This is certainly not a new topic, but I thought I'd share what I learned on my muffler replacement today.
First of all, I bought this muffler from Amazon:
It came with the necessary gaskets for the flanges, as well as the output clamp
I bought these bolts: (you'll need 2 packages for 4 bolts)
I bought these exhaust hangars:
Now if you've read any of the other muffler install posts, you'll see absolute nonsense re: soaking bolts in PB Blaster or whatever for a week prior to your uninstall.
Screw all that.
What you're going to do is cut the output clamp off with an angle grinder.
And then you're going to cut the two input pipes at the front of the muffler (very close to the flanges) with an angle grinder or a recip saw.
Then you're going to cut the old rubber exhaust hangers with the angle grinder, or an oscillating tool if you're afraid of bigger tools.
Then you're going to hit the backside of the muffler with a BFH a few time until the muffler launches forward and off of the tail pipe.
All of that that will take about 5 minutes if you do it like you mean it.
With this out of the way, you'll have plenty of space to grind the 4 flange bolts off with either your angle grinder or a die grinder if you're fancy like that. Just go after them with a vengeance on the "waste" side of the flange. You can't hurt anything.
And then it's a very simple job of installing the new muffler, which probably doesn't even warrant discussion.... but I will explain is someone asks
First of all, I bought this muffler from Amazon:
Amazon.com: Northeastern Exhaust | Stainless Steel Exhaust Muffler Compatible for Lexus LX470 1998-2007 | Toyota Land Cruiser 1997-2007 4.7L | Free Gaskets and Clamp Included : Automotive
Buy Northeastern Exhaust | Stainless Steel Exhaust Muffler Compatible for Lexus LX470 1998-2007 | Toyota Land Cruiser 1997-2007 4.7L | Free Gaskets and Clamp Included: Mufflers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
a.co
It came with the necessary gaskets for the flanges, as well as the output clamp
I bought these bolts: (you'll need 2 packages for 4 bolts)
Amazon.com: 2PCS Car Exhaust Manifold Bolts,Steel M10x1.5 mm Exhaust Bolts and Nuts Kit with Springs for Exhaust Gasket,Professional Exhaust Flange Bolts Car Accessories for Most Cars : Automotive
Buy 2PCS Car Exhaust Manifold Bolts,Steel M10x1.5 mm Exhaust Bolts and Nuts Kit with Springs for Exhaust Gasket,Professional Exhaust Flange Bolts Car Accessories for Most Cars: Bolt & Spring Kits - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
a.co
I bought these exhaust hangars:
Now if you've read any of the other muffler install posts, you'll see absolute nonsense re: soaking bolts in PB Blaster or whatever for a week prior to your uninstall.
Screw all that.
What you're going to do is cut the output clamp off with an angle grinder.
And then you're going to cut the two input pipes at the front of the muffler (very close to the flanges) with an angle grinder or a recip saw.
Then you're going to cut the old rubber exhaust hangers with the angle grinder, or an oscillating tool if you're afraid of bigger tools.
Then you're going to hit the backside of the muffler with a BFH a few time until the muffler launches forward and off of the tail pipe.
All of that that will take about 5 minutes if you do it like you mean it.
With this out of the way, you'll have plenty of space to grind the 4 flange bolts off with either your angle grinder or a die grinder if you're fancy like that. Just go after them with a vengeance on the "waste" side of the flange. You can't hurt anything.
And then it's a very simple job of installing the new muffler, which probably doesn't even warrant discussion.... but I will explain is someone asks
job.
