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  #1  
Old 08-13-2011, 11:01 PM
GSPI GSPI is offline
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Default Whole Exhaust System Question

Ok, I've gone through and looked around a bit here for an actual 5.0 L exhaust system diagram of sorts so that I can understand the Mustangs' exhaust system from say 1986 and up (I understand that they are similar in design between 1986 through 1993). I found Walker's factory setup and I think this diagram is right:



Anybody have a decent diagram or photo of what the exhaust system is supposed to look like if the above diagram is not right? I understand too that people change these out and replace them with offroad pipes if they can or fix up the cats. I've found the recommendations on what is close to factory but I just saw an H-pipe configuration with 4 cats on it as well as one with only 2. I've also found a complete DynoMax system from offroad H-pipe to the Super Turbo Mufflers and the bright polished tips in a 2-1/2"diameter size.

What is right? Any suggestions?
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Old 08-14-2011, 07:26 AM
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exhaust tips should be 2 1/4 inches and stainless steel to be correct. Walker makes a nice exhaust for these cars. the diagram you have posted is correct for 86 - 93.

I believe walker has the 2 1/4 inch tailpipes. I have used them in the past and to be even more correct I do not clamp them, I have them welded to the muffler like the originals were. It makes for a much cleaner install.

the pipe in front of the muffler is bolted to the cat pipe, then welded to muffler inlet. Tailpipe lined up properly then welded to the output on muffler.

Be sure to push the respective front pipe and tailpipe up flush against the muffler before welding. If you want to get real serious take a set of old original ford mufflers, cut the banding and remove the factory heat shields, then reband them onto the walker replacement mufflers. that is about the best you can do if you don't have NOS stuff.

Jim Dangle at PPI has some NOS stuff but it is expensive.
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Old 08-14-2011, 09:32 AM
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Thanks for the answer Jim! Are the H pipes still available new or are there good used ones, what to look for? I saw in another thread that the cat back stuff is good from DynoMax/Walker (same company from what I see) and I also saw people looking at the VT turbo muffler as being good too so I guess that's pretty much settled but I guess I didn't see anything about the H-pipes that I could find when searching around the site.
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Old 08-14-2011, 01:36 PM
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Woof!? I just saw a price for the cat H-Pipe at NPD and it's $916.00! They also showed that it has a 4 cat system. Also, it shows that all those H-pipes are 2-1/2", I assume they reduce around the muffler area to the 2-1/4" to be correct like Jim said.
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Old 08-14-2011, 04:36 PM
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Quote:
Originally Posted by NoDrama43 View Post
Jim Dangle at PPI has some NOS stuff but it is expensive.
I wonder what he charges for an NOS cat-back setup with the stainless tips? I'm just curious.
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Old 08-14-2011, 05:13 PM
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This NOS H-Pipe alone is $899.99 at PPI from what I've found there and the Cat back is a "Call for Pricing". So if Walker is the OEM anyway, that would probably be the best choice for a replacement set no?
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Old 08-14-2011, 05:17 PM
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Quote:
Originally Posted by mustangretriever View Post
I wonder what he charges for an NOS cat-back setup with the stainless tips? I'm just curious.
The last time I checked the going price was $2,300.
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Old 08-14-2011, 06:20 PM
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That's CRAZY.
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Old 08-14-2011, 07:00 PM
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I bought two NOS h-pipes several years ago when they were selling on ebay for 250 to 275. Prices are out of control on them now like several other items.

I went to a car show today with my assigned HD motor unit. There was a guy there with a 1986 GT Hatch with 45k original miles. he just cut the original exhaust off last week and put a dynomax set of mufflers on. I am stopping by his place wednesday to pick up his old original mufflers with the heat shields in place. He says the mufflers may still be able to be used. If not I can use the shields....

NOS exhaust for 86-93 coupes is almost impossible to find anymore.
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the remaining three.

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Old 08-14-2011, 07:17 PM
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Since you brought it up Jim...



http://www.flowmastermufflers.com/se...ield&sc3=&sc4=

Do they look anything like these?

Might be an alternative.
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