StratfordShark

Well the intake is now resting on foam rubber supports to let me complete last disconnections.

My wife very decently let me use our vac to suck up the worst of the crap around the inlet tracts (mostly disintegrated foam from the rails). As soon as the manifold was on supports I plugged the tracts with rags.

Have a slight snag with taking off the breather hose which goes from throttle body to oil filler tube. I've disconnected it at the filler tube and the secondary vacuum actuator so no problem with slack. What's stymied me is how on earth do you undo the hose clamp where the hose is attached to throttle body (arrowed in photo)?

There's no access to the clamp screw from above the manifold as it's pointing straight up.

I am thinking of two options:

I have removed the clamp from the hose directly above (the screw is angled so you can easily undo it with screwdriver poked through manifold), so when this is pulled off the throttle body there may be more room to reach in and undo the breather hose clamp.

I have bought a replacement for this hose (it's the one which looks like 3 axes meeting in 3D!) so I could just cut through it. There must be a more elegant method though, and you still have to get access to the clamp when re-installing to tighten it.

So how have you guys undone this clamp, or was the screw just pointing in a more convenient direction in your intake?

One other note is that despite being able to clearly see the ISV connector, and having a Bosch disconnect tool, I gave up trying to get the tool on the connector to pull it. I will just undo the sub-manifold with the intake on its side and get to the connector that way.

The throttle switch connector is much easier to access. I haven't disconnected it yet but with the intake tipped forward it will be easier to get a firm pull on it.

Can see a lot of crud at the bottom of the valley. Can't wait to get at it properly!

Oh and when I disconnected the vacuum to the carbon canister actuator I tested it with a Mity Vac and found it doesn't hold vacuum at all! Will have to replace this, especially as I've bought a new y-piece for the carbon canister, as I'm assuming mine is broken.

linderpat

man, I hope the 86 intake R&R doesn't present this many challenges!

StratfordShark

They are only challenges to inadequate wrenches like me Ed. I bet most of my 'problems' would be a breeze to most of the people here!

marton

Now see if she will let you put all the bits in the dish washer for a good clean.

Marton

BPG_Austin

Awesome! I think I disconnected the hose from the cam cover breather and pulled the intake off around it, leaving the hose attached to the oil filler. I tried to leave the underneath stuff attached as much as possible to use as a sort of roadmap while reinstalling the new hoses. I know I cut at least one line off though.

I believe I did as you described above for the ISV clip. Tipped the intake on its side and used a small flathead screwdriver and needlenose to extract the clip. Looks good!

Bill Ball

Can't you just leave that breather hose attached to the throttle body as long as the other ends are detached until you lift the manifold high enough to get to that clamp?

One other thing that has caused problems on re-install--- Note carefully the position of the breather hose that runs from the front alongside the right side head to that 3-way that enters the throttle boot on the right side. It runs alongside the throttle bellcrank. It can go either below or above the bellcrank. If you get it wrong, it will get pinched against the bellcrank and cause the throttle to stick. Once the manifold is bolted down, it is very hard to reposition it correctly.

the flyin' scotsman

Use a longer screwdriver down through the intake or remove the intake with hose attached and remove when on the bench.

Try lifting the intake onto thicker blocks.............once you see the connectors you'll have a better idea of removal.

Bill Ball

It's easier just to use you hands to remove the ISV plug. These connectors, like the fuel injector connectors, respond to a little side-to-side wiggle and pull.

StratfordShark

Excellent Marton!

I have managed to get the fuel rails into the utility room to polish them but anything more would be pushing my luck...

Adrian

StratfordShark

I'll give the high lift a try Bill, but the problem seems to be just getting a screwdriver in position onto the clamp - easy if the clamp had been pointing down. I think it's just bad luck that it's in that position, but you've given me the idea that for the re-install I can just have the clamp pointing down.

When I discussed this job with Paul Anderson (he is The Man in the UK for 928s) he warned me about the same hose, so thanks very much for the details on how it should route. Paul also advised me the quickly check the throttle action and spring return by hand before the intake is bolted down.

StratfordShark

Yes it can't be mandatory to remove those wire clips, since the Bosch tool just allows you to get a good hold/pull on the plug without risk of damaging the wiring.

the flyin' scotsman

Man needs his own shop vac...........you can always use the excuse of going to do the vacuuming if getting grief for spending to much time with the 928 mistress.

StratfordShark

It looked like the other arms of the hose (they connect to oil filler and secondary vac actuator) would be hard to thread under various lines at front of engine to let me lift it when it's attached to the throttle body but it may seem easier in the morning!

I'll try that and the longer screwdriver befor eresorting to the cutters!

Thanks,

Adrian

marton

how about a right angled screwdriver? or one of those little screw driver heads with a 1/4 female connector for a ratchet head then attack it from the side?

Marton

Bill Ball

Right, don't wiggle it by the wiring. Grip the connector itself and wiggle side to side while tugging. Never had one not come off. Also, the wire clips are kept on the plug rather precariously by a dab of melted plastic, at least on the injector connectors. The plastic can chip off so nothing is holding the clip on the plug - SPRONG!! I spent a number of hours hunting a couple of them down when I last removed my injector harness.