I want my car running cooler than 220, so I want to buy a fan switch and a lower temp thermostat.
I am not exactly sure what temps to get.
I was thinkin a 160 thermostat and a switch to come on around 190 and turn off at 170, But i don't know if this is too cold or not, and this is going to be for use in the summer.

 

Hypertech Powerstat 160 degree might be good?
You could also get it from Jet Chips for 11 bucks but you have to call them with specific information

1-714-848-5515 at Jet Chips...I'd go with the Hypertech though..

 

I use a 160° thermostat with a 176°/on 166°/off fan switch along with the Hypertech Thermomaster chip. Works pretty well for me. Whem I am cruising the coolant temp runs about 170. I lost probably about 1 mpg but gained (no numbers) enough hp/torque to bark the tires at 55 mph in 3rd (auto trans).

Ran me about $235.

 

In the summer, a 160 is ok. Also get the fan switch 533-4026 by hypertech. Fan Switch, On @ 176°F/Off @ 166°F

 

where can i get the switch from and how much does it cost?
also what is a thermomaster chip? is it like a whole new eprom? and how much is one of them?
thanks!

 

If it is like my truck (OBD1) then the chip is just a plug-in into the existing computer. It just modifies certain codes in the comp.
Fuel mixture for example, what temp is "operating temp", etc.

I suppose that since the transmissions are not electronic like in my truck, shift points cannot be set via the computer.

 

Hey mako350Z28

How much HP do you think that Hypertech chip gave you ? I been thinking about getting one myself .

 

Honestly, the chip itself probably no more than 10hp. Now the chip in combination with the stat and switch, I'd have to say 25-35 hp and torque. (sorry I don't have any dyno numbers) Like I said before, it was enough to give me traction problems. If I put the trans in 1 and give it 3/4 gas the car will sit there and spin (street) tires until I let up.

I don't know what was done to the car before I got it, but it would already run 0-60 mph in 5 to 5.5 sec with me and a friend in the car on a full tank of gas weighing in at about 4040 lbs. (with me and 1/3 tank gas it weighs @ 3800 lbs)

Of course, now it runs a bit slower because of wheel spin. I am trying to find better tires and any suggestions would be welcome.

You can find the chip at hypertech.com along with the stat and the fan switch. Just remember: to do any real good you need all 3 components.

Oh yea, forgot - the chip just plugs into the factory chip. All it does is block the factory engine setting and use the ones on the new chip. If you are not happy with the new chip, just remove it and that will restore the factory defaults.

 

Chip, Stat and switch can give you that much power? I doubt it.

They just increast timing on some of the curves in that chip. Look, for $350 you can get a chip that is set for your car or for whatever the hypertech goes for, it is set up just to advance the timing and maybe fuel a bit. The difference is between a tailor made suit and a 1 size fits all pair of pants. Your call. BTW, they are anywhere from $120 - $180 from jegs.

I got the SLP EPROM and couldn't find any difference between before and after at the track. After 5 runs with each chip, the results were so inconclusive that it wasn't worth going any more.

 

i am not in it for so much as the hirsepower gains, but they would be nice, but I just want my car to run at a safer temp, I don't like running at 220
thanks!

 

First thing is why. Why is your car running up that high? Inefficient cooling? (radiator or al heads might help).

When your EPROM is recalibrated, you can specify when the ECM controlled fan comes on plus you get a little more power. Why not?

 

Why? All L98's run that hot from the factory. It came stock with a 195° stat and a 243°/on 223°/off fan switch. Mine was no different with a cruising temp of 220°. GM found that if they ran the engines hotter there were less hydrocarbons in the exaust i.e. cleaner. But the trade off is less hp and torque because they lose that power to heat, not to mention a shorter engine life.

That is why I said the chip gives only maybe 10 hp but 25-35 in combination with the cooler stat and fan switch. Anyone who owns a Z28 with the L98 knows that the car loses LOTS of power between 185° and normal operating temperature (220°F).

 

One thing, in later model 3rd Gens the fan switch is in the PROM.
You can change the T-stat but you'll need a chip for the switch change. I bought a Hypertech "Therm-O-Master" chip for mine, $169 and change. Or maybe someone here can reprogram yours?....
Mine NEVER runs over 210* and most of the time sits around 190*with a 160* stat.(too cold is bad too..)

 

Question for the motor experts - Is it true that if you run an engine in the 160 degree area for most of its life... that it actually can HURT parts of it?

I read something about fuel not getting burt correctly and pistons have excess wear because of not getting up to a higher temp.

I run 160 in my truck with Flex-a-lite 250 fans... and I never get over 160 degrees (unless I am towing the camaro of course). Im thinking about doing the same for the camaro (except the fan kit is flx-220).

 

I have a Jet Fan Switch installed . It's the 170* switch .