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Unread 03-23-2009, 11:26 AM   #1
NY1995ZJ
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Size - Lower Theromostat Housing Bolt - 93 XJ

Was replacing a friend's thermostat/housing yesterday since it was leaking, only to find out that they were missing a lower bolt!! That explains the leak! haha. Does anyone have a size so I can buy a grade 8 from home depot and get this thing done? Dealers don't have any in stock.

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Unread 03-23-2009, 11:28 AM   #2
jeeptown
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Take the other one up there and match it up.
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Unread 03-23-2009, 11:35 AM   #3
NY1995ZJ
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Problem is, I know the bolts are different lengths. I'm sure I won't be out too mcuh $$ if I buy 3-4 different lengths just to make sure I get the right one...

Would be better if I could get a length from someone here....!

Thanks
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Unread 03-25-2009, 07:28 PM   #4
NY1995ZJ
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Wonderful... now I can see why there wasn't a bolt in there.....

There must be a burr or thread problems inside the block itself. Snapped the new bolt off in the block putting it in.. and it couldn't have been with any more than 15lb ft.....

So I'm guessing the only option is to take off the grill, radiator, and fans and drill it out and retap?
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Unread 03-25-2009, 09:14 PM   #5
Rollin
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Quote:
Originally Posted by NY1995ZJ View Post
Wonderful... now I can see why there wasn't a bolt in there.....

There must be a burr or thread problems inside the block itself. Snapped the new bolt off in the block putting it in.. and it couldn't have been with any more than 15lb ft.....

So I'm guessing the only option is to take off the grill, radiator, and fans and drill it out and retap?
That would be the correct way to do it. You could get away with getting a tap for the bolt. Make sure its the right thread pitch and as long as you can get the tap started, you shouldnt have an issue or any need to drill the hole out. Always be careful when putting the Tstat housing on as it likes to break when put under pressure by the bolts (I broke two until I looked up the torque specs and used rtv to make a good seal). Use a little bit of rtv on the gasket when you put it on so that it gets a good seal without having to tighten the bolts down real tight. I think the torque spec on these bolts is 15ft lbs.
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