exhaust heat shield

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  • s2avant95M
    S2Forum Extremist
    • Mar 2004
    • 1217
    • Home: England Current: United States

    #1

    exhaust heat shield

    i ithink i have traced my vibration/rattling to a heatshield on the exhaust, near the gearbox area (sorry no pics), is it safe to reve it or do i have to replace it with a new one?
    Tim

    1995 S2 Avant, ruby red - ** SOLD TO ROSS **
    Golf Rallye G60 ** SOLD **
    Golf MK2 Oaky with R32 engine
    Audi A6 Avant 1.9 TDi 130
    Golf MK2 8v Race car
  • S2 Ant
    S2Forum Possessed
    • Jul 2003
    • 3682
    • Country: United Kingdom

    #2
    Would this be that stuff thats wrapped around it?
    Ive removed mine as mine was all broken up etc.

    The guys with custom Downpipes have no heat shielding on there so should be fine to remove.

    Be sure that is the problem tho as i thought it was the shielding at first but it got worse and it turned out to be the CATs had totally broken up and were the bits of it rattling around inside itself.

    HTH
    Ant

    2007 Mk5 Golf GTi, 3 door, DSG, REVO Stg 2 and other goodies
    2011 Kawasaki Z1000

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    • s2avant95M
      S2Forum Extremist
      • Mar 2004
      • 1217
      • Home: England Current: United States

      #3
      Originally posted by S2 Ant
      Would this be that stuff thats wrapped around it?
      Ive removed mine as mine was all broken up etc.

      The guys with custom Downpipes have no heat shielding on there so should be fine to remove.

      Be sure that is the problem tho as i thought it was the shielding at first but it got worse and it turned out to be the CATs had totally broken up and were the bits of it rattling around inside itself.

      HTH

      i suppose it could be the cats, im just eliminating possible causes, i guess i could try and wedge something in to stop them rattling and see if it cures it before i start ripping them off!!
      Tim

      1995 S2 Avant, ruby red - ** SOLD TO ROSS **
      Golf Rallye G60 ** SOLD **
      Golf MK2 Oaky with R32 engine
      Audi A6 Avant 1.9 TDi 130
      Golf MK2 8v Race car

      Comment

      • S2 Ant
        S2Forum Possessed
        • Jul 2003
        • 3682
        • Country: United Kingdom

        #4
        No harm in removing the Heatshielding there AFAIK, but just thought i'd let you know.

        Im hoping to fit a new exhaust to mine soon, if i do then i have the De-Cat pipes which are direct replacement for the CATs for sale.
        Ant

        2007 Mk5 Golf GTi, 3 door, DSG, REVO Stg 2 and other goodies
        2011 Kawasaki Z1000

        Comment

        • s2avant95M
          S2Forum Extremist
          • Mar 2004
          • 1217
          • Home: England Current: United States

          #5
          Originally posted by S2 Ant
          No harm in removing the Heatshielding there AFAIK, but just thought i'd let you know.

          Im hoping to fit a new exhaust to mine soon, if i do then i have the De-Cat pipes which are direct replacement for the CATs for sale.
          i guess i should know better, but are the cats expensive to replace? also if i replaced the whole exhaust with, say a miltek, does that include everything?
          Tim

          1995 S2 Avant, ruby red - ** SOLD TO ROSS **
          Golf Rallye G60 ** SOLD **
          Golf MK2 Oaky with R32 engine
          Audi A6 Avant 1.9 TDi 130
          Golf MK2 8v Race car

          Comment

          • S2 Ant
            S2Forum Possessed
            • Jul 2003
            • 3682
            • Country: United Kingdom

            #6
            Miltek Exhaust is CAT back, so would still need them.

            Genuine cost of the CATs is very high, i can give an exact figure this afternoon once im at home.

            The cars do need the CATs to LEGALLY pass an MOT, so if you do remove it would be a good idea to hold on to them, or find someone that might be able to assist it pass an MOT As the emissions creep up too high if they are not fitted.
            Ant

            2007 Mk5 Golf GTi, 3 door, DSG, REVO Stg 2 and other goodies
            2011 Kawasaki Z1000

            Comment

            • s2avant95M
              S2Forum Extremist
              • Mar 2004
              • 1217
              • Home: England Current: United States

              #7
              Originally posted by S2 Ant
              Miltek Exhaust is CAT back, so would still need them.

              Genuine cost of the CATs is very high, i can give an exact figure this afternoon once im at home.

              The cars do need the CATs to LEGALLY pass an MOT, so if you do remove it would be a good idea to hold on to them, or find someone that might be able to assist it pass an MOT As the emissions creep up too high if they are not fitted.

              ok, so if i buy a miltek system i would still have to buy the cat backs?
              Tim

              1995 S2 Avant, ruby red - ** SOLD TO ROSS **
              Golf Rallye G60 ** SOLD **
              Golf MK2 Oaky with R32 engine
              Audi A6 Avant 1.9 TDi 130
              Golf MK2 8v Race car

              Comment

              • S2 Ant
                S2Forum Possessed
                • Jul 2003
                • 3682
                • Country: United Kingdom

                #8
                The miltek system AFAIK is from the CATs back, so the CATs are still there.
                Im looking at getting one of Marco's custom downpipes which will only be a single exhaust not the twin there is on the standard downpipe, then do a single pipe thru the car custom built.

                Might be worth looking in to.
                Have a browse thru this exhaust section for other info
                Ant

                2007 Mk5 Golf GTi, 3 door, DSG, REVO Stg 2 and other goodies
                2011 Kawasaki Z1000

                Comment

                • s2avant
                  S2Forum Fiend
                  • Jul 2003
                  • 2426

                  #9
                  The milltek system fits from behind the cats back so you need to keep the original downpipe and cats. I've got the 3" RS2 system on mine. The centre box section goes down from 3" to two 2.5" (IIRC) pipes that connect to the OE cats.

                  I've got one of Marco's 3" downpipes but haven't decided whether to go for a race cat or a straight pipe yet. I think it will end up being a straight pipe as I'm too lazy and cheapskate to pay for a cat. plus my MOT tester/mechanic is a very understanding fellow S car owner

                  Then it will be 3" from the turbo back. Bring on the flames

                  Ben
                  the best intentions are fraught with disappointment - gil grissom

                  sigpic
                  1994 ABY Avant - it's getting there

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                  • Lee
                    S2Forum Extremist
                    • Jul 2003
                    • 1512
                    • Country: United Kingdom

                    #10
                    3" turbo back, one silencer. That should do the trick....this is what I want with the separate WG pipe to the rear.
                    Other option is twin 2.5" all the way back with maybe 2 motorbike type silencers. You 'could' then have 2 large high flow cats. You still get lower back pressure, high flow and fully MOT compliant. With cats you will only get flames through the WG pipe.

                    I get good flames with either a pop or a loud 'firecracker' sound without the cats on my 3" milltek cat-back system.
                    1995 S2 Avant with some upgrades

                    Designun Limited....
                    Aerospace, Space and Motorsport Design Consultancy and hardware supply.

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                    • audiman
                      S2Forum Freak
                      • Jul 2003
                      • 4827
                      • Country: United Kingdom

                      #11
                      Miltek list a exhausts for S2 Coupe and avant, also RS2. They do a cat back system and also a large bore downpipe and high flow cat too.
                      sigpic
                      Tom C - www.rcmr.co.uk
                      Audi UR Quattro
                      Audi 100 C3 2.0 5 cyl 115ps
                      Audi S2 - 07k engine project aiming for 800ps
                      Audi B5 RS4 645ps 911nm

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