plugging smog holes

SilverFox90

New Member

May 11, 2004

80

0

0

central, IL

Jul 28, 2005

#1

• Jul 28, 2005

• #1

i have eliminated my smog pump and want to plug all the lines.....the line that runs to the x-pipe i blocked off but im tryin to decide what to do about the lines that run to the heads....there is a bulb shaped thing in the tubing that i believe is a one way valve....if i just leave this on with with heads be plugged?...also would anyone happen to know what size bolts i would need if i removed the lines from teh back of the heads to plug them?

 

sgarlic

Founding Member

Apr 21, 2001

3,085

1

56

Jul 28, 2005

#2

• Jul 28, 2005

• #2

I think what most people do is put some hose on it, and then put a bolt in to the hose.. I think you can also use a thermactor plug .. or something like that.. there's a thread not too far down with the answer.

 

9

91RRLX

New Member

Jul 26, 2004

34

0

0

Timberlake, NC

Jul 28, 2005

#3

• Jul 28, 2005

• #3

I've heard that you can actually go right up to your local ford parts counter and ask for it as a "Smog Plug" for the cylinder heads.

I'm doing a cylinder head article for Muscle Mustangs& Fast Fords and after asking around a little that's what I found. I haven't ordered them yet, nor do I have a part number. I'll be sure and post it when I do.
J

 

legalize420

Active Member

May 21, 2005

1,541

1

37

South Florida

Jul 29, 2005

#4

• Jul 29, 2005

• #4

i got a bypass plug in the help section of the parts store. i just removed the rubber hoses from the smog pump and put a plug over the tubing that goes back to the heads. i also removed the tube going back to the midpipe. i had to use a rotary tool and cut it in three places before it was able to slide out. go to the parts store and get the rubber bypass plugs.

 

88 Fox GT

Active Member

Nov 18, 2002

1,674

0

36

Iowa

Jul 29, 2005

#5

• Jul 29, 2005

• #5

http://store.summitracing.com/partd...t=TFS-51400265&autoview=sku&Ntk=KeywordSearch

These are what I used. They are a pain in the ass to get in because of all the soot buildup inside the hole.

 

mustangjoe87

Member

Jul 23, 2004

364

0

16

Harrison Twp., Michigan

Jul 29, 2005

#6

• Jul 29, 2005

• #6

i just bent mine closed and welded the end up for the time being. (didnt have time to buy the plugs)

 

C

Carbed86GT

Member

Jun 30, 2005

33

0

6

Champlin, MN

Jul 29, 2005

#7

• Jul 29, 2005

• #7

I've done it by welding the smog tube or using a 5/8 11 bolt about 3/4" or 1" long. To use the bolt as a plug you'll need to figure out a way to get the carbon out of the hole. This will be a difficult task with the engine in the car. With the heads off the car I use a wire brush drill bit that looks like a christmas tree to get the carbon out.

 

89stangalang

New Member

Dec 23, 2003

58

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0

Jul 29, 2005

#8

• Jul 29, 2005

• #8

So is there a one way check valve for the smog lines or do you have to plug them? I am also about to delete the smog because the lines are directly in the way of my discharge tube/bypass valve.