Hi, I would like some advice on fitting a replacement remote servo unit. I have bought and fitted a powertune aftermarket unit and it has made no difference at all to the feel of the pedal. The instructions say it must be connected via a vacuum hose to a suitable vacuum source e.g. the engine induction manifold or vacuum pump. It says on some vehicles the manifold is already tapped and fitted with a removable plug, otherwise it will be necessary to drill and tap the manifold.
I would need to order the relevant adaptor, pipe and in line non-return valve, the adaptors come in three different sizes 1/8 BSP, taper. 5/8X16 Whitworth, and 5/8 UNF thread.
Where would the connection go and what size adaptor will I need. I would presume the inlet manifold is what the carbs are attached to, this is referenced as Stanpart 311749 although it looks to me that the front of the manifold has a tube connected to the bottom of the water pump and the back of the manifold is connected to what I think is the heater unit and off the bottom of that is another tube returning under the exhaust manifold to the water pump.
Is the manifold a duel unit, having water running through the top of it and the underneath section the inlet, separated in the casting. If this is the case where would be the best place to drill and tap it. Any help would be appreciated, photos or advice on other peoples experience with these, as you may gather I am not a mechanic and this is my first project.
Thanks Ken
