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10-25-2020, 10:14 PM | #1 |
Registered User
Join Date: Dec 2013
Location: Seattle, WA
Posts: 155
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Any one using a tank or coolant type heater
I'm wondering how you have it hooked up? I bought a katz 800 watt heater this summer, and it's not working all that well. My newly this summer purchased 90 gmc has become my daily driver work truck, and It's getting cold. Tonight will get down to 12 degrees, I would like to plug in truck and have the thing warm up quicker. I no longer live in Seattle, before you start wondering why I would like a coolant heater for the truck.
I also have an old tank heater on my 1970 gmc k2500 and it works very good. But that heater pulls in coolant off the bottom of the block, through the heater and into the top of the intake manifold warming the block very well. The issue I have on my 90 gmc is the heater has 5/8 nipples and a 5/8 y fitting. So I have the heater drawing in coolant off the bottom of the engine block, through the heater into the y fitting and into the 5/8 heater core hose. Instead of the coolant going through the heater core and and into the top of the manifold, the heated coolant is going back through the y fitting and into the radiator, and only the radiator. I guess the radiator is higher than the heater core? I see a few plugs on the top of the intake manifold, one behind the tbi and one in front. I'm wondering if one of the plugs is a coolant passage? The other option could be to buy some kind of 3/4 to 5/8 fittings and tap into the 3/4 heater hose that comes off the top of the manifold. I haven't seen any good options for those adapters and I would like to avoid having a bunch of clamps and adapters. Any advice would be appreciated, thanks.
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1970 GMC K2500 aka MaTeR 2007 Chevy Silverado 1500HD Classic |
10-26-2020, 06:30 AM | #2 |
Registered User
Join Date: Oct 2015
Location: PNW
Posts: 3,498
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Re: Any one using a tank or coolant type heater
You made me panic for a minute there. 12 degrees! I'm in Seattle and thought how did I miss that? I better get out and cover my hose bibs. Wish I could be of help on your truck heater. I've never had to use one. Good luck!
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10-26-2020, 07:07 AM | #3 |
Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,453
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Re: Any one using a tank or coolant type heater
It’s been over 20 years, but I had a block heater on an 83 Grand Prix with a 350 if it matters. But my father had it put on cause I was still stationed in Japan. He got it at Napa, and even when it was well below zero, the car would always start without even touching the gas. By the time I started the car, turned heater on, got out to take care of the extension cord, and got back in, it was warm already. It hooked up to either a soft plug or port on the side of the block don’t remember, and then went to a heater hose. I wanted to keep it but was getting crusty by that point, plus weren’t really all the expensive...
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