Overheating !

[skylinefan]

Ok guys need a quick bit of advice, I decieded to do a radiator flush as it was beginning to look a little dirty, now ever since if i give the car any guts it begins to get very hot...... now a little back ground, the hoses are quiet soft !! so im thinking of replacing then anyways, but im wondering if o may have clogged the radiator or the theromstate??? im a little lost, cause i flushed it another time thinking that would help !! but it doesnt seen to have helped...

also aboyut 2 weeks ago i somehow misplaced my radiator cap so i got anothter on and just thinking maybe it not suitable for a r33 GTST ??? and help or agvice would be benificial ... should i take the tadiator out and do a major flush of the engin and radiator ? repace the thermo??

thanks guys

[Craved]

getting them properly flushed mean having the end tanks taken off, and due to the age of these cars there is usually hairline cracks in the tanks, which means new tanks when getting that done, take it out and geta quote.

re: cap for radiator, you see the coolant spilling out of the overflow tank?

did you Bleed the radiator system properly when you refilled it after the flush?

[skylinefan]

getting them properly flushed mean having the end tanks taken off, and due to the age of these cars there is usually hairline cracks in the tanks, which means new tanks when getting that done, take it out and geta quote.

re: cap for radiator, you see the coolant spilling out of the overflow tank?

did you Bleed the radiator system properly when you refilled it after the flush?

thanks for the quick reply !! i did bleed the entire system and bleed and air trapped in the system, it did once have coolant spill over the overflow the first time it got hot... but hasnt done it since, also stupid question !! but could it also possibly be incorrect coolant?? im usesing a stock standand Radicool "type A" coolant? should have i used a turbo specific high grade coolant??

[Craved]

coolant is the same

remember that adding more coolant increases the boiling point of the fluid, but DOES NOT make it better at cooling. so as lonmg as there is no leaks and the coolant is diluted, it could be a blockage.

doubt it would be the thermostat as if that didn't open you would not see the high temps

sounds like a blockage in the radiator..

[skylinefan]

coolant is the same

remember that adding more coolant increases the boiling point of the fluid, but DOES NOT make it better at cooling. so as lonmg as there is no leaks and the coolant is diluted, it could be a blockage.

doubt it would be the thermostat as if that didn't open you would not see the high temps

sounds like a blockage in the radiator..

so would it be a good idea to take the radiator out and give iot a good flush??

or is there something i can use to do the job?? or should i have someone who totally knows what they are doing?? like i have the confidence to do it myself !1 i jsut dont want to make the problem any worse ....

thanks so much for the advice

[Craved]

your flush you did included removing the radiator and pumping some high pressure water through it before putting it back in the car ????

proper flush will costs you if the end tanks are cracking, cos when they remove them they usually damaged and need to be replaced

[skylinefan]

your flush you did included removing the radiator and pumping some high pressure water through it before putting it back in the car ????

proper flush will costs you if the end tanks are cracking, cos when they remove them they usually damaged and need to be replaced

No i didnt take it out !! was just a general clean and flush,,, thew end tanks where are they situated !! and doesn the radiator just slip out once it been taken off the manafold?? and what kind of cost are u thinknig ?? just an estimate??

[Craved]

couple of hundred at least.

the end task are the plastic bit on the radiator... like where the pipes go into it .. and the rad cap is located

if you are going to do track days, look into getting a quote from a radiator place... if its a few hundred look into getting a bigger radiator

http://www.justjap.com/parts_ncooling.htm

[skylinefan]

No i didnt take it out !! was just a general clean and flush,,, thew end tanks where are they situated !! and doesn the radiator just slip out once it been taken off the manafold?? and what kind of cost are u thinknig ?? just an estimate??

Sorry bout all the stupid questions !! just a little worrieD and i want the car back fully on the road !! interesting fact i can drive it for quiet awhile without the heat riseing !1 it just if i put my foot down a little ...???

[Craved]

could be the thermo not opening enough to flow enough with the increased heat from a thrashing, or the radiator not having enough flow to cool enough after a thrashing..

change the thermostat if you can do it yourself, be cheaper fix, if it dont work then atleast you wont have to worry about it later

[cowie165]

When you say it becomes very hot, do you mean it keeps rising or it just runs hotter than before?

The reason I ask is because if the thermostat is stuffed and no longer opening you won't have any coolant circulating and it'll bake itself. Craved dude I don't understand why you said " if that didn't open you would not see the high temps". Could you please explain a little more? As far as I know, if the thermostat stays closed to assist in warming the block and once it reaches operating temp, it opens, allowing coolant in, to prevent high temps...?

Happily corrected if I have things ass about.

[AzzurrA]

it could be a number of things...

blocked radiator, air pocket trapped in the system, faulty thermostat, etc..

a way you can check for a blocked radiator - disconnect both hoses from the radiator and put your garden hose in the top connection. Is the water filling up inside and then coming back out the top? is there any water coming out the bottom connection? if so, is it the same amount as you're putting in?

did you bleed the air out of the system at the plenum?

are you losing any coolant?

to give you an idea of prices, i had my radiator professionally cleaned and rebuilt for around $250, that included new end tanks.

[skylinefan]

could be the thermo not opening enough to flow enough with the increased heat from a thrashing, or the radiator not having enough flow to cool enough after a thrashing..

change the thermostat if you can do it yourself, be cheaper fix, if it dont work then atleast you wont have to worry about it later

cool !! ill do that on the weekend, ill do the hoses and the thermostat, and then and only then ill have to get it look at by someone !! so ill do another minor flush and do those couple things, fingers crossed, thanks for the advice, ill let u know if any changes occur.

[Craved]

i might be having a mental blank, but the temp sensors are located after the thermo, so if its not open then the water on the temp sensor side isn't as hot as inside the engine...

hence why a car stays at cold til it sort of suddenly gets warm when the thermo opens.

[skylinefan]

cool !! ill do that on the weekend, ill do the hoses and the thermostat, and then and only then ill have to get it look at by someone !! so ill do another minor flush and do those couple things, fingers crossed, thanks for the advice, ill let u know if any changes occur.

oh another question !! a thermostat, how much u think ?? i had a look and a nismo ine was about $150... i thought they were about 50 - 70$

[Craved]

wouldnt need a nismo 60 degree one...

they are the same as an RB30, RB26 etc .. all the same ..

so try holden/nissan for price on the RB30 one for a r31 etc. should be cheaper

[skylinefan]

wouldnt need a nismo 60 degree one...

they are the same as an RB30, RB26 etc .. all the same ..

so try holden/nissan for price on the RB30 one for a r31 etc. should be cheaper

You shouldnt have showed me that site !! now i want a whole new radIATOR HAHAHAHAH