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RaggedEdge 07-05-2019 07:59 AM

Ryan00TJ, Thanks for the post.

26ZX Donzi 07-05-2019 09:22 AM

So even if the motor is empty you replace all the fluid through the coolant tank? No worries about air in the system doing it that way?

Sydwayz 07-05-2019 10:53 AM

The coolant overflow tank is the highest part of the cooling system. IF there is an air pocket, it will work it’s way up to there pretty quick at higher RPMs.

The only other way to fill would be to pull a vacuum like some cars require, and that would be a bad idea for the heat exchanger.

26ZX Donzi 07-05-2019 10:58 AM

Thank You All!!

muc 07-06-2019 11:20 AM


Originally Posted by Sydwayz (Post 4695197)
The only other way to fill would be to pull a vacuum like some cars require, and that would be a bad idea for the heat exchanger.

The vacuum method is how I refill most closed cooling engines. I've always wondered if there is any damage to the cooling hoses, because some of them really suck down flat. But I had never worried about the heat exchanger. Why is pulling a vacuum bad for them?

Sydwayz 07-06-2019 11:31 AM


Originally Posted by muc (Post 4695354)
The vacuum method is how I refill most closed cooling engines. I've always wondered if there is any damage to the cooling hoses, because some of them really suck down flat. But I had never worried about the heat exchanger. Why is pulling a vacuum bad for them?

Because they have thin copper tubes, and I'd be concerned about damaging them.


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