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Old 09-24-2011, 08:51 PM
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tin-man tin-man is offline
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Join Date: Jan 2010
Location: Sun City West,, AZ
Cobra Make, Engine: SPF2984 MK111, Roush 511 IR FE 8 Stack, Dynoed: [flywheel] 572HP at 6000 , 556# Torque at 4700, Bowler 4R70W Auto Transmision. Tires: Mickey T's S/R 26.0x10.0x15.0 F ,26.0x12.0x15.0 R Color, Bleck, because they told me it was Bleck, at the factory.
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Quote:
Originally Posted by Barnsnake View Post
The power steering pump is hydraulic and the power brake booster pump is probably an air pump. They likely have little in common.

I have no experience with a brake booster pump, but i've never seen a quiet vacuum pump. It is possible mounting the pump with better (softer) isolation could help with resonating vibration, but if it is intake noise in the pump itself, it might not.
Thanks, I was advised by the installer he could hook up the power breaks to the power steering pump, but likely would lose some efficiency, thus my comments on the sameness on the Cobish post. However in either case, hydraulic or air pump I am hearing some noise is the norm. tin-man
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