Vacuum Line Diagram and routing - CamaroZ28.Com Message Board


Go Back   CamaroZ28.Com Message Board > 1967-2002 F-Body Technical Discussion > General 1967-2002 F-Body Tech
Sign in using an external account
Register Forgot Password?

Reply Post New Thread
 
 
LinkBack Thread Tools Search this Thread
Old 07-10-2014, 03:50 PM   #1
Registered User
 
Join Date: Jul 2014
Posts: 6
Vacuum Line Diagram and routing

Wassup Camaro fans. Does anybody know where I can the correct vacuum lines diagram and routing for a 93 Z28 Camaro LT1? In the midst of restoring my car and have broken vacuum lines but don't know where they go. NEED HELP! 😩🙏
BlackZ28_93 is offline   Reply With Quote
Old 07-10-2014, 07:15 PM   #2
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 42,749
Re: Vacuum Line Diagram and routing

Is the vacuum diagram still on the radiator cover? That will be specific to your 93, which has a few differences compared to 94 and up.

You can try shbox.com, but his photos are of a 95. If all else fails, I can give you a link to a free download of the 93 factory manual.
__________________
Fred

94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400 + GearVendors OD / Strange 12-bolt - 4.11's / 300-shot N2O / Spohn suspension / 6-pt roll bar with integrated SFC's / AutoMeter instrumentation / MoTeC M48Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.
Injuneer is offline   Reply With Quote
Old 07-11-2014, 07:18 AM   #3
Registered User
 
Join Date: Jul 2014
Posts: 6
Re: Vacuum Line Diagram and routing

Quote:
Originally Posted by Injuneer View Post
Is the vacuum diagram still on the radiator cover? That will be specific to your 93, which has a few differences compared to 94 and up.

You can try shbox.com, but his photos are of a 95. If all else fails, I can give you a link to a free download of the 93 factory manual.
Response: Can you please send me that link!? I think that would do me more justice because I didn't see the diagram on radiator cover
BlackZ28_93 is offline   Reply With Quote
Old 07-11-2014, 11:10 PM   #4
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 42,749
Re: Vacuum Line Diagram and routing

LINK: 4TH GEN SERVICE MANUALS; 82-02 PARTS DIAG; 99-02 WIRING DIAG - Firebird Nation

The label on the radiator cover would look like this (but this one is for a 95):

Courtesy of Shoebox

Click the image to open in full size.

On your 93, the fuel pressure regulator is in a slightly different position, the PVC hose is different (same as 94) and you will not have the line that shows "to dist".... that's for the vented Optispark, that was used 95 and up.
__________________
Fred

94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400 + GearVendors OD / Strange 12-bolt - 4.11's / 300-shot N2O / Spohn suspension / 6-pt roll bar with integrated SFC's / AutoMeter instrumentation / MoTeC M48Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.
Injuneer is offline   Reply With Quote
Old 07-12-2014, 05:23 PM   #5
Registered User
 
Join Date: Jul 2014
Posts: 6
Re: Vacuum Line Diagram and routing

Quote:
Originally Posted by Injuneer View Post
LINK: 4TH GEN SERVICE MANUALS; 82-02 PARTS DIAG; 99-02 WIRING DIAG - Firebird Nation

The label on the radiator cover would look like this (but this one is for a 95):

Courtesy of Shoebox

Click the image to open in full size.

On your 93, the fuel pressure regulator is in a slightly different position, the PVC hose is different (same as 94) and you will not have the line that shows "to dist".... that's for the vented Optispark, that was used 95 and up.
Decent! I found the diagram on my radiator cover. I didn't even look at it in the beginning. So in other words do I have to worry about the "to dist" line?
BlackZ28_93 is offline   Reply With Quote
Old 07-12-2014, 05:33 PM   #6
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 42,749
Re: Vacuum Line Diagram and routing

No. Your Opti is "unvented" and doesn't have a vacuum connection. But the vacuum connection for your PCV valve is not under the throttle body. There is a U shaped hose thar goes from the PCV to one of the vacuum ports a few inches behind the PCV. I'll post a pic later when I'm not on my phone.
__________________
Fred

94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400 + GearVendors OD / Strange 12-bolt - 4.11's / 300-shot N2O / Spohn suspension / 6-pt roll bar with integrated SFC's / AutoMeter instrumentation / MoTeC M48Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.
Injuneer is offline   Reply With Quote
Old 07-15-2014, 06:41 AM   #7
Registered User
 
Join Date: Jul 2014
Posts: 6
Re: Vacuum Line Diagram and routing

Quote:
Originally Posted by Injuneer View Post
No. Your Opti is "unvented" and doesn't have a vacuum connection. But the vacuum connection for your PCV valve is not under the throttle body. There is a U shaped hose thar goes from the PCV to one of the vacuum ports a few inches behind the PCV. I'll post a pic later when I'm not on my phone.
Decent. I'm waiting for that pic. I'm going to put some more work into it today.
BlackZ28_93 is offline   Reply With Quote
Old 07-15-2014, 12:01 PM   #8
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 42,749
Re: Vacuum Line Diagram and routing

Click the image to open in full size.

Looking at the connections:

-top, right is the brake booster vacuum line.

-below the brake booster, slightly to the right of it, is the vacuum connection for the "U" shaped line from the PCV valve - you can't see the actual connection in the picture.

-top, left is the connection for the EGR vacuum hose. Mine as a second line tee'd into it, because I converted to a vented Opti. On yours, the 90-deg elbow from the EGR hose will go directly to the nipple on the intake manifold.

-below the EGR connection is a grommet for the PCV valve. The valve sticks into a passage that connects to the lifter valley at the bottom of the intake manifold.

This shows the line from the upper connection on the passenger side of the throttle body to the passenger side valve cover:

Click the image to open in full size.

Shoebox shows the connections on the passenger side of the intake - vacuum for: HVAC, fuel pressure regulator, EVAP purge

http://shbox.com/1/evap_sol.jpg
__________________
Fred

94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400 + GearVendors OD / Strange 12-bolt - 4.11's / 300-shot N2O / Spohn suspension / 6-pt roll bar with integrated SFC's / AutoMeter instrumentation / MoTeC M48Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.
Injuneer is offline   Reply With Quote
Old 07-15-2014, 12:01 PM
 
Reply Post New Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 11:58 AM.

 

Copyright © 1996-2013 CamaroZ28.Com. All rights reserved.