arrrgh coolant boiling after koyo radiator/slim fan install...

i've let the air out numerous times, but the car still runs way hotter than it did when i just had the stock fans and radiator...

the thermostat opens and closes...

i drive around today and after 15 minutes or so the coolant starts to boil in the overflow...

https://honda-tech.com/zerothread?id=1659502

 

I had the same problem after my koyo/slim fam install. checked radiator cap, thermostat and it would start overheating after all the coolant either got eaten up or boiled out. Turned out to be headgasket for me.

leakdown test?

 

try a greddy radiator cap or somethin like that. is ur rad cap in good shape? also try takin out the thermostat, better flow of coolant. hth

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sir boostalot &raquo;</TD></TR><TR><TD CLASS="quote">I had the same problem after my koyo/slim fam install. checked radiator cap, thermostat and it would start overheating after all the coolant either got eaten up or boiled out. Turned out to be headgasket for me.

leakdown test?</TD></TR></TABLE>

i dont see how changing my radiator would blow out my head gasket as it wasnt blown before the swap...


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JisatsuGuy &raquo;</TD></TR><TR><TD CLASS="quote">try a greddy radiator cap or somethin like that. is ur rad cap in good shape? also try takin out the thermostat, better flow of coolant. hth</TD></TR></TABLE>

thats the thing, the guy i bought the radiator fan sold it to me with a fluidyne cap...i'll do a search and make a new thread if a koyo radiator neeeeds a koyo cap.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spec R &raquo;</TD></TR><TR><TD CLASS="quote">i dont see how changing my radiator would blow out my head gasket as it wasnt blown before the swap...cap.</TD></TR></TABLE>

True, in my case I was already boiling out coolant before the radiator swap. Was it a used radiator?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sir boostalot &raquo;</TD></TR><TR><TD CLASS="quote">

True, in my case I was already boiling out coolant before the radiator swap. Was it a used radiator?</TD></TR></TABLE>

yes, i really hope this isnt the culprit. getting gypped wouldnt be cool right now.

 

Sounds like some debris may be stuck in the radiator and not allowing adeqate flow.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by msmotorsports &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like some debris may be stuck in the radiator and not allowing adeqate flow.</TD></TR></TABLE>

how could i determine this while the radiator is in the car?

the whole assembly gets hot, so i dont know.

i also picked up a genuine koyo radiator cap.. the heating continues