coolant leak from head?? help

[79620kc]

hey guys me again really need help...the fixture where the coolant comes out of the head on my l20b and goes to my heater core is leaking and its bc the metal is shit and rusted...does this have to be replaced??or can i just find a plug for it that fits bc my heater core is fucked anyway..

[Z-train]

You can plug it.However,it's better if you don't and connect it to the hose that runs back from the lower waterneck.

[79620kc]

and the lower waterneck would be?? lol

why would it be better not to plug? jus curious

[banzai510(hainz)]

The metal L outlet from the head.? the the heater pipe is leaking? I assume the hoses are good first!!!!!!!!!!

Buy a new one.

 

PB Blaster it for a few days then loosen it and replace with a new one. L outlet. i carry spares myself at home.

 

Why would you want to plug it and not run a heater.

Dont be CHEAP buy a new one

[ggzilla]

If it's rusted enough to leak, it may break when you try to remove it.

 

One common problem is rust buildup on the outside of the fitting, that breaks the seal of the rubber-to-metal contact. So remove the hose and clean it up. Be sure to clean inside the end of the hose too. Problem solved?

 

It is not better to use a plug or not use a plug. But your heater won't work if you plug it. Plug does not affect the engine (when the heater lever is on the cold side, the heater hose flow is blocked and it doesn't hurt the engine).

[79620kc]

my heater doesnt work anyway thats the thing

the L outlet is the problem the top where the hose connects is rusted away which is why it is leaking

idk what to do... i think plugging it would be easier not cheaper...jus dont use the heater anyway..when i first saw that it was leaking i replaced the hoses all the way to the heater core and they were FILLED with crud and i mean FILLEDDDDDD so i thought that was the problem but appearently not

[79620kc]

????????

[ggzilla]

Plug it.

[Stoffregen Motorsports]

You can plug it.However,it's better if you don't and connect it to the hose that runs back from the lower waterneck.

 

I wouldn't run a hose between the two. Plugging them off is better. If you connect the two it creates a hot spot in the coolant circulation.

 

But the right fitting is only a couple bucks. Replace it and buy a heater core.

[Z-train]

Plugging it off creates the situation where the only flow is from the block to the head.Now,is blocking it off a big deal?No.But the more circulation the better.

[datzenmike]

FWIW when the heater is shut off there's no circulation all summer anyway.

[banzai510(hainz)]

key is find where the heater valve is and manual open it with your hands and not the lever up top. Sometimes they get stuck.

 

as GGzilla said maybe you could wire brush it and it will be Ok then reclamp it

[MikeRL411]

Whenever I replace a coolant or heater hose I first lube the fitting and the first one inch of the hose with silicone grease. Just a wipe, don't overdo it! Aids the seal and allows for easy disconnect when you are checking or replacing the hose / fitting. Too late to help the current situation but plan ahead.

[dotdat]

Whenever I replace a coolant or heater hose I first lube the fitting and the first one inch of the hose with silicone grease. Just a wipe, don't overdo it! Aids the seal and allows for easy disconnect when you are checking or replacing the hose / fitting. Too late to help the current situation but plan ahead.

 

A great tip !! Thanks much.