HI Huston.

The problem with Nitrothane is not the fuel itself. I have had that happend also with Tornado, Byron, Mecca fuel. Only with Tornado myself but helped other people with the same problem.

The problem in all three cases is that the engine have been to lean on bottom end so the enigine temps get high. Then, the HSN is very rich and when you open the throttle to get some revs on the engine, fuel is gumming up and locks the piston. It is a really pain in the a.. to get them back up because th episton is so stuck i have used a wisegrip plier to get the piston unstuck. I have then changed the conrod just to be safe.

The last engine i did run in, i ran in on Nitrothane. It was an OS V-spec and usually they have been loosening up between 2 and 2.5 liters. Wit hNitrothane i did almoast 3,5 liters before it loosend up and still even ha a slight pinch. It runs cooler with Nitrothane than Sidewinder and Werks and i get better runtime.


Anders, Norway.