Quote:
Originally Posted by Ant
Would a 3 stage Peterson pump with two std scavenge sections pull enough vacuum for me to consider a relief valve, any thoughts!
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I ran a 3-stage SCP pump on the Cobra for a while. We didn't try to pull vacuum... ran it vented. A good quality 4-stage is the minimum we would use to run it sealed.
We'd see 10-12" with a 4-stage Barnes on the Late Model engines. That's why we didn't run regulators, only pop-offs. We'd see a little more than that with 5-stage and gerotor-style pumps.
Scott