XJ XJ8 / XJR ( X308 ) 1997 - 2003

Q: AJ27/SC - oil pressure/boost sender tees

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Old Apr 2, 2011 | 03:32 PM
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Default Q: AJ27/SC - oil pressure/boost sender tees

Where could someone tee into lines or ports for aftermarket oil pressure and vacuum/boost gauges?

The usual candidate for oil pressure is to tee the factory oil pressure sender. Suggestions of secondary locations would be nice.

Then there is the vacuum/boost gauge. It has to see the pressure downstream from the supercharger. Is there a port somewhere?

If anyone knows the thread sizes of the ports, that would really cut down on the "remove, take a look, put it back, drive to parts store" routine.

The three selected gauges are:

voltmeter
oil pressure
vacuum/boost combo

Real needles please. No interest in siphoning data from the ECU whatsoever.
 
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Old Apr 2, 2011 | 10:39 PM
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Any insomniacs around?
 
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Old Apr 3, 2011 | 02:01 PM
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How about the after Sunday drive crowd then?
 
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Old Apr 5, 2011 | 12:39 AM
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Originally Posted by plumsauce
The usual candidate for oil pressure is to tee the factory oil pressure sender. Suggestions of secondary locations would be nice.
If you have an oil cooler, you could tap into that line, that one is on the pressure site (Was very noticable when the hose blew doing 70mph).

Originally Posted by plumsauce
Then there is the vacuum/boost gauge. It has to see the pressure downstream from the supercharger. Is there a port somewhere?
The supercharger outlet (that has the "V8" on it) has a outlet on the right hand side, that is used for the fuel pressure regulator, you can tap in here.
 
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Old Apr 5, 2011 | 12:43 AM
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Thank you very much!

I was pretty certain that you intimate knowledge of the engine would be helpful in the end.
 
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Old Apr 5, 2011 | 03:23 AM
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I would echo the above.
 
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Old Apr 5, 2011 | 03:30 AM
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Thank you both for coming through in a pinch!

It is very much appreciated.
 
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Old Apr 7, 2011 | 12:24 AM
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the plate on top of the super charger has a boost /vacuum line you can tap into that,ill see if i can snap some pics in the morning for you
 
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Old Apr 7, 2011 | 03:01 AM
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Originally Posted by Teck4Jag
the plate on top of the super charger has a boost /vacuum line you can tap into that,ill see if i can snap some pics in the morning for you
Thanks! That would be ideal.
 
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Old Apr 7, 2011 | 11:37 AM
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thats the only location you can tap in for boost
 
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Old Apr 7, 2011 | 09:08 PM
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Originally Posted by Teck4Jag
thats the only location you can tap in for boost
Thanks for remembering!

(attached picture as thumbnail to preserve for future readers)
 
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