JakeWI

so I want to get my jeep temps down alittle more. what are all the things you guys recommend. like hood vents, anything and everything at any price.

muddeprived

I'm in your shoes now. I installed some hood vents to start off. Dunno what i'm gonna do next. I'll keep an eye on this thread.

theangler

Is your system open type or closed type? From what I understand closed type are very tempermental. I plan to upgrade mine in the near future.

BlueXJ

By his vehicle description he already has the open type. I have the closed type and think it works fine just requires a little routine maintainence. Keep your closed system. The newer high performance engines are switching back to the closed system because it will allow hotter engines to operate at a higher temp like a lot of turbo engines today have.

JakeWI

im not sure the difference between the open and closed types. please explain and yes i would thinking about doing the hood vents. i was also thinking about a different radiator. any you guys would recommend?

BlueXJ

Open has a cap on the radiator. The closed system has a plastic expansion bottle on the passenger side firewall in the engine bay.
As for radiators just stay away from "Radiator Barn" as they have a bad rep in the last couple of years.

offroadnut36

hood vents, radiator, high temp. header wrap on headers AND downtube

BlueXJ

Look at muddeprived's write up on his hood vents from West Marine. He even says he can see heat waves rising from them. That may be your best bet.

Mykal

Fan Switch

Aux Fan Switch

Electric Fan Overide

Hood Spacers and Louvers

Hood Spacers again

Lower Temp Thermostat

BlueXJ

Mykal are there two temp senders on H.O. Jeeps like on Renix Jeeps or are they combined on H.O.s?? Something is failing to bring the fan into the cooling mode at the correct temp. I wonder what it is?

offroadnut36

thermostat is your best bet

BlueXJ

He isn't solving the "fan not coming on when needed" problem. He needs to find that and fix it or the problem will continue.

Mykal

There is one in the front.

offroadnut36

I thought the thermostat turned the fan on at a certain temp.?

Mykal

Negative. The thermostat controls the flow of coolant.

Any liquid-cooled car engine has a small device called the thermostat that sits between the engine and the radiator. Its job is to block the flow of coolant to the radiator until the engine has warmed up. When the engine is cold, no coolant flows through the engine. Once the engine reaches its operating temperature the thermostat opens. By letting the engine warm up as quickly as possible, the thermostat reduces engine wear, deposits and emissions.

If you ever have the chance to test one, a thermostat is an amazing thing to watch because what they do seems impossible. You can put one in a pot of boiling water on the stove. As it heats up, its valve opens about an inch, apparently by magic!