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Pressurized coolant overflow/reservoir okay?

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Old 04-14-2020, 08:19 AM
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Car: 1989 Firebird, base model
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Pressurized coolant overflow/reservoir okay?
The coolant tank on my firebird when I bought it was aftermarket and cracked. Instead of just buying another aftermarket I went with one of those slick looking Rev9 aluminum ones. Having seen similar tanks on other cars here on the group I didn't notice/realize it was a sealed tank. Do I need to vent the tank, and what would be an appropriate solution for that?
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Old 04-14-2020, 08:25 AM
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Re: Pressurized coolant overflow/reservoir okay?
Yes it needs a vent. Drill a hole in the cap. The bottle should never be more than about 3/4 full.

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Old 04-14-2020, 09:50 AM
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Re: Pressurized coolant overflow/reservoir okay?
Originally Posted by GeneralDisorder
Yes it needs a vent. Drill a hole in the cap. The bottle should never be more than about 3/4 full.

GD
Awesome, thanks! I assumed it needed to be venting, just didn't want to go drilling without confirmation.
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Old 11-20-2021, 01:24 PM
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Re: Pressurized coolant overflow/reservoir okay?
Originally Posted by Sean White
Awesome, thanks! I assumed it needed to be venting, just didn't want to go drilling without confirmation.
I have one and I didn't vent it, am I doing any damage by not venting it?
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