Undutched

Hi all,

This issue has been bothering me for quite a while. I want to make clear that safety is by far the number 1 priority for me. I have family and a business to run, so the price is secondary.

But neither do I want a full on race car, that I can't use on a daily basis, yet I drive on tracks at least once a month.

I simply don't know which direction I should go with the cage for my car.

Weld or bolt roll bar?
How far should a cage reach? Can just parts of it be welded and the rest removable?

GeorgeK

Anything that goes ahead of the front seats' headrests is a big no-no on the street.

Beyond that, bolt on is MUCH simpler to implement, and to remove.

freno a mano

matter half cage uses stock rear seat belt holes, to me is the best for road use.

Spyerx

Half cage welded in is what I'm doing.

biggynuts01

what cage is this? Im interested.

18T_BT

Looks similar to this: http://www.fvd.de/us/en/Porsche-0/-/...onal_bars.html



Unless this is a real track rat that you don't plan on converting back to street duty, I wouldn't do a weld in approach. Removing a weld in is a major hassle.

Spyerx

Bolt in cages are really nothing more than a harness bar. on a 997 which has substantially stronger structure i'm more comfortable with a design like this. A welded solution if you're looking for proper safety is a requirement on these older cars (in MY opinion). Specifically in a roll over. A proper rear cage welded to the b pilar and welded to the frame and to the rear frame (not the deck sheet metal) will help substantially protect against a roof collapse.

So if safety is your top concern, a full welded cage with a halo seat, but driving on street is really not idea.
Next best would be a rear welded cage with halo seats, hans, helmet, harnesses, etc.

I'm looking at an option that may allow me to use couplers to install side bars and head bars when on track, remove them for street.

Undutched

From a shop next to my engine builder. He is supposed to make it.

You see my problem exactly. It isn't all that easy just removing parts of the roll cages either. It's a pain in the butt.

Talat

For my Heigo half-cage, the spreader plates are welded in and then the cage bolts to this. So even though it's marketed as a weld-in cage, you can remove the cage by unbolting it. The spreader plates would remain though.

John McM

As with everything it depends what the end goal is. I race Honda Integras in a syndicate with other Porsche Owners. Because one of us had raced 944s and had serious accidents we went with a full welded in cage. While it makes the car safer it makes it almost unusable for anything else. When I asked a race car builder if I should improve my 964 safety with a half cage for track days he said it was largely pointless as the 964 is strong and a half cage wouldn't protect me against being hit side on or in front which was relatively unlikely on a track day anyway. To help prove the point about strength a 964 had a brake fade at the end of the main straight. It went through a sand trap at 120km/hr, hit the tyre barrier and went over it, finally hitting a digger outside the track. The driver walked away.