Milkmn42

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...

Milkmn42

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. ????

Digi7ech

iTrader: (1)

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.

SirCygnus

iTrader: (1)

fill the radiator with the engine running.

Milkmn42

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?

SirCygnus

iTrader: (1)

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

Milkmn42

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

texFCturboII

iTrader: (17)

or an air pocket. and a vacuum leak.

Milkmn42

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.

magus2222

iTrader: (22)

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

misterstyx69

iTrader: (142)

is the thermostat installed correctly?

Milkmn42

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.

SirCygnus

iTrader: (1)

then there is a clog in the system.

where you experiencing these problems before you swapped radiators?

Milkmn42

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.

Milkmn42

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....

SirCygnus

iTrader: (1)

so that plastic piece exploded?

was there snot in there? what happened?

Milkmn42

SirCygnus

iTrader: (1)

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

clokker

iTrader: (2)

No, it doesn't.

Milkmn42

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.

Milkmn42

heehee $113 from mazda dealer...

magus2222

iTrader: (22)

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

Milkmn42

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

SirCygnus

iTrader: (1)

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/

Milkmn42

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