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Old 10-29-2017, 10:02 PM
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GTO JONES GTO JONES is offline
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Default EVAC SYSTEM

Aeroteck evac system instructions state you should have 10 to 12 inches of vacuum at your max RPM. Wondering how much oil should it suck after 60 to 80 miles. Opinions suggestions.

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Old 10-31-2017, 08:23 PM
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Does anyone have an input on the evac system ?

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Old 10-31-2017, 09:01 PM
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You won't care for my input.

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Old 10-31-2017, 09:03 PM
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You might want to try the race section. What kind of system is it? Aeroteck must be spelled wrong. Nothing comes up on Google.

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Old 10-31-2017, 09:21 PM
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OK Aerotech evac system

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Old 10-31-2017, 10:09 PM
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Don't know about Aerotech, but my vacuum pump (electric on a hobbs switch for boost activation) I went 1200 miles and had a few drops in there.

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Old 10-31-2017, 11:22 PM
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I use the GZ unit that makes 12 in-hg. I get about a teaspoonful after 100 miles.
I do use an GZ oil separator in the breather cap that just lets enough oil through to keep the pump lubed.

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Old 11-01-2017, 12:31 AM
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At what rpm do you get 12".

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Old 11-01-2017, 12:33 AM
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Quote:
Originally Posted by surfsama View Post
I use the GZ unit that makes 12 in-hg. I get about a teaspoonful after 100 miles.
I do use an GZ oil separator in the breather cap that just lets enough oil through to keep the pump lubed.
I have a Star Machine Sportsman it pulls about the same amout of vacuum and oil. I have restricted pushrods and just basic Mr.Gasket breathers.

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Old 11-01-2017, 02:15 AM
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Quote:
Originally Posted by GTO JONES View Post
At what rpm do you get 12".
It gets to 12 in-hg @5800 rpm. I use a 4.5 inch pulley on the pump and a 3.5 inch on the crank.

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