NC hybrid setup/coolant blows heater core/how to avoid?

[James Ballenger]

Bruce Plecan wrote:

> It reduces the amount of water bypasing the radiator, and also, helps to
> pressurize the coolant in the head at higher rpm, reducing localized hot
> spotting.

Ok, I just didnt know which hole you were referring to.  Would the increase in
pressure at that point lead to a lower volume of water passed through the
heads?  Or would that be counter-acted by the decrease in volume at the bypass?

> All, very good things..   The hole in the thermostat is to make sure no air
> accumulates on the bottom side of it.   If ya llook close on some hot rods
> the first day after running the heater full one for weeks the temp guage
> rises rather high the first time the thermostat opens.   The colder the
> weather the worse quicker this happens.

I have seen people do this on each side of the thermostat, where did you drill
the hole?

James Ballenger