Over Heating

[GT-T 1998]

hi

i was wondering if someone could send me in the right direction, i took my car to a track day and it was over heating according to my defi gauges, oil hit 125 degrees and water 105 degrees.

i dont think thats very good for the engine . ive been looking into getting a new alloy radiator and a oil cooler so i can enjoy my track days without over heating.

but unsure if i need twin or triple core radiator as ive been told sometimes to big is no good.

and with the oil cooler not sure how many rows are necessarily needed.

atm my car 98 r34 gt-t has a turn flow blitz intercooler , 3inch exhaust , manual boost controller nothing else mechanical done.

hope u can help me.

[StevenCJR31]

suggest that a vented bonnet might help get the hot air out, do you have a mate you could borrow one off and test on the track?

[GTSBoy]

Those temperatures are just OK. As in, you can run it that hot but you really don't want it to get much hotter, and you'd prefer it to be cooler. A new triple core radiator will definitely cool better than an old single core, so that will probably help. If you look after the water cooling, then you won't need the oil cooler to be too big. Something that fits behind the brake duct is usually good enough unless you have a monster engine. But before spending money on all this stuff, it might be worth wondering if you just need a new water pump (might have lost some vane to corrosion), or might be better off looking at making sure your air flow through the radiator area only goes through the rad, not around it, etc etc. cheers

[defari]

id say an oil cooler would be essential for track days... there is another thread going about oil coolers / thermostats etc..... Ive never tracked my 33 (i have an oil cooler and relocated oil filter) i barely see temps above 70 degrees.. even after long drives in 30 degree heat with 80% + humidity...

an oil cooler is pretty simple to put in - maybe consider it next time you do any oil change..

Edited February 1, 2012 by defari

[boostn0199]

Koyo radiator plus anything like a 19 row oil cooler will solve all your problems.

[GTR_JOEY]

I reckon just do the usually checks before u go buyin any expensive aftermarket parts

1 check thermostate operation

2 flush entire system

3 change coolant

4 bleed the system and get all the air out of it

This will pretty much only cost u ur time

then go for your water pump/radiators etc

[GT-T 1998]

suggest that a vented bonnet might help get the hot air out, do you have a mate you could borrow one off and test on the track?

nope dontno any1 with one. maybe do the track without a bonnet ?

Those temperatures are just OK. As in, you can run it that hot but you really don't want it to get much hotter, and you'd prefer it to be cooler. A new triple core radiator will definitely cool better than an old single core, so that will probably help. If you look after the water cooling, then you won't need the oil cooler to be too big. Something that fits behind the brake duct is usually good enough unless you have a monster engine. But before spending money on all this stuff, it might be worth wondering if you just need a new water pump (might have lost some vane to corrosion), or might be better off looking at making sure your air flow through the radiator area only goes through the rad, not around it, etc etc. cheers

i got my water pump changed 20,000kms ago should be ok i guess ... but i do have cheap kmart coolant in it tho lol so that could be an issue i guess ..

any reason why you suggest triple core radiator ?

id say an oil cooler would be essential for track days... there is another thread going about oil coolers / thermostats etc..... Ive never tracked my 33 (i have an oil cooler and relocated oil filter) i barely see temps above 70 degrees.. even after long drives in 30 degree heat with 80% + humidity...

an oil cooler is pretty simple to put in - maybe consider it next time you do any oil change..

ah just got the car serviced ... yea ive been told they are basicly necessary for track use. just general driving get my car up to about 80-90 degrees oil temp.

Koyo radiator plus anything like a 19 row oil cooler will solve all your problems.

would you recommend cooling pro ? or go with a better brand like koyo n blitz.. wouldnt happen to know if twin or triple core works better with the stock water pump ?

[HEKT1K]

I reckon just do the usually checks before u go buyin any expensive aftermarket parts

1 check thermostate operation

2 flush entire system

3 change coolant

4 bleed the system and get all the air out of it

This will pretty much only cost u ur time

then go for your water pump/radiators etc

This is good advice, do the easy stuff first.

Considering you have few mods, I wouldn't blame the radiator straight away.

[GTSBoy]

any reason why you suggest triple core radiator ?

Only because the China spec aluminium rad I put in years ago was triple core, cheap and works perfectly. It was clear that it provided much much more cooling than the original rad (the only problem of the original rad was a cracked end tank, the core was in good condition).

Cheap coolant doesn't make any difference to cooling performance. Only to how gracefully the coolant ages (old coolant becomes more and more acidic with time) and hence how well it control corrosion.

[GT-T 1998]

I reckon just do the usually checks before u go buyin any expensive aftermarket parts

1 check thermostate operation

2 flush entire system

3 change coolant

4 bleed the system and get all the air out of it

This will pretty much only cost u ur time

then go for your water pump/radiators etc

i had an issue when i took my car to a mechanic that told me they specialized in skylines after they done my timing belt they didnt bleed the coolant through and i wasnt running on much coolant at all took it back the next day n they tryed to tell me my radiator was leaking then finaly told me they stuffed up after 4hrs of waiting around.

ill look into that they might have cut more corners fixing it up

[GT-T 1998]

Only because the China spec aluminium rad I put in years ago was triple core, cheap and works perfectly. It was clear that it provided much much more cooling than the original rad (the only problem of the original rad was a cracked end tank, the core was in good condition).

Cheap coolant doesn't make any difference to cooling performance. Only to how gracefully the coolant ages (old coolant becomes more and more acidic with time) and hence how well it control corrosion.

ohk, didnt no that about coolant lol just last longer the better it is