I was thinking of installing a racing harness. Anyone know where i can mount it with the stock seats? I was thinking of a 4x3 point one and cutting a small hole in the mesh in the seat. Does anyone have any pics of a harness install? Any suggestions? thanx.

 

You're up til 2am thinking bout your car too eh?

 

Good question.

However, your belts will have to come over the sides of the seat, not through the mesh hole. This is too high and won't spread wide enough to go over your shoulders.

Your concern should also be where the harneses will bolt to....as the drivers seat belt latch itself (on the right side of the seat) is mounted to the seat, you'll need to drill a mounting hole for an eyebolt. I don't think that SCCA will let you use that mount point - you'll need a dedicated mount hole for that side.

You might also need to remove the rear access panel to bolt the rear belts.....not sure how this will work though. The regs require that the rear (shoulder) belt downward travel not exceed a certain degree measurement to the mount points otherwise you will break your neck in an accident (I think it is 40 degrees).

You might need a dedicated roll cage.

Hope this helps!

 

We installed a 4-pt harness... we have since removed the shoulder belts due to the SCCA rule about open-top cars. They only allow harnesses if you have a roll-bar or cage that extends at least 3" above the driver's helmet. It makes sense, because if you fip with harnesses the top of your dome will take a beating.

I did drive once on the street before we pulled out the should belts and it felt great. But it's not worth the extra weight of a roll-bar for us.

Here are pics of the original install, with instructions. Use at your dome's own risk!

http://www.s2000online.com/forums/showthre...p?threadid=6563

 

I looked into this about a year ago and came to the following conclusions (above and beyond what was already stated in the other thread relative to SCCA rules etc):

1) the plastic covers on the roll hoop are not a good mounting point - they are crushable because the metal bar inside the plastic casing is much smaller diameter - about 1.25" or so.

2) mounted to the roll hoop, the shoulder belts have some leeway to slide up the hoop - even if you mounted to the raw bar without the plastic covering. Ideally, you should have some sub loop that will keep the belt from sliding up.

3) depending on how far back you normally slide your seat, fixing the lap belt mounts to the rear bolt for the seat rail may make the lap belt too high up your abdomen instead of low and tight - if the belt is too high, there is a major internal injury risk - even if not in a high speed crash. Ideally, you want to use the lower stock mounting points for the stock belts so that the belt is positioned relative to the seat rather than relative to the car.

4) It is possible to fabricate a bar that connects the left and right shoulder belt pivot buckle mount points that you can use as a harness bar. This is probably still not legal or secure enough for SCCA but good enough to keep the belt fixed in place. For added rigidity, vertical bars can connect from the horizontal harness bar to the seat rail mount points. Take a look at the Dali Racing harness bar for the NSX.

5) As others have pointed out, without a roll cage, the harness belt idea is probably not a good one in the S2000 anyway. Remember that even in an autocross, you can still flip a car. How? hit a curb sideways, or go off the road sideways and have the tires dig into the dirt.