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.
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.
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.
But I modified my drivers side defrost vent to hold the boost gauge and it looks fairly stock after I painted it.
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/
This thread should help you if you haven't found out already
Specifically post 4+5.
https://www.jaguarforums.com/forum/x...install-70090/
Specifically post 4+5.https://www.jaguarforums.com/forum/x...install-70090/
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.
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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.
NVM, I found it 😌
Last edited by booshiba; Nov 5, 2023 at 02:50 PM.
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