924Board.org

bcblase · Joined: 23 Oct 2007 Posts: 574 Location: Winchester, VA

My 924S is about totally stripped down to bare metal and is ready for roll cage installation. It will be going to the local race car cage builder in a few days. He does mostly larger track cars, and has only done a few Porsches in the past.

Any advice on the cage design?

Any pics of a really good cage design?

Thanks,
BC

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1987 Porsche 924S - track toy
1986 Mercedes 190E 2.3-16v - autocross
2007 F-150 5.4L Lariat Supercrew - tow beast
1994 Volvo 850 Race Wagon - 24 Hours of Lemons Car
2001 BMW 325xi - daily driver

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Six pix starting here, courtesy of Peter Utzon:

Also, you can't go wrong copying the GTR cages:

...or Steve Bassington's new setup:

_________________
erstwhile owner of just about every 924 variant ever made

924RACR · Posted: Mon Jun 01, 2009 9:53 pm Post subject:

Yes, go to the sills, not the floor!!! Also note the rear braces in those examples - no rear braces to the wheel wells!!! There's no structure up on the wheel arches. I've seen plenty of less-talented fabricators go there. Check out my page too, under "Construction" - there's a few old shots of the cage in there, before we did the cross-bracing and NASCAR bars. But I like the rear bracing on Bassington's cage better.
_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Might as well show off Todd's handiwork on my cage...mine is only a six-point setup, but I'm very happy with the final outcome. 21 pix starting here:

FWIW, my setup was based on an Auto-Power bolt-in roll bar with their "u-weld-it" cage. I opted not to go with the hoop because I won't be tracking competitively. As a result, we didn't use all of the pieces from the u-weld-it kit, and modified how the door bars are configured. Also, we put significant thought and effort into the reinforcing pads on the rails as well as the rear floor pads, which you can see earlier in the album.
_________________
erstwhile owner of just about every 924 variant ever made

Fifty50Plus · Posted: Tue Jun 02, 2009 2:18 am Post subject:

For what series is the car? SCCA's General Competition Rules have diagrams of what is required plus restrictions on attachement points to the chassis. The first pic of the car with the orange door frames isn't legal in SCCA. You can and should design a cage that will add to the re-saleability of the car should you choose to move on.
Regards,
Chuck

bcblase · Joined: 23 Oct 2007 Posts: 574 Location: Winchester, VA

Thanks for the photos! Keep 'em coming...

Yes - I am thinking 944Cup or 944Spec in the future, so I know it will need to be SCCA legal - I think the specs that PCA-NA uses for their club races are the same as SCCA or NASA. I have printed out both specs, but the cage builder has requested some photos, as well as written specs.

I definitely want the "NASCAR" style door bars on both sides, as this will still be a DE car for a while until I get my license.

BC
_________________
1987 Porsche 924S - track toy
1986 Mercedes 190E 2.3-16v - autocross
2007 F-150 5.4L Lariat Supercrew - tow beast
1994 Volvo 850 Race Wagon - 24 Hours of Lemons Car
2001 BMW 325xi - daily driver

Izzy's Cages · Joined: 31 Jul 2009 Posts: 1 Location: St. Louis, MO

I won't comment on the designs, but here are a few of mine:

www.izzyscustomcages.com/PorscheCages.html

Most recent Spec 944:

_________________
Scott Rhea
www.izzyscustomcages.com
It's not WHAT you build, it's HOW you build it.

924RACR · Posted: Fri Jul 31, 2009 9:52 pm Post subject:

Scott - welcome to the board!

I'd want more arm room than shown in that Spec car, but definitely the right attachment points etc! We started with X bars in mine, evenually moved out to wide NASCAR style bars. Sorry, no recent pics to show...
_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

Timmay! · Joined: 22 Jul 2006 Posts: 243 Location: San Diego, CA

Blase,
PM me and I'll show you 5 years worth of cage evolution in our 944 Spec cars. The door bars must go out into the door. The feet must go to the sills and longitudinals. It must fit TIGHT against the A and B pillars and still have 360 degree welds, etc.
I'll pull pics and transfer them to photobucket, then post here later.........too tired now. Frickin 944 clutch!

_________________
Current project 1981 931
944 spec # 22 924S
77 924 Martini. Rescued. Sold
88 924S SE. Rescued. Sold
PCA since 1985

MOPARPWR · Posted: Sat Dec 05, 2009 2:09 pm Post subject:

How much would a cage like that cost?
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1977 924

Timmay! · Joined: 22 Jul 2006 Posts: 243 Location: San Diego, CA

I'm happy to pay my cage builder between $2000 and $2500 for a well built cage.
_________________
Current project 1981 931
944 spec # 22 924S
77 924 Martini. Rescued. Sold
88 924S SE. Rescued. Sold
PCA since 1985