EGR pipe-exhaust manifold connection?

[JoeR]

How exactly does the EGR pipe attach to the exhaust manifold? I see a threaded nut that appears to thread into the manifold around the pipe. Anyone have any tips of photos of this being removed?

[ggzilla]

Yes, it screws into the manifold.

 

Here is one Datsun engine type. They all a little bit different, even different years of same model are different:

 

[datzenmike]

I assume you are just 'getting rid of all the smog crap' ? If so, cut the pipe about 3" from fitting and remove it and the fitting from the exhaust manifold. Crush pipe end flat in a vice or use a hammer. Curl the flattened end over to seal it. Alternately you can take the fitting to a hardware store and get a metric pipe plug to seal the manifold. This takes care of the exhaust and look clean.

 

Now the intake end. Because the pipe is no cut and open to the ait the EGR must be at least disabled. You can do this by removing the vacuum hose to it and sealing the end towards the carb. OR cut the pipe and remove the fitting and do the same as the exhaust side. If this is done the vacuum line need not be removed and sealed. If removing the EGR valve and the VVT that works it you will have to seal the hole on the intake with a block off plate or JB weld or something. Best to just leave it.

[JoeR]

No, unfortunately I have to live under the rule of CARB Nazis and cannot modify the system in any way. I need to take the manifold off to see if its cracked or not.

[Skulptr]

i used a pipe wrench on the exhaust side on mine. worked, but you cant use it in the back side of the intake.

[datzenmike]

Ah so. Try a pipe wrench but do it on a hot manifold. This will swell the hole size slightly. Go easy they are very soft fittings.

[Buzzbomb]

Soak it in PB Blaster before trying to get it off...I did this, and after the initial push, mine came off pretty easy with a short open end wrench. You'll have to do a little prying to separate it all, IIRC.

[JoeR]

Cool, I'll try the PB blaster.

[nissanprerunnerdavid]

How do you get rid of the smog stuff?? I dont ha e any regulations and would really love to clean up my bay a little bit. Anybody have some pictures diagrams of all vac line deletes and getting rid of all the unesasary smog and vac line?? Will that hurt my gas mileagae??

[nissanprerunnerdavid]

On my 85 z24 it is on the veryback and threads directly to the back of the manifold.