Help with hot (but reliable) engine
All,
I have a HSP 1/10 with the .18 vertex engine. I know its an ebay special but its been good to me. Meant to get me into the hobby and 6 years and many gallons later its still going strong. Truck is great, however, I cannot get the engine to reliably run below 250-270. I'm running Byron 25%/8% fuel/oil (was doing the same thing on 20%), #4 plug and i cannot make this thing any richer. Low speed needle seems to have good response. What am I doing wrong? Idle's great, starts right up. I'm pretty convinced this really isn't an issue since its been doing it all its life but just wanted to make sure I'm not getting lucky here. Blasting down the street i will see temps as high as 320 temporarily. Again, no issues yet, but I've always thought this wasn't right. Tried everything.
Thanks!