|
|
|
|
| Author |
|
|
Registered
Join Date: Apr 2008
Location: TX
Posts: 95
|
Decel Valve on an 81?
Did the 81 930s had the decel valve or vaccum limiter?
|
||
02-28-2012, 07:49 AM
|
|
|
Crotchety Old Bastard
|
As far as I know all 930s had a decel valve.
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
||
|
02-28-2012, 09:20 AM
|
|
|
Registered
Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
|
CIS or k-jetronic mechanical injection was designed to meet epa emissions and I think all cars equipped with it had an intake manifold vacuum limiter valve. A big saucer shaped one or adjustable small one.
They lowered exhaust emissions during deceleration and are sometimes called an anti-backfire valve on other cars. You can accomplish the same thing they do by not lifting or closing throttle all the way when decelerating but thats kinda weird and no fun at all. |
||
|
02-28-2012, 09:38 AM
|
|
|
Registered
Join Date: Apr 2008
Location: TX
Posts: 95
|
Is there a close up picture of where it is located and how it is installed as my car seems to be missing this and I would like to refit it.
|
||
|
02-28-2012, 10:05 AM
|
|
|
Crotchety Old Bastard
|
The decel valve is labeled "A" in this photo:
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
||
|
02-28-2012, 06:21 PM
|
|
78 Porsche 911SC 3.0L, 3.3Turbo soon. 
