Mac H Pipe install

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sporty4680

New Member

May 10, 2005

20

0

0

MARYLAND

Jun 7, 2005

#1

• Jun 7, 2005

• #1

Hello I am installing a Mac H Pipe on My 84 GT. I have also installed Factory ford 85 GT headers. What is that vacumm controled flapper valve in the drive side header? Right at the flange. Do I need to keep this hooked up? I am also removing the smog pump at this time. thanx

 

89MustangGX

I have nothing productive to add!

Jul 3, 2001

10,262

1

0

Mill Creek, WA

Jun 7, 2005

#2

• Jun 7, 2005

• #2

If I'm thinking of the same thing -- they are usualyl for helping the car warm up when cold.

 

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ss93cobra

Founding Member

Apr 10, 2002

1,422

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Wilmington NC

Jun 8, 2005

#3

• Jun 8, 2005

• #3

Yep. A pre-heater.

 

jbj454

New Member

May 10, 2005

44

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0

Jun 8, 2005

#4

• Jun 8, 2005

• #4

Just put a hose on it and block it off. You will be fine. I did before I switched over to a o/r x-pipe

 

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sporty4680

New Member

May 10, 2005

20

0

0

MARYLAND

Jun 8, 2005

#5

• Jun 8, 2005

• #5

Thanx for the help

 

maverick0716

Founding Member

Jan 12, 2002

3,924

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56

Chilliwack, BC, Canada

Jun 8, 2005

#6

• Jun 8, 2005

• #6

You won't get a great fit with that h-pipe using the dumb 85 headers, the end of one is a little longer than the other side. If you could find 86+ headers it will fit better.