Vacuum Gauge in Tpi - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 02-12-2009, 05:26 AM
Registered User
 
Join Date: Feb 2009
Location: vlc , Es
Posts: 5
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Vacuum Gauge in Tpi

Hi there :

I'm rebuilding a LB9 (305 tpi from a 88 chevy), i'm planning to hook-up a VAC gauge to check Vacuum. I'm gettin' confused .... where i can attach the fitting for gauge ? , in a carbed engine it's so easy , but there i'm gettin' stuck, i'm new on Fuel Injections.

Here's a VAC diagram of the engine.

Any ideas ?





Cheers , JF
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-12-2009, 05:32 AM
DaSouthWon's Avatar
I put up the tools against$300
 
Last photo:
Join Date: Apr 2006
Location: Memphis,Tennessee
Age: 35
Posts: 683
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
On the passengers side, at the back of the upper plenum there are 2 vacuum ports, one goes to your fuel pressure regulator and the other one goes to the air pump I believe after it tees off in several directions. You should be able to plug a vacuum gauge line to either one of these ports to check the vacuum if its temporary. If it's permanent, your gonna want a dedicated port for the most accurate reading.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-12-2009, 05:48 AM
Registered User
 
Join Date: Feb 2009
Location: vlc , Es
Posts: 5
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
It will be for permanent use , attached to a gauge in dash , how i can install this additional vacuum port ? it's a easy thing or a pain the *** ?

Thanks for your answer .

Cheers , JF
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-12-2009, 06:32 AM
RippinRon's Avatar
Member
 
Last photo:
Join Date: Jun 2004
Location: Thornbury, Ontario
Age: 33
Posts: 948
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Here some pics of the ports. The pic on the left show the pcv hookup on the drivers side. The other shows three ports. The one with the hose goes to the AFPR, i'm not sure where the other ones go.
Attached Thumbnails
Click image for larger version

Name:	tpivac1.jpg
Views:	110
Size:	212.5 KB
ID:	36234   Click image for larger version

Name:	tpivac2.jpg
Views:	113
Size:	282.8 KB
ID:	36235  

Last edited by RippinRon; 02-12-2009 at 06:39 AM.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-12-2009, 08:14 AM
Registered User
 
Join Date: Feb 2009
Location: vlc , Es
Posts: 5
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by RippinRon
Here some pics of the ports. The pic on the left show the pcv hookup on the drivers side. The other shows three ports. The one with the hose goes to the AFPR, i'm not sure where the other ones go.
Thanks for your answer , very good photos.
One from right picture , should go to brake booster , chech the diagram on my first post
In mine, i don't have free vacuum ports to attach the "T Fitting" for gauge , any suggestions ? I had to install a new VAC port ?



Cheers , JF
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 02-12-2009, 09:16 AM
RippinRon's Avatar
Member
 
Last photo:
Join Date: Jun 2004
Location: Thornbury, Ontario
Age: 33
Posts: 948
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Drill and tap somewhere in the plenum and install a hose nipple!?
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 02-12-2009, 09:30 AM
Registered User
 
Join Date: Feb 2009
Location: vlc , Es
Posts: 5
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by RippinRon
Drill and tap somewhere in the plenum and install a hose nipple!?
Maybe ?

i'll research on it!

Cheers , JF
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Port or Full time vacuum cool rockin daddy Engine 129 10-05-2010 03:00 PM
timing question Radchop Engine 7 11-19-2008 09:16 PM
No ported vaccum port in my Q-jet, help Augusto Engine 11 12-27-2006 05:04 PM
Ported Vacuum 72Orange Engine 18 08-07-2006 08:56 PM
Where is manifold vacuum port on Quadrajet 4mv? dr-data Engine 10 12-13-2005 04:41 PM


All times are GMT -6. The time now is 05:53 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.