2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

5 point harness worth it ?

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Old Jan 12, 2011 | 04:40 PM
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5 point harness worth it ?

i just wanted to get your thoughts on the subject, is it safer, easier to use ? also it doesnt help that my head is a inch give or take from my roof.
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Old Jan 12, 2011 | 04:53 PM
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Safer than a standard seatbelt? Yes. Easier to use than a standard seatbelt? You will have 5 to buckle.
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Old Jan 12, 2011 | 05:04 PM
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Just please, please, don't mount it ghetto. I'd much rather put my life in the hands of a stock seat belt than a 5 point mounted somewhere incorrect.
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Old Jan 12, 2011 | 05:16 PM
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is it safer
Depending on other safety mods.

easier to use
Absolutely not.

also it doesnt help that my head is a inch give or take from my roof.
You should get a bucket seat with that harness anyways, so get a low mounted, low seating one.

Riz.
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Old Jan 12, 2011 | 07:14 PM
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The only reason why you should even consider this is,

1) your going to autocross or drift quite a bit

2) replacing those god awful auto seat belts

and most importantly,

3) if your putting in a roll cage.

If not its considered very ricer.

and please if you are going to put them on, please use a harness bar, NRG makes one, but I have never seen a good write up or anyone in general with them.
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Old Jan 12, 2011 | 07:22 PM
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with all said above, not many people here will probably have one.

I had a friend who put 4 point in his dam celica supra with stock seats,.. **** was horrible lol

Do it if you have a roll bar at minimum and a aftermarket seat in my honest opinion.
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Old Jan 12, 2011 | 07:25 PM
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When it comes to car control once you drive with a harness it's hard to go back. You don't realize it now but even with the FCs good seating position and lateral support you are bracing yourself alot and using the wheel to stay in position when driving hard. When you switch to a harness you get to focus on the wheel, your pedals and the car. If frees your mind from constant bracing. It's worth a lot of time on an Autocross course or road course.

Regarding safety. I had the unfortunate experience of totaling a car while wearing a 4 point harness. It has one less connection point but still far superior to standard belt. The crash was dynamic with three sides of my car hitting the concrete barrier hard at separate times. With a three point belt I would have been slammed into my door and I would have had a broken clavicle. Ask an EMT or a cop they will tell you that shoulder belts break your clavicle in a heavy impact.

Convenience. Absolutely inconvenient. At club events or gatherings I was almost always one of the last cars to get moving since my harness took some time to buckle.

Go for it. Check your local laws. Some police frown upon 4 point harnesses. Texas come to mind. I believe Scroth makes DOT legal harnesses but I'm just getting back into tuning so that may be old info.
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Old Jan 12, 2011 | 07:41 PM
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Originally Posted by Mn_Drift_FCon
When it comes to car control once you drive with a harness it's hard to go back. You don't realize it now but even with the FCs good seating position and lateral support you are bracing yourself alot and using the wheel to stay in position when driving hard. When you switch to a harness you get to focus on the wheel, your pedals and the car. If frees your mind from constant bracing. It's worth a lot of time on an Autocross course or road course.

Regarding safety. I had the unfortunate experience of totaling a car while wearing a 4 point harness. It has one less connection point but still far superior to standard belt. The crash was dynamic with three sides of my car hitting the concrete barrier hard at separate times. With a three point belt I would have been slammed into my door and I would have had a broken clavicle. Ask an EMT or a cop they will tell you that shoulder belts break your clavicle in a heavy impact.

Convenience. Absolutely inconvenient. At club events or gatherings I was almost always one of the last cars to get moving since my harness took some time to buckle.

Go for it. Check your local laws. Some police frown upon 4 point harnesses. Texas come to mind. I believe Scroth makes DOT legal harnesses but I'm just getting back into tuning so that may be old info.
I didn't break but severely bruised my clavicle in an accident when I was a teen, in someone else's vehicle.

We hit a tree at 40mph. They hit the tree, I wasn't driving.
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Old Jan 12, 2011 | 07:47 PM
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Dont do it unless it is a track car its a PITA
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Old Jan 12, 2011 | 08:26 PM
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i was thinking about taking it to the track, and getting after market seats because im too tall for my fc . should i get one for the passenger to ? or just me .
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Old Jan 12, 2011 | 08:31 PM
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Think about where the shoulder belts will attach. If you do not have a roll bar, then DO NOT INSTALL A HARNESS.

I've seen complete idiots install them with extensions that go to the floor bolts behind the seat.

Do you know what compression does to one's spine? Belts pressing DOWN on your shoulders in a wreck are more dangerous than the factory seatbelt.

Look at a proper installation or at factory seat belts.. Attachment point at or above your shoulder line so that the belts hold you in the seat, pressed against the back, not pulling down.
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Old Jan 12, 2011 | 08:38 PM
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It's illegal to use them on public roads.
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Old Jan 12, 2011 | 08:53 PM
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attach the lap belts using the stock mountsby using extended lugs.then attach the Crotch belt to where-ever you can securely.(floor)
The shoulder belts can be attached to the back section behind the Fiberglass floor bucket area,Or try to attach them to the Strut bar running across the rear of the car.
OH.this setup would allow you to retain the stock belts.
I really do suggest a NRG bar though.
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Old Jan 12, 2011 | 09:02 PM
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Originally Posted by PnoyRx7
i was thinking about taking it to the track, and getting after market seats because im too tall for my fc . should i get one for the passenger to ? or just me .
I havent seen a aftermarket seat that will sit lower than stock.. I have corbeau cr1 and harness not a fan of them . I have stock ones in my vert and A.E. again I wouldn't do it unless it was a full track cark... as far as being Illegal so is not running a front plate, modifing exhaust ect.
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Old Jan 22, 2011 | 12:09 PM
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In my vast one harnessed car experience, and some general research, bolting the harness to a position on the vehicle behind you is okay as long as the mounting point isn't over 30 degrees below the horizontal perpendicular of the vertical (or close to) line created by the back of your seat and your spine. Otherwise they're right, you will compress your spine in a head-on. The best way to avoid this if you don't have a back seat or high enough mounting point is by wrapping a harness bar or a cross brace on a roll bar.
Now as far as low seating goes, my even more vast two aftermarket seat experience as well as more research has shared that a pair of fixed side mounting brackets on a fixed back bucket will usually allow you to nearly set the seat bottom on the floor of the vehicle, generally giving the lowest position. These fixed buckets usually have slimmer padding on the bottom and therefore become less comfy as the day wears on...a trade-off for stability and ride height just like the holding power vs. ease of use of the harness. Either way it's important to get a seat back with shoulder harness holes as close to the tops of your shoulders as possible to ensure as straight a line to the rear mounting point as possible.
Tip: Keep the stock belts bolted in and just toss the harness straps under and behind the seat when not at the track.
I have just recently purchased a Bride Zeta III Type-L with the type FG (lowest sliding seat rail Bride makes) seat rail for my FD with sunroof. In a couple months I will install it and give a thorough description for inquiring minds. I'm 6'2" so hopefully I can adjust my seating position to allow me to get a helmet in there. (I'm not optimistic just yet) I did purchase a slightly smaller diameter steering wheel for clearance as well as a spacer or two to move the wheel closer to my new seating position and away from my sasquatch knees. This steering extension may allow me to comfortably recline the seat slightly granting me the head clearance us larger folk with FDs are always chasing.
I'm toying with the idea of removing the headliner and power sunroof rails in pursuit of a hinged unit(think 240sx roof, 1st gen Eclipse roof or Dodge Caravan rear side windows) and a bit more clearance but have yet to actually look at the mechanisms and roof bracing under the head liner.
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Old Jan 22, 2011 | 12:25 PM
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Don't bother unless you have a seat and roll bar.
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