Thermostat Housing Leak...Help!
#21
#24
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I have a similar problem on my wifes 2000 xj8, its leaking at the top where the screw on cap is. I have replaced the cap 2x, still a slight leak. I suspect its some fault with the housing, and likely either cracked and or just worn out.
So I am thinking about replacing the whole unit with one of the metal ones, see ebay, for around $90 complete, including the 2 gaskets, housing, thermostat housing and top cap Does anyone know what the torque specs are on this, especially when one bolts such to the engine.
What about using a gasket selaer, is this also necessary?
Thanks
So I am thinking about replacing the whole unit with one of the metal ones, see ebay, for around $90 complete, including the 2 gaskets, housing, thermostat housing and top cap Does anyone know what the torque specs are on this, especially when one bolts such to the engine.
What about using a gasket selaer, is this also necessary?
Thanks
#25
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Yes - my 2001 XK8 also had antifreeze inside the hex drive on the cap. Apparently, there was a hairline crack in the housing, and I guess some antifreeze sprayed out and filled the hex. I bought the aftermarket aluminum kit, and that took care of the problem. You will still need an 8mm crowsfoot, if you don't want to remove the intake manifold, assuming your 4.0L engine is like mine. Here is the ordering info for Snap-On:
P/N : TMCOM8
Desc : Wrench, Metric, Crowfoot, Open End, 8 mm
http://buy1.snapon.com/catalog/item....e&tool=all
Torque is 8-10 Newton Meters (Nm) = 71 - 88 inch pounds for the bolts with the 8mm hex head. No gasket sealer is required. The kit comes with the o-ring type seal.
You can get the aluminum kit from Welsh Enterprises for $69.95
https://www.welshent.com/ViewProduct...egory_ID=13116
Part Number:
AJ8-2217-KIT
Hope this helps.
P/N : TMCOM8
Desc : Wrench, Metric, Crowfoot, Open End, 8 mm
http://buy1.snapon.com/catalog/item....e&tool=all
Torque is 8-10 Newton Meters (Nm) = 71 - 88 inch pounds for the bolts with the 8mm hex head. No gasket sealer is required. The kit comes with the o-ring type seal.
You can get the aluminum kit from Welsh Enterprises for $69.95
https://www.welshent.com/ViewProduct...egory_ID=13116
Part Number:
AJ8-2217-KIT
Hope this helps.
#27
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I think I did the job in 4 or 5 hours, taking my time. Of course, I had to get new antifreeze, so I didn't have to reuse the old that I drained out. I did not replace the thermostat, since it was working properly. It's pretty easy to get to.
The drain on the radiator was hard to locate, but I finally found it on the RH (passenger) side. Again, I have a n XK8, and it may be different on yours.
The drain on the radiator was hard to locate, but I finally found it on the RH (passenger) side. Again, I have a n XK8, and it may be different on yours.
#28
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It sounds like the thermostat gasket needs replacing and I would alter the thermostat at the aforementioned time. It shoud be appealing simple to do but apparently no to big-ticket to accept done either as continued as you don't accept to yield it to the dealer. As for the blooming coolant it's ok as continued as you don't mix it with the orange stuff.
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Thermostat
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Thermostat
#29
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It sounds like the thermostat gasket needs replacing and I would alter the thermostat at the aforementioned time. It shoud be appealing simple to do but apparently no to big-ticket to accept done either as continued as you don't accept to yield it to the dealer. As for the blooming coolant it's ok as continued as you don't mix it with the orange stuff.
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Thermostat
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Thermostat
#30
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RJag (09-30-2013)
#33
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Been reading the thread. I discovered I had a bad thermostat, ordered a new one from Coventry West and began to take the housing off. Wow, surprised to realize this and the water pump housing was plastic! Also when loosening one bolt the entire insert came out. Couldn't believe this cheap crap on a Jag. Decided I'm not dealing with this possibility again so ordered from CW their aftermarket aluminum water pump housing and thermostat housing. I have a Jag tech in my city and one not too far away to try and beat dealer cost. Just felt going aftermarket items best way to go and drop the plastic.
Bill
Bill
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#34
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Looks like my t-stat leak is going to require a new tower. I note there is a plastic version and an aluminum one at motorcarsltd.com. IS the aly one the best option based on all your experiences? Also is there a post somewhere that goes step by step on replacing the thermostat housing and what parts to order?
Many thanks, I just don't want to mess up anything!
Many thanks, I just don't want to mess up anything!
#35
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cjd777 (06-09-2014)
#37
#38
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kvmentor (03-08-2011)
#39
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Gus - Thanks, I went back to the Snap On Tools website. Although the search function doesn't find the 8 mm, when I searched for "crows foot wrenches" and scrolled down I found the wrench. So on its way for $16.
By the way, you drained the coolant via the plug at the bottom of the radiator right side, correct?
By the way, you drained the coolant via the plug at the bottom of the radiator right side, correct?
#40