4/5-point harnesses with stock seats

[Jaxness]

Has anyone seen or thought of a solution to put racing harnesses in the car to work with the stock seats?

I never really paid attention to the back of the seat until I went to look where to run straps.

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[Supr@Freak23]

Following but it doesnt seem it will get traction or maybe the info is somewhere else

 

[handsoffsam]

Post in track section, members there will be able to weigh in. At the very least it‘ll need a harness bar installed.

 

[nibble]

I thought about doing the same but quite a bit of modification to the seat as well strut bar behind the seat. i decided not to do it since that strut bar is not strong enough to begin with and places to bolt on stronger bar may not be strong enough. also, not keen on making hole through leather seat. perhaps someone in future to make this work but so far, to make 5 Pt harness work with stock parts are more of cosmetic than functional..

 

[Jaxness]

Yea, I posted this before I took a close look at the seats to see that there weren't any existing holes to work with, lol.

 

[Supr@Freak23]

It would be best if someone would combine like a half roll cage that would serve as support for the roof and it had brackers behind the driver/passenger shoulders so race belts could be installed

 

[srwhitman]

Anyone make progress here?
I would much prefer to use existing seat - would keep not only aesthetics but not have to deal with airbag lights. Its rather unbelievable to me that they made the seats have what looks like a hole over shoulder but the hole is in the middle - which really is unsuitable for proper harness.

 

[razorlab]

Anyone make progress here?
I would much prefer to use existing seat - would keep not only aesthetics but not have to deal with airbag lights. Its rather unbelievable to me that they made the seats have what looks like a hole over shoulder but the hole is in the middle - which really is unsuitable for proper harness.

yes, swap for a seat that is built correctly for that use.

 

[srwhitman]

Obviously that would work - but then you have to deal with the airbag issues.

 

[DarkZupra]

Obviously that would work - but then you have to deal with the airbag issues.

You can get aftermarket seats with Plug and Play airbags that will also work for harnesses.

 

[razorlab]

Obviously that would work - but then you have to deal with the airbag issues.

Not having airbags or the error? Error takes like 5mins to code out. Easy peasy.

 

[Rocksandblues]

Don’t cut corners w safety.
Want harness - get a bar and proper seat. Although I will never understand why anyone in right mind would want to fool with harness on a daily?

 

[Gotink]

If your not putting at least a half cage in it’s just unsafe to use 5points.

 

[kaj]

Post in track section, members there will be able to weigh in. At the very least it‘ll need a harness bar installed.

Except that's not what a harness bar is for. Anchoring a harness to a harness bar is as bad as using our strut tower brace. Maybe even worse.

If you want a harness, you will HAVE to get a seat that is made for them. If you have a harness, it HAS to be a 5 or 6 point since nobody makes an ASM harness for our car. If you have a fixed back seat (a reclining seat and a harness is NOT safe) and harness, you *should* (The rollover protection for these cars is still up for debate) have a roll bar too (I think that's what people are meaning by "half cage"). I do not believe our cars have viable mount points for harness, so mount it to the roll bar only, NOT a harness bar; that's not what they are for. A roll bar/fixed-back seat/harness all work together. You can have a roll bar without the others, but none of the others without the rest.
This is all from a safety standpoint, despite popular internet opinion and lore. I won't go into all the reasons for the above, as I'm sure you already know. Feel free to take any risks you see fit, of course. We all do it, in some way, all the time hahaha.

 

[Tsuki8]

"Toyota" did it for SEMA 2022:
2 2020s named 10 Second Twins.
https://pressroom.toyota.com/the-toyota-gr-supra-10-second-twins-make-sema-show-debut/

They ran them too lol.
"On its first test runs, the first 10-Second Twin Supra achieved a quarter-mile time in the mid-11-second range. With a bit of ECU fine tuning, the team then achieved its 10-second goal, posting a 10:984 quarter-mile run."

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