Sigma exhaust re packing

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Dave connors
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Sigma exhaust re packing

I've just stripped down my exhaust from an ex sigmax racer but not sure if the perforated tube should be attached to the end piece or not or is it held central by the filling 

Jonathan Kay
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Dave connors
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It's not quite the same exhaust mine looks like a standard exhaust that's been made re packable as the ends fit over the middle can I could make it work if I sleeve the ends of the perforated tube

Dave connors
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Which acousta-fil is the best to use the S2 goes up  to 850 degrees

paul_w
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based on my experience 1) it is worth sleeving the perforated tube, as I didn't do it and I think it would better support the end cap joint if there was a short sleeve locating it rather than it simply butting up to the end cap and 2) if like me you get stainless rivets then you need a serious pop riveter not the usual type of hand held one as it won't be up to the task even in the unlikely event that you have hands like Geoff Capes...

7 wonders of th...
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....or use rivnuts and button heads to make it easier next time

andy_harries
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This thread is timely for me as I caught the end of my exhaust on a curb at donington yesterday and all the packing came out (sorry for the red flag if you were there). Which filing do you choose?

Midlife crisis begun....

SM25T
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That sounds drastic .... can't picture how that happens unless the end cap comes off. Acoustafil mat is nice to use.
andy_harries
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Yes, end cap came off when i caught it on the extra large curb bits on the final chicane, which meant it all flew out on the start/ finish straight!

Midlife crisis begun....

SM25T
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Ouch
Dave connors
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#7 I went with the acouta fil PTX the 2 meter length is plenty for the 6 inch silencer