WOT Tuning

[Tyler Townsley]

Originally Posted by Jerry#397

Tyler,

If I read your reply correctly it seems to me that one could "plug" the bypass line and remove the thermostat?

Thanks,
Jerry

Yes, but.

http://deliquescence.net/~tyler/misc/zr1waterflow.jpg

As I said earlier Lane tried this on his 90 at one point and found the water did not cool because it flows through the radiator too quickly to cool the water.

A little more discussion. Lotus speced the LT 5 pump at 25 gpm flow per 1000 rpm. The stock radiator was not reliable over about 100+_ gpm so the bypass was developed to avoid having to source another radiator. GM felt most owners would not operate the motor over 5500 rpm for any length of time so there would not be threat to any long term operations.

Once you start competing with the car you find you spend a lot of time over 5k which will stress the cooling system but the above must be taken in consideration when makeing any changes.

Tyler