[NB] bolting seatbelt stalk to trans tunnel

narita · Postby **narita** » Wed May 20, 2015 10:41 pm

Just looking to grab some advice from the wealth of experience here.

looking to install a fixed back and mount an NA6 seat belt stalk in my trans tunnel.

Question i have is should i use spreader plates on both sides or will it be fine with only 1 under the car?

Any advice is appreciated.

hks_kansei · Postby **hks_kansei** » Thu May 21, 2015 9:46 am

1 side is fine as long as it's large enough and the right material.

go to one of the race equipment shops and you can buy the correct spreader plates, and harness bolts.

They sell them for race harnesses, but they work for normal seatbelts too.

I did this in my car a few years back.

rascal · Postby **rascal** » Thu May 21, 2015 10:11 am

as hks said, one spreader plate on the back is all that's needed.
The point of a spreader plate is to spread the forces over a larger surface area, which effectively strengthens the mount point..
Nothing is pulling outwards on the mount point from underside, so you only need one (under the car) to stop the forces from the belts pulling it through into the car.

Postby **orx626** » Thu May 21, 2015 6:42 pm

These are available.

http://www.ebay.com.au/itm/Harness-Mount-Anchor-Plate-CAMS-Approved-Zinc-Plated-7-16-UNF-/271867518879

Cheers,
Danny

narita · Postby **narita** » Thu May 21, 2015 6:52 pm

Yes perfect! I assume this would a good match for that plate?

Http://www.ebay.com.au/itm/HEX-BOLT-SEA ... 1287198352

Thanks everyone for the advice.

hks_kansei · Postby **hks_kansei** » Thu May 21, 2015 8:30 pm

orx626 wrote:These are available.

http://www.ebay.com.au/itm/Harness-Mount-Anchor-Plate-CAMS-Approved-Zinc-Plated-7-16-UNF-/271867518879

Cheers,
Danny

That's pretty much the same as what I bought, except mine was gold coloured.

I just bought a harness eyebolt with mine from the same shop. (I got mine from GMP Racing in Huntindale)

davekmoore · Postby **davekmoore** » Thu May 21, 2015 8:50 pm

narita wrote:Yes perfect! I assume this would a good match for that plate?

Http://www.ebay.com.au/itm/HEX-BOLT-SEA ... 1287198352

Thanks everyone for the advice.

Now that is a good find. Hope someone will chime in to confirm it's the right thing. It looks right to me.

narita · Postby **narita** » Fri May 22, 2015 2:05 pm

anyone used a bit of sealant under the plate to prevent water?

Postby **orx626** » Fri May 22, 2015 2:09 pm

narita wrote:anyone used a bit of sealant under the plate to prevent water?

hks_kansei · Postby **hks_kansei** » Fri May 22, 2015 2:53 pm

narita wrote:anyone used a bit of sealant under the plate to prevent water?

Nope.

But it's probably a good idea.
Should also help stop the plate rotating as you tighten the bolt from the top.

Postby **orx626** » Fri May 22, 2015 3:05 pm

hks_kansei wrote:
narita wrote:anyone used a bit of sealant under the plate to prevent water?

Nope.

But it's probably a good idea.
Should also help stop the plate rotating as you tighten the bolt from the top.

You should still use at least one pop rivet to retain it.

Cheers,
Danny

Magpie · Postby **Magpie** » Fri May 22, 2015 3:45 pm

and Sikaflex.

hks_kansei · Postby **hks_kansei** » Fri May 22, 2015 4:16 pm

orx626 wrote:
hks_kansei wrote:
narita wrote:anyone used a bit of sealant under the plate to prevent water?

Nope.

But it's probably a good idea.
Should also help stop the plate rotating as you tighten the bolt from the top.

You should still use at least one pop rivet to retain it.

Cheers,
Danny

I always meant to, but never got around to it.

the bolt I used had plenty of extra thread so I just placed a High Tensile Nyloc nut on the excess thread to stop it backing out.