Radiator Problem: Repair, Fabricate, or replace with OEM?

**robot.sonic** · March 28th, 2018 09:53 PM

Baka kailangan na din magpalit ng thermostat and thermoswitch?

**baludoy** · May 6th, 2018 09:46 PM

Originally Posted by suysuy

What’s the normal coolant temperature? I’m getting 97c to 104c during stop and go traffic at 12 noon. Nag max ako ng 110c during uphill pero my temp gauge never moved beyond 1/2.

Reliable ba tong coolant temperature reading from obd port or mas reliable yung gauge?

ano nga ba ang normal temp ng coolant dito sa atin?

**Archerfish** · May 6th, 2018 11:19 PM

Originally Posted by baludoy

ano nga ba ang normal temp ng coolant dito sa atin?

If I'm not mistaken, it should be above the normal boiling point of water. That is the reason why radiator cap has a pressure rating. If you pressurized the water, the boiling point also increases. The higher the temperature of the jacket water, the higher is the thermal efficiency.

This is not to say that it should go all the way up and it should perform better. There are material limits and other factors to consider.

I just don't know why this is not followed for large engines, for example, engines with piston diameter of 900 mm. Usual jacket water temperature is maintained between 80 - 85 degrees Celsius.

**baludoy** · May 7th, 2018 04:56 AM

^ how about on 2 liter gas engines? My car averages something like 90c according to my obd2 reader

do what you gotta do so you can do what you wanna do

**Archerfish** · May 7th, 2018 10:12 AM

Originally Posted by baludoy

^ how about on 2 liter gas engines? My car averages something like 90c according to my obd2 reader

do what you gotta do so you can do what you wanna do

I believe that is within the normal range. However, please take my word with a grain of salt. I'm not an automotive engineer but an ordinary employee who finds time in reading.

There are guys here who mentioned about PV=mRT with KJ/kg thing, I think they are more competent to give a better answer to your question.