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Old 04-28-2005, 04:00 PM
5thElement 5thElement is offline
Join Date: Jul 06, 2004
Location: south louisiana
Posts: 34

How do you correctly install a thermostat? How do I know it isn't backwards, upside down, etc.

Sorry about the stupid question, but I want to make sure I install everything carefully and correctly.

I am almost ready to fire the motor over and to get this FSJ on the road again. Just finishing up some of the little things, like the thermostat for instance.
1982 Jeep Wagoneer AMC 360<br />with bigger plans to be continued...
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Old 04-28-2005, 05:10 PM
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Chrome Chrome is offline
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Join Date: Aug 30, 2002
Location: Tupelo, Mississippi
Posts: 8,526

Also, make sure that you don't go overboard with gasket sealant or it can get into the thermostat and create a restriction that can lead to overheating.

1983 Cherokee Chief Laredo W/T 360/auto

1982 Cherokee Chief W/T 360/4 speed

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Old 04-28-2005, 05:38 PM
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tgreese tgreese is offline
Join Date: May 29, 2003
Location: Medford MA USA
Posts: 11,254

The most common mistake is to not seat the thermostat correctly. If not, when you tighten you can break the housing.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
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Old 04-29-2005, 01:06 AM
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talntar talntar is offline
Join Date: Jun 12, 2002
Location: ansonia ct. 06401
Posts: 5,530

Originally posted by The Anti-riced:
Install it with the spring to the bottom, then the gasket, then the housing. Make sure it fits in the recess or it will leak and you could crack the housing.
well that depends on the brand,there is at least one that goes the other way around
85 gw 215k and still going
castrated(de-wooded)360 2" espo springs 31x10.5
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Old 04-29-2005, 02:36 AM
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J4GRAND J4GRAND is offline
J4000 Restoration Specialist
Join Date: Apr 09, 2000
Location: Valparaiso, IN, USA
Posts: 5,931

Make sure you tighten the housing evenly. I made the mistake one time of over-tightening one side first and snapped the mounting ear off the housing. Also, go easy on any gasket sealant. I use just enough to keep the gasket from moving around.
Patrick V.
73 J4000 "The $LUT" 360 V8 bored .040 over Edelbrock 2131 1407 4V carb K8600 cam Dual Flowmaster 40 mufflers TH400 QT 3.73 Dana 44s
78 Cherokee Chief WT "Old Blue" 360 V8 4V TH400 QT
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