Alright, I need some advice.

I installed an underdrive pulley, the main e-shaft pulley, (from Unorthodox) this past spring. The past couple of weeks I've noticed that the car is running hotter than normal. Now, it has been incredibly hot here on the east coast lately, but the fact that I can actually see my temp gauge moving worries me. I know its not linear and the needle has never gotten above about 10 degrees past horizontal before coming back down to center again. Obvioiusly, I'd pull over and shut her down before it ever got close to the top.

The temp goes up when I cruise above 70 mph or when I accelerate, even rather mildly (I'm not even close to the second turbo). No other engine mods (yet). Now, I know the underdrive pulley slows the water pump speed, so could that be it? That it's not pumping as much water through the housings as it used to and therefore not cooling as quickly?

I'm already in the market for a new radiator (anyone selling a Fluidyne?). Think that will help, or could this be another problem?

Thanks for the help guys.
Ken

 

You should really get an aftermarket water temp gauge,
I have seen temps of 235-240 degrees (I once forgot to turn on my fans, thank god I eventually saw it and hit my fans) and my stock water temp needle did not even move. Also, reduce your radiatorfluid:water ratio for the summer and make some ducts to make sure all the air goes thru the radaitor. Even when stuck in traffic on hot days, my temp does not go above 185 degrees, usually im at 180.

Good luck

P.S. Others I know with aftermarket radiators have similar water temps as I do but I'm running the stock radiator.

 

I have the Unothodox racing Pulley for the main pulley.
(Just turns the Alt. and Waterpump)
And I have greddy Underdrive pullies.
I see about 185 degrees max.

 

It sounds like you may have a thermostat problem.

 

Yes the T-Stat is the first thing I would check, its cheap and easy to replace, should be done once a year.

 

Cool. Thanks guys. I'll get the thermostat looked at first.

And I was already considering getting a water temp gauge that actually works. Now I just have an excuse.

Skunks: what additional ducting have you done and how did you do it? Any pics?