I thought I'd start a new thread since it combines topics, and include product specs and some quick pics.

Here is my setup, which I'm very happy with:

I have both OEM and Harness in the car (for use separately of course).

6 Point Harness - Schroth Enduro Belt with GT3 eyelets for the lap belts.
http://www.schrothracing.com/store/C...profi/profi-II

Mounting Hardware for Belts (but I didn't use their eyelets, just bolts and spacers/step washers):
R-9003 Clip-in Outboard lap belt Kit (does both seats)
R-9004 Clip-in Inboard lap belt kit (does both seats)

Fire Extinguisher from LPI Racing:
Safecraft Fire Extinguisher - 2.50 Lb. - Polished Stainless Steel

Fire Extinguisher Mount & Quick Release:
http://www.bkauto.com/porsche/r2030.php
http://www.bkauto.com/porsche/r9520.php

Submarine Bars from BKAuto:
R-9032 Driver Side Sub-strap Mount
R-9034 Passenger Side Sub-strap Mount

 

Great post! Thanks for all the very useful info!

 

The problem with mounting a harness to the Spyder's rear stock bar is that the angle is too high on the shoulder straps. That is not ideal at all for a harness. You want the shoulder strap even, or slightly lower than the holes in the seat.

 

Understood, but there is perfect, and almost perfect...aka great for an individual's application.

Shoulder belt angle when mounted on the existing cross bar when the belts are actually on (over the driver's shoulder) and not resting on the seat, is much less than it looks in the pics. This depends on your height of course. At 6', it is almost perfect for me, and in a rollover, I wouldn't slide up more than if the belts were mounted lower. A very minor and slightly less than optimal angle on the shoulder belts of a 6 point harness is MORE safe than simply using the stock belt. Combined with correct use of the lap and anti-sub belts, it's fine. Perfect would have the lap and anti-sub belts bolted to the floor and not the seat. Perfect would also be a full cage. In fact, perfect would be a Cup Car with all the bells and whistles. The trick is to find a safer and better alternative to the stock seat belt while tracking the car. Even the 996 GT3 doesn't have both lap belts bolted to the floor.

The advantages of a 6 point in driving on curvy back-roads and track days are numerous. I rarely use my stock belt, as the 6 point keeps me in the seat. Not sliding around is key, and that car is capable of throwing you around the cabin even with mildly spirited driving.

Given the options that aren't cost prohibitive and that don't diminish the everyday usability of the car, and if you're only using the car for track days and not actually racing it, my setup is pretty darn awesome (which is why a ton of other Spyder owners have implemented it).

 

TheKane - At 6' do you pass the broom stick test in the Spyder? I'm 5'10" and I am just underneath the bottom of the broom stick (with helmet on). Phil

 

I'm 5' 11" and with an XL helmet I have about 1" to spare with the Sport Bucket seats. The seats could be about an inch lower for me and they would be perfect.

 

I'm 6' and I pass the broomstick test, although I've never had anyone but me check. If you're desperate, you can remove the seat pads, which will drop you 1-2". Some track groups don't let you take passengers, but note that the Spyder passenger seat is higher than the driver's side (which may be the case in the 911 but I can't remember from my time in them). They may not pass the broomstick test.

 

Nice setup. Thanks for posting!

 

So I pulled the trigger on the Schroth GT3 ProfiII-6 harnesses. I installed the passenger side harness with the BK submount today. Straight forward install. A few points/questions:

1) The passenger side submount bar has a loop. What is the loop for? Per the instructions I wrapped around the bar and not the loop, but what the heck is the loop even there for?

2) How do you guys tuck away the belt on the side of the stock belt receptacle during street use? There's no room!

3) Regarding concerns over mounting to the stock roll bar: I would agree with Kane that it should be fine. I'm 5'8", and my shoulders sit at about the same level (maybe 1-2cm lower) as the mounting point on the roll bar. Phil, if you're reading this, you'll get a chance to see for yourself on March 17th.

4) The GT3 eyelets match perfectly to the carbon bucket seat's mounting points

Pictures and more impressions to come after I finish installing the driver side. I'm waiting for my fire extinguisher and red alcantara inserts to come in!

 

Another point I notice is that you've anchored the lap belts to the seat rails, when they should be anchored to the body of the car. If the seat goes loose, your belts become worthless. I have two eyebolts through the floor of the car, behind each seats for my lap belts to provide another anchor point. If you're worried about putting holes in your car, I didn't find it a big deal. You'd never know they were there unless you looked for them since there are no back seats.

 

Point taken, but the stock belts are mounted to the seat as well. A lot of bolts would have to fail for the seat to come loose.

 

cviles - you are correct, that in a perfect world I'd have the lap belts bolted to the floor. In a perfect world I'd also like a Porsche 911 GT3 RSR. I'm not racing, just doing simple track days. Since I installed the harnesses (and bolted back in the seats), I'm comfortable with the minimal risk.

 

Orthojoe - a few answers below

1) If I remember correctly, it was to keep the harness straps from sliding back and forth.

2) Not sure what you're asking. Can you elaborate?

3) This wasn't what you asked, but the extra belt can be rolled placed in the rain channel under the rear lid, just behind the roll bar, zip-tied together. Neat.

 

Aha! That makes sense! Thanks!

The lap belt on the outer side of the seat easily tucks through the pass through hole and underneath. On the inner side lap belt, there's no room. The seat is up against the center console, and the stock belt buckle receptacle is taking up space on the pass through hole, so it's tough to get the inner lap belt out of the way for street driving. Is there a good way to stow away the inner side lap belt?

I'll try that. Thanks!

 

I understand your point now. I usually wear the full 6point harness while driving, but I live on a curvy road, and I'm quick at putting it on. If I don't want it on, then there is a solution I devised below (shown on the passenger side), that works very well. Note that I normally just keep the passenger harness buckled like someone was sitting in it, with all straps tight, so the straps don't flop around (you can even move the seat forward to tighten the shoulders if needed).

1. I lengthen the anti-submarine and lap belts all the way.
2. Run lap belts flat along the sides of the seat, tucking between the forward seat cushion and the side of the seat.
3. Pull the anti-sub belt all the way forward and dangle over the front of the seat.
4. (this step may or may not be needed) I tied a bit of black elastic that came with the belts around the ati-sub bar underneath the seat, and wrap it over the anti-sub buckle.
5. buckle the lap belts and the anti-sub belt together.

I've included some pics as well.