alexwitham Posted January 10, 2015 Share Posted January 10, 2015 Hi, My 2005 350z has a Scorpion backbox fitted. It appears to be the cause for a metallic knocking/tinny sound from the rear of the car, it's definitely exhaust related. Has anyone else experiences issues with an aftermarket exhaust fouling the rear axle/frame of the car? The rear exhaust tip is only about 1 inch away from fouling, so I'm assuming it's this section that's causing the issue. Thanks, Alex. Quote Link to comment Share on other sites More sharing options...
KyleR Posted January 10, 2015 Share Posted January 10, 2015 Have you had it on ramps to actually have a look? It could be the heat shield off the Y pipe of cats causing the same noise. Quote Link to comment Share on other sites More sharing options...
JonRigby Posted January 10, 2015 Share Posted January 10, 2015 My scorpion back box came out 3/4 rubber hangers last week, all put back in fine but ever since it has been making a ratling noise like you describe, if I wriggle and push the tips around it makes the noise so I think when it was loose its moved something, haven't had a chance yet to have another look. Quote Link to comment Share on other sites More sharing options...
gunny reed Posted January 10, 2015 Share Posted January 10, 2015 My scorpion back box has also started to rattle but only starts to do this after the car has been running for a while, I'm thinking it may be the exhaust baffler that has come loose inside. I'm going to take to garage on Monday . Quote Link to comment Share on other sites More sharing options...
gunny reed Posted January 10, 2015 Share Posted January 10, 2015 Having said that It could also be the heat shield as I did catch the underneath the other day while going over a speed bump at Asda. Quote Link to comment Share on other sites More sharing options...
alexwitham Posted January 10, 2015 Author Share Posted January 10, 2015 @gunny reed - Mine also starts to make the noise I mentioned generally only when the car has warmed up. My cars booked in on the 21st, I'll update once it's been looked at - if you could update this thread too that'd be great! 1 Quote Link to comment Share on other sites More sharing options...
gunny reed Posted January 10, 2015 Share Posted January 10, 2015 Yep will do as soon as I find out ill let ya know, as said going to garage on Monday fingers crossed nothing but a loose heat shield. Quote Link to comment Share on other sites More sharing options...
alexwitham Posted January 28, 2015 Author Share Posted January 28, 2015 Update: Right hand muffler was fouling the axle, heated the brackets and bent it an inch, problem solved. Quote Link to comment Share on other sites More sharing options...
Bodyboarder81 Posted February 3, 2015 Share Posted February 3, 2015 This is quite common with the scorpion .... It needs "tweaking " to fit right . Good sounding though Quote Link to comment Share on other sites More sharing options...
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