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Pelican Technical Article:

DIY Child Safety Seat Ideas

Aaron Schreder (A.J.)


6-8 hours


$ 350




Right angle drill, metalworking drill bits, socket and ratchet set.

Applicable Models:

Porsche 993 Carrera (1995-98)
Porsche 993 Carrera 4 (1995-98)
Porsche 993 Carrera 4S (1996-98)
Porsche 993 Carrera S (1998)
Porsche 993 Targa (1996-98)
Porsche 993 Turbo (1996-97)

Parts Required:

Evenflo Odyssey V, Century Breverra tether mount, tether plug. 964 lap belts.

Performance Gain:

Keep your kids safely seated in your 911.

Complementary Modification:

Air box removal and filter replacement.

DIY Child Safety Seat Ideas

This DIY is contributed by Aaron Schreder (A.J.)
Visit AJ's home page

** DISCLAIMER **I can in no way vouch for the safety of the arrangement shown on this page.  This page is only intended for the sharing of ideas, and has
not been proven to be more safe or less safe than any other arrangements for mounting child seats in any vehicle.  I am not aware if this setup
is legal to use for small children, and have not checked to see if it meets Federal standards for child size or child safety. PLEASE USE COMMON SENSE


Evenflow Odyssey V

The design of the Breverra works great as a booster, but when used with the harness its useless.  The anchor points for the belt in the rear of our cars sits too far forward of the crease, This is why no one can get the Breverra to work with kids our age and or size. There is an amount of slop that can not be adjusted out with the three point seat belt, even with the top tether in place.  The lap belt eliminates a lot of play. It can't overcome the design of the Breverra.

I settled on an Evenflow Odyssey V.  It is just a seat with a harness, there is no drop down bar.  in conjunction with the lap belt and tether, there is absolutely no movement with this seat in place. 

The tether point

The Century Breverra comes with a tether mounting point that I used. It's worth getting the seat just to get the mount.

The rear deck in our cars was designed with the tether mount in place. but it wasn't put into production. The hardest part of mounting the tether is removing the airbox. You will need a right angle drill to finish the piercing the hole through the speaker deck. The tether gusset and top hole are already in place.  If you haven't removed the entire airbox before, please allow a good half day for this project.

Tether plug

The outline for the tether hole is cast into the back of the speaker deck. Cut carefully and you should be fine.

I posted a request for help in installing the airbox. A wonderful person from Boston provided a detailed explanation. I think it is in the archives under airbox.

plug  911.555.627.00.01C

Lap belts from a 964

Derek's idea to use the lap belt from a 964 is probably the best idea for those trying to figure out how to get a child seat into the back of a 993.

lap belt  964.803.015.00.70B

Finally, this is not a huge undertaking. However it is helpful to have some similar experience to fall back on for reference. There will be one or two circumstances that will come up that call for good judgment based on past mistakes.

good luck,  derik


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Page last updated: Tue 3/20/2018 02:19:45 AM