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Date: Thu, 9 Dec 2004 01:18:21 +0100
From: "OKOK!" <rootnospamlhost.not>
Subject: Re: 99 Turbo vacuum hoses?

Hi Dave, my 1980 99 is NOT a turbo, but I can open the bonnet and take some pictures for you ... Richard. "Paul Halliday" <> wrote in message > in article, Dave Hinz at > wrote on 07/12/2004 19:10: > > > The 99 Turbo is ready to soon as I get the vacuum hoses in > > the right place. My manuals are all either too old, or too new, to show > > a '78 99 Turbo's vacuum routing. > > Ah, what a fun job. Hope you bought 10 metres ... It get addictive :) > > > Can anyone tell me: > > > > 1. Where does the vacuum advance on the distributor go to? > To the nipple directly on top of the throttle. It might be the inner side of > the throttle body on the B type. > > > 2. Where does the small diameter port on the breather on the valve cover > > go to? > To anywhere after the throttle. On the H type (and beyond), they say that > this pipe should not have a T junction in it. It should also have a one-way > valve in it that should allow suction away from the crank case, but not > boost towards it. On my 900 T8, this goes to a plastic connector on top of > the intake manifold, held in with a "top hat" grommet. That said, I have > seen this one blocked off one more than one 99T engine!!! > > > 3. Where does the hose on the valve next to the ignition coil go to? This > > is the "you just stomped the turbo, I'm opening for a few seconds" valve. > Buh! Dunno, sorry. This is the pressure regulator valve, right? A two port > switch that takes from the intake manifold and then goes onto the dash > gauge. If it's a one port valve, I think it's part of the fuel boosting > system, but I wouldn't like to make a suggestion about where it goes. I'm > not sure about this one. > > > 4. There's a fitting on the side of the intake manifold, a large hose goes > > to the brake servo. Where does the small fitting connect to? > Any of the unconnected vac hoses, I would think. On the H type, that > connector also has two smaller ports that go to (a) the vac canister for the > air vents and (b) across to the fuel thingy under the distributor. Maybe > that's where your hose in 3. Goes albeit your distributor is in a different > place to the later H type. > > > 5. There's a brass fitting on _top_ of the intake manifold, right near the > > cold-start valve (downstream from the throttle). What goes there? > Water injection? It is possible that the advance capsule (1.) could be > plumbed in there. Is it a place for something to screw in, or does it > protrude? I think that would be best used for 4 and put the other vac pipes > (except the distributor advance) down to the connector where the brake servo > joins, using a T piece if necessary. > > > It works out that I've got 3 things that need vacuum, and only two places > > to get it from, no matter how I add things up. What am I overlooking, please, > > and what should go where? My pictures, of course, don't show everything I > > need (isn't that always the way)? > > Essentially, if it's a vac pipe it needs to go after the throttle ... But > you know that. The vac advance does need to go to the area directly on top > of the throttle. > > Paul > > 1989 900 Turbo S > >

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