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Old 02-13-2004, 01:54 PM
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fixing some things - exhaust leak and eng clean

fixing some things - exhaust leak and eng clean


85 v6 2.8L 4x4 s-10.

I already replaced the doughnut gasket on the exhaust, but I'm still getting a little ticking exhaust leak from (what my best guess is) the exhaust manifold.
The exhast manifold is really rusted and one of the bolt heads (pass side, closest to firewall) is broken off (big clue).
I want to take off the exhaust manifold (lots of PBblast or liquid wrench I fear), get new bolts, and hopefully add a gasket to it (which i don't think come stock, do they?).

Anybody know what gasket i should get for this model and where?

Then, to see how bad of oil leaks I really have and before I replace the valve cover gaskets, I want to clean this oiled up\filthy engine.

Can anybody reccomend the BEST eng cleaner to use that will get all this crap off the outside of my engine?

I've heard of spray on cleaners that you can hose off with water that should work, but don't know any brands that are best.
I will be covering the carb and distributer with a plastic bag beforehand...but is there anything else I should cover up before cleaning?

thanks (again),
JD
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Old 02-13-2004, 03:11 PM
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I recommend Gunk Engine Bright (not the foamy type) for cleaning the engine. Follow the directions on the can.

As for the manifold, all I can say is "good luck".

We used to see a lot of those heads come in and all of them had most if not all have broken manifold bolts. Some were broken to start with (like yours) the rest broke upon disassembly (like yours will).
You will probably be better off pulling the heads and manifolds together and taking them to a machine shop and having them remove the manifolds and broken bolts. You may have to have the manifolds milled and it would be a good idea to have the heads checked over, also.
No matter what you do, the situation you have won't be easy to fix.

You will want to use manifold gaskets when you put it back together. Use the stock one you would get a parts store. If you pull the heads, get a head set and they will come with it.
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Old 02-13-2004, 04:48 PM
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****, maybe I should bag the manifold gasket. You're probably right. It's working now and the exhust leak is minimal (little ticking). I don't feel like spending any more than it's worth.

I wonder if I can and put a nut on the broken bolt tip ( douse it with PBblast or liq wrench) - tighten that down for a quick dumb fix?

JD
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Old 02-13-2004, 05:08 PM
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no usually if your exhaust leaks long enough it blows the gasket out
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Old 02-13-2004, 07:23 PM
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isn't the gasket already blown out? (why I have a little leak).

seriously, I don't have too much $ to have the head taken off and having those manifold bolts break off inside sounds like a nightmare.

If I douse it with pb for days in a row and then try it you think I can get the bolts off alright (without breaking)?

How much do you rough estimate to have somebody do it?

thanks for the replies btw,
JD
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