Aluminum isulator blocks are used on r/c boat engines with teflon gaskets,between the block and engine and one between the block and carb.Should work on any engine.I don't know if the ones for the Zenoah engines would work,but they all use Walbro carbs. Maybe find a sourse for Teflon gasket material. http://www.cc-racingengines.com/inde...mart&Itemid=53