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Help with C5 thermostat swap.

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Old Jul 24, 2013 | 06:19 PM
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Default Help with C5 thermostat swap.

Anyone have a good guide I can follow. I have a 02 Z06 and I'm swapping thermostats and replacing the coolant. Thank you in advance!
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Old Jul 24, 2013 | 06:33 PM
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It's pretty easy to do ... Some good advice get a new housing before doing the job ....

Get your car up on stands .
The stat is on the right of the car .... The only bad thing is that it's way down there and is easier to do from the bottom side of the car ... Remove the 2 bolts and reinstall ...about 4 hours to complete
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Old Jul 24, 2013 | 06:42 PM
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Thank you for the quick response. The thermostat is right in my face when I'm on the side of the car. Are you sure it takes that long to do it. I would assume just drain all the coolant, undo the two screws and swap thermostats. Then I would refill the coolant.

Am I way off?
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Old Jul 24, 2013 | 06:51 PM
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Originally Posted by John24
Thank you for the quick response. The thermostat is right in my face when I'm on the side of the car. Are you sure it takes that long to do it. I would assume just drain all the coolant, undo the two screws and swap thermostats. Then I would refill the coolant.

Am I way off?
I had 2 English bulldogs up in my face the whole time ..
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Old Jul 24, 2013 | 06:58 PM
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Don't have to jack up the car. Just drain the coolant, undo the 2 bolts and change it. Refill with coolant. Takes maybe 10 minutes
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Old Jul 24, 2013 | 07:04 PM
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Originally Posted by 02z06dave
Don't have to jack up the car. Just drain the coolant, undo the 2 bolts and change it. Refill with coolant. Takes maybe 10 minutes


The longest part is waiting for the coolant to drain... Crack open a beer and surf Corvette Forum while you wait!

You can reach the coolant drain twist plug without jacking up the car or driving up on ramps, but it's a tight fit. You can do it if you reach up behind the passenger front wheel. Make sure your catch pan is ready because it begins to drain the moment you turn the plug.

I installed my low temp stat after I had my A4 tuned by Chuck of C.O.W. Since I had just had my coolant swapped out less than 100 miles earlier, I re-used by coolant. I just poored it back in thirds and burped the hoses to make sure the air was out.

Good luck!
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Old Jul 24, 2013 | 07:04 PM
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Where is the best place to drain the coolant from? You guys are awesome.
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Old Jul 24, 2013 | 07:06 PM
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Originally Posted by MSG C5


The longest part is waiting for the coolant to drain... Crack open a beer and surf Corvette Forum while you wait!

You can reach the coolant drain twist plug without jacking up the car or driving up on ramps, but it's a tight fit. You can do it if you reach up behind the passenger front wheel. Make sure your catch pan is ready because it begins to drain the moment you turn the plug.

I installed my low temp stat after I had my A4 tuned by Chuck of C.O.W. Since I had just had my coolant swapped out less than 100 miles earlier, I re-used by coolant. I just poored it back in thirds and burped the hoses to make sure the air was out.

Good luck!
Awesome! Should I refill 2 gallons, start it up a few times, then put another half?
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Old Jul 24, 2013 | 07:11 PM
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Originally Posted by John24
Where is the best place to drain the coolant from? You guys are awesome.
Below is a link that is a good reference point. You drain the coolant through the lower drain valve on the bottom of the radiator, behind the passenger tire/wheel as mentioned. The valve is actually called "the drain ****" and it is plastic so be careful in turning it and not breaking it.

http://www.iammoon.com/c5tech/coolant_drain.htm

Originally Posted by John24
Awesome! Should I refill 2 gallons, start it up a few times, then put another half?
You can do it that way. I did it in thirds just to make sure the coolant was moving through the system and that I was getting rid of any air. You should make sure you note the level of fluid in your overflow tank before hand and make sure you are at the same level when you're done with the swap.
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Old Jul 24, 2013 | 07:16 PM
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Originally Posted by James2002z06
It's pretty easy to do ... Some good advice get a new housing before doing the job ....

Get your car up on stands .
The stat is on the right of the car .... The only bad thing is that it's way down there and is easier to do from the bottom side of the car ... Remove the 2 bolts and reinstall ...about 4 hours to complete
4 hours, No wonder that Casino isn't done yet..lol
I did mine in maybe 20 mins.
lol
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Old Jul 24, 2013 | 07:39 PM
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Wasn't there recently a post about how to do the change with the new housing and not even loosing much fluid? I can't remember who posted it though. I thought maybe it was on Marks site but I looked and don't see it.

Anyone else remember the post/discussion?
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Old Jul 24, 2013 | 07:42 PM
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Was one of Bills posts from a while ago; (and I had it bookmarked once I thought to look there.... DUH)

http://forums.corvetteforum.com/1547860417-post7.html
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Old Jul 24, 2013 | 07:51 PM
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Default That's right ....

Originally Posted by Mr.Bill
4 hours, No wonder that Casino isn't done yet..lol
I did mine in maybe 20 mins.
lol
I did it from the bottom ... I cannot bend over the car ..... If some of you'll can do it in 10 mins ... Hats off to you'll. ....
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Old Jul 24, 2013 | 07:52 PM
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just need to take off 2 bolts and T stat is off.
should take like 20~50min
If you never changed your water pump, I would suggest doing that also since its about 10years old,

Also, do a good system burping once you install your t-stat
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Old Jul 24, 2013 | 07:54 PM
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How long do you'll last in the bed ... 10 mins .... Now that's funny
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Old Jul 24, 2013 | 08:02 PM
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What is system burping? I also am sure the water pump is not the stock one.
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Old Jul 24, 2013 | 08:05 PM
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Like I said it takes more than 10 to 20 mins
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Old Jul 24, 2013 | 08:16 PM
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The way to do it without losing much antifreeze is to remove the thermostat housing that has the thermostat built in when it is cold and closed with the hose still attached, Hold the hose up high and install the new thermo and housing on the hose and then install the housing to the motor.
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Old Jul 24, 2013 | 08:41 PM
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You guys should really check out the link I posted from ET - extremely good write up on how to do it.
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Old Jul 24, 2013 | 08:50 PM
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Originally Posted by James2002z06
How long do you'll last in the bed ... 10 mins .... Now that's funny
Any longer is wasted energy, imo
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