rgnhd

I am looking at getting some Corbaeu Forza Sport side mount Racing seats.
I'd like to mount them as low as possible and I am not worried about running sliders as I am the only one that will be driving the car and it's only for competition.

That being said has anyone mounted their seats directly to the floor board only using the side mount brackets?

I would like to see setups similar to what I am looking to achieve.
Thanks in advance!

P.S. I am also in a s13 hatch.

KAT-PWR

Cut and flip the transmission tunnel hump.

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rgnhd

Thanks for the advice unfortunately that doesn't fully answer my question. I'd just like to see exact setups of when the seat is mounted directly to the floor board.

I figured the tranny tunnel had to be modified. However I am more interested in exactly how the brackets are mounted to the floor. I know the metal seems to be pretty thin.

derass

I know someone who did this, it worked but I think was it was pretty shitty and wouldn't trust a few welds and a thin, rusty floor.

It would be up to spec by adding counterplates to either side of the floor. (Check page 19 here: http://argent.fia.com/web/fia-public.nsf/48F944E6E0AB57D3C125795F006227B7/$FILE/253%20(2012).pdf)

Or better yet, use long "counterplates" on the inside that run across the width of the driver area, wrapping upwards against the doorsill and transmission tunnel and welded in place. You would only be adding 3mm (1/8" as per FIA regs using steel).

Google some pictures to get an idea of what others have done. It's going to take some fab work.

rgnhd

Derass, Thank you for this. I would be perfectly okay with creating something like that. I've been looking for pictures similar to this type of setup however I have been unable to find anything at least in a 240sx.

derass

I used this as inspiration for my hard-mounted seat.

It was only after it was done that I thought of using counterplates in the same fashion.

Just a heads-up, mounting to the doorsill interferes with the chassis harness and hatch/gas door release but I managed to make it work.

rgnhd

Thank you so much for this! How did you get the hatch release to work? That's the only thing I should be keeping in that area as I will be running a 4 point harness.

derass

My forward bar was welded to the doorsill right where the latch use to bolt up. I just tack welded it a little bit over.

When I said chassis harness, I meant the wiring harness for the rear lights etc. It runs down the driver side doorsill and passes over the existing brace that runs across the car. So just keep that in mind. It will be obvious when you take the carpet out.

rgnhd

Derass,

Thank you for clarifying that. I already have my interior completely stripped out. I am redoing my chassis harness so that's why that didn't cross my mind right away.

jr_ss

I'm pretty sure all seats, racing or not are floor mounted...

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rgnhd

Bravo Sir... Bravo