,,,then let it cool.....keeps the engines alive alot longer....my engine has seen just about a gal. of 60% with no failures of any sort...... but if your looking to swap out,,,,the cv-rm is a good choice..... terminator (terry) could hook you up with a cv-rm just get ahold of him.....think he has like 4 brand new ones
alden
Greg
