Thought I'll post some pic of our jag with its retrofit brake booster.

 

Holy cow! Well, under the auspices of 'whatever works!'... Good job!

Scott

 

No Leaks, no dash warnings, brakes have more feel and work better, and less to go wrong.

 

Yes , very good , much talked about here in the UK , are you going to give us a write up on what parts are required and how you went about hooking it up ? , i'm certain there are plenty of people who would do it if they knew how .

I've often wondered if the X300 servo would fir the bill ,

Derek..

 

10mm Alloy plate cut to sharp/size then drilled to fit between xj40 pedel box and xj6 series 3 type vac. booster, a 3 xj6 type vac. booster, doz. bolts, then cut/spice wires to remove warning lights.
Fitted plate (steel) over where the pump was fitted on the front of the xj40 motor.
Drill/tapped a hole towards the rear of the xj40s inlet manifold for a vac. line bap fitting, Vac. line between inlet and booster.
Time -- 2 hours to fit.

Milling/drilling the plate up takes a lot longer -- Mill is not cnc.

(I did have to move the power steering fluid tank 15 mm forward, Vac. booster is a tight fit, but does have clearance all round it)

 

Remembering, of course, that New Zealand, is RHD.......Roger.

 

There's no need to drill and tap a hole for the vacuum takeoff..... if you look closely on the intake manifold, hidden very near towards the front right next to the fuel pressure regulator, the 3.6 has a blanked off vacuum for this very purpose. (it has a little rubber stopper on it... remove this stopper and hey presto... you have your vacuum!)

Discotech.....sure hope you didn't let any swarf drop into your manifold when you were drilling and tapping!

 

"next to the fuel pressure regulator, " -- My fuel pressure regulator is tee in to that vac. point (if its the one I think you mean?)
My old girl is a old ball model -- import from Singapore.
Used a Vacume cleaner when drilling and tapping , think shes Ok -- I've done 2000 mile since doing this mod.

 

I would love to modify my brake booster system. I have the same car that you have a 1988 XJ6 Vanden Plas. is there somewhere I can go to buy a modification kit or have a modification done or get instructions on how to do it myself. PLEASE PLEASE PLEASE...MORE INFO : )

 

Late last year I bought a complete kit from Jagart Pty Ltd in Melbourne. They don't seem to have a web site and there's no email address on the receipt I got from them, just a phone number: +61 3 9715 1777.
This kit installed without any problems and works well.