 engine cooling question |
 Jun 15, 2012 - 6:05 PM
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 Enthusiast  Joined May 13, '06 From Kaimuki, HI Currently Offline Reputation: 10 (100%)  |
on the heater system, which side is the send and which side is the return? What I mean is which side is the engine pumping into the heater core and which side is the return back into the engine? All hoses are disconnected and I have a different engine in the car now so I can't look at where the hose is going. I would guess that the heater control valve would shut off the water pumping in from the engine and the return would be on the other side. Neither the Chiltons nor the Haynes manuals have a cooling flow diagram. Thanks!
-------------------- -Jay
95 GT conv. project car: Manual, Gen III 3sgte, JN pisons, Eagle rods, overbore, crank knife-edged, crank scraper, ARP head/main/flywheel, Autronic EMS, Haltech Dual Wideband O2 controller, Audi 1.8T individual coils, FMIC and SSQV BOV, 3" downpipe, 3" ultra-high-flow cat, 2.5" Borla muffler, +other 01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished 02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve |
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Jun 15, 2012 - 9:14 PM
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Enthusiast Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) |
It does matter, system is designed to push the coolant in a certain direction and pull it back the other way. Reversing that flow can make it that much harder to get air out, cause poor heater performance due to low flow, or even (if one side has a restriction) erode the heater core and cause a leak.
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Jun 15, 2012 - 10:57 PM
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Enthusiast Joined Dec 30, '11 From Atlanta via Mobile Currently Offline Reputation: 0 (0%) |
QUOTE (Bitter @ Jun 15, 2012 - 10:14 PM)  It does matter, system is designed to push the coolant in a certain direction and pull it back the other way. Reversing that flow can make it that much harder to get air out, cause poor heater performance due to low flow, or even (if one side has a restriction) erode the heater core and cause a leak. We're not talking about spinning the water pump backwards... The only difference is the core in/out. AND if you do have a restriction, that should be addressed. Anyway, the answer was given. Good luck getting the car back together. -------------------- QUOTE (Araykhel @ Oct 10, 2011 - 6:32 PM) Today I learned that I need a turbo to complete me. |
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Jun 16, 2012 - 9:31 AM
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Enthusiast Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) |
QUOTE (RobbMeeX @ Jun 15, 2012 - 10:57 PM) QUOTE (Bitter @ Jun 15, 2012 - 10:14 PM) It does matter, system is designed to push the coolant in a certain direction and pull it back the other way. Reversing that flow can make it that much harder to get air out, cause poor heater performance due to low flow, or even (if one side has a restriction) erode the heater core and cause a leak. We're not talking about spinning the water pump backwards... The only difference is the core in/out. AND if you do have a restriction, that should be addressed. Anyway, the answer was given. Good luck getting the car back together. Some vehicles have a restritor built into the line to limit flow, the heater control valve may perform that function on the Celica. It's not an uncommon thing. Coolant flowing too fast through a heater core can and does cause problems, countless OEM's release updated hoses WITH restrictors in them to prevent and fix that issue. It's made to flow one way with hoses cut to go to one side and the other, connect it correctly and there's not a potential problem. One less thing to worry about. -------------------- |
Posts in this topic
match220 engine cooling question Jun 15, 2012 - 6:05 PM
xrav22 QUOTE (match220 @ Jun 15, 2012 - 7:0... Jun 15, 2012 - 8:05 PM
match220 QUOTE (xrav22 @ Jun 15, 2012 - 3:05 ... Jun 16, 2012 - 12:37 AM xrav22 QUOTE (match220 @ Jun 16, 2012 - 12... Jun 16, 2012 - 2:16 AM RobbMeeX QUOTE (match220 @ Jun 15, 2012 - 6:0... Jun 15, 2012 - 8:39 PM azian_advanced the hose leading to the heater control valve from ... Jun 15, 2012 - 8:54 PM Bitter QUOTE (RobbMeeX @ Jun 15, 2012 - 10... Jun 16, 2012 - 9:31 AM |
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