6 replies to this topic

[lowy94]

Hey Guys,
does anyone know the thickness of the washer that has to be underneath the floor for the modded seats to be legal. Who ever had the ute prior to me owning it has taken the washers off and ive been informed a road worthy wont pass without the right size washers.

any help would be appreciated

[redracer]

Hi mate,

What ute is it for?
What seats where fitted at the time?

[Falconxf88]

Just use normal ones, like 3 or 4 if you have too.

Take it for a roady, if the mechanic doesn't like it get him to fix it.
5 minute job.

[journeymanMick]

I'm assuming that the modified seats have resulted in bolts passing through the floor in a place other than originally fitted and that the washer is there to spread the load. I'd be using a big square washer, available at any decent hardware store as a "cyclone washer". They're about 2mm thick and come in 10mm and upward hole diameters. From memory they're about 50mm x 50mm square.

Mick

[lowy94]

Thanks for the help guys, its for a WB ute, its my first car and i want everything to be right so i have no trouble with the toowoomba cops its been fitted with commodore bucket seats

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[czy383]

Hey mate not really an issue with thickness but overall width, as mentioned above you will be best getting a square 'plate' at least 50mmx50mm around 3-4 mm thick if possible, and use grade 8 bolts and that will keep most engineers happy,

If there is any other stuff you want to know give a few of these PDF's a read, lots of info, it is the same guidelines that most mechanics/engineers refer too.
http://www.tmr.qld.g...e.aspx#approved

[Unslanted]

czy383, on 02 March 2011 - 07:14 PM, said:

Hey mate not really an issue with thickness but overall width, as mentioned above you will be best getting a square 'plate' at least 50mmx50mm around 3-4 mm thick if possible, and use grade 8 bolts and that will keep most engineers happy,

If there is any other stuff you want to know give a few of these PDF's a read, lots of info, it is the same guidelines that most mechanics/engineers refer too.
http://www.tmr.qld.g...e.aspx#approved

Not 100% sure on individual seat mounts but the plate required for a seat belt anchorage is 75mm x 50mm x 3mm.
So it would be fair to say 4 of those on a seat would do the job.
The plates can't be thicker than 4mm as that can shear the floor panel rather than deform in an accident.
The corners of all backing plates must have a minimum 5mm radius and the edges adjacent to the body chamfered.
Backing plates must be contoured to match any panel contours.