Midpipe Gasket question

~C~ · September 5th, 2008, 06:03 PM

So I got my MAC o/r H and am going to install it. I was told NOT to use the gasket which came with the mid pipe as it is very thin and will not or may not seal properly causing an exhaust leak. I was told to use the ford gasket because it is a crush seal and it will not leak.

So I swing by Ford and pick one up. Costs 7 bucks. Figure good to go. I get home and lay the MAC gasket over the Ford gasket and see the MAC one is larger then the Ford one.....obviously, as the stock mid is 2.25 and the MAC is 2.5.

So here is my question.....if I go with the stock one, there will not be a nice flow of air through the passenger side pipe as there will be a little flap all the way around sticking into the pipe. If I go with the MAC gasket, I run the chance of a leak and having to pull it apart again to fix it. Of course I would use some lubricant on the gasket to make sure it is soft and pliable but not to sure it will hold up.

Which one should I use? Have you ever run into this and what did you do? If you used the MAC one, did it leak or did you have problems with it? Thanks!

SilverStang03 · September 5th, 2008, 06:04 PM

i used the one that came with my pipe with no problems at all. i have a mac h

PowerShiftz02GT · September 5th, 2008, 06:38 PM

alright man. I got my Mac H pipe and I was so excited to get the pipe that i didnt want to wait for ford to order the OEM Gasket. BIGGGG MISTAKE. So i put the stupid Shitty Mac Gasket on, and after 10 minutes of driving the Puttering began. I had already blown my gasket. After a couple of days driving around with my car sounding like Ass, i took the pipe off and Sure enough the Gasket was burned and had a million tiny holes in it. The OEM Gasket works like a Charm, no more leak. It is not too small for the Pipe. the Flow will be fine.

casper gt · September 5th, 2008, 10:43 PM

+1^ use the ford gasket unless you want to take it all apart again in a week to fix the leak

~C~ · September 6th, 2008, 10:59 AM

Hmm, well I was going to put the Ford one in anyways, but I wasnt sure about restriction with the flow. However, out of curiosity, did you guys just put the Mac one in dry or did you lube it with some grease or oil or something before?

PowerShiftz02GT · September 6th, 2008, 12:37 PM

i put mine in dry

BLK01SS · September 6th, 2008, 12:47 PM

^^^^ same here, dry as a bone

03TropicGt · September 6th, 2008, 01:02 PM

that could be why it didnt work

PowerShiftz02GT · September 6th, 2008, 10:29 PM

yeah, but the question is... Is it worth the Risk?

September 5th, 2008, 06:03 PM	#1
~C~ ~C~, The Other White Meat! Y2K YellowJacket GT ~TBD~ Join Date: Jun 2008 Location: West side B-More Posts: 1,697 iTrader: 2 reviews	Midpipe Gasket question So I got my MAC o/r H and am going to install it. I was told NOT to use the gasket which came with the mid pipe as it is very thin and will not or may not seal properly causing an exhaust leak. I was told to use the ford gasket because it is a crush seal and it will not leak. So I swing by Ford and pick one up. Costs 7 bucks. Figure good to go. I get home and lay the MAC gasket over the Ford gasket and see the MAC one is larger then the Ford one.....obviously, as the stock mid is 2.25 and the MAC is 2.5. So here is my question.....if I go with the stock one, there will not be a nice flow of air through the passenger side pipe as there will be a little flap all the way around sticking into the pipe. If I go with the MAC gasket, I run the chance of a leak and having to pull it apart again to fix it. Of course I would use some lubricant on the gasket to make sure it is soft and pliable but not to sure it will hold up. Which one should I use? Have you ever run into this and what did you do? If you used the MAC one, did it leak or did you have problems with it? Thanks! __________________ BLOWN Bumblebeast! 370 rwhp / 381 ft lbs ~Tuned by JJ at WMS "Like the blind man says......We shall see...."

September 5th, 2008, 06:04 PM	#2
SilverStang03 Hardcore Enthusiast 2003 Mustang Gt Join Date: Aug 2007 Location: Barrington RI Posts: 1,292 iTrader: 0 reviews	i used the one that came with my pipe with no problems at all. i have a mac h __________________

September 5th, 2008, 06:38 PM	#3
PowerShiftz02GT MM Fanatic 2002 Mustang GT Join Date: Nov 2007 Location: Michigan Posts: 4,204 iTrader: 13 reviews	alright man. I got my Mac H pipe and I was so excited to get the pipe that i didnt want to wait for ford to order the OEM Gasket. BIGGGG MISTAKE. So i put the stupid Shitty Mac Gasket on, and after 10 minutes of driving the Puttering began. I had already blown my gasket. After a couple of days driving around with my car sounding like Ass, i took the pipe off and Sure enough the Gasket was burned and had a million tiny holes in it. The OEM Gasket works like a Charm, no more leak. It is not too small for the Pipe. the Flow will be fine. __________________

September 5th, 2008, 10:43 PM	#4
casper gt Moderator 2012 300a gt auto 12.10@116 Join Date: Mar 2008 Location: creighton pa Posts: 7,697 iTrader: 4 reviews	+1^ use the ford gasket unless you want to take it all apart again in a week to fix the leak __________________ MM BRACKET RACING CREW CO-FOUNDER BAMA Performance Drag Team Founder 2012 300a GT auto

September 6th, 2008, 10:59 AM	#5
~C~ ~C~, The Other White Meat! Y2K YellowJacket GT ~TBD~ Join Date: Jun 2008 Location: West side B-More Posts: 1,697 iTrader: 2 reviews	Hmm, well I was going to put the Ford one in anyways, but I wasnt sure about restriction with the flow. However, out of curiosity, did you guys just put the Mac one in dry or did you lube it with some grease or oil or something before? __________________ BLOWN Bumblebeast! 370 rwhp / 381 ft lbs ~Tuned by JJ at WMS "Like the blind man says......We shall see...."

September 6th, 2008, 12:37 PM	#6
PowerShiftz02GT MM Fanatic 2002 Mustang GT Join Date: Nov 2007 Location: Michigan Posts: 4,204 iTrader: 13 reviews	i put mine in dry __________________

September 6th, 2008, 01:02 PM	#8
03TropicGt Enthusiast 2003 Mustang GT Join Date: Jul 2007 Location: Boston, MA Posts: 551 iTrader: 0 reviews	that could be why it didnt work

September 6th, 2008, 10:29 PM	#9
PowerShiftz02GT MM Fanatic 2002 Mustang GT Join Date: Nov 2007 Location: Michigan Posts: 4,204 iTrader: 13 reviews	yeah, but the question is... Is it worth the Risk? __________________

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