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Underfloor Cat Poor Ground clearance
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darthvalkyr

Posted: Tue May 31, 2016 4:57 am

Joined: Sep 03, 2015
Posts: 19
Trade Rating: 0

I have a Peugeot 206 LX 1.4 Petrol with the underfloor cat.

Trying to get some more ground clearance on my exhaust as despite my car being stock the exhaust keeps catching on speed bumps, even when driving very slowly. For some unknown reason, the underfloor catalytic converter has a bend in the pipe that come out of the back. this is either causing the front to have clearance issues (3 inches before vehicle is loaded), or the rear of the cat and the exhaust pipe having the same clearance if the cat is flipped 180 degrees. If it was a straight pipe there wouldn't be an issue.

The cat itself is a rectangular shaped tin with a flat top and bottom. Does anybody else on here have the same cat? Just wondering how it is mounted, as I am considering turning it sideways when the weather permits to try and resolve my issue, but don't want to waste any more time if it won't make a difference. My concern in turning it sideways is that it is wider when turned sideways so this may cause yet another clearance issue. Cat pictured below:

Sim

Posted: Tue May 31, 2016 9:53 pm

Joined: Jun 20, 2012
Posts: 1171
Trade Rating: +1
Location: West Country

Could you take a picture of how it looks?


	2.0 HDi, year 2000 (E's restin') Red GTi 180, year 2004 (VorTechS' sEXy Beast (being) remasteRed) Blue GTi 180, year 2004 (in hibernation after endless driving fun in 2019, queued for "cambelt in tight spaces") Missus' 1.6 16v CC, year 2007 (L-plates to P-plates to NO-plates, but now she wants powwer:)) £50 1.4 HDi, year 2002 (seatless transporter, SORNed, rust needs patching) EV Jag S(crapped)- & X-Type GTC VXR (sold)

darthvalkyr

Posted: Wed Jun 01, 2016 10:06 am

Joined: Sep 03, 2015
Posts: 19
Trade Rating: 0

That was before I flipped it. See the bent bolt on the front clamp where it bottomed out? Flipping the cat just pushed the same clearance issue further back.

I have invested in a new pipe that runs from the cat to the back box, along with new hangers and clamps. Hopefully some fresh rubbers should lift the system back into place. The new pipe seems a little shorter end to end, and has more of an angle on the flange that clamps to the back box, resulting in an upwards angle at the cat end once the back box is level. This should hopefully match up with the angle on the cat pipe and lift the cat well clear. Just waiting for the weather to dry out and I'll have a go at it.

Sim

Posted: Wed Jun 01, 2016 11:30 am

Joined: Jun 20, 2012
Posts: 1171
Trade Rating: +1
Location: West Country

So lifting the backbox pipe up as much as it goes should hopefully sort you out. There is a rubber hanger in the mid-section of the system, the other two hung the backbox. Your bets are on the former, there is always a degree of freedom when you fiddle with those, just beware of the tip itself catching too high on a bumper


	2.0 HDi, year 2000 (E's restin') Red GTi 180, year 2004 (VorTechS' sEXy Beast (being) remasteRed) Blue GTi 180, year 2004 (in hibernation after endless driving fun in 2019, queued for "cambelt in tight spaces") Missus' 1.6 16v CC, year 2007 (L-plates to P-plates to NO-plates, but now she wants powwer:)) £50 1.4 HDi, year 2002 (seatless transporter, SORNed, rust needs patching) EV Jag S(crapped)- & X-Type GTC VXR (sold)

darthvalkyr

Posted: Thu Jun 02, 2016 10:14 am

Joined: Sep 03, 2015
Posts: 19
Trade Rating: 0

Middle rubber doesn't match the other two which seems off. The diagrams I've seen show 3 the same. I'll be sure to watch the clearance on the rear bumper. Thanks for the tip. Gone with the parts shown here. Clamps, hangers and the long pipe from cat to back box. Exhaust Diagram Looks like it might stay dry enough outside to have a crack at it today.

Sim

Posted: Thu Jun 02, 2016 10:15 am

Joined: Jun 20, 2012
Posts: 1171
Trade Rating: +1
Location: West Country

I'm curious now Could you please unbreak the link to diagram?


	2.0 HDi, year 2000 (E's restin') Red GTi 180, year 2004 (VorTechS' sEXy Beast (being) remasteRed) Blue GTi 180, year 2004 (in hibernation after endless driving fun in 2019, queued for "cambelt in tight spaces") Missus' 1.6 16v CC, year 2007 (L-plates to P-plates to NO-plates, but now she wants powwer:)) £50 1.4 HDi, year 2002 (seatless transporter, SORNed, rust needs patching) EV Jag S(crapped)- & X-Type GTC VXR (sold)

darthvalkyr

Posted: Thu Jun 02, 2016 4:31 pm

Joined: Sep 03, 2015
Posts: 19
Trade Rating: 0

Looks like much better clearance now:

Changed the hangers and reclamped everything. Looks like the cat pipe was a little short not a lot of pipe to make the joint between the cat and the back pipe, and can't pull the back box any further in due to clearance with the rear anti roll bar and the pipe. Put a bit of stretch in the new rubbers to help with this. A generous helping of firegum and a clamp will hopefully prevent the joint leaking as the clamp alone didn't cut it. Failing that I'm tempted to use a bandage then clamp the join. Enough pipe to clamp, but not the best seal.

Here's another diagram:

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