Water Temp

[R31Nismoid]

69-72 for me, 74 on a 40+ degree day

[PM-R33]

Wow thats really low

[R31Nismoid]

My front end isnt as cluttered in a HR as other models i think, plus my I/C setup is nothing like most FMIC are its close to the radiator core where as you look @ some FMIC's right down the front, making the air go all sorts of places, where the air only has one place to go with mine

Well, thats my theory on it anyway

[PM-R33]

Haha fair enough then. If that's the case, amazing what a difference in temperature it is making.

[bnr#@]

Mine is a steady 72 deg, goes to 74 on a 40 deg day.

Cooling is N1 water pump and ARC 68 deg thermostat.

Standard radiator and intercooler, no aircon at all so no aircon core between the two any more

[(OO)Firty Free(OO)]

Mine sits steady on 81c have seen it as low as 79 on a brisk morning and the highest has been 85c with spirirted driving/tuning. All of these readings were on my PFC hand controller.

[TriniGT]

What coolant are you'll running? I am rethinking now and what climate temps and coolant system with or without A/C? would be good to know for future reference.

[bozodos]

Microtech dash tells me between 84 (winter) to 88 on a 47 degree day with a bit of spirited driving, it seems to hit up to 92 when the car's parked with the motor running for an extended period, but thats the highest I've seen it go, and thats with a leaking water pump! Quite impressed with it given that it's a JDM car with a small radiator being in often very hot conditions here

[HR31_RB20DET]

Mine sits between 80-82, highest i've recorded was 92 on a 40 degree day with aircon on.

[wang]

Mine sits on bout 85-86 on a hot day with the a/c on. That's with a FMIC. Have seen it climb to bout 92, but that was sitting at the lights, a/c, 40+ day and after about 5 hours on the highway.

[Cartman]

My old 180 was the best, she'll be sitting on 95 most days, that's with a twin core GT-R radiator and 3 thermos... good ol' RB in a S13 chasis.. LOL.... overheat Queen!

your conservsion was shit than, my rb in the s13 while thrashing thru the hills on a hot day struggles to go past 86, cruising on the highway during the day it sits comfortably on 80-82, cruising on the highway at night time, 78-80, after steady night driving for a while and gunning it up to 200 than backing off i've seen the water temp drop down to 70 than slowly climb back up to 78-80

highest its ever been was 110, but that was a fairly long static skid! 

[Don Dada]

Rb26 in C35 chassis 85* normal and 90*-92* givin it some stick on a hot day

[geraus]

Mine sits at 81c on my power fc .

[Brockas]

Interesting thread.

I'm currently looking at trying to reduce my water temps, and it sounds like reducing the clutter in front of the radiator is the key.

I will take out all associated air con bits, but is there anything else I can do?

Today on a 38 degree day in Perth, on a free flowing highway going 100km/h in 5th, the water temp got to 95 on the PFC hand controller, and 102 on the Defi which reads from the top of the radiator.

Stock gauge didn't move.

[R31Nismoid]

^ i couldn't have more infront of my Radiator if i tried

I have

1x A/C Condensor

1x Ally Radiator

1x Small thermo fan/LH side - thats gotta be doing fk all compared to the clutch fan other than blocking air

1x Unchopped front bar, not much airflow on a HR31 bar

I have no issues on hot days. IMO i have more clutter than anyone else does.

The key is a good radiator and the clutch fan. I'm assuming that my motor sitting a bit lower is perhaps having some advantage - NFI how/why though hehe

Perhaps better 'guiding' of the air is what you need, being mine is kinda cluttered - it cant actually get out the sides and is being forced down the middle as there is little room for air to get out around the sides of anything

[bozodos]

do you have your stock under shielding to help (air pressure in the engine bay IIRC), was reading something about this on the Datsun forums where overheating is more of a big deal lol

[FJdat]

Interesting thread.

I'm currently looking at trying to reduce my water temps, and it sounds like reducing the clutter in front of the radiator is the key.

I will take out all associated air con bits, but is there anything else I can do?

Today on a 38 degree day in Perth, on a free flowing highway going 100km/h in 5th, the water temp got to 95 on the PFC hand controller, and 102 on the Defi which reads from the top of the radiator.

Stock gauge didn't move.

Sounds like your waterpump isn't functioning properly or your radiator is blocked.. When was the last time you had

your cooling system checked and serviced

[HYPTUP]

80-84 for me

[HYPTUP]

ive hit 92 on a 40deg day though ..

aslong as your under 95 your sweet

[JonnoHR31]

^ i couldn't have more infront of my Radiator if i tried

I have

1x A/C Condensor

1x Ally Radiator

1x Small thermo fan/LH side - thats gotta be doing fk all compared to the clutch fan other than blocking air

1x Unchopped front bar, not much airflow on a HR31 bar

I have no issues on hot days. IMO i have more clutter than anyone else does.

The key is a good radiator and the clutch fan. I'm assuming that my motor sitting a bit lower is perhaps having some advantage - NFI how/why though hehe

Perhaps better 'guiding' of the air is what you need, being mine is kinda cluttered - it cant actually get out the sides and is being forced down the middle as there is little room for air to get out around the sides of anything

must be a hr31 thing, i cant get my car above 75.

what radiator you using brockas? still got the clutch fan and shroud?