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Rb25det Running Hot?

NISR32.5

By NISR32.5,
in General Maintenance

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NISR32.5 Rising Star

NISR32.5

Posted
Posted

My r32 has a s2 rb25 in. Recently serviced, new oil, oil filter, new coolant, plugs. Car was just dyno'd at 198rwkw on 9.5psi (standard turbo, fmic, 3" zorst, pod filter). The motor worries me as it seems to run heaps hot. Temp reads half way on the gauge but the intercooler piping is F@*^ing hot as it comes back to the inlet because the motor is running so hot!! But doesnt seem to overheat!

Anyone got any ideas???

cheers

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blind_elk Grand Master

blind_elk

Posted
Posted

You said the engine is not overheating. The piping is hot because its 80 deg C under the bonnet.

You will probably have to wrap the piping in insulating wrap to prevent heat transfer into the piping. Make sure it's not in contact with any unnecessary parts of the engine / radiator.

paulr33 Grand Master

paulr33

Posted
Posted

the heat you are feeling associated with the pipework is because it is running through the engine bay. the air travelling through it doesn't have a chance to heat up as its moving through so quickly so not to worry. the temp guage is showing you half way because youve blocked some airflow to the radiator by placing an intercooler in front of it. half way is probably a round about normal ish. mine reads half way and is approx 81deg on the hand controller which im pretty sure is fine

RB30-POWER Mentor

RB30-POWER

Posted
Posted

When the car is running, the huge amount of air being sucked by the radiator fan has to be pulled through the radiator and pushed out.

Possibly past your IC piping?

Like my brothers cars has the piping running across the bottom of the engine, and because it does this all the air being pulled through the radiator gets pushed out through the bottom of the engine bay, right across the piping and it gets very hot.

Took me a little while to work out once, as the piping was very hot, yet the cooler was cool as, then i worked out the hot air that was getting pushed by the fan was basically super heating it. (Will be fixed soon, inlet plenum inlet on other side, so IC piping doesn't have to go across the engine bay)

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