During the engine rebuild (1.8l type 4), I’m removing the EGR. I’ve blanked off all three ports on the heads and am going to make up blanking plates for the inlet manifolds so the main EGR metal tubing is redundant. on the below (pre-rebuild) photo, the highlighted hose goes from vacuum system in to the EGR which obviously won’t be there any more. Is it simply a case of blanking this off, or am I creating a sealed system that won’t allow vacuum by doing that?! If the latter, what’s the best way to go about sealing off the old egr system? Sent from my iPhone using Tapatalk
Short of the above, is there such a thing as a vacuum diagram anywhere so I can try and work out what I need to blank off to remove the EGR? Closest I’ve come is one on ratwell.com but that goes in to all sorts of details about vacuum hoses running to an oil bath?!
The holes in the heads are connected to the exhaust . Block them off and all the exhaust gas goes down into the heater box rather than into the EGR pipe as well. Originally the EGR collected low oxygen gases from the exhaust, let them cool in the pipework and fed them into the inlet manifold controlled by the EGR valve that would open at idle. Block off where that EGR valve output gas feed goes into the inlet manifold and there wont be a leak there either.
Great, cheers @mikedjames. Just to check my understanding, if I blank off just before/after the highlighted hose on that picture, no vac issues? I’ve made up a couple of stainless blanks to cover the inlet manifold holes (which would be fed by the highlighted hose), just want to make sure that removing the valves themselves too won’t blow anything up
