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jwakil's Avatar
 
Join Date: Feb 2010
Location: Fort Collins, CO
Posts: 818
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Which one of these is the deceleration valve?

Both in Bentley and other postings I have seen these two things referred to as the deceleration valve:
Is it this one:


or this one ? :



What's the difference between the two?

Old 08-23-2010, 11:19 AM
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McLovin's Avatar
 
Join Date: Jun 2009
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the one in the first pic is the decel valve.
Old 08-23-2010, 11:24 AM
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Join Date: Jul 2005
Location: Bloomfield NJ now Fernandina Beach FL
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both are decel valves

Pic 1 is early style 78(or earlier?)-80
Pic 2 is late style 81-83

Later cars have two saucers that look like that, the other one without nipple is Auxilary Air Valve for hot start
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1983 911SC
Old 08-23-2010, 11:51 AM
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Join Date: Mar 2002
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Deceleration valve.......

The second pic shows the decel valve for late SC's. Earlier SC's ('78-'79) don't have this type of decel valve.

Tony

Old 08-23-2010, 11:53 AM
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