Do magnaflow kits need to be welded?

**CivilEGR** · 09-06-2008, 05:29 PM

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** · 09-06-2008, 05:34 PM

Mines not welded.

**$ilverado8405** · 09-06-2008, 05:39 PM

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** · 09-06-2008, 06:02 PM

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** · 09-06-2008, 06:22 PM

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

**BigDiesel667** · 09-06-2008, 06:24 PM

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** · 09-06-2008, 08:39 PM

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.