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 Heater control valve,,,curious, what would you do if it blew?
#1074545
10/01/14 06:17 AM
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Joined: Mar 2003
Posts: 2,324
OP
Body Damage is Cool
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just looking at this thing, thinking about its' age, and wondering what I would do if I was out in back of beyond and it blew out whatever it's made of.
The valve and pipe , which goes thru the firewall to the hose,,,is bad enough,,,but last night I realized that thing also has a major bracket welded (not bolted) that would make this thing very difficult to re-engineer or modify/fix somehow.
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Anybody ever had one break???.
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How did you fix it???
dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.
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 Re: Heater control valve,,,curious, what would you do if it blew?
[Re: KrzyDav]
#1074546
10/01/14 07:19 PM
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Joined: Mar 2005
Posts: 1,006
Body Damage is Cool
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Anybody ever had one break???. No, but they can leak coolant through to heater core so heater always on. I just replace, pretty cheap (mostly plastic) and you can usually cross them over to another make/model as it's a simple on/off valve. I find NAPA good for trying to do that.
92 Montero LS 3.0L V6 Auto, Stock, Original owner, 185,800K miles
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Re: Heater control valve,,,curious, what would you do if it blew?
[Re: pcc]
#1074547
10/02/14 01:45 AM
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Joined: Mar 2003
Posts: 2,324
OP
Body Damage is Cool
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so your saying you can take the guts out of the pipe and replace that with guts from a similar part?
I've never had one apart, but there's a little stainless steel rod that goes into the pipe and it must have a seal of some kind around it. Not worried about my heater not working, just if that probable seal blew and steamed my foot off.
dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.
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Re: Heater control valve,,,curious, what would you do if it blew?
[Re: KrzyDav]
#1074548
10/02/14 03:10 AM
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Joined: Jan 2001
Posts: 13,649
Web Wheeler
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Measure the spread between the two heater connections at the firewall. Solder up two 1/2" copper elbows and three short pieces of 1/2" copper pipe into a squared U to make a bypass. Remove heater feed and return hoses from the connections and clamp to bypass. Top up water and drive home.
Not responsible for advice not taken...
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Re: Heater control valve,,,curious, what would you do if it blew?
[Re: fasteddy]
#1074549
10/02/14 05:10 AM
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Joined: Jun 2002
Posts: 6,211
Trail Leader
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Or use a piece of heater hose (in a pinch) to loop from the coolant "out" from the engine back to the "in."
LordTrunks doesn't need a heater. Why should anyone else? J.K., I'm from the Midwest...I remember...
John B.
'87 Raider 2.6 Turbo Auto, Under Construction
'95 Montero SR, 35x12.5/15 BFG M/T KM-2's, Rock sliders, Qtr panel chop, gas tank lift, 2" BL, Aisins, 5.29s
'95 Pajero Mini
'98 Montero Winter Ed.
'04 Cadillac XLR
'03 Kawasaki ZRX1200R
'60 Ford Falcon 4Dr
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Re: Heater control valve,,,curious, what would you do if it blew?
[Re: KrzyDav]
#1074550
10/02/14 11:29 AM
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Joined: Mar 2005
Posts: 1,006
Body Damage is Cool
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so your saying you can take the guts out of the pipe and replace that with guts from a similar part? No, I'm saying you may be able to replace the entire valve with different application part.
92 Montero LS 3.0L V6 Auto, Stock, Original owner, 185,800K miles
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Re: Heater control valve,,,curious, what would you do if it blew?
[Re: pcc]
#1074551
10/03/14 03:50 AM
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Joined: Mar 2003
Posts: 2,324
OP
Body Damage is Cool
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Right now I've got a hose in aloop on back of engine,,cause I haven't commitedyet to buyin oEM hoses.
My long term concern is fixing it/ preventative maintenance on something really old.
This thing is pretty unique and getting something similar and cutting and soldering my be the way to go.
The other possability is to grind/de- solder the joint to the bracket,,pull valve guts out , solder a cap on pipe , weld/ solder it back to bracket.
Then put a valv in the hosethat yo operat 2 time / year.
dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.
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Re: Heater control valve,,,curious, what would you do if it blew?
[Re: KrzyDav]
#1074552
10/03/14 05:00 AM
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Joined: Jan 2001
Posts: 13,649
Web Wheeler
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That would work. The fact that 1/2" copper is a close match will make finding a vavle easier. In fact, you may find a quarter turn valve that would allow using the oem lever to turn it, and make the valve change transparent.
Not responsible for advice not taken...
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Re: Heater control valve,,,curious, what would you do if it blew?
[Re: fasteddy]
#1074553
10/13/14 10:37 PM
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Joined: Mar 2003
Posts: 2,324
OP
Body Damage is Cool
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good idea, Eddy, I'm thinking now that a small plumbing type ball valve could be fitted due to the really long pipe the present valve has before it goes thru firewall. I don't care if the cable works it, but inside like you discribe would be no problem to reach under dash and flip.
What type valve that is clear are you talking about?
dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.
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Re: Heater control valve,,,curious, what would you do if it blew?
[Re: KrzyDav]
#1074554
10/14/14 03:53 PM
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Joined: Mar 2005
Posts: 1,006
Body Damage is Cool
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What type valve that is clear are you talking about? I use one similar to this to shut off to block flow in summer mounted on firewall connection: http://www.amazon.com/Four-Seasons-84707-Shut-Off-Valve/dp/B000DCNGLK#productDetailsThe one review that says it leaks through the thread is not very accurate. When the valve is fully off or on it does not leak. Only weeps a little fluid when opening/closing.
92 Montero LS 3.0L V6 Auto, Stock, Original owner, 185,800K miles
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