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Exhaust sizes?

Discussion in '2001-2005 Explorer Sport Trac' started by robzila, October 23, 2011.

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    1. robzila

      robzila New Member

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      Looking to buy a flowmaster 40 series but I don't know what size inlet/outlet is needed. Rather save the 30 bucks buying one online then in the shop. I have a 2004 ford explorer sport trac 4.0 v6 xlt sohc.

      Also! My rear brake pads need changing but auto shop says I could have two different types? Say what?
       
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    3. OffTrac

      OffTrac Elite Explorer

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      If you gotta have a Flowmaster, the 50 series will probably sound better on the 4.0 IMO. I really don't think Flowmaster is the best choice for our trucks but that's just my opinion. I'm the odd guy in this forum, though, because I think a V6 should be efficient and quiet.
       
    4. JohnnyO

      JohnnyO Moderator Emeritus

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      I have a Gibson, it makes a V6 sound about as good as it will ever sound. Frankly I think Magnaflow sounds better than Flowmaster. JMHO. I believe OE pipe size is 2.25".
       
    5. OffTrac

      OffTrac Elite Explorer

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      I couldn't be happier with my Dynomax Super Turbo, especially for $40. Anyone that considers a 40 series would not be happy with it, though. My wife's Tahoe with the 5.3 sounds amazing with the 50 series. Big difference between a 5.3 and a 4.0, though.
       
    6. MidnightRebel07

      MidnightRebel07 Elite Explorer

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      I had a Flowmaster 3" in/ dual 2.5" out with dual pipes and it sounded ok but Flowmaster rust's out way to fast. I redid my exhaust with a Magnaflow stainless steel single 2.5" in/ dual 2.5" out with dual pipes and it sound awesome, I also have the Randomn Tech Y-pipe and high flow cat on that made the biggest difference in sound and especially performance.

      The factory pipe size is 2.25". As for the rear brakes, there are phelonic (non magnetic) and metal calipers for rear disc brakes. the phelonic piston calipers have a small three prong clip and the metal one has a larger three prong clip. The one way to find out is to remove the caliper and pad to check the size of the clip.
       
    7. 2TimingTom

      2TimingTom Well-Known Member

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      Yeah, like a Honda.
       
    8. robzila

      robzila New Member

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      well theres a mix of opinions on muffler preference. I was initially leaning towards flowmaster because i found a lot of good responses to them but seeing all the different mixed opinions in the explorer forums i might have to do a bit more research. just not to sure what would be best because our st's are quite different from other vehicles. thanks for all the input and the explanation about the rear brakes.
       
    9. MidnightRebel07

      MidnightRebel07 Elite Explorer

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      No problem. Also look into Spintech if you want a really nice sound and remove the silencer on the tailpipe. Do a quick search on both these topics and there will be a couple threads about it.
       
    10. OffTrac

      OffTrac Elite Explorer

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      I by no means want to imply that I think Flowmaster is an inferior product. I rather like them. It's what I chose for my wife's Tahoe. It's probably what I'll put on my '69 Cougar. The rust issue with them isn't a concern in south Georgia, but I would be concerned with that in the rust belt.

      You're doing the right thing by looking around. That's what's great about forums like this. You may even decide on the Flowmaster 40 series. That wouldn't be a bad choice, just not my preference for the 4.0.
       
    11. robzila

      robzila New Member

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      yea the thing is im in hawaii and im always surfing so that salt water rusts up my truck pretty well. didnt realize the flowmasters are prone to rusting easily but thats why i have this forum for haha
       
    12. Clusterpup

      Clusterpup Well-Known Member

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      When I buy a new muffler for mine, I'm going with the Dynomax Super Turbo.
       
    13. Pickupman_69

      Pickupman_69 Active Member

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      so 2.25 is the confirmed size inlet and outlets we need? im looking at the dynomax aswell,its cheap and I cant score the amazon deals on flowmaster etc here in canada.
       
    14. Clusterpup

      Clusterpup Well-Known Member

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      There are some demo vids of it on youtube with our engine you can check out if you search.
       
    15. robzila

      robzila New Member

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      Okay so the or pipes are 2.25 if I bbuy just the muffler and nothing else at 2.25 in outlet should I expectmuch as to if I got a 2.50 muffler along with a 2.50 tailpipe installed?

      Be wise if I held out for both or just replaced muffler and still get a decent amount of sound? I don't want to spend a whole lot which is why I'm leaning towards just replacing the muffler. What do you guys think?
       
    16. OffTrac

      OffTrac Elite Explorer

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      Muffler and removing the resonator (free) will have more effect than a muffler and tailpipe. I personally don't think the kind of tailpipe you have on these trucks is going to make much of a noticeable difference.
       
    17. JohnnyO

      JohnnyO Moderator Emeritus

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      You might be able to find a muffler with a 2.25" inlet and 2.5" outlet. Both at 2.25" would be fine though. The factory system is welded into one piece so the muffler shop will have to cut the old one off and tinker with the new one. Patching a new muffler into the old pipes will be more trouble and expense than it's worth, plus you still have the resonator. Least cost way would be to get a 2.25" turbo muffler and have the muffler shop just bend a new tailpipe with no resonator all the way back. If you want 2.5" pipe they can make a reducer for the front of the muffler and do the whole system with 2.5".
       
    18. robzila

      robzila New Member

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      well i decided to go with a dynomax super turbo muffler 17748. ordered on online for $50

      gonna get it hooked up at the shop probably with a new tailpipe which i was quoted $100. ill post my results within a week or two thanks for all the help.
       
    19. Pickupman_69

      Pickupman_69 Active Member

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      my buddy put an aero turbine on his f150 and it sounds amazing,I may go that route if I can find one reasonably priced
       
    20. Curse The Sky

      Curse The Sky Member

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      Sorry to hijack the thread - I'm looking to put a bolt-on exhaust tip on mine just to dress it up a bit. Do you guys think I should get a 2.5" inlet exhaust tip to accommodate for the size of the bolts / clamps inside the tip? When I bought some for my Fusion (also 2.25" tail pipes IIRC), I had to buy different bolts.
       
    21. JohnnyO

      JohnnyO Moderator Emeritus

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      Probably. Not much slack for the bolts to work if you put a 2.25" ID tip on a 2.25" OD pipe.
       
    22. marc0123

      marc0123 New Member

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      Hi i am looking to buy a dynomax ULTRA FLO WELDED muffler.
      Do you guy's think its a good muffler ?
      the sound looks awsome and the price is even nicer.

      If not tell me why and what would you buy ?

      thanks
       
    23. OffTrac

      OffTrac Elite Explorer

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      Don't know about the Ultra Flow but I love my Dynomax Super Turbo. I'd imagine the Ultra Flo would be louder. I've had mine about a year so I can't say much for it's durability, but I'm satisfied with my first Dynomax so far.

      Video on photobucket:
      [​IMG]
       
    24. jusatkins1

      jusatkins1 New Member

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      V8 exhaust

      I was wondering if anybody knew what a direct muffler replacement would sound like. I don't want to have to re-pipe in front of or behind the muffler. Thinking magnaflow but idk what are your opinions
       
    25. Pickupman_69

      Pickupman_69 Active Member

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      im sold on this muffler,what did you need to do to get it on? did a shop do it or just swap the oem out?
       
    26. OffTrac

      OffTrac Elite Explorer

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      A shop did it for $30. It was worth my time and money to just let them do it as I don't have access to a lift anymore and I will never clamp a muffler again, so getting under my truck and welding didn't sound fun. I'll try to get a picture of it tomorrow evening.

      I have to warn you, though, this muffler is pretty quiet at idle. A little deeper at idle, but barely noticeable from the cab. When you get into the throttle, it's obvious it's not stock. You won't mistake it for a FM 40 series, though (which I think sounds like a struggling engine on the 4.0). I'll also try to get video of it at higher revs tomorrow.
       

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