Just curious as to how many people here have taken the time to tap and plug the egr hole in the head before it reaches the manifold instead of just doing the egr block off plate.

 

I have done it 1 time, and I think the reason was-
I was bored, drank too much beer, and convinced myself it was worth my time

Haven't done it to another car since

 

if you have manifold off why not do it. if your taking it off for that no reason for that time

 

I think I might (MIGHT) have been one of the first people to do that, or at least talk about it publically as evident in a few threads floating around here...

If you have the head off the car, there really isn't a reason to NOT do it as you can completely reverse the mod. (Just take the NPT Plug out)

You can do it with the head on the car, but I would make sure to pull the #1 spark plug out of the head, tap the hole and use a vacuum to suck out all the tap shavings left over. (You will want to make sure the valves on #1 are open so you get a good flow of air through the EGR port to suck the shavings out once its done.)

Plus, use a stainless 1/8" NPT plug as it will handle higher heat than a brass one typically found at hardware stores.

 

I installed the egr plug on head while still on the car.

 

Why hasnt anyone considered plugging the exhaust side of the head so you wouldnt have any exhaust gasses in the head vs. plugging the intake side you will have some gasses inside the head everytime, possibly creating more heat? Wouldnt that be more beneficial? I havent seen how it comes in through the exhaust side so just wondering why not plug it at the source vs the intake side.

 

I was wondering the same thing,i actually did it on my head when i was building my engine,i used a brass plug,worked as intended.I still plugged the intake side too for good meassure

 

Cool, I would rather do it that way imo. Would there be any issues with plugging both ports as far as heat cycles possibly causing condensation inside that chamber where it cant escape and possibly causing premature oxidation?

 

I honestly don't know my friend,don't think so though,or hope not.

 

I dunno, I don't think I could do this, I am too much of a sissy thinking I would get shavings in the motor...

 

DSMers have been doing this for, well let's say quite awhile. It is inconvenient to do if the head is on the car which is the number 1 reason it doesnt get done. With the head off it isnt as much of a ***** to run a 3/8npt in it but its still not what I would call fun.

Aaron

 

Thanks for the info. Guess ill jut do a block off plate for a while

 

You can also pull the intake manifold and have someone tig up the EGR passage as close to the head as possible.

 

Bumping this thread. So, on the Evo 9 head I have, on the intake side, it looks like there is black plastic on the EGR port? I can still put an 1/8" NPT in there? And on the exhaust port, it's as easy as putting a 3/8" NPT in there?

Just want confirmation so I don't look like a dumb *** when I am talking to my machinist

 

Any pictures?