C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Overheating

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Old Apr 30, 2008 | 01:03 PM
  #1  
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Default Overheating

I started up the car today for the first time after the winter.

I let the car idle for about 10 min.
Then the car started to boil due to air in the coolant system.
I could se water and steam come out from the t-stat housing, and rear of the intake from the gasget area (where the coolant hoses goes for the converted lt1 intake).
And I could also hear it boil in the radiator.

My first thought where that now need to replace the intake gasget.
BUT after I mange to get all the air out, and then re-torqued the intake bolts ( just to be sure ), I cant se any leaks, and the coolant level does not decrease.
Im I just lucky, or should I repalce the gasget anyways?

Thanks
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Old Apr 30, 2008 | 01:05 PM
  #2  
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^^yeah, that shouldn't happen. Something dried up there and became brittle.

Your coolant system is nothing to sneeze at or take lightly. I'd pull that Thermostat as well.
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Old Apr 30, 2008 | 01:20 PM
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Yeah. I changed the t-stat and gasget. I have not chagned the intakegasget yet.
Right now I have test drive the car, and no more overheating. ANd no steam/water is leaking.
But perhaps Its bet to replace that intakegasget anyways
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Old Apr 30, 2008 | 01:59 PM
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Did you "burp" and "pack" your radiator?

My 86' would always look like the radiator was full, but I would get a "Low Coolant" light. I followed the "Burp & Pack" procedure in the C4 tech notes section here and that fixed me right up.
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Old Apr 30, 2008 | 02:05 PM
  #5  
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Originally Posted by Square
Did you "burp" and "pack" your radiator?

My 86' would always look like the radiator was full, but I would get a "Low Coolant" light. I followed the "Burp & Pack" procedure in the C4 tech notes section here and that fixed me right up.
Yes m8. I followed the procedure as posted here. And now the temp is stabel. Im just worried about the intake gasget. But so far it seems to keep tight. I cross my fingers...
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Old Apr 30, 2008 | 03:35 PM
  #6  
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You need to change the oil and filter too, just in case coolant entered the oil.

Jake
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Old Apr 30, 2008 | 04:11 PM
  #7  
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mm. your probaly right. But I cant se any water in the oil.. Well as long as dont need to change the intake gasget im a happy guy

Thanks
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