Vacuum reading

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May 12, 2011 | 06:38 PM

#26

bumblebeerx8

Rear Mount GT35R

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From: toledo,ohio

i run around 18.5-19 and i am turboed. I never checked prior. im 615 above sea level

May 12, 2011 | 10:58 PM

#27

05rx8mazda

B.I.G

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From: AT---EIL

i am currently around 16.5-18.5 and its been that way since new motor.... but then again i am using a cheap prosport guage.

Mar 29, 2012 | 11:23 AM

#28

warren(silver-roxy-8)

no sleep til it spools

Joined: Jan 2009

Posts: 502

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From: Austin, Texas

Quote:

Originally Posted by Charles R. Hill

Factory spec be damned; most healthy Renesis engines will produce about 15-17 in./hg. at idle but equally important is that the vacuum gauge needle is steady and not bouncing around.

Charles, what would cause an unsteady gauge needle under vacuum?

P.S. Apologies about the revival of this thread

. Rather revive than recreate, am I right?

Mar 29, 2012 | 12:06 PM

#29

wcs

no agenda

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From: Ontario

Quote:

Originally Posted by warren(silver-roxy-8)

Charles, what would cause an unsteady gauge needle under vacuum?

P.S. Apologies about the revival of this thread

. Rather revive than recreate, am I right?

I know this is directed at CRH,
But I would like to take a stab at it,

I'm going to go with the something like the vacuum potential for a given chamber or like vacuum differential between chambers.