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Originally Posted by aking3000gt
Can someone please assist me in removing my exhaust manifolds so that i may replace my gaskets.... i have a 94' 3000gt VR4... i have leakage in either the front or rear ... just going to replace both .... would like to do it myself if its fairly easy thanks
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eww, you'll have to pull your turbos to do that.
gosh, where to begin, and its a pain in the ass if you still have all the studs, which is why i pulled all my studs and put bolts in its place.
Your gonna have to drain your oil and coolant to begin.
Then, you'll have to pull your radiator out and your upper intake manifold, and some intercooler piping thats in the way. Also, any intake piping and intercooler piping coming off the turbo needs to be disconnected from the turbos.
Now, you'll have to disconnect your oil return lines from the oil pan, then you can disconnect the other oil lines and all coolant lines from the turbo cartridge. Then you'll need to disconnect the O2 housings/precats from the exhaust side of the turbocharger. (You can also remove the downpipe from the precats as well to make things a little easier, but is not necessary). If the rear one is too hard, you might have to pull the clamp from the turbine housing/cartridge connection and take it off that way. Then, you'll need to undo the bolts connecting the turbocharger from the exhaust manifolds. Once you do that, you can pull your turbos out.
Now, you can undo the nuts that connect the exhaust manifold from the heads, there should be 7 on each side. Then, you pull the manifolds off, replace the gasket, and put everything back together in the reverse order you took it off.
There will be some gaskets you will need to replace just cause you took the parts apart. The ones you will need to replace for sure are the ones that connect the oil and coolant lines to the turbo and the oil pan. The other ones should be good unless you destroy one of them. Hope this helps you get started. I've done two turbo swaps on my car, and have replaced the manifolds on it before, so i know how it is, but i do highly recommend removing the studs out of the turbos when you get them out, and use bolts in its place. It will make your life easier when putting the turbos back on.