A fer weeks back we went to a MR Muffler to get a 2inch system installed right through the car. At this stage there was no interiour in the car and the guy installing it was having a look. Anyway this guy also can do roadworthys and saw the holes that had previously been cut for the 6x9 speakers on the parcel shelf.
He thought that they might effect the stuctual stability of the frame or sumthing. But i do know everyone has speakers up there these days. Has anyone had any problem getting a roadworthy because of this. Also because its been unregistered for so long we need to get an engineer to look over it, would he pick us up on it?
Matt
6x9 holes in parcel shelf
Started by
_Toranaman24_
, Feb 01 2007 02:21 PM
20 replies to this topic
#2
_Flamenco_
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Posted 01 February 2007 - 02:45 PM
It does affect the roadworthy because it's part of the subframe - an engineer would definately pick up on it! If you are just getting it regoed, pull off the board off the top of the shelf and replace with a secondhand or new one without the speaker holes... You can weld in a new section later on.
#3
LXCHEV
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Posted 01 February 2007 - 03:16 PM
Yep, it's definitely something that certain engineers / rwc testers pick on... your best bet is definitely to cover it up and act dumb. Fit a nice parcel shelf - with or without speakers, and trim it up nicely in carpet or velour or whatever - make it all look nice and neat, so that it just blends in and doesn't draw attention.
#4
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Posted 01 February 2007 - 03:42 PM
Even better, whack an LPG tank in underneath so even if they think to look in there, they can't get their head up that far 
#5
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Posted 01 February 2007 - 04:03 PM
They'd check the tank is in date though!
#6
_tweetytorana_
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Posted 01 February 2007 - 04:42 PM
The auto elec told me I'd have the Torana knocked on the 6x9 speakers up the back (professionally fitted and neatly trimmed), then told me the same for my Lancer when I go to sell it (also pro fit & trim), cos his son got knocked back on it. I wonder if female in 30s with 10 yr old kid gets treated differently than say P plate male...? Never got a second glance for the RW this time or in 1993 when I first purchased it.
#7
_1uzbt1_
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Posted 01 February 2007 - 06:43 PM
when i last took one of my cars to the pits this was one of the very first things they checked.
I also have a vehicle that has a conversion engine in it which will also need to go over the pits,it has to big 6x9 holes in the rear shelf.So i spoke to my engineer and he said to put some patio tube under the parcel shelf and pop rivot it in.How simple,goes on the engineers certificate and legal.
I also have a vehicle that has a conversion engine in it which will also need to go over the pits,it has to big 6x9 holes in the rear shelf.So i spoke to my engineer and he said to put some patio tube under the parcel shelf and pop rivot it in.How simple,goes on the engineers certificate and legal.
#8
_Aquarius - LC_
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Posted 01 February 2007 - 07:03 PM
G'day 1uztbt1,
Out of interest,could you explain further about this patio tube.What is it?I'm trying to imagine how it would look! If it is enough to sayisfy the engineer,this may come in handy one day. Thanks in advance
Out of interest,could you explain further about this patio tube.What is it?I'm trying to imagine how it would look! If it is enough to sayisfy the engineer,this may come in handy one day. Thanks in advance
#9
_1uzbt1_
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Posted 01 February 2007 - 07:54 PM
Patio tube is just thin walled rectangal steel tube,used as up right for patios.Its just 1.6mm thin steel roughly the same thickness as your vehicles sheet metal.
All i had to do was cut a length(ended up being about 1300mm long)and pop rivot it across the width of the car just under the parcel shelf.It just adds stregth where the metal has been cut out.Engineers may require different things though.
All i had to do was cut a length(ended up being about 1300mm long)and pop rivot it across the width of the car just under the parcel shelf.It just adds stregth where the metal has been cut out.Engineers may require different things though.
#10
TerrA LX
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Posted 01 February 2007 - 08:02 PM
i think torrys are closer to 0.8mm with alot of new cars dropping down to 0.6mm to save weight.Patio tube is just thin walled rectangal steel tube,used as up right for patios.Its just 1.6mm thin steel roughly the same thickness as your vehicles sheet metal.
All i had to do was cut a length(ended up being about 1300mm long)and pop rivot it across the width of the car just under the parcel shelf.It just adds stregth where the metal has been cut out.Engineers may require different things though.
cant see a tube adding strength if it aint welded/bolted to anything.
as you said, an engineer will see to that.
#11
_Aquarius - LC_
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Posted 01 February 2007 - 08:11 PM
^^^Ah cool, thanks for reply,I also have extra speaker holes in the parcel shelf,my car sailed straight through a RWC 6 yrs ago with the speakers in place, but it sounds like i may have been lucky, with choice of inspector that day!
#12
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Posted 01 February 2007 - 08:48 PM
im glad i have a hatch and dont have to worry about it!
#13
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Posted 02 February 2007 - 12:57 PM
1.6 was the closest easily available steel close to factory metal,and when you think about you wouldnt realy need that much reinforcing from a little metal cut out for speakers.
#14
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Posted 02 February 2007 - 01:05 PM
Depends on if it will be driven daily or taken out on the track or drags... Then it becomes an issue! I agree with ALX76 about the patio tube, a couple of rivets wouldn't make much of a difference to the strength, it would just be like sticky tape or silicone!
#15
_73LJWhiteSL_
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Posted 02 February 2007 - 01:11 PM
I heard a story a while ago of someone with a commodore who had cut out the speaker holes (bigger) in the back shelf. He was defected and had to have a new parcel shelf weilded in.
I reckon either don't put speaker in the parcel shelf or 'pack' the speakers up enough that you don't need to cut holes.
Steve
I reckon either don't put speaker in the parcel shelf or 'pack' the speakers up enough that you don't need to cut holes.
Steve
#16
makka
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Posted 02 February 2007 - 01:56 PM
my parcel shelf is still a virgin! hasnt even had the holes punched out!
I will give you a tip on how to get away with a cut parcel shelf, there are 2 ways to do it:
1: get a dodgy roadworthy
2: make up a parcel shepf out of MDF with no speakers in it then carpet the inside of the boot, covering over where the speaker holes are.
and dont take it back to MR muffler to get a roady
whats this about your car being off the road for so long you need an engineer to look at it? never heard of this before
I will give you a tip on how to get away with a cut parcel shelf, there are 2 ways to do it:
1: get a dodgy roadworthy
2: make up a parcel shepf out of MDF with no speakers in it then carpet the inside of the boot, covering over where the speaker holes are.
and dont take it back to MR muffler to get a roady
whats this about your car being off the road for so long you need an engineer to look at it? never heard of this before
#17
_1uzbt1_
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Posted 02 February 2007 - 02:30 PM
exactly just like cutting the speaker holes in it wont make much differance.Im happy,my engineer is happy with the mod as he suggested it so i aint arquing with him.Depends on if it will be driven daily or taken out on the track or drags... Then it becomes an issue! I agree with ALX76 about the patio tube, a couple of rivets wouldn't make much of a difference to the strength, it would just be like sticky tape or silicone!
#18
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Posted 02 February 2007 - 03:22 PM
Makka we got told by the guy we bought it off that if it was going to become a daily drive that we need an engineer to look over???
And its all ready too late to not cut the holes because they were cut when we bought it.
The speakers are already in now too so im thinking i might make up a "fake" tray to put in while we get in on the road and then just sway it over. I will be putting a sub and amp in the boot as well as the battery so at the same time it might help to put some board around and try to hide the bottom of the speakers when there in.
Thanks for all the replys too
Matt
And its all ready too late to not cut the holes because they were cut when we bought it.
The speakers are already in now too so im thinking i might make up a "fake" tray to put in while we get in on the road and then just sway it over. I will be putting a sub and amp in the boot as well as the battery so at the same time it might help to put some board around and try to hide the bottom of the speakers when there in.
Thanks for all the replys too
Matt
#19
makka
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Posted 02 February 2007 - 08:24 PM
thats bullshit, $10 says his mate is the local engineer.Makka we got told by the guy we bought it off that if it was going to become a daily drive that we need an engineer to look over???
And its all ready too late to not cut the holes because they were cut when we bought it.
about what I said, just cut out a piece of thin MDF to cover the whole parcelshelf and carpet the inside of the boot/parcelshelf and you will be fine
#20
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Posted 03 February 2007 - 06:10 PM
In ACT it doesn't matter if you have 6x9 speakers installed as long as you haven't affected the child anchorage mounting points. It sounds over zealous to me...
#21
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Posted 03 February 2007 - 06:23 PM
i think it's more of a blanket affect so that one can't say "well he's got em why can't i". as you could understand the effect in a major collision what could happen if the child restraint anchor in use has been compromised.
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