Hi all, I'm gonna be removing my upper intake manifold soon, but I had some ?? first. I'm aware of all the stuff I need to take off like the pcv, brake booster vac, and everything else. I just need to know what size hex will take off the intake bolts?? It looks like a 7 or 8mm, but I'm not sure, and I don't want to buy the wrong one by mistake. I'm also having a hard time understand what happens to the throttle body once everything is off? Does it just sit there or does it come out aswell? If I have to pull it out, then how do I take it out?? Its connected to the throttle cables and the hammers. I don't see how that can be removed. Please help.

Thanks,
Kevin

 

its all removable, make sure you buy all new gaskets/seals for the parts that you will be taking off, seeing that you have never done this before your old ones will probably crack or break when you take things apart.I am also going to advise getting or atleast trying to replace all hoses that you touch during this process. most of the vacume lines will be hard and brittle and will crack or break, this is a good time to replace them. the throttle body itself is removable and i suggest cleaning that as well as the manifold.you can buy some throttle body cleaner in a spray can, use it generously, if your throttle body is dirty you will feel the difference when your done, just be sure to wear gloves and stand up-wind cause that stuff is nasty. as far as the throttle cables go , they come off easily, notice on the end of the cable there is a little hammer thing, you will be able to slide it off. its not too hard. make sure that you clamp down the coolant lines toward the back of the engine so you dont get any spillage.

 

If you buy a hex bit for your rachet from someplace like Sears, I would think you would be able to take it back and exchange it for the other size without any problem. I would look to see if it fits anything else on the engine, so you won't need to buy that one later.

 

I bought the upper intake gasket the other day. I plan on removing the whole manifold and soaking it in simple green overnight to really clean it out. I also plan on spray painting it silver to resore the look of it.

Is it ok to totally submerge the throttle body in simple green?? I don't want it to get messed up or rusted.

My vlave covers are also looking kinda ****ty. I might also take those off and paint them. I also know there are gaskets that will need to be replaced.

Later,
Kevin

PS Do the throttle hammers come off the throttle body or are they permanently there?? I don't fully understand how the cables and hammers detach from the throttle body.

 

Simple Green is not the sort of thing to clean throttle bodies with. Don't drench the Throttle Positions Switch (on the side of the TB either. I don't think Simle Green will do much for the baked on crud inside the manifold either.

 

I kinda figured that it wouldn't be smart to soak the actual tb, but I'm sure the manifold if fine. What will take of braked on crude??

Thanks,
Kevin

 

Injector cleaner, brake cleaner, alcohol. If the manifold is apart, and you can see the runners, try a brass brush.

 

I recently replaced my injectors and had to remove the upper and lower intake manifolds so hopefully i can give some info...use the 7mm to remove the intake bolts, i'd also suggest buying either a chiltons or haynes guide for your car from the local auto parts store. i have both since i thought i lost one and had to replace it, according to both mauals you have to loosen and tighten the bolts in a specific order why? beats me

 

Specific tightening sequences, and torque values are to prevent warping the items you are bolting together. This is very important for joints that have to gas tight like intakes, heads and exhausts.