Do magnaflow kits need to be welded?

[CivilEGR]

I see them advertised on some sites as being bolt on, but when I check out the magnaflow installation sheet from their website, it states they should be welded? The kit I'm looking at comes with the C-clamps, and doesn't mention in the steps to weld, but right at the top of the sheet it says that welding is required? What's the deal? Can I run it with just the clamps for a few days without it falling off until I can get a chance to borrow a welder next week? Or does it need welding at all? Or should I not drive it at all without welding it?


Thanks in advance.

[BigDiesel667]

Mines not welded. :dunno:

[$ilverado8405]

Use the clamps to put it together. They recommend welding but it's not needed. Just tighten the clamps down to 75ft-lbs and it'll never go anywhere.

[00shortbox]

My Magnaflow kit came with the band style clamps, I just tightened them with my snap-on 3/8" drive impact until they stopped turning. I just checked all the clamps last night with a wrench and couldn't budge them.

[CivilEGR]

Looks like I'll be running clamps alone then. Thanks everyone.

[BigDiesel667]

IMO it's better to use the clamps incase you ever want to run a different muffler or pipe so you don't have to cut it out.

[CivilEGR]

:argue:



Well magnaflow was kind enough to send me a 3 1/2" clamp instead of the required 4" clamp. Looks like this project won't be getting finished tonight. I'll pick up a 4" clamp tomorrow (hopefully) and give magnaflow a call on Monday.