Rb25det Water Temp

[bazz]

hey guys i got a power fc on my r33. i was just wondering if my power fc reads a temp of over 90 after a while of driving should i be worried? the temperatire needle is always on half way so it seems ok there, but just wondering what should the average reading of the water temp on the power fc be.

cheers

[R31Nismoid]

Hmmm... How high over 90? 99 or 91?

There is a bit difference between the two.

If its 90/91 i wouldnt be worried, depends on other factors aswell.

Cruising 100km/h is it the same?

Is it only that temp in peak hour traffic?

Bit more info dude, but it sounds ok at this stage.

[Abo Bob]

That's fine. The thermostat is only opening at 82 degrees.

[WazR32GTSt]

don't worry its nothing

my old man's corvette gets up to 110deg in traffic before the fan comes on

remember the water is under pressure so it boils at a much higher temperature than normal water. plus there's the anti-boil added that should assist even further..

[bazz]

ah ok sweet, thanx alot guys, yeh its mainly in traffic, on d freeway its fine. thanks gusy much appreciated

[Cubes]

Mine cracks 95degree's in traffic.

The stock guage starts reading greater than half once you hit *from memory* around 108degree's. Then it quickly heads north.

[Busky2k]

108C is pretty damn high before the needle moves! I believe the boiling of 33% coolant + a 1 bar cap is about 125C?

[R31Nismoid]

He said greater than half, sounds about right from what my stocker gauge does aswell.

[Busky2k]

Hehe I meant 108C before the needle movies from center

[Cubes]

Yer the guage (2 other R32 guages I've also seen) reads half from around 70degree's right up to 108degree's or there abouts.

[Roy]

The thermostat is 82 deg C??? On the street my handset say about 82-85. So for potting around the thermostat isnt cracking???? Or should i be checking that mine is ajmmed open. Because my temps sit so low on the street, i normally pull the pin at the track when the temp gets to around 90-95 (depends how much lomger the session is and how hot ther dy is etc if i push past 93 etc

[Zardos]

I haven't seen mine go pass 82 so far, and thats reading it off the pfc hand controller.

Edited August 12, 2006 by Zardos

[Busky2k]

82-85 on the street is A-OK Roy. The temp sender may not be accurate to the degree but most engine temps sit at or just above the thermostat temp. On hotter summer days it'll be 5-10C higher than the thermostat temp. Normally a thermostat will close roughly 5C lower than its set temperature.

Also I think high 90s is OK for the track. I'd probably think about pullin the plug when its more like 110C? Remember with a proper cap + coolant it wont boil until 120C.

[WazR32GTSt]

gtst cap is 0.9bar right?

[Roy]

82-85 on the street is A-OK Roy. The temp sender may not be accurate to the degree but most engine temps sit at or just above the thermostat temp. On hotter summer days it'll be 5-10C higher than the thermostat temp. Normally a thermostat will close roughly 5C lower than its set temperature.

Also I think high 90s is OK for the track. I'd probably think about pullin the plug when its more like 110C? Remember with a proper cap + coolant it wont boil until 120C.

Cool

[Cubes]

Roy,

I think the other dude meant to say the 'R34' thermostat begins to open at 82degree's.

The R32/R33 on the other hand begins at 76degree's.

If the thermostat is genuine or not also depicts the cars operating temperature and how quickly the thermostat opens completely. The genuine opens slow and by little amounts until its nice and hot. This results in a slightly warmer running temp with less fluctuations and a considerably quicker warmup.

The aftermarkets (supercrap autostores etc) open wide and really quickly, the aftermarkets also take ages for the car to reach operating temp from a cold start. On my sisters VL it would tend to run hotter under consistent load with the aftermarket but run cooler just pottering around, in the R32 I haven't seen this problem, it simply ran cool all the time; all though I didn't get to 'really' test it out in hot weather. I dropped the genuine thermostat in the VL as it ran much better and wouldn't over heat when giving it a boot full up willunga hill.

Both genuine and aftermarkets are rated to 76.5degree's.

(I sound like a record) I recently said the same in another thread.