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David Boyle
Tinkerer
NSW
Soarer GT limited

Posts: 32
Reg: 05-2009

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 Saturday, November 14, 2009 - 06:27 pm, by:  David Boyle (Amokzar) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
An unusual rattle noise is coming from under my car under light acceleration. It sounds a lot like a loose washer moving on a bolt. Any hints as to what it might be would greatly be appreciated thanks guys
Jol Alexander
DieHard
Vic
UZZ31 V8 (no mods)

Posts: 565
Reg: 07-2009

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 Saturday, November 14, 2009 - 08:13 pm, by:  Jol Alexander (Courage) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Its a bit of cat in your exhaust.

Unbolt exhaust from Cat
Tap out.

Please be safe when raising your car!
Jol Alexander
DieHard
Vic
UZZ31 V8 (no mods)

Posts: 567
Reg: 07-2009

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 Saturday, November 14, 2009 - 08:21 pm, by:  Jol Alexander (Courage) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Actually it could be a few things, obviously check the bolting and make sure everything is secure.
David Boyle
Tinkerer
NSW
Soarer GT limited

Posts: 33
Reg: 05-2009

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 Sunday, November 15, 2009 - 01:22 am, by:  David Boyle (Amokzar) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
yeah i am thinking your right with that one Jol, sounds like it is coming from the cat thanks heaps man (i have checked the exhaust it seems attached well with no holes)
Jol Alexander
DieHard
Vic
UZZ31 V8 (no mods)

Posts: 569
Reg: 07-2009

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 Sunday, November 15, 2009 - 11:46 am, by:  Jol Alexander (Courage) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Well my advice.. I am 5'11 and weigh 65 .. i didn't have the strength to turn the nuts to the cat. So i got my 6'4 100 Kilo plus brother to do it. These bolts will have fine rust on them so spray them down with WD40.

Raise the front of the car one side at a time, make sure it is uber secure cos these bolt are hard to get off

Or pay an exhaust place $50 to do it :-)
Robert Pressnell
Tinkerer
Victoria
V8

Posts: 45
Reg: 11-2008

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 Sunday, November 15, 2009 - 12:39 pm, by:  Robert Pressnell (Bob_pressnell) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Well i have the same problem it's proberly a broken ring clamp on your exhaust as the exhuast have covers on them they are bolted on but in acouple of places they have ring clamps and the one up the front is the one that useally brake.Mine did and was rattling and the cover would hang down and scrap on the road when doing 80k's plus.So i put another clamp on it but that broke to so i took off my whole exhuast cover.I RECKON THAT THIS IS YOUR PROBLEM.
David Boyle
Tinkerer
NSW
Soarer GT limited

Posts: 34
Reg: 05-2009

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 Sunday, November 15, 2009 - 03:34 pm, by:  David Boyle (Amokzar) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
i've had a look under the car the clamps are fine and nothing is being dragged, i have it booked in to have the cat taken off and shaken... i have had a good look at all the clamps and made sure everything was secure but thanks for the advice Robert :-)
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 11089
Reg: 11-2004

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 Sunday, November 15, 2009 - 10:06 pm, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
It could be that the heatshield on the cat has come loose - happened to my UZZ30.
David Boyle
Tinkerer
NSW
Soarer GT limited

Posts: 35
Reg: 05-2009

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 Sunday, November 15, 2009 - 11:41 pm, by:  David Boyle (Amokzar) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
my initial first thought was that too Peter, i have crawled under it and could not find anything loose. i have it booked in for Friday to get sorted as even if i did find the problem i don't really have the tools or the strength behind me to fix it as Jol mentioned the bolts are a bit rusted and me being 5"10 and about 67kg (none of which is muscle) i will keep you guys updated as of then. thanks for the input guys
David Boyle
Tinkerer
NSW
Soarer GT limited

Posts: 37
Reg: 05-2009

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 Sunday, November 22, 2009 - 10:37 pm, by:  David Boyle (Amokzar) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
guys just an update, got my car back from the mechanic there was rocks in my exhaust pipe and the rattle noise is definitely coming from the middle muffler. i'll let it rattle until i have enough for extractors and a catback exhaust system
Barry Precious
Tinkerer
Moza
4.0GT V8

Posts: 64
Reg: 07-2007

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 Monday, November 23, 2009 - 04:23 pm, by:  Barry Precious (Barryp) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Just curious David - how could you get stones in your exhaust - especially as far up as the middle muffler?
David Boyle
Tinkerer
NSW
Soarer GT limited

Posts: 38
Reg: 05-2009

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 Monday, November 23, 2009 - 05:39 pm, by:  David Boyle (Amokzar) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
council have done a really really horrible roadworks job about 4 months ago on the only road out of my place... there is still a large amount of stones on the road, how exactly they got right the way in there is a mystery to me too... knowing my luck drunk people would have piled them in there as i park on the street
Jol Alexander
DieHard
Vic
UZZ31 V8 (no mods)

Posts: 593
Reg: 07-2009

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 Monday, November 23, 2009 - 05:39 pm, by:  Jol Alexander (Courage) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Barry, I don't think you can.. end muffler would block them as far as I am aware... sounds awfully sus to me. Still recon it's cat bits if anything. Also .. WTF didn't the mech take them out? It's all Bolt on stuff
David Boyle
Tinkerer
NSW
Soarer GT limited

Posts: 39
Reg: 05-2009

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 Tuesday, November 24, 2009 - 07:15 am, by:  David Boyle (Amokzar) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
yeah the mechanic just said (in his words) "even if i did take the middle muffler off, its not a hollow unit so the chances of me getting whatever is rattling around in there out is next to none"
Jamie Richards
Tinkerer
St.john's
v8

Posts: 73
Reg: 06-2009

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 Tuesday, November 24, 2009 - 10:56 am, by:  Jamie Richards (Nwb40gt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
David Boyle wrote on Tuesday, November 24, 2009 - 07:15 am:

yeah the mechanic just said (in his words) "even if i did take the middle muffler off, its not a hollow unit so the chances of me getting whatever is rattling around in there out is next to none"


WHAT???
David Boyle
Tinkerer
NSW
Soarer GT limited

Posts: 40
Reg: 05-2009

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 Tuesday, November 24, 2009 - 12:44 pm, by:  David Boyle (Amokzar) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
his words, not mine... but hey its an excuse for me to get extractors and a better exhaust setup.
David Boyle
Tinkerer
NSW
Soarer GT limited

Posts: 59
Reg: 05-2009

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 Tuesday, June 01, 2010 - 11:54 pm, by:  David Boyle (Amokzar) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
An update (yes aware its an old thread) Jol was right, had the cat completely die on me now, rattling like nothing else. ohh and Jamie i no longer use that mechanic anymore as they have become useless (i HATE to say that about anyone) but they had charged me for machining the disc's and didn't actually do it
Ben Kelly
DieHard
Lakemba
v8

Posts: 794
Reg: 08-2005

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 Wednesday, June 16, 2010 - 08:41 pm, by:  Ben Kelly (Ace) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
good on you for updating David. care to name and shame? also how much did new cats cost or was it a centre cat? i got quoted $300x2 to replace the factory cats
David Boyle
Tinkerer
NSW
Soarer GT limited

Posts: 63
Reg: 05-2009

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 Wednesday, June 16, 2010 - 09:32 pm, by:  David Boyle (Amokzar) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
central coast mechanics, in kincumber, as for the cats, i paid $280 each cat and $100 each cat to install. these were high flowing cats. but there was a fair bit of work to be done as the previous owner of my car had butchered my exhaust, the old cats didnt mount up properly and so on

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