Bond007

What is the easiest way to bypass the heater coil, have to replace it, but do not need it until fall.
Thank You

'75

You can hook the two heater hoses together, or just remove the hose nipples from the water pump and intake manifold and install pipe plugs.

HeadsU.P.

Because one heater hose is 3/4 and the other is 5/8 you need an adaptor to attach both ends of the hoses together and hide it down by the firewall. That will by-pass the core.
Try dormanproducts.com Its a black plastic unit with both size nipples on the end. You can order it at your Auto-Value store in your Yooper land town.
Tell em you want p n 47080.

drwet

This is what I used when my heater core started leaking. It was just cobbled together from stuff I had on hand at the time.

I carry it with me on long trips in my emergency tool kit. Its just a matter of time until I need it again.

olelucky

Kacyc3

$1.60 each

ddawson

If you go to ebay you will see a lot of LS1 bypass hoses. They are U shaped 5/8 to 3/4.

I bought this one.
https://www.ebay.com/itm/LS1-LS2-LS3...ss!95616!US!-1

derekderek

Even when you don't need a heater core the water valve does not shut off all the way. Always some hot coolant raising interior temps. This should be done on virtually every vette but maybe Priyas...

jhopper408

I put a shut off valve on mine. It shut the water off flowing through the core. The only reason that I did this, Is because it gets too hot in the car.

calwldlife

i looped the hose by getting a fitting to make both the mani and the pump hose size the same.
water circulates and becomes a bypass of the thermostat.
i figured it is best for the pump and getting water flowing thru the heads
for more even temp.

JoeMinnesota

Interesting - I think I might do this. Which hose did you install the shut-off into, or doesn't it matter since it's a loop? Hose coming out of the pump?

Thanks, Joel

Wrecked82

See below. Red shutoff valve on one hose on left. Other one is below the large covering on a/c hose. You can just barely see it, but it is there. Turn off during all but coldest of days in Houston, which is about 1 or 2 days a year.

JoeMinnesota

oVoSanto

this is what I did:

Street Rat

I ended up putting these valves in my heater hoses. It gets about 100 degrees here during the Summer. No need for a stinking heater.

Bond007

[QUOTE=Street Rat;1597231350]I ended up putting these valves in my heater hoses. It gets about 100 degrees here during the Summer. No need for a stinking heater.




Where did you buy the valves

dmaxx3500

you need the flow,,make a loop from the w/p to the intake

derekderek

there is a LS loop hose the right 2 end sizes. but if you needed the flow, how does chebby set up a shut off for when the outside air temp is highest?

Street Rat

[quote=Bond007]I purchased the parts at McMaster-Carr. They have quite a selection there.

Wrecked82

This is my second replacement in 250K miles. First one was like this one before I took it apart and reclocked it. Not hard to do, but not exactly easy either. Getting the bushings back in properly. This one was not re-clocked. Connectors just long enough to reach and fit. Done by one of the very better shops in the area. They do things right or don't do it at all. Good observation.