R34 Gtr V Spec Over Heating

[r34vspec]

hi there guys, i just bought my r34 gtr vspec its got the on board digital computer it seems to get hot every time i give it a fang the temperature reaches 105 but when im cruisin it sits between 90 and 98 is that ok or is there something wrong and the car is completely standard thanks

[sh@un]

coolant in the radiator or just water?

[r34vspec]

coolant in the radiator or just water?

coolant

[GTR-N1]

If you're the 1st owner in Oz, it is 'best practice' to replace the Jap water/coolant and replace it new stuff. This policy can save you from a new radiator, heater core etc. This is the start of your process of elimination. Congrats on your new acquisition!!!

[(OO)SKYLINE(OO)]

Take it to your mechnainc and do a radiator coolent flush.

Then top it back up.

Yes, when you 'fang' it, the temps will rise abit but nothing too serious.

[r34vspec]

thanks im taking it tomorrow to a gtr speacialist see wat happens but i already replaced the coolant with motul coolant its recomended

[(OO)SKYLINE(OO)]

^^Good stuff!

I use Tectaloy 100 radiator coolant, which is pre-mixed and designed for Turbo cars.

Also if you want to enhance your cooling in the engine bay, you can install a R34 GTR V-Spec II carbon fibre bonnet as they have a NACA duct positioned above the twin turbo system and it would give you extra cooling.

They are a straight fit bolt on.

Unless you have a V-Spec II than all is good...

[GTR-N1]

^^^ or get a 3" NACA Duct from www.kenlowe.com.au in Qld.

It's a direct copy of that in the VS2

Put it in the exact same spot via your panelbeater = simple

[r34vspec]

would a 52mml alluminuim core raidiator keep it cooler or keep the temp lower than standard raidiator???

[GTR-N1]

^^^

There are a couple of different rating thermostats available, one of which will do that. Certain BMWs capitalise on the availability of these too.

And since you've already changed the coolant, you didn't forget to bleed the remaining air out did you? Your temp will go up if there's any air left in there.

[blind_elk]

would a 52mml alluminuim core raidiator keep it cooler or keep the temp lower than standard raidiator???

Doubt it (refer latest HPI)

Isn't 98 a bit hot for "cruise", ie low load? That would suggest a problem with the water pump - occasionally the vains rust away and it can't circulate coolant as efficiently.

[r34vspec]

what temp should it be for a standard 34 gtr

[MRGTR911]

Get it checked , mine sits between 84-89 most of the time on a good fanging 95 max . over 100 is a bit high man get it checked .

[r34vspec]

ok wat about on a hot day and the oil temp what will that reach after fanging

[MRGTR911]

Well you wouldnt really fang it on a hot day mabye a couple hits here and there but constant thrashing ??? how hot are we talking here , honestly ive never had my oil , water temp go over 100 .

[r34vspec]

yeah no worries its getting checked now see wat happens let you know wat happens thanks

[(OO)SKYLINE(OO)]

If you upgrade your radiator, it will help with cooling, but if your not doing any serious track work, there is not much point... But dosen't hurt to change it either.

You might want to check your water pump, but I doubt it will be the problem.

On a hot day, your temps will always sit alittle higher then on a cooler day.

I would keep a look out for your oil temps too... Does it go up like your water temp or is it sitting at a regular temp?

[r34vspec]

the oil temp sits between 91and 98 that ok???

[Johnny]

I dont see any higher thatn 83-88 for water temps (on a 38 degree day it reached 90 but i put the heater on the bring it down)

oil temps are about 81 on a cold night and go as high as 85 on a hot day cruising but ive never seen higher than 90degrees ever

[(OO)SKYLINE(OO)]

From memory thats seems fine on a hot day as my car can get to those temps too. + it depends if you run your A/C or driving up a hill, anything that requires the car to be rev'd alittle harder with effect the temps. Again its normal.

Normal crusing temps are just under 90 degrees.

From my understanding, the R34 GTR's seem to hold quite a consistant temp, even with a bit of a fang.

My friend Tim GTR on SAU has a R34 GTR V-Spec, I took it out for a run, hammered it down the straight and a few corners, then check the MFD with the oil and water temps and they seem stable and yes within that range from about 91 to 98, I think it sat at about 93 degrees C.

What engine oil you using?