XJ XJ8 / XJR ( X308 ) 1997 - 2003

Where To Tap Vac Line For Boost Gauge?

Thread Tools
 
Search this Thread
 
  #1  
Old 05-25-2016, 03:43 PM
xjrjag's Avatar
Senior Member
Thread Starter
Join Date: Jul 2015
Location: Northwest, US
Posts: 228
Received 34 Likes on 20 Posts
Default Where To Tap Vac Line For Boost Gauge?

Going to be installing a boost gauge into my XJR and was wondering where the best place is to tap for the vac line? On a few of my older turbo cars, I ran directly off of the intake manifold or fuel pressure solenoid, where available. Not 100% sure where I should tap on this vehicle though.
 
  #2  
Old 05-26-2016, 06:58 AM
Highhorse's Avatar
Veteran Member
Join Date: Feb 2013
Location: Trying to escape Central Florida
Posts: 4,675
Received 1,795 Likes on 1,317 Posts
Default

You may want to ask Waterdragon, he's done some attachments and mods. Perceptively I agree with the takeoff from the intake, but I'd want to check with someone who's done it.
 
  #3  
Old 05-26-2016, 12:55 PM
cybercg's Avatar
Senior Member
Join Date: Sep 2012
Location: Nashville
Posts: 218
Received 80 Likes on 54 Posts
Default Inquiring Minds Want to Know

Originally Posted by xjrjag
Going to be installing a boost gauge into my XJR and was wondering where the best place is to tap for the vac line? On a few of my older turbo cars, I ran directly off of the intake manifold or fuel pressure solenoid, where available. Not 100% sure where I should tap on this vehicle though.
I would like to know where you will mount the vac gauge. Pics would be great!
 
  #4  
Old 05-26-2016, 01:11 PM
xjrjag's Avatar
Senior Member
Thread Starter
Join Date: Jul 2015
Location: Northwest, US
Posts: 228
Received 34 Likes on 20 Posts
Default

Originally Posted by cybercg
I would like to know where you will mount the vac gauge. Pics would be great!
I already made my pod and everything, just waiting on the wiring end until i figure out where to tap the line.

But I modified my drivers side defrost vent to hold the boost gauge and it looks fairly stock after I painted it.
 
  #5  
Old 05-26-2016, 04:29 PM
Highhorse's Avatar
Veteran Member
Join Date: Feb 2013
Location: Trying to escape Central Florida
Posts: 4,675
Received 1,795 Likes on 1,317 Posts
Default

Here's a link to one of Waterdragon's threads, he has a new car, but posted some of his old stuff....https://www.jaguarforums.com/forum/x...ue-vdp-162181/
 
  #6  
Old 05-28-2016, 08:53 PM
greverrr's Avatar
Senior Member
Join Date: Apr 2013
Location: Mont Vernon, NH
Posts: 301
Received 104 Likes on 78 Posts
Default

This thread should help you if you haven't found out already Specifically post 4+5.
https://www.jaguarforums.com/forum/x...install-70090/
 
  #7  
Old 05-31-2016, 02:21 AM
xjrjag's Avatar
Senior Member
Thread Starter
Join Date: Jul 2015
Location: Northwest, US
Posts: 228
Received 34 Likes on 20 Posts
Default

Completed the install of the boost gauge. There is a PERFECT spot to tap the vac line. It was mentioned in a previous thread that there is a vac line coming off of the "V8 cover" and it is right there on the passengers side. I traced that line and it actually has a T fitting on it. That T fitting goes to the FPR and then the other side actually has a vac cap on it. I removed the cap and put the tubing that came with the boost gauge there. The rest was a matter of routing the line, all the wiring to the gauge and finding a 12v key on source.
 
  #8  
Old 11-05-2023, 01:56 PM
booshiba's Avatar
Member
Join Date: Jan 2021
Location: Texas
Posts: 66
Likes: 0
Received 19 Likes on 11 Posts
Default

Originally Posted by xjrjag
Completed the install of the boost gauge. There is a PERFECT spot to tap the vac line. It was mentioned in a previous thread that there is a vac line coming off of the "V8 cover" and it is right there on the passengers side. I traced that line and it actually has a T fitting on it. That T fitting goes to the FPR and then the other side actually has a vac cap on it. I removed the cap and put the tubing that came with the boost gauge there. The rest was a matter of routing the line, all the wiring to the gauge and finding a 12v key on source.
Are we talking about left hand or right hand drive cars? I can't find a single vacuum like on my U.S. spec passenger side where everyone is talking about.


NVM, I found it 😌
 

Last edited by booshiba; 11-05-2023 at 02:50 PM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mcphill
F-Type ( X152 )
10
08-31-2022 11:15 PM
Oxidizer2k
XF and XFR ( X250 )
0
01-02-2021 10:38 PM
carlorner
S-Type / S type R Supercharged V8 ( X200 )
5
06-08-2011 05:05 PM
nglshmn
XK8 / XKR ( X100 )
1
10-04-2009 06:13 PM

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


Quick Reply: Where To Tap Vac Line For Boost Gauge?



All times are GMT -5. The time now is 08:28 PM.