2003 Plastic Tstat housing
#1
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I assume the pic I show below is the plastic Tstat housing? Look close at the line that goes into the top of it. It has some type of yellowish sealant there. That plastic housing is the Tstat housing? It appears rather simple to get off.
Also not pictured, the top rad hose when hour the last 4 or 5 inches before it clamps down looks a little BLOATED when hot. When that hose if cool it is collapsed a little. Should that hose be replaced?
Also not pictured, the top rad hose when hour the last 4 or 5 inches before it clamps down looks a little BLOATED when hot. When that hose if cool it is collapsed a little. Should that hose be replaced?
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Jandreu (07-12-2014)
#3
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The 4" hose is designed to look blotted so that the Jaguar tech can sell you a replacement. I had a tech suggest replacement after it had been replaced 4k miles ago at the same dealership.
The plastic housing is, indeed an easy replacement if you have an 8mm crows foot wrench (spanner). Since that is as scarce as the proverbial hen's tooth others, including myself have resorted to the 'bent wrench' and 'ground socket' solution. A quick search should pull up such terms.
There is an aluminum replacement for the plastic housing. Because the bright aluminum looks out of place on a black engine I would suggest that you paint it black before installing.
The plastic housing is, indeed an easy replacement if you have an 8mm crows foot wrench (spanner). Since that is as scarce as the proverbial hen's tooth others, including myself have resorted to the 'bent wrench' and 'ground socket' solution. A quick search should pull up such terms.
There is an aluminum replacement for the plastic housing. Because the bright aluminum looks out of place on a black engine I would suggest that you paint it black before installing.
Last edited by test point; 07-12-2014 at 08:25 PM.
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#9
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My understanding when I was shopping for a new housing last year was the aluminum one was for 4.0 and there was not one available for the 4.2. I bought the entire housing, it comes with thermostat and all appropriate gaskets, I did have to buy hose clamps. Can't remember where I got mine from, ebay perhaps. Check out SNG Barrett online, as a forum member you'll receive 10% off-remember to tell them!
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SNG Barratt USA (07-15-2014)
#13
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Everyone is trying to direct you to a 4.0 housing. Look at this one:
03 2003 Jaguar XK8 Thermostat Housing - Cooling System - Genuine - PartsGeek
The water pump was only a problem on the very early 4.0, and I expect they were all replaced long ago. That said, many plastic vane pumps may suffer damage if the engine is drastically overheated, but the head gasket would probably be blown then and the heads warped and valve seats dropped.
03 2003 Jaguar XK8 Thermostat Housing - Cooling System - Genuine - PartsGeek
The water pump was only a problem on the very early 4.0, and I expect they were all replaced long ago. That said, many plastic vane pumps may suffer damage if the engine is drastically overheated, but the head gasket would probably be blown then and the heads warped and valve seats dropped.
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