Thermostat change?
Thread Starter
Racer
Joined: Feb 2002
Posts: 424
Likes: 0
From: Anaheim Ca
Thermostat change?
I've noticed that alot of people here have changed their themostats from 195 down to 180. Other than the engine running cooler, is there any other reason to change it down? I have an 85 Vette, stock engine. In Southern California, where the weather ranges from about 40 degrees in the winter to 95 degrees on a hot day in the summer.
Another question. Description: the upper heater hose "pipe" has a "T" molded into it which is capped off with a rubber cap and clamp. The "T" is located about 10" forward of the firewall near the mounting bracket. The rubber cap sprung a leak in it this week and I bought a new one at the Corvette store. When the clerk referred to it as a vacuum cap, I started to wonder if it was the right part or if there is a more substantial device that is designed to take the heat and pressure. Any suggestions? What's that "T" for anyway?
Another question. Description: the upper heater hose "pipe" has a "T" molded into it which is capped off with a rubber cap and clamp. The "T" is located about 10" forward of the firewall near the mounting bracket. The rubber cap sprung a leak in it this week and I bought a new one at the Corvette store. When the clerk referred to it as a vacuum cap, I started to wonder if it was the right part or if there is a more substantial device that is designed to take the heat and pressure. Any suggestions? What's that "T" for anyway?
Drifting
Joined: Aug 2000
Posts: 1,251
Likes: 0
Re: Thermostat change? (Netnarc2)
I was thinking the T is for purging air .Sometimes its nessesary when changing coolant parts to burp the engine.
But it might be something for flushing the system .But Im doubting that.
People are telling me my overrich problem is from changing thermostats,making the engine think its cold,soo it richens the mixture.
I dont know about that one either.Ive an 180 also.
Good luck
But it might be something for flushing the system .But Im doubting that.
People are telling me my overrich problem is from changing thermostats,making the engine think its cold,soo it richens the mixture.
I dont know about that one either.Ive an 180 also.
Good luck
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Thermostat change? (Netnarc2)
Lower coolant and under hood temps are the reason for going to a lower temp stat.
Every 10deg drop is worth about 1%hp gain. So going from a 195deg to a 160deg stat is worth about 8-10hp. Also the plastic and rubber parts tend to last longer and the engine cools to ambient temp quicker.
Since you don't race your Vette, a 180deg stat should be fine. You will need a fan sw or EPROM change to bring the fan on around that new temp for city driving. On the highway it will run cool.
Every 10deg drop is worth about 1%hp gain. So going from a 195deg to a 160deg stat is worth about 8-10hp. Also the plastic and rubber parts tend to last longer and the engine cools to ambient temp quicker.
Since you don't race your Vette, a 180deg stat should be fine. You will need a fan sw or EPROM change to bring the fan on around that new temp for city driving. On the highway it will run cool.
Team Owner
Joined: Apr 2002
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Re: Thermostat change? (Netnarc2)
I put in a Hypertech Thermomaster Chip, 160-degree thermostat and a cool fan switch/sensor. I can drive in 95-degree+ Florida summer heat with the AC on and the engine rarely gets over 170-degrees. :cool:
