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What water temp for rb20det

legend01

By legend01,
in Engines & Forced Induction

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legend01 Experienced

legend01

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I thought as much but id like to do a check on the cooling system and would like to know what degree's its suppose to run at the normal running temp if anyone knows

Thanke Peter

AzzurrA Grand Master

AzzurrA

Posted
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mine runs at around 71 - 72 degrees usually (in winter, with all these 20 degree days we've been having), but today it was a bit warmer (air temp was around 25, and sunny) and the car was running at around 77 - 78 degrees, went for a hard drive over some mountains and it didn't exceed 84 degrees.

blind_elk Grand Master

blind_elk

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The temperature should be governed by the thermostat (mine is a 76.5 deg thermostat). If the engine is overheating, as evidenced by the auxilliary fan coming on, then it is possible the thermostat is not opening fully to allow proper circulation of coolant.

Check / replace the thermostat would be my first action.

Cubes Grand Master

Cubes

Posted
Posted

I had a dodgy water temp sensor that was reading ~15-20degree's lower than the actual real temperature. Slapped a new one in and temps went from low 70's to low 80's.

The guage would always sit below half and move around a little. Once I replaced the temp sensor it sat smack on half and now doesn't move.

The stock guage is a little dieceiving due to its markings, it looks like its slightly over half but its really smack on half. :P

The optimal temperature for economy is around 85degree's. Optimal Performance is apparently in the high 70's.

Cubes Grand Master

Cubes

Posted
Posted

What sort of fuel economy figures are you ppls who are running under 80degree's getting?

The reason I ask is under 80degree's the ecu richens up the afr.

The RB20DET running 1bar, exhaust and fmic used to return 470km's per 50litres driving locally. All 60km/h driving, short trips of roughly 10km or so to Uni and back.

The RB30DET now returns 450km's but I am getting stuck in to it a lot more :P, limping around I've managed 520km's per tank. Per tank being once the red light shows, fill it up straight away and its always 50-52litres.

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