J Silverman

Here is the thing that none of you are thinking of. Why do racers wear HANS devices and street drivers dont need to? My money is on the fact that in a street car your body can move more as a whole so your head and neck doesnt take the majority of an impact. In a harness your body is tightened down so it wont really move, but your head is not. If you want to add the harnesses to use when your on the track or at an autocross thats fine, but for a daily driver I wouldnt do it. If youre worried about sliding while your driving around, there is a company that makes a product called the CG lock. It locks you lap belt which holds your butt firmly in the seat, but still allows the seatbelt to function as the manufactrer designed. It costs $40 and it a much better alternative for street use.

pjburges

Thats good intuition Silverman...

In a racing scenario its more likely that you flip your car or go bouncing of the track through the sand which creates the need to be held into your seat by a 5 point. On the street its usually a collision which has an enourmous impulse force and with a 5 point your head/neck would be the place that absorbed it, rather than the chest+head/neck.

If you are worried about moving around in your seat perhaps you should move the seat further foward, as this helps to brace you against the wheel. Also, consider the sport seats that came as an option on the cars and the 911's. I really like them, and they would definetly offer more lateral support. Finally look at aftermarket sport seats that have the ability to use some type of harness, but can be used with the 3-point DOT belt in the car. Thats my 2c I guess...

Cone_eater

where is this CG lock found?

xsboost90

i believe www.soloracer.com carries these- good place to buy stuff!

N_Halbert

For a mostly daily driver a 4+pt system would be overkill and is annoying when doing short trips. You need to properly tension the belts each time or else they are a hazard. Standard 3pt belts have this convenience built in. I have both installed and used a Schroth Profi II ASM FE with a Redline roll/harness bar and Ultra-shield side mounted on sliders. If you don't have them on sliders, climbing in and out over the sides becomes a pain.



You are looking at about $550 per seat for parts + $300-500 for the bar.

My seat install thread

Cone_eater

I think I am gonna get new seats and those for now. Maybe install a set of 4-points later for track use only.

J Silverman

Now yorue talking, but pass on the 4 points. There is a reason that they arent allowed to be used in race cars. At a minimum Id look for 5 point with 6 point being preferrable. For track use you can install eye bolts and spring clips on the harness belts for easy removal for daily driver duty.