http://www2.towerhobbies.com/cgi-bin...?&I=LXFKR4&P=7

tryn to c if this will fit a .18 taiwan engine(volcano sv), if so is it worth it? thanks, and ne air filter and holder replacemet suggestions?

impossible to say without know what engine that head is for. Many commercial heads will fit the .18. If you find a head for an .18 with the same bolt configuration. ie. 4 or 6 bolts, it should fit. But its a gamble unless you know for sure it fits.

Only way to find out is buy it, someone has to take the first leaps in finding out what will fit and what won't. If it doesn't fit then maybe you can sell it on Ebay and recoupe some of the money you lost.

yeah its a bit hit & miss. But I have discovered that most heads of similar sized engines are interchangable depending on the bolt configuartion. The inifinity .27 for instance is the same size as the Sirio monster block. I know that one for sure.

hmm, im tempted to just order it, but are there any that you do know will work?

HPI .15 and .18, also the stock head will work we have some if you want to go back to the stock head.