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  #1  
Old 12-02-2018, 12:04 AM
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Muffler swap help

I am halfway through this job and could use some tips.

I found some 4.6is mufflers locally for a song. I am swapping them onto my 2003 3.0l. I was able to get the old ones off, and have the new left one on, but it's become apparent that this job is impossible without a lift. I can't get the car high enough to poke the new muffler tips through the bumper, since they need to be at a pretty good angle to get in.

I tried taking the rear bumper off, but my T50 torx (supposed to be the right size) spins in the bolt.

Any advice? I'm about to drive it to a mechanic just to have them use their lift.
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Old 12-02-2018, 08:10 AM
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I did my muffler swap with a set of ramps. They got the ass-end up high enough (barely), but they made it in. Are you just using jack stands?
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Old 12-02-2018, 11:27 AM
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I've also used a narrow ditch (68 Mustang GT) for FMX transmission installation.

Of course the people who lived across the street pretty much never gave me a Christmas present after that...

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Old 12-02-2018, 11:43 AM
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Yep. I have a nice floor jack that gets it pretty high, so maybe I'll try cutting some scrap lumber up to help me raise the car even higher. if you were able to do it with ramps, then that's encouraging!
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Old 12-02-2018, 01:04 PM
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Post up some pics when you get it done. Always liked the quad tips.
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Old 12-02-2018, 01:17 PM
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I did this swap on my 3.0 5mt. Good upgrade in looks, no real difference in sound. I have a lift and did it without removing the bumper, but sliding the bumper back an inch or two is easy. I think those torx bolts are t55. And don't forget the two small books in the fenderwell.
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Old 12-02-2018, 02:32 PM
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Ok, that makes sense. The guide I found on Pelican, I think, said T50 but my T50 spun in the bolt head. And I don't have anything bigger.

Thanks all for the tips!

Btw, it's actually the big oval tips, not the quads. The quads are from the 4.4s. And as far as I can tell, the mufflers are perfectly identical (externally at least) but the piping is probably 1/4" or maybe 10mm larger diameter.
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Old 12-02-2018, 02:44 PM
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Old 12-02-2018, 08:09 PM
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Thanks for the tip, e39_touring! All I had to do was go buy a T55 and slide it back an inch. That's all it took. I'll post a picture if I can figure out how.
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Old 12-03-2018, 07:35 PM
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Can't figure out how to resize a picture. The biggest resolution allowed is 1400x1400 and my phone can't take pictures that small, or resize. Oh well. It looks like a 4.6is.

It does not, however, sound like a 4.6is. It sounds exactly the same as far as I can tell. Maybe a teeny bit louder at higher rpms.

I'm glad to find that my 105k-mile exhaust gasket donuts did not leak. So I am glad I didn't waste money on new ones.
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