4 point harness fitting

[tiff_lee]

I am planning on fitting 4 point harnesses in my R5 GTT however I am one bolt hole short. I was going to use the original seatbelt mounting points up front but seeing as my 5 never had rear seatbelts fitted the only available chassis hole was where the rear seat bracket was bolted in.

If I got a pair of THESE (http://www.demon-tweeks.co.uk/Motorsport/Harnesses_&_Accessories/Harness_Eye_Bolts_&_Plates/OMP_Weld_In_Eye_Bolt_Plate/1758/0/14416)and had them welded in next to the two existing holes would that be sufficient or could I just drill a hole and bolt with big washers each side (doubtful :confused:)

[olidaviesuk]

That would do the job nicely, although surprised the rear seat-belt mounting holes aren't there, even if not fitted as standard (they're there on mine and thats a really early cup shell, would be really suprised if the same basic shell wasn't used across the range) might be worth having a look at another 5 with them in, may just have been filled in with filler or something, nothing that 5mins work with a drill\scraper and tap would sort out and a lot easier then welding near the fuel tank. :eek:



I am planning on fitting 4 point harnesses in my R5 GTT however I am one bolt hole short. I was going to use the original seatbelt mounting points up front but seeing as my 5 never had rear seatbelts fitted the only available chassis hole was where the rear seat bracket was bolted in.

If I got a pair of THESE (http://www.demon-tweeks.co.uk/Motorsport/Harnesses_&_Accessories/Harness_Eye_Bolts_&_Plates/OMP_Weld_In_Eye_Bolt_Plate/1758/0/14416)and had them welded in next to the two existing holes would that be sufficient or could I just drill a hole and bolt with big washers each side (doubtful :confused:)

[tiff_lee]

The car was 1st registered in '86, I did have a good look but the only obvious holes are where the brackets were buy i'll take a closer look.

If it does come to welding i'll drop the fuel tank down I think.

[car.crash]

its not a good idea to mount the back of the harnesses on the floor behind you. you want to get a harness bar fitted and loop them on that.

[tiff_lee]

harness bar? that similar to a boot brace?

[car.crash]

http://www.google.co.uk/images?hl=en&rlz=1T4ADFA_enGB378GB378&q=harness%20bar&um=1&ie=UTF-8&source=og&sa=N&tab=wi&biw=1345&bih=555
or mount them to your cage if you have a straight bar going across.

http://www.keithrussell.net/harness_achor%20points.gif

[car.crash]

http://www.sparcousa.com/resourceFiles/16.pdf

that should help you out :)

[tiff_lee]

Thanks for the links and that Mark, do you have a harness bar fitted in yours?

I wasn't going to mount directly behind the seats so the straps pull down it was going to be where the rear seat mount points were which in that pic seem acceptable D+E ?

[car.crash]

i fitted a bar directly behind my seats across my cage and the belts loop over that, ignore all the slack belt and it had just been fitted.
i suppose you could mount to the rear fixing but its a long way for the belt to run incase of any stretch in a accident. i suppose its a case of how safe do you feel with it?
http://i110.photobucket.com/albums/n105/marcsmith1481984/my%20car/62d6f3fe.jpg

[SCHWARTZ]

what about using a rivnut tool or is that not up to safety/mot standards

[tiff_lee]

I see what you mean Mark if there was a shunt on the rear the belts would go slack etc hhmm

This pic is of the area behind my front seats
http://i148.photobucket.com/albums/s4/tiff_lee_photos/P8240194.jpg

I circled the only fixing hole of the right which was for the rear seat brackets, the circle on the left was where I was thinking of welding one of those mounting plates but i'll maybe have to reconsider then

[car.crash]

Why not connect both straps to the same hole? It will be plenty strong enough. When I had 3 point harnesses I mounted mine there but they only have 1 strap instead of 2, not that it makes any differance.

[tiff_lee]

I wasn't sure if it would cause only problems putting both straps to the same point

[SCHWARTZ]

i have 4 points and have both straps of either seat going to one hole so 2 holes in total and that has been fine;)

[tiff_lee]

Ah cool cheers for input guys, i'll start of trying that then and can always upgrade to harness bar later.