Water Valve Question
Thread Starter
Racer
Joined: Feb 2001
Posts: 377
Likes: 0
Water Valve Question
Hi all...I picked up a hot water valve (GM #3984641) for my '69 L46 w/o AC. It looks just like the one in the AIM but, I have a hard time telling where it mounts on cars w/AC. It looks like it goes on the motor box, but I'm not sure.
Additionally, it's supposed to go inline with the core inlet, 3/4 hose, but it, and all the valves I look at, fit better on the 5/8 hose. Can anybody elaborate on this please.
Thanks
Additionally, it's supposed to go inline with the core inlet, 3/4 hose, but it, and all the valves I look at, fit better on the 5/8 hose. Can anybody elaborate on this please.
Thanks
Instructor
Joined: Aug 2001
Posts: 130
Likes: 0
From: Yorba Linda, CA
Re: Water Valve Question (Jon69L46)
Jon,
On my '69 427 with A/C the water valve mounts on the RH side of the heater box. Here's a picture through the #3 (from the front) RH side "gill". Look closely in the AIM in the UPC C60, D6 section for the detailed hose routing.
Don
On my '69 427 with A/C the water valve mounts on the RH side of the heater box. Here's a picture through the #3 (from the front) RH side "gill". Look closely in the AIM in the UPC C60, D6 section for the detailed hose routing.
Don
Thread Starter
Racer
Joined: Feb 2001
Posts: 377
Likes: 0
Re: Water Valve Question (Don O'Connell)
Hi Don, thanks for the reply. Yeah, page 345 I'm looking at it now. Inline with the top pipe. But location still leaves me a little bewildered. Also the 3/4' hose thing. Seems like the water valve is best suited for a 5/8" hose. Are your's 3/4" in and 5/8" out of the core?
Thanks for the pic.
Thanks for the pic.
Instructor
Joined: Aug 2001
Posts: 130
Likes: 0
From: Yorba Linda, CA
Re: Water Valve Question (Jon69L46)
Jon,
Interesting, C60 D6 is page 342 in my AIM. On my car the 3/4" hose goes from the water pump to to the brass expansion tank. From the other side of the tank the 3/4" hose goes to the heater core. My 5/8" hose goes from the intake manifold to the water valve and from the other side of the water valve to the the heater core.
I replaced my hoses last year with a set of molded hoses I got from Dr. Rebuild.
Don
Interesting, C60 D6 is page 342 in my AIM. On my car the 3/4" hose goes from the water pump to to the brass expansion tank. From the other side of the tank the 3/4" hose goes to the heater core. My 5/8" hose goes from the intake manifold to the water valve and from the other side of the water valve to the the heater core.
I replaced my hoses last year with a set of molded hoses I got from Dr. Rebuild.
Don
Thread Starter
Racer
Joined: Feb 2001
Posts: 377
Likes: 0
Re: Water Valve Question (Don O'Connell)
Thanks Don , I guess that makes sense in terms of the size of the tubes on the valve. I thought the water flow direction was "in" the 3/4 side from the pump, and out 5/8 to the manilfold. I thought putting the water valve inline with the 5/8" would leave hot water in the core. Thanks for the clarification..I think.
