Anti submarine strap floor drilling location - advice needed

[Boss302RI]

I'm installing Scroth 6 point harnesses and Cobra Sebring Pro-Fit seats on top of planted performance seat mounts. Everything is fine except for this: based on the proper locations where the 2 holes should be drilled in the floor for the submarine straps harness bolts (at least on the driver's side) lead to 1.) the fuel line under the car, and 2.) an area of thick reinforced steel that is not flush with the floor. I think I can manage around the fuel line but I don't know how to address the second problem.

Simply put, my question for those of you who have a similar set-up is where did you drill your holes? Or did you buy or build some sort of bar on the seat mount instead? I was told by HMS Motorsport that they are supposed to go directly into the floor.

Thanks in advance.

Steve

 

[Boss302RI]

I figured it out. Just had to go a bit wider and farther back with the holes than I had originally planned.

 

[AboveAvgJoe5]

I'm also getting to close to installing fixed-back seats, a Watson 4 pt bar, and 6 point harnesses for the upcoming track season. Is there an alternative to mounting the sub belts without having to drill through the floor?

 

[Big Black]

Flat bar fastened by the two rear seat bolts with a tab in the middle.

 

[ArizonaBOSS]

You can mount the sub belts to the seat bracket (especially something like a Planted bracket with lots of space to attach a pair of eye-bolts upside down under the bracket). If you are in an impact that separates the seat from the floor, you have more to worry about than your sub belt.

 

[steveespo]

You can mount the sub belts to the seat bracket (especially something like a Planted bracket with lots of space to attach a pair of eye-bolts upside down under the bracket). If you are in an impact that separates the seat from the floor, you have more to worry about than your sub belt.

Arizona Boss is correct here. What I did was weld a 1” diameter steel bar underneath the Planted sestbase and then threaded the sub belts onto it. Makes for a neat install, allowing the sub belts to stay with the seat assembly when swapping from street to track. This assembly was tested in very hard impact (head on, 55mph) and functioned perfectly without failure or injuries.


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[AboveAvgJoe5]

Thanks for the awesome ideas! Think I may go with @ArizonaBOSS idea since I don't possess any welding skills. Looking to change that sometime in the near future though.

 

[strengthrehab]

You can mount the sub belts to the seat bracket (especially something like a Planted bracket with lots of space to attach a pair of eye-bolts upside down under the bracket). If you are in an impact that separates the seat from the floor, you have more to worry about than your sub belt.

Exactly what I did.

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[Mad Hatter]

WHat do you think of these harness clips?? They are from cooltech and go on the same rear bolt as the seat. Harness and submarine belt attach to it.

http://www.cooltechllc.com/ford-boss-302-parts-accessories/71--harness-clip-set-single-seat.html

 

[TymeSlayer]

Same ones I'm using for HPDE. Easy install and keeps me as snug as a bug in a rug. I got them second hand from a TMO member along with a sub belt bar made by 06mach1 since I'm just running a harness bar for now.