Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 924/944/968 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Banned
 
Join Date: Apr 2004
Location: Portugal
Posts: 1,513
Send a message via AIM to prebordao Send a message via Yahoo to prebordao Send a message via Skype™ to prebordao
Right control pressures for CIS ?

I have a WUR with bosch part number 0438 140 011, which I believe was used in older 924's.
Can anyone advise on the correct cold / warm control pressures for cars with this part (or for early 924's for the matter) ??

Old 01-02-2010, 05:49 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered
 
ideola's Avatar
 
Join Date: Nov 2005
Location: Woodstock IL
Posts: 1,705
Garage
From the Haynes:

All models with CIS (K-Jetronic) Infection (1976-79)
System pressure
Test value 4.5 to 5.2 bars
Adjusting value 4.7 to 4.9 bars
'Warm' control pressure 3.6 ± 0.2 bars (control pressure regulator fully actuated)
'Cold' control pressure 1.5 ± 0.2 bars at room temperature of 20°C (68°F)
Injection valve opening pressure 2.5 to 3.6 bars
CO setting
1976-78. except California 1.5 ± 0.5%
1976-78. California only maximum 0.7% measured ahead of the catalytic converter
1979. except California 0.5 to 1.0%
1979. California only 0.6 to 1.2% measured before catalytic converter with air pump and/or carbon canister disconnected and hoses plugged

All models with Lambda injection (1980 and Turbo)
System pressure (test value) 5.4 to 6.0 bar
CO setting (at idle) 0.5to 1% by volume
'Warm' control pressure 3.65 ± 0.20 bars with engine stopped (no vacuum)
'Cold' control pressure 2.2 ± 0.20 bars at room temperature of 20°C (68°F)
Injection valve opening pressure 2.7 to 3.8 bars
Idling speed 900 ± 50 rpm
Charge pressure controlled (full throttle enrichment) 2.9 ± 0.20 bars
Leak test Minimum pressure after 60 min 1.0 bar

Revisions for 1981-onward
Leak test
Minimum pressure after 10 minutes 2.0 bar
Minimum pressure after 20 minutes 1.7 bar
Fuel pump delivery rate 750 cc per 30 seconds
'Warm' control pressure 3.4 to 5.2 bar
'Cold' control pressure 2.2 ± 0.20 bar at 68°F (20°C)
Injection vaive opening pressure 2.5 to 3.6 bar
System pressure (test value) 4.5 to 5.2 bar

__________________
15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini
Old 01-03-2010, 03:41 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Reply


 


All times are GMT -8. The time now is 10:41 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.