RE: Tower .46 engine - to try or not to try?
Check out the thread I started here. Lots of info posted as most of it applies to the GMS .47 as well (other than Tower's not have a misaligned fuel inlet from what I've heard).
[link=http://www.rcuniverse.com/forum/m_9429910/tm.htm]http://www.rcuniverse.com/forum/m_9429910/tm.htm[/link]
I just finished breaking in a new GMS .47 and so far I'm very impressed. Do know that i fully seal all my engines however. I'm going to do some rpm testing after modding the sleeve and timing soon as well.