Technical Plumbing hot water intake lines

Wanting pictures of how/where you have done it. I know one line goes to the thermostat. The other to the heater hose(?). Wanting mine to look neat; not an after thought.

Thanks

 

On my coupe with an open engine bay I didn't want the rubber heater hoses running across the top of the engine so I ran them in stainless steel to the back of the engine then a short rubber hose to a fitting on the firewall through to the heater. Supply came from the water pump and the return dumped into a water fitting on the manifold.

 

What are you working on?

I ran the hoses on my '57 over to the inner fender and back to the firewall. Not much different than stock except perhaps longer and tucked in tight.

 

Keep in mind, there is a right way to connect the hoses to your heater system. See diagram.

Note the inlet to the heater core is from upstream of the T-stat. You will get the most efficient heating this way. For that hose, there is a hose made for Fords I used that has an "L" molded into the hose. Sorry, I cannot remember the part number, but it makes a clean transition off the intake to the side of the engine. Looks kinda like the attached image.

Hope this helps a little.

 

Its for a GMC 302 6cylinder.....

 

That helps! Try this image. Same principal applies. Hose labelled 6 is the one that goes to your heater core first. Maybe I should clarify: this assumes you have a heater shut off valve in your system, be it vacuum operated or electro-mechanical. That valve is typically in the heater supply hose.

 

Heater cores usually have two size hoses- a 5/8" supply and 3/4" return

 

Are you talking about the heater core hoses or the heated intake hoses? On my 250 straight six I ran a hose from right under the thermostat to the intake and then to a water port low on the block on the drivers side.

 

The KEY is keeping the lines close to the block, AWAY from the headers. I T-eed off 5/8" heater hose with a steel fitting with a 3/8 (I think) nipple from Carquest - found in the picture section of their catalog. Just used rubber fuel line, no issues after 10+ years on my 235 with Langdon's kit. Hardest part was finding the STEEL nipple, didn't want to trust plastic! Good Luck, Tim

 

Local builder had fittings made to run the new smaller high pressure hoses. He has used 3/8's for heater hose. Makes I it easy to twist and turn as needed inside the car. No issues.

 

His title on the thread refers to the intake manifold.

 

Thanks 4 the advice

 

Ok jut to clarify-Guess I was sleeping when I started this post.
gmc302 6cylinder engine Clifford carburetor intake water heat lines

 

When did Clifford cast a water heated intake ?

 

"the quick throttel response, and great economy with Jack's High Flow Intake Manifold."

"It has a water jacket cast into the base of the Manifold to atomize air and fuel unlike the stock intake that sat on the exhaust for heat"

 

That's what I thought, but everybody was responding with heater hose routing.

 

Here's a pic of mine. This was the cleanest way I could do it using the shortest hose I could. You can see it coming from the thermostat housing to the intake and then going to the lower port on the engine block. Maybe your jimmy has the same block plug?

 

Yes, I noted that, as well.

 

I think you have it. It hooks up the same as the heater core would. If you are going to run a heater I'd run the outlet hose from the engine to the manifold heater, then run the hose from there to the heater core and the return line from the heater core back to the water pump. It will take a couple of minutes to get full heat out of the heater on cold days as you will be warming up the intake first but that shouldn't be a big issue.

 

Thanks for the advice and pictures do help!


Sent from my iPhone using The H.A.M.B. mobile app

 

Click and scroll to bottom of page.
http://www.langdonsstovebolt.com/tech/why-you-need-to-heat-your-intake-manifold/

 

Someone mentioned there is a place on the block that I can use for a water line? I understand about the place on the thermostat housing. Thinking of using copper lines for a cleaner look. I am not found of the idea of running a water line around the back of the engine to t into the heater hose.

 

Can I use either of these places for the "block" port? They are both on the drivers side.

 

This is the 270 that I am swapping out for a 302.

 

Usually, but not always. Have seen a bunch of them that both hoses were the same size.

And as to plumbing the core, lots of them have side by side inlets instead of stacked ones. Don't know if it makes a difference on plumbing them....

 

That square head plug is to the oil gallary . . . You probably don't want to use that for heating your intake manifold.

 

Buy new freeze plug , weld a bun in , pick a location and install,
Then use tubing or copper ,go down under block .
No body said that it has to go around front or top ,
You can make it look clean and nice if you think about it !!

 

I tried the water heat and eventually went with exhaust heat .
I found the water too slow to heat , meaning running choke longer .

The exhaust heat to my manifold is also a little hotter , which made it work a bit better .

 

Don't have that option with Cliffords' Headers...

 

You can get Creative !!