Re: Exhaust Manifold Leaks

Posted by Dennis Benson on October 10, 2008 at 06:45:41 from (205.188.117.76):

In Reply to: Re: Exhaust Manifold Leaks posted by PaMnd on October 09, 2008 at 20:42:59:

Hi PaMnd,

Sometimes when you hammer on the head of the bolt to loosen the threads and mushroom it out you can even get a wrench to fit it. Replace all the bolts anyway.

Try to not use easy outs, they break easily, and are almost impossible to get out if they break. They are harder than any drill bit.

Use six point wrenches and sockets.

Most of the time you won't need Heli-coils, but it's good to know they exist if you completely ruin a bolt hole.

A heli-coil kit is a thread replacement. The kit is about $20.00, and will have enough threads to replace several threads. There is a kit for every size thread, like 3/8 16. The thread in the casting will be drilled all the way out, it will tell on the tap which size drill bit to use. The tap is an oversize, and you will tap the hole for the new threads. There is a little plastic holder in the kit that you screw the new thread onto. The new thread will have a little tang across one end that has a notch in it. That tang gets screwed into the new thread in the casting, and when it's all the way in you remove the plastic tool, and use a small screwdriver and break the tang off, and with a magnet remove the tang from inside the hole. I'ts also helpful to use a drop or two of a thread lock compound on the heli-coil before screwing in the heli-coil. Heli coil kits and refills are available from most part stores. Advance Autoparts, NAPA, Auto Zone, or online at http://www.partsamerica.com Where you can get it for about $20.00 or http://www.napaonline.com where you can see a picture, and pay very much more. You can find your nearest retail outlet at either web site.

The engine should be fairly easy to raise if you have a floor jack. Remove the bolt on the manifold side that goes horizontally through the engine mount and bracket, and raise the engine with the foor jack. It would be nice if you can put a piece of wood under the oil pan so it doesn't get any more dented than necessary. Just raise up on the edge of the oil pan on the side that you want to raise, and it should make a big difference. It should stop raising when the bell housing reaches up to the floor of the vehicle.

Replies:

• Re: Exhaust Manifold Leaks PaMnd 08:43:30 10/10/08 (0)

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