haggis Posted December 22, 2018 Report Share Posted December 22, 2018 Hi guys, merry Christmas to you all, managed to squeeze a servo on the bulkhead of my Gt6, I run an oil catch can with a pipe off the rocker cover to the can, then a pipe to the inlet manifold with a PCV valve fitted. Where do I connect the vacuum pipe to the servo? Before or after the valve. Thanks hag Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 22, 2018 Report Share Posted December 22, 2018 it must be engine side of the manifold valve to collect any vacuum never anything on the breathing side Pete Link to comment Share on other sites More sharing options...
dougbgt6 Posted December 22, 2018 Report Share Posted December 22, 2018 H, As Pete says not off the rocker cover, it has to come from the inlet manifold. GT6 should/may have a ready drilled hole on the top of the manifold with, in your case, a blanking bolt. Doug Link to comment Share on other sites More sharing options...
haggis Posted December 22, 2018 Author Report Share Posted December 22, 2018 Thanks Pete & Doug but I’m confused, engine side is rocker cover isn’t it? Valve comes after catch can before inlet manifold? Hopefully picture makes sense. Hag Link to comment Share on other sites More sharing options...
NonMember Posted December 22, 2018 Report Share Posted December 22, 2018 No, Pete's terminology was perhaps confusing but "engine side" refers to the working bits - i.e. the manifold - not the incidentals like crankcase breathing. You need vacuum for the brake servo - the manifold produces vacuum, the PCV (pressure control valve) limits that vacuum so that the breather sees only a very tiny bit. So your servo pipe must be tee'd off between the PCV and the manifold. IF the bolt head on the balance pipe at the front carb is a plug, you could change that to a tapping and run the brake servo off there, instead. Link to comment Share on other sites More sharing options...
haggis Posted December 22, 2018 Author Report Share Posted December 22, 2018 Hi, thats what I had assumed was correct but was just checking The bolt is a plug from a previous owner who used this instead of the one in the centre for a basic one pipe catchment open can, no idea why. I will go with reusing it for the servo. Thanks for all your help. Hag Link to comment Share on other sites More sharing options...
dougbgt6 Posted December 23, 2018 Report Share Posted December 23, 2018 My servo pipe has a T piece to run my dashboard vacuum gauge. And close to the servo an external one way valve, the internal one didn't work too well, there was a reason the servo was cheap! Doug Link to comment Share on other sites More sharing options...
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