another over heating thread

[Fergus]

Well I went to replace my thermostat and turns out I didn't have one. Water pump is 3 months old. Koyo radiator with FAL 210 fans.

Found a loose coolant hose under the intake manifold. re-conected it and clamped it in place.

Dash temp sensor is broken. Even when my headgasket blew and coolant was boiling like crazy it didnt break the 1/2 way mark.

Engine is fully built and dont wanna blow another Cosmetic headgasket. Aside from the radiator cap thats comming in the mail, any thoughts on it over heating? and Cures for the posibilities.

Thanks

[teddy]

I've heard redline water wetter works pretty well. You add it in with your existing coolant and it "claims" it lowers temps up to 20 degrees F. Also, not really a cure, but how about a new water temp gauge, it would definitely be helpful. But buy a separate one from like autometer or defi because I believe the stock gauge is only a 3 step gauge meaning that it reads as cold, normal, way to effing hott. Or something along those lines.

[DRIFTEADOR]

if you didnt have a thermostat wouldnt coolant always flow through?

[drifter_for_life06]

i was thinkgina bout taking my thermo out.....is this a bad idea?

and RWW doesnt jsut "claim" it actually works

that stuff is superior

my friends old '90 Stanza almost looked liek teh gauge wasnt working b/c it stayed so cool

[e_c]

a good way to keep things a little bit cooler is to raise the rear of your hood with like 10 or 12 washers, raises the hood about 1 in

[teddy]

and RWW doesnt jsut "claim" it actually works

that stuff is superior

I wasnt saying it didnt work, hence why i said its supposed to work well. I just said it "claims" to lower up to 20 because I've had no personal experience with it.

And yes having no thermo would allow coolant to flow through at all times. but theres a reason that nissan put a thermostat there, so leave it in.

[fatboy]

you shouldnt need additives if your system is working properly

[naed240sx]

As far as ways to make ur car run cooler:

flush, refill radiator, use a larger percentage of water if at all possible in your climate, and used redline ww. It works.

drifter- yes, taking your thermo out is a bad idea. Why would you want to do that? If it isnt funtioning, replace it. It is designed to help your car warm up fast, but then open to allow your car to stay at an optimum temp.

ec-washer thing is a good idea, Ive heard that works very well for alot of people.

My personal experience: In texas, its been 100 for awhile during the day, and sitting in traffic not moving or going 5 mph with the ac on would cause my car to come 1 bar away from the "H". I flushed and drained the system, using about 70% water, 30% cooland and ww. I can get away with using less coolant because I have no fear of it freezing. Now it will not go above 2.5 bars(no matter how hard I run it, ac or not), instead of the 5 or so that it could get to before. I dont know what the bars indicate as far as temps, but this is a significant drop.

Fergus: sucks about your hg. Definately do the drain/flush, use ww, make sure their are no air bubbles and that watter is flowing, put a thermo in(even though lack of one will not cause overheating, its just a good thing to have in the system). You can get one that will "fail" open if you are worried about it. Make sure coolant is flowing through the system, and that the fans are coming on at appropriate times, and find some way to measure the temperature of the engine to do tests, and dont run it too hot. Otherwise, do some research on the system, make sure you know the ins and outs. Good luck

[drifter_for_life06]

im gonna jsut get a STANT thermo i guess

oh and if i came off as saying you were wrong about RWW, id didnt meant o, i was just saying that its a great product and does more than claim...thats all

[fatboy]

My personal experience: In texas, its been 100 for awhile during the day, and sitting in traffic not moving or going 5 mph with the ac on would cause my car to come 1 bar away from the "H". I flushed and drained the system, using about 70% water, 30% cooland and ww. I can get away with using less coolant because I have no fear of it freezing. Now it will not go above 2.5 bars(no matter how hard I run it, ac or not), instead of the 5 or so that it could get to before. I dont know what the bars indicate as far as temps, but this is a significant drop.

yea, i live in louisiana. i never have to worry about freezing so i run my mix roughly 80%water 20% coolant. never have to worry about over heating

[ddgsxr504]

If you get a therm don't get a stant, they suck. When I bought one a long time ago it came with a gasket to re-seal the angle neck that the radiator hose clamps on to. Yeah didn't fit so I had to go buy blue gasket maker instead. Unless it's something exteremly expensive always try and get it from the dealer or get a Nismo one.

Oh and a few reasons a car runs a thermo is because your engine needs to run at a certain temp to burn fuel in the combustion chamber and for other emissions related crap on the car. If you run your car without a thermo the decreased temperature of the block doesn't completely burn the fuel and you will get deposits in your engine faster. I am sure there are more reasons but these are all I can think of right now!

[InsanityInc]

The thermostat doesn't really regulate your coolant much at operating temperatures. The purpose of the thermostat is to let your engine get to operating temp quicker by not recirculating the coolant already in the engine until it reaches a certain temperature.

You also shouldn't use redline water wetter if your coolant system is working adequately, as making your coolant system that much more efficient will reduce your engine's power, since the combustion chamber will use more heat to heat itself and the coolant as opposed to increasing pressure to drive the piston. A engine should be as hot as it can stand without blowing up for maximum performance.

[ddgsxr504]

Thanks Insanity, you pretty much told them what I was trying to say but in an easier way. Thanks!

[naed240sx]

The thermostat doesn't really regulate your coolant much at operating temperatures. The purpose of the thermostat is to let your engine get to operating temp quicker by not recirculating the coolant already in the engine until it reaches a certain temperature.

You also shouldn't use redline water wetter if your coolant system is working adequately, as making your coolant system that much more efficient will reduce your engine's power, since the combustion chamber will use more heat to heat itself and the coolant as opposed to increasing pressure to drive the piston. A engine should be as hot as it can stand without blowing up for maximum performance.

yeah, but for a cheap fix of a very mildly overheating car, ww is great. My cooling system works fine, but in 100 degree weather, full ac, surrounded by a bunch of other cars with no airflow, it would get hot (not boiling). Alot of older cars are gonna have issues. Better to have your car not make quite as much power than have something blow up.

[drifter_for_life06]

anyone knwo how much a thermo is from Nissan?

[fatboy]

thermo's are cheap

[Fenvy]

The thermostat doesn't really regulate your coolant much at operating temperatures. The purpose of the thermostat is to let your engine get to operating temp quicker by not recirculating the coolant already in the engine until it reaches a certain temperature.

You also shouldn't use redline water wetter if your coolant system is working adequately, as making your coolant system that much more efficient will reduce your engine's power, since the combustion chamber will use more heat to heat itself and the coolant as opposed to increasing pressure to drive the piston. A engine should be as hot as it can stand without blowing up for maximum performance.

what is the defination of overheating? 100C? 120c?

[GrubyFngaz]

Around $50 I believe. I did mine a couple months ago, but I can't really remember.Josh

[DRIFTEADOR]

$50? thats a hell of a mark up. i paid $15