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10-21-2007, 07:59 PM
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#1 |
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Registered User
Join Date: Jun 2007
Location: NW Pennsylvania
Posts: 92
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Need more heat
Northwestern PA winters are cold and I need more heat. Aside from possibly having critters taking up residence in the heater core box and restricting air flow with a nest, I'm wondering if my hose configuration is keeping the heat from the cab.
Right now, one hose goes from the intake to the heater core; the other hose is connected to the right side of the radiator. Would I get more heat by moving the hose from the radiator to the water pump port? ~ Dave |
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10-21-2007, 08:01 PM
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#2 |
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Dark Heart Motorsports
Join Date: Apr 2007
Location: 29404 DKFX
Posts: 683
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Re: Need more heat
go with a bigger thermostat, if you are running a 160, go to a 180, if running a 180 go to a 210... that always allows more heat in
__________________
How Deep Can YOU Bleed..? 1985 Chevy Blazer K5- 6.2 N/A, 400 turbo trans CUCV, 12v converted... a new chapter 2005 GMC Sierra Crew Cab 6.0 powwwaa!!! custom jumpseat install w/ captain seats, Hypertech tuner, MSD Blaster Coils, CB and twin antenna's, all electric interior, touch screen in dash. custom center console, with jump seat replacing original console. 1500 HD! |
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10-21-2007, 08:14 PM
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#3 |
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Senior Member
Join Date: Jul 2003
Location: Indianapolis, IN
Posts: 1,277
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Re: Need more heat
You might also try pulling the heater box off from inside the cab and take a look at the flapper doors. I froze all last winter in my truck.
This summer I pulled the heater box to replace the leaky core and found a broken plastic connector on one of the heater doors that prevented correct airflow. I replaced it and now the heater works like a champ. I didn't take any pictures, but it is painfully obvious when the box is removed. I found a replacement for the broken plastic part at the dealer for a few $. My truck has the heater is connected to the radiator and the water pump. Last edited by beaterC10; 10-21-2007 at 08:15 PM. |
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10-21-2007, 08:18 PM
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#4 | |
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Registered User
Join Date: Jun 2007
Location: NW Pennsylvania
Posts: 92
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Re: Need more heat
Quote:
~ Dave |
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10-21-2007, 08:15 PM
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#5 |
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Registered User
Join Date: Jun 2007
Location: NW Pennsylvania
Posts: 92
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Re: Need more heat
If I use higher than 180 the ol' 406 runs too hot.
I still wonder if my hoses are correct. ~ Dave |
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10-21-2007, 10:16 PM
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#6 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,277
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Re: Need more heat
test the door on the panel and make sure its working you should be able to hear it closing when it seals
__________________
Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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10-22-2007, 03:32 AM
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#7 |
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Registered User
Join Date: Feb 2007
Location: Austin, TX
Posts: 3,930
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Re: Need more heat
When exactly should those doors pull shut or be open ? Just wondering so when I get my A/C going again I can make sure they work when they should.
Last edited by Pyrotechnic; 10-22-2007 at 03:32 AM. |
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10-22-2007, 04:58 AM
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#8 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: Need more heat
The hose routing is correct. The return is to the radiator. The supply is from the intake. Yea wierd but that is how my truck has the hoses routed.
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10-22-2007, 11:00 AM
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#9 |
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glamoros piece o' lowlife
Join Date: Mar 2007
Location: Redford, MI
Posts: 1,164
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Re: Need more heat
Do a reverese-flow heater core flush, there may be some deposits in there that prevent coolant flow that you can possibly dislodge and blow out through what is normally yer supply port.
__________________
The more I drink, the more I drink, the more I drink... diesel, reg cab, long bed, 4 across the rear, single stack, wooden stakes, and lotsa lights - the Hay Express |
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10-22-2007, 01:38 PM
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#10 |
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In the Forgotten far North.
 
Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
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Re: Need more heat
Something else you can do as well is get a piece of cardboard big enough to block off the lower half of the radiator and place it directly in front of the radiator thus cutting its cooling capabilites in half.
__________________
1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade |
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10-22-2007, 02:22 PM
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#11 | |
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glamoros piece o' lowlife
Join Date: Mar 2007
Location: Redford, MI
Posts: 1,164
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Re: Need more heat
Quote:
__________________
The more I drink, the more I drink, the more I drink... diesel, reg cab, long bed, 4 across the rear, single stack, wooden stakes, and lotsa lights - the Hay Express |
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10-22-2007, 07:05 PM
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#12 |
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Registered User
Join Date: Jun 2007
Location: NW Pennsylvania
Posts: 92
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Re: Need more heat
I think I'm going to try several of these suggestions ... winter is coming up faster here. It was near 80 today, but will be in the 30s by the weekend!
Thanks, I'll keep ya'll posted! ~ Dave |
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10-25-2007, 12:07 AM
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#13 |
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Registered User
Join Date: Oct 2006
Location: iowa
Posts: 722
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Re: Need more heat
you'll laugh but i had the same issue in my 4x4 and once while i had the dash pad off i turned the key on and cranked the fan up all the way...ran it in every setting and when i hit "vent" i coughed out alarge "hair ball" (sound deading mat) and ever since then my heater works great....another thing you can try is taking your glove box out and looking ontop of the heater box. there should be a couple of cables going to some linkage....move the heater control from hot to cold and see that they are moving all the way....or look under the hood and make sure that you even have vacuum to the going to the heater controls. thats a pretty common problem
__________________
"Horsepower is how fast you hit the wall, torque is how far you carry the wall with you." '84 chevy half ton short box 2wd, 67,000 actual miles  '03 chevy 1500 HD crew cab 4x4 standard box, 6.0L 
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11-06-2007, 08:21 PM
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#14 |
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Registered User
Join Date: Jun 2007
Location: NW Pennsylvania
Posts: 92
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Re: Need more heat
Got more heat. Removed the core box; no blockages, all flaps work. Re-routed the 3/4" heater core hose from the return on the radiator to the port on the water pump; other end to the large core connection. The other hose stayed on the intake port. I have no idea why this gives me more heat. Better coolant flow through the core?
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11-06-2007, 08:29 PM
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#15 |
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Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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Re: Need more heat
I got better heat now also. I flushed the system and installed a new thermostat. The water temp gauge will actually come up now. My smaller hose (5/8?) is going to the intake and the larger (3/4?) one to the radiator.
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI |
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11-07-2007, 01:30 AM
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#16 |
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glamoros piece o' lowlife
Join Date: Mar 2007
Location: Redford, MI
Posts: 1,164
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Re: Need more heat
well I managed to blow my 10-month-old heater core Friday evening, was on my way to look at some V6 Ranger to buy for a DD and I just had to "race" the chick with a Mustang that happened to be driving next to me, got up to 4k and when I shifted into 2nd I could smell coolant in the cab, sure enough by the time I find a place to pull over there was a lil puddle on the floorboard - bypassed the core, said screw it with the Ranger, headed to feed my friend's cats, stopped by AutoZone and picked up a new core for free (still under warranty), got home and installed it in less than an hour! This time I put back the restrictor washer I removed some time ago, should keep the darn thing from ballooning under high rpms.
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The more I drink, the more I drink, the more I drink... diesel, reg cab, long bed, 4 across the rear, single stack, wooden stakes, and lotsa lights - the Hay Express |
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12-03-2007, 05:50 AM
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#17 |
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Registered User
Join Date: Jun 2007
Location: grand forks, nd
Posts: 154
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Re: Need more heat
i'm having a similar problem myself. with the truck warmed up, i turn the fan above medium otherwise the heater seems to use the heat up after 10-15 seconds and then blows nothing but cold. would changing to a higher thermostat fix this. my water gauge doesn't go over a 1/4 with my heater on.
don't mean to hijack.
__________________
 It's peanut butter jelly time.'74 GMC 3/4 TON 2WD LB |
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12-03-2007, 11:40 AM
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#18 | |
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Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: Need more heat
Quote:
No, the principal is to route heated water from the head to the heater core and then return it to a LOW pressure area for a proper flow through your heater. To improveon this, havce you thought about putting in a new heater core. You may have some restriciton inside it and your could be only using a small part of the core to transfer heat to the cab. How big is your radiator? If it is a heavy duty radiator, then it is probably keeping your engine cooler than what youwant in your area during the winter. What temperature is your T/stat? You can run a hotter T/stat to keep the motor warmer, than what you are now, but be careful ---there is a fine line here, when it gets worm again. An engine flush may be needed to get all of the heat transfer you can get to the coolant. Sludge will hamper the heating of the water and also keep the engine running hotter than it needs to. |
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