I installed a godspeed radiator in my 91 na the other day. now the lower hose doesn't come close to lining up. anyone else have such issues? please help...

 

ok so i got it in and plumbed. but its overheating, i replaced the thermostat while i was in there. top hose is hot and lower is cold. ????

 

Check for air pockets. First time I cranked over my motor it was fine till I drove around the block.
I huge pocket of air was in the engine.

Aftermarket radiators usually need a little trimming on the hoses but I would assume the cheap ebay ones may require more due to quality control.

 

fill the radiator with the engine running.

 

yeah ive done both, it idles up to 2000rpm then drops to 1000rpm and then back up to 2000 and so on and so on. the upper hose is crazy hot and the lower is cold. im thinking blown coolant seal...after i pulled the new thermostat off thinking it wasnt opening to find it open. any thoughts?

 

dont jump to conclusions. its probably something very very simple.

 

my only other thought would be the water pump...

 

or an air pocket. and a vacuum leak.

 

well, ive ran it with the radiator top off, heater on, for 10 min. then refilled it and replaced top. the upper hose looked as if it was expanding. was under alot of pressure.

 

blocked passageways in the radiator? typically the lower hose is hot while the top hose is cold. that would tell me that the thermostat is stuck, but top hot, lower cold?
personally, id rip everything apart and start over, new thermostat, rad cap, all new seals. check passageways and make sure nothing is clogged.............

Lloyd

 

is the thermostat installed correctly?

 

yeah i double checked the thermostat, i truely thought it wasnt opening. but after i ran it 20 min and "got all the air out" it was still over heating and the upper was swelling and hot, so i pulled off the housing while it was still hot to find the thermostat still open.

 

then there is a clog in the system.

where you experiencing these problems before you swapped radiators?

 

i attempted getting all the air out of it. i believe i have, its not running hot. but i need a new coolant sensor, the old one is too small. the whole plug actually fits in the hole of the Godspeed radiator. any thoughts? thanks for all the help thus far Gents. much appreciated.

 

So I thought all was good....drove around for 20 min, all was fine. Jumped on highway headed to work and blew the snot out of my thermostat housing/neck....

 

so that plastic piece exploded?

was there snot in there? what happened?

 

 

get a new piece, or get a piece from an s4. bolts right in i believe.

 

No, it doesn't.

 

the s4's have 2 screws, s5's have 3....the cool thing about this part is that i cant just get it from autozone or advance.

 

heehee $113 from mazda dealer...

 

so, since you have to redo the neck, just redo the whole front water pump cover to the block....trust me, just start over. get rid of the headaches

Lloyd

 

well im hoping to do a engine swap to a s5 turbo. this is just to last me til i can experience more headaches of swapping engines to the t2

 

it sure does. there is an extra bolt hole, and it depends on the thermostat you use.

or just get a metal replacement.

http://www.rotary13b1.com/p/1245/

 

your saying use a s4 2 bolt with gasket on my 3 bolt s5 non gasket?