Catalytic converter heat shield

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Post by brayer Sun May 08, 2022 10:58 am

Good morning all
I wonder if anyone can help me , I was carrying out a service on my 2018 1.6 petrol vitara yesterday and noticed the cat heat shield moves around a bit on its mountings , the bolts are tight holding it on and it doesn't rattle , the mounting holes have what I would describe as wire mesh inserts in , I was wondering if any one else has noticed this movement or are my fixings worn ? Cars Done approx 33000 miles , maybe it's to allow for expansion or to stop fracturing but seems a lot of movement .
Paul

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Post by Hutchy Sun May 08, 2022 4:55 pm

mine had the same issue, i ended up flattening the edges over of 2 large washers, cutting a couple of slots in the heat shield and fitting the flattened parts of the washers into the slots and fastening them in with the original bolts. will try and post a pic later if i get chance..
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Post by brayer Sun May 08, 2022 6:05 pm

Thanks for that Hutchy , that would be great if you could , did yours start to rattle? Mine seems to be quiet at moment but will get worse for sure

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Post by imack Sun May 08, 2022 7:23 pm

They all move, that's how they're designed.
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Post by brayer Sun May 08, 2022 8:12 pm

Thank you imack, that's good to know,

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Post by Hutchy Mon May 09, 2022 8:16 am

mine rattled a lot you could here it when the car was idling or when you came to a junction or traffic lights, like Imack said they are designed to move but too much movement in my case, i hate rattles if there is a rattle there is a problem
Catalytic converter heat shield  20220510
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Post by Admin Mon May 09, 2022 10:35 am

As above they are designed to have movement for heat expansion and any attempt to solid mount the shield  may create future issues
In the previous SX4/Sedici the heatshield on the M16A was a solid mounted tin plate that is 9/10 times either broken off or has cracks from heat expansion and no movement/flexibility in the fixings

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Post by Hutchy Mon May 09, 2022 12:32 pm

i did this mod around February 2020 because i was sick of the rattle, so it was a case of do what i did or remove the shield of altogether, like the metal bands used on the lower front exhaust pipe heat shields, i have replaced every one of those.first i used those ties that can be used on the heat shield wrap material, but they don,t last long neither so used cv boot clips instead...
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Post by Admin Mon May 09, 2022 12:45 pm

These are what I have been using when the lower heat shield bands corrode...

https://www.ebay.co.uk/itm/390745575594?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=c7jP0oBETPm&sssrc=2349624&ssuid=Eitk58r0Q1W&var=&widget_ver=artemis&media=COPY

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Post by Hutchy Mon May 09, 2022 5:31 pm

i actually have some of those with exhaust wrap, that was for a job but never got used, probably sat in the shed somewhere I must see if I can dig them out sometime
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