vacuum hose goes where???

[sac02]

hey guys, We're trying to get a '73 240z running again after many years of sitting still. The PO had visions of restoring it and did some disassembly and now we have to play connect the hoses without any idea what we're doing. All we have is a service manual (that looks like it's from WWII) with a few pics, and any engine pics we find on this website. Oh yeah, the emissions control system appears to have been mostly removed.

1)The vacuum advance on the distributor: It looks like it should have a vacuum hose attached to it, but it doesn't. Should something be attached here? There is a stray hose on top of the throttle butterfly on the front carb - could we have a match?

2)The flow guide valve: The bottom hose is connected, but the top isn't. As per the service manual, we think this small hose attaches to the back side of the air filter housing. correct?

3)There are also two connections for larger hoses on the air filter housing. One is connected to the top of the valve cover, right? The other one we're not as sure. The manual seems to suggest that it went to the air pump for the emissions control. Since ours is completly gone, should we just plug this hole?

If anyone has a really good picture of their engine with all their hoses and various accessories attached, we'd appreciate if you could post it.

TIA,

Robb and Mac

[Graeme Suckling]

Robb and Mac,

I assume you have the air cleaner incorporating automatic temperature control but with out emission control system,

i.e. only TWO large connections to the back side of the air cleaner pointing up.

1) BINGO! the vacuum advance connection for the distributor is located at the front carb. a vertical brass pipe between the carb. mounting nuts.

2) flow guide valve??? If you can point out the location I may be able to help.

3) As before, if you have only TWO large connectors at the rear of the air cleaner the front one is connected to the front carb. the rear one is connected to the cam cover.

All the above is clearly pictured in the Haynes manual in the Carburation: fuel and exhaust systems chapter page 45.