the rx8 forums are very helpful an im needing some help again. i just changed my exhaust manafold an 02 sensor, and my radiator, now im having a problem. my car is getting very hot and im thinking the coolant isnt flowing threw the car. any suggestions of what to do greatly appreciated. also the headers are getting very hot an the coolant starts to boil

 

Is there enough water in it - ie is all the air purged out yet ?

Did you fit the foam surrounds around the radiator ? very important to prevent air bypassing the rad .

Headers will get hot cuz they have no heat shielding - consider making a heat shield for them

 

ok i guess i gotta do some more searching i have no foam an didnt purge anythin ? lol i just read the manual an it says to add coolant then run the car aat 2500 rpm for 5 min an coool it down an add cooloant. but i cant do that cause within like a min the car gets extremely hot

 

do what the manual says ensuring that the header tank is full before you start - and keep an eye on the level .
Also turn the heater to full heat so the heater radiator gets purged .

 

Sounds like you have an air bubble in the system.

 

its a mishimoto aluminum radiator so does it need the foam **** still

 

Depends on whether you want worse cooling than stock or better ................

 

also i disconected my a c from my car. right now all i took off was the front cooler thing for it so idk if i gotta cap that off or what , if that even has anythin to do with the problem

 

sorry to ask these stupid questions this was my first tuner car an i been tryin to do everythin myself. this was a very hard first car to start tuning to but im gettin better thanks for any help il try the purging tomorow

 

I think disconnecting the ac rad will allow all the gas to leak out which means you would need to re-gas should you want your ac back . Make sure you take off the AC belt if you are going to run it like that or you will toast the ac pump .

Can't see it affecting cooling though .

 

got it thank you. so running the heat full blast while doing the rpm thing will bleed the air out ? or is there anything else i gotta do to get air bubs out

 

/\ there is a proceedure for doing it but i can't remember what it is - do a seach in diy thread for "change coolant" or similar

 

Hahahahahaha



OP how did it go?