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

Throttle body

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Old Jun 5, 2019 | 04:06 PM
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Default Throttle body

How much coolant do i have to remove to take off the throttle body and avoid a mess.
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Old Jun 5, 2019 | 04:18 PM
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It's the highest point in the cooling system, so you should only lose a little bit of coolant before the TB is empty.
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Old Jun 5, 2019 | 04:29 PM
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It won't leak much. Just toss a towel under it, and be ready to point the hoses upwards quickly to minimize what flows out. A few ounces poured out when I pulled my TB to clean it.
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Old Jun 5, 2019 | 11:50 PM
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Originally Posted by fredk
How much coolant do i have to remove to take off the throttle body and avoid a mess.
I removed mine just today to clean and check IAS valve. I lost not a drop, even though I had placed rags all underneath suspected hose points where they might drip water when removed.
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Old Jun 6, 2019 | 09:38 AM
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Thanks guys, I was hoping to hear that.
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Old Jun 6, 2019 | 10:21 AM
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Obviously remove the hoses when the motor is cold.
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Old Jun 6, 2019 | 01:14 PM
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Those of us that did the "Throttle Body Coolant Bypass" mod don't have to worry about any dripping mess.
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Old Jun 6, 2019 | 05:13 PM
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But look where he lives.
Course it is probably a summer car by now anyway
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Old Jun 6, 2019 | 08:46 PM
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Precisely, one shouldn't do the bypass mod if they encounter frequent 32 degree and lower weather in Winter.
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Old Jun 7, 2019 | 09:32 AM
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Baloney. I've lived in sub 32* climates all my life and never had an issue w/o having a TB heater in place. Is icing possible? Yeah. Likely? No.
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Old Jun 7, 2019 | 09:34 AM
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No way would I drive this car in the winter. I have been thinking of doing the bypass when I have the throttle body off as it's only a fun car.
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Old Jun 7, 2019 | 10:38 AM
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Does it make that much of a difference?
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Old Jun 7, 2019 | 12:18 PM
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It makes a huge diff!

Just kidding. Probably so small it's not measurable. But...it costs nothing and makes future maintenance a little easier.
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Old Jun 8, 2019 | 09:59 AM
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Just doing it for future maintenance, just to let you know our temperature is 85 degrees. lol
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