MUD/ OVERHEAT MAP

WoodsRacer wrote:

You really can only do a little bit in their calibrations, if they had an ETC you could do a lot more, but with a mechanical...

You really can only do a little bit in their calibrations, if they had an ETC you could do a lot more, but with a mechanical throttle its somewhat limited. Adding some fuel helps for sure, however I don't believe timing does as much as some think. When you retard the timing you will get a power reduction which helps, however you also push out burn duration and timing, meaning combustion is pushed out later, and can still be burning when the exhaust valve opens. What this means is increased heat load on the exhaust valves, and ports which is the hardest area of the cylinder head to cool, and can actually make head temps worse in these areas. This can fail the head gasket or reduce the clamp load on the head bolts eventually also failing the seal.

The best method to save an overheating engine is in the right hand of the operator.