Thoughts on a Top Tether Point
 

I am looking to install a Cosco Highback 3 point harness car seat for my 4 year old son in my 1975 Targa

The carseat fits well in the back, I will be able to secure the base of the carseat via 2 racing Eyebolts 7/16-20 (with the shoulder to provide lateral strength).

The top tether attachment snaps well to the rear shelf seat strap loop, however though esthetically acceptable, I doubt sheet metal screws screwed into the rear shelf would withstand a sizable impact, thereby rendering the purpose of the top tether useless.

It would be a simple to drill into the rear shelf and place a large metal base (4 X 6) underneath to screw the seat strap loop into. However, doubt the loop itself is strong enough to withstand a rear impact.

My questions are;
1) Does anyone know how strong these seat strap loops are?
2) Can they withstand a 40 mph rear impact?
3) Any Suggestions for a replacement?

Here is a photo of the rear shelf seat strap loop.
http://forums.pelicanparts.com/uploa...1432480764.jpg

Those luggage strap guides are not meant for any kind of impact restraint. Don't use them. What you see is two sheet metal screws, self tapped into the rear firewall - no reinforcement. Look elsewhere for a proper anchor.
I suggest drilling a new hole in the firewall, adding a seat belt restraint washer inside the engine compartment, then bolt in a race seat belt eye-bolt.
Bill K

You might be able to remove those screws and run a drill bit down into the engine compartment. Then you could reinforce the attachment any number of ways. Don't use that luggage strap thing for a car seat.

Below is a diagram provided from a major child car seat manufacturer on how to install the top tether for the toddler/youth car seat

I was thinking of doing something like this but in addition to the bottom washer use a large thick sheet of steel for additional strength

http://forums.pelicanparts.com/uploa...1432585874.jpg