engine temps for the 4age

[pen15]

Car - toyota corolla 1984

motor - jdm 4age 16v

use - drift

problem - there is none yet

occurs/started when - drifting

personal situation - ok here i go so i was at the drifts Friday night and i could only do maby 2 laps before my temps where about 260deg F or 126.666667deg C now i have a massive rad with a decent thermo fan i only get massive temps when sliding it hard as its on its limiter most of the time or just under so this is my question is it ok for the engine to run this hot or is that too hot what would be the max you could run it on before doing major damage i also run an adaptronic so it wont cut the engine if temps are too hot as factory ecu does.

cheers all
mat

[reecegze]

Well water boils at 100 degrees I would aim to maintain between 85 to 90 when tracking it. Mines never goes over 95 when on limiter with 4agte motor. I'll would be looking for problems in you cooling system

[timbo]

with temps that high i would be looking at whether you water is actually flowing through your system. big radiators and thermo's are great but if your cooling system is clogged up they're not going to do shit.

[ke70dave]

agreed with timbo.

also where is your temp guage sender located?

my engine doesnt get any hotter than 82 deg, though ive not really drifted it at all, but i hardly ever have to use my thermo fan at all. takes about 10min of sitting still before the temp starts to rise above 82, and i only have a standard ae71 radiator.

oh and my temp guage sender is located just near the thermostat.

[KENut]

fixed.

I guess you'd be getting pretty close to boiling point though anyway. What radiator cap are you using? Like a 90kPa? I'd get a higher one just in case. Is the thermofan shrouded well? Sounds like the radiator isnt getting enough air flow through it

[sundee]

^^ what is atmospheric pressure? i think you might mean. ISA ( international standard atmosphere) which is 1013 hpa @ 15'c
Water does boil at 100 Deg , coolant doesnt.
Green coolant boils at - 105'c
Red Coolant Boils at : 127'c - 130'c

fix:

upgrade to red coolant - get the concerntrate, and mix it as per the instructions
get a hi pressure water cap - increasing the pressure increases the boiling point.
not sure if you can get a hi flow thermostat?
could make some gates to catch air.. like on a 45' angle facing out and foward from the outer edges of the radiator.
get the water system flushed out and cleaned.

[wntdae86]

use coolant and check your system for blockage ... also check the thormoist is a cold opening one


DO NOT USE WATER

[ke70dave]

all those ideas are good, but in reality with a standard system he should not be getting anywhere near the temps he is getting with a stocko 4age.

and he has a chunky radiator which should definately help.

my guess is blocked cooling system or stuffed thermostat.

other thing is a dodgy rad cap, when it is running is the rubber radiator hoses pressurised? they should be nice and hard, compared to when the engine is cold they will be soft.

if the 126C temp is correct...thats bloody hot!!

oh and if you get it to hot, it will overheat, which will warp your head and blow your headgasket.

warped head = either throw it out, or pay ALOT ($800+) to get it straightened.

[pen15]

noted will be upgrading the coolant

as for where the temp sensor block is located its on the upper hose on the rad

how would i check for a blockage

and finally whats the best thing to do a good clean out on the system?

thanks all for the feedback really appreciate all your comments ill now have a good list of things to go through and either check or rectify

[trikzlane]

you can get these adapters that you connect a air-line and water hose too, to pressure blast the cooling system, thats the most effective way