replaced radiator (help please)

[S14K]

well today we replaced a new radiator for my friends 240. i was wondering if there was a certain procress when putting coolant into a new radiator because after we have put it on we poured coolant and then we started the engine an poured more coolant. we then tested the car an it overheated like hell. is the cause of this from air bubbles in the coolant or did we do something wrong. oh yeah i forgot to mention his engine is an rb20.but yeah our guy that usually works on our cars is out of the country right now, and we dont really know that much.can anyone help us out please thanks

[Tims_240]

coolant as in you didnt put any water in the radiator at all?

[driftking777]

did you originally replace the radiator because of over heating...if yes, you might want to replace your thermastat...

[TatII]

the proper way to put coolant in the 240 is to raise the front of the car up so the radiator cap is the highest point of the whole engine. this ensures that all the bubbles comes out when you pure the coolant in. also if your bleeder screw is not stuck like mine lolz you losen it and take the whole thing out. pure coolant till coolant starts to pure out continously out of that hole. not just bubble out. then close bleeder screw, then let all the bubbles bubble out of the radiator with the car still jacked up. becsue when it seems full, and after all the bubbles comes out, you can still pure like another quart of coolant in, then finally when its truely full. close the cap, and lower the car. then turn on your heater to full blast with the engine on. this way all the coolant will circulate into the heater core. let it reach operatiing temp which will generally take 15 minutes. then shut engine off, and let it cool off. do not take off the radiator cap until its completely cooled off, I REPEAT DO NOT REMOVE A HOT PRESSURIZED RADIATOR CAP. however if your really really annsious then you can get away with it by waiting around 15-20 minutes, then take a big big and thick towel and cover the whole cap and slowly twist open and keep the cap pressed down so that the coolant will shoot up all over your face. and the towel will absorb all the coolant thats shooting up. BEWARE. after the coolant cap is removed, you should be able to pure alittle more coolant in the radiator. fill then your good.

[S14K]

Originally Posted by Tims_240

coolant as in you didnt put any water in the radiator at all?

we bought premixed coolant

[S14K]

Originally Posted by driftking777

did you originally replace the radiator because of over heating...if yes, you might want to replace your thermastat...

no it wasnt becuase of that. he just wanted to replace his radiator. it wasnt overheating before

[Hit_N_Run-player]

id try what TatII said, it sounds like he knows what hes talkin about!!

[TatII]

yes i find it very odd that i took all my time to describe everything step by step and no one bothers to read it. next time i'll just sit back and not type anything as it seems some people are too lazy to read and is looking for quick solutions.

[D-Bo]

Originally Posted by TatII

yes i find it very odd that i took all my time to describe everything step by step and no one bothers to read it. next time i'll just sit back and not type anything as it seems some people are too lazy to read and is looking for quick solutions.

i read it, and i hope that gives you some kind of tingly feeling.. just jokin around.. if i were to give advice then it would have been identical to this.. i did i-4 and v-6 block heaters at work all the time and some of them (mostly the v6's) required me draining all the coolant.. i would say make sure that there are no leaks that spray onto the engine (which would burn it up), although that would most likely be very obvious, understatement of the year.. try it again..

1) pour it to the top with the engine off and cool
2) turn it on, with the heat on full
3) it'll bubble down slowly, keep adding more
4) you can even pinch the hose gently to get the air out

i don't know anything about the bleeder screw for 240s, but i think if something like that were malfunctioning, you'd notice but maybe i'm wrong..

its time consuming but a critical part of the engine

and if it was overheating before, and the new rad does't help, then its the least of your problems

[TatII]

with most cars refilling hte coolant is as simple as pure and go. but the 240 for some reason is a bitch to get all the air out. most people who don't do the procedure that i said will have air pockets in the coolant system and it will over heat.

[ExTrEmEDrIfT]

hmm well if it still over heats after u get all tha bubble sout ide check the thermostat or even tah radiator cap both them will cause it to overheat..

[AWDSR20]

TattII man ur deatail oriented huh? nice write up! i actually read the whole thing, whell writen.

kudoz!

[AWDSR20]

TattII man ur deatail oriented huh? nice write up! i actually read the whole thing, well writen.

kudoz!

[AWDSR20]

sorry..don't know why it came out 2wis!

[S14K]

thanks for the help it seems to run normal now. i think it was just air bubbles