race harness - 986 Forum - The Community for Porsche Boxster & Cayman Owners

djomlas · 03-04-2007, 11:04 PM

are there any restrictions/rules when it comes to this in autocross events?
and also, are there anywhere any kind of instructions or pictures what these look like in a boxster?
either a 4 or 5 point ones.

John V · 03-05-2007, 03:42 AM

First, the stock seats are not designed to work with harnesses.

Secondly, they are illegal for SCCA autocross when used in convertibles. You can imagine why. Sorry.

Perfectlap · 03-05-2007, 05:50 AM

well I don't about your area but here we have half a dozen different clubs some regional some national like PCA and SCCA. They all have differing rules and enforce the rules differently.
I did see someone fit 6 point belts to a stock 996 seat once, I think pics were on Renntech at one point.
Then there's the CG Lock which I've used, just a fastener that keeps the stock seat belt from coming loose at the lap. Very effective for a few bucks.

If you like Autocross and are going to venture onto the track investing in a GT3 seat or Recaro Pole Position, which bolts right into the existing floorboard holes-no need for an extra set of rails,
is a good investement.

John V · 03-05-2007, 06:09 AM

I would really like to see pictures of a 5-point belt used with a Boxster / 996 seat. Did they cut a hole in the seat cushion for the antisub belt?

I wouldn't trust any club that allowed a convertible (with no rollbar) to run with a harness. Scary thought. If you're investing in a fixed-back seat and harness (ostensibly in the interest of safety) then the additional cost of a rollbar extention seems a trivial, but necessary, addition.

Perfectlap · 03-05-2007, 06:24 AM

that was my mistake, it was a four point harness. and it was a Boxster not a 996.
also, Don't forget that if you are under the broom stick point the windshield header and roll hoops provide more than adequate roll over protection with the mere use of a standard stock seat belt which isn't going to hold you in place nearly as well as a race harness.

djomlas · 03-05-2007, 06:55 AM

i found one guy that did it

there are more pics on his site as well.

and also, about the broomstick rule, does that also apply if you show up there w a hardtop?

ChrisZang · 03-05-2007, 07:03 AM

Hi,

I was going down that lane myself some time ago and did some research
there are very good instructions at http://boxsters.addr.com/hacks/harness.htm
I BELIEVE (it's not confirmed) that the Brey-Krause parts which you will need are R-9001 and R-9003

HOWEVER (and that's where I stopped) when I did driver education in preparation for DE/TT events I was told that running 5 or 6 point harnesses with a stock Boxster seat is actually quite dangerous. The stock seat is kind of shaped like an "A" which means that the shoulder harnesses will have the tendency to slip off your shoulders. And I was told that they will do that at the worst moments

This means that you will be safer with your stock 3-point harness.

I live in CA and if I want to do TT in my PCA region I need to buy racing seats (the one's with the holes in the back for the shoulder harnesses) to install 5/6 points

Better check that with your chapter before you spend a lot of money on something they won't allow you to use.

Let me know how it goes
Christopher