914-4 vacuum hose locations Options

[monkei]

hello, patrick a. here. just accquired a 1974 1.8l 914-4 and i have a good bit of work to do to make this vehicle in any sort of shape to go long distance cruisin/autocrossing. various electrical gremlins/nasty old rubber fuel lines and a lot of general tune up needs to be taken care of. im having trouble figuring out where some loose vacuum lines are to be routed. this first picture shows some vacuum valve that i believe is routed to that evap. can that looks like a tiny muffler and has a cut line that im not sure where to put:

[2-OH!]

Monkei:

I have found the Pelican diagram to be...Well, not so correct...

Just run a line from the back of the vacuum advance canister to the one port on your throttle body and the line from the AAR valve to the top port on the air cleaner...

The decel valve can technically be removed...Just plug the ports you remove it from...

As for the charcoal cannister, I would leave that connected...If you don't you may get gas fumes...the large ports on the cannister are for air from the fan housing...There is one on the housing itself near the fuel injection brain and another on the other side in the tin near where the intake runner joins the #2 intake port...The cannister has a single large port on one end, hook the air inlet from the fan housing (or tin) there, and the other end of the cannister has a large port and a small one...The small one goes to a line that will either be in the tunnel down the center of the car or out through the rocker panels but up to the small port on your expansion tank...The large port on that side goes to another port on the air cleaner...

Remember, everything above the throttle body is air, everything below the throttle body is vacuum...

Make certain (by feeling all around the throttle body and plenum(the black can the Throttle body is bolted to) that all ports are plugged. I only have two hoses on vacuum now, one to the front side of the AAR valve and one to the MPS...The vacuum advance cannister, backside (advance retard) to the throttle body...There is one more hose to keep connected and that is the oil fill housing to the air cleaner...It's the largest hose in the compartment and goes to a fitting on the drivers side, front of the air cleaner...

The small hose on the expansion tank is "air-in" not vacuum...If you hook vaccumm to it it will implode, or cave in...Will do the same thing if you plug it and your performance will suffer as you get close to the bottm of a tank of gas...The tank system needs a breather to put air in as you take (use) gas out...It equalizes the pressure...

Remove all the smog stuff if the guys down there tell you the car will still pass smog test...That includes the pump and the manifold...If you are not going to take the engine out, then for now just remove (cut) the belt off the pump...Manifold removal requires you to plug the heads and the belt tripod is bolted to the fan and not recommended to be removed in the car...

There is a factory rubber nipple in a drain hole down on both sides of the area where you have standing water...Push the nipple out and do not replace it...It will only clog again with debris...

Sorry for the long post but my pictures won't post and it's hard to explain without them...

Good Luck...

2-OH!