kniff_666 Posted March 30, 2012 Share Posted March 30, 2012 Hello all, Just so that you know. I am typing this when i am annoyed so please excuse any bad spelling etc. I have a rattle that occurs at approx 1750rpm (only when accel) and it is coming from the exhaust or the heat shields around the exhaust. Now i have checked all the connections and all the heat shields and they all appear to be securely fixed and yet the noise persists! I have a 94 SZ-R 5 speed manual. Only the back box is different from stock. I know that this is a resonance issue and it sounds terrible when going thru 1750 rpm. Its embarrassing! Please help me out. I know its a relatively common issue and was hoping someone could tell me which part exactly is causing it. At the moment i feel like ripping all the heat shields out and wrapping the whole thing. (but i have no heat wrap at the moment or ties). cheers, Link to comment Share on other sites More sharing options...
Bossco Posted March 30, 2012 Share Posted March 30, 2012 Just pull the whole lot off! I cut mine of 5 years ago and have never had any problems. My exhaust isnt wraped either. Link to comment Share on other sites More sharing options...
kniff_666 Posted March 30, 2012 Author Share Posted March 30, 2012 really! Toyota put them on it for a reason surely. I am not keen on removing all the heat shields. I was hoping to narrow it down to one particular heat shield and tighten it up or add some form of sound dampening / insulation. i will have to enlist the aid of my helper to rev it while i am inspecting it. (must remember to wear ear defenders) Link to comment Share on other sites More sharing options...
merckx Posted March 30, 2012 Share Posted March 30, 2012 The standard heat shields aren't always of any use with an aftermarket exhaust which most of us have. I would just get underneath and check all of the heat shields. Link to comment Share on other sites More sharing options...
ripped_fear Posted March 30, 2012 Share Posted March 30, 2012 Had the same problem on mine, but mine was slightly corroded on the second cat sheild, just a small spot weld and no more noise. Link to comment Share on other sites More sharing options...
Colin-mkiv Posted March 30, 2012 Share Posted March 30, 2012 Mine have all been ripped off....and my car hasn't burst into flames, yet. Link to comment Share on other sites More sharing options...
kniff_666 Posted April 2, 2012 Author Share Posted April 2, 2012 YET!? Atleast your not driving around in Ferrari 458. your almost certain to go up in smoke in one of them. "lets put flammable glue on the rear wheel arches that are near the really hot exhaust ... what could possibly go wrong?" Link to comment Share on other sites More sharing options...
kniff_666 Posted April 27, 2012 Author Share Posted April 27, 2012 Ok guys a quick update. Managed to fix the rattle without removing all the heat shield. Found that the first heat shield after the first CAT had broken near the fixing point. Ripped it off (being careful to leave the sensor wire harness still attached) and roberts your fathers brother. Back to sounding sweet as a nut! Link to comment Share on other sites More sharing options...
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