Quote:
Originally Posted by A26B
I have the Ron Davis in my ZR-1
The Ron Davis is a racing radiator that has 5 cores as compared to the stock 2 core. As a "racing radiator" it performs best at racing speeds where air velocity is high. Being thicker, actually makes it more resistant to air flow than the 2 core radiator.
A simple but effective modification that yields significant results, is to drill 3 or 4 holes in the thermostat flange, just inside of the seal contact area. This modification reduces back-pressure for coolant passing through the radiator & thermostat and therefore allows more flow coolant through the radiator, instead of the bypass. Bypassed coolant means hotter temps.
I strongly suggest you perform the t-stat modification before spending a lot of time & money on expensive radiators and fans.
As a side note, the only way to insure the stock radiator is as effective as it can be.... is to remove it and insure all the gravel & debris is removed and the vanes are reasonably straight.
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What is this Thermostat mod that can be done?
Thanks,
Jeff