Originally Posted by rcpanama
the conditions we have in Panama, are the following
Temperature 32º C
Humidity 85% to 92%
Sea Level from 10m to 52m
Indepedently to Uriah's advice on tuning your engine, this is what you need to know about chosssing the correct glow plug....
Turbo Glow Plugs where designed to give more performance to an engine, for the following reasons:
•It forms an uninterrupted combustion chamber.
•The advantage of better heat transfer or heat dissipation, and a leak proof seal, generated by the conical seat of the plug.
•Greater choice of thermal ranges, that allow for a more precise tuning according to variations in weather conditions (temperature, humidity, altitude, barometric pressure, etc.).
The numbers and characters on the plugs, are the product number, wire thickness, and thermal range of the plug’s body. Example:
The Novarossi C7TG (F) or (C)
Product: C (Conical)
Wire Thickness: 7
Plug Type: T (Turbo)
Thermal Range: F (Fredda = Cold) C (Calda = Hot)
The plugs with cold thermal range F (Fredda), have a body with thinner walls and shorter body, so they dissipate heat better and faster to the engine head. The plugs with hot thermal range C (Calda), have a body with thicker walls and longer body, so they retain heat and dissipate heat slower to the engine head. The number of threads is the same on both types of plugs.
How to select the proper plug:
•When the ambient temperature is high, we have to use a plug with thicker wire.
•With higher compression, we have to use a plug with thicker wire.
•Humidity determines if we use a Cold (F) thermal range, or Hot (C) thermal range.
•With high humidity percentage we should use a Hot (C) thermal range plug.
•If we have high temperature and high humidity, we should use a plug with thick wire and a Hot(C) thermal range.
So with up to 20% Nitro you are OK with #5 or 6 plugs, but from 25 to 30% nitro is best you go with #7 or even #8.
Now since you have such a high temp high humidity environment, you should go with C (hot) thermal range type of plug. C7TGC or C8TGC plugs.
Hope this helps