as the topic title states..

im running a b18a, homemadeturbo setup, koyo half size aluminum radiator.

could the problem be my cheap .9 bar cap?

i changed the thermostat about 5k miles ago with an oem unit.

any help is appreciated, tia

 

sounds like there is air in the system

 

whats the best way to get it out? run the car with the rad cap off and undo the bleeder screw on the head?

 

i run the car without the cap on to bleed my system.

 

does the heat have to be on?

 

Dude, on all the cars that means one thing - old radiator hose. Get a new one from NAPA.

 

leave radiator cap off. it wont hurt to leave the heat on i dont think. once the bottom radiator hose is hot and the thermostat is open you gently squeas the hose to get the air to bubble out of the top. the radiator fluid should be getting low no. add fluid every time it gets low. repeat till no more air is in there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Oleg &raquo;</TD></TR><TR><TD CLASS="quote">Dude, on all the cars that means one thing - old radiator hose. Get a new one from NAPA.</TD></TR></TABLE>

thats what i was thinking.....
and when bleed hondas, i put the front on jack stands, and run with the cap off, heat on till the fan cycles.

 

get a new hose, add coolant, then run the car with the cap off at 3000 rpms till the thermostat opens, squeeze radiator hose to push coolant into the water jackets and all that good stuff, add coolant as needed, then add into coolant resovoir to max line on the resevoir

 

It means either:
A. bad radiator cap. (not allowing coolant to be pulled from your over flow bottle when the engine cools down.
B. blockage in the hose between your over flow bottle and the nipple on your radiator fill neck.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MassScene &raquo;</TD></TR><TR><TD CLASS="quote">leave radiator cap off. it wont hurt to leave the heat on i dont think. once the bottom radiator hose is hot and the thermostat is open you gently squeas the hose to get the air to bubble out of the top. the radiator fluid should be getting low no. add fluid every time it gets low. repeat till no more air is in there. </TD></TR></TABLE>

whenever i try that method my coolant starts to come out...what am i doing wrong

 

once filled you bleed the system with the cap ON.. you do need the front in the air.. (jackstands or big hill)

 

Honda intended the cooling system to be bled as follows:

Open bleed screw
Open heat control (full heat inside car)
Fill radiator until bleed screw flows coolant alone (no air/bubbles)
Close bleed screw
Put on radiator cap
Fill overflow bottle to "max" level
Run engine to operating temperature

That's it, you're done.

Now when the engine cools 100%, if there are any air pockets in the cooling system, they will purge themselves and the coolant in the overflow bottle will be drawn into the cooling system to take the place of the air. If you do this without having the heat turned on inside the car, chances are you'll have some rather large air pockets in the heater core, and they have a much more difficult time purging themselves out.

 

wat if you have no heater to turn on???