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Harness Bar

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Old Dec 11, 2012 | 10:47 PM
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Harness Bar

Hey guys,

I found some cool options for 4th gens for harness bars, I just wanted to see if I can run one and pass tech for NHRA. Here are a few I have found:

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I realize something would probably need to be fabbed for it to fit my car, I just don't want to finish it and find out it's illegal.

Basically, I have plastic Summit seats due to being 6'6" and my head touching the roof, so now I would like to run 5 point harnesses at the track.

I have had an 8 point cage before, and do not want one in this car. Thanks in advance!
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Old Dec 12, 2012 | 08:07 AM
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Re: Harness Bar

No reason for it to be "illegal" but as far as tech is concerned it's not going to be any different than a car w/ stock seat belts & no roll bar.


The first one I don't really understand the point of, when you could easily have run a bar straight across near the rear speaker locations. Would have been more solid and either way the rear seat looses what little function it ever had. - The second one I see the theory of being able to fold it back & still utilize the rear seat on the street, but honestly to me it looks more like a ***** show than real function.
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Old Dec 12, 2012 | 08:48 AM
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Re: Harness Bar

i dont like it. i would just put a rollbar in it. lol rear seat is unusable anyways.
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Old Dec 12, 2012 | 12:46 PM
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Re: Harness Bar

I get what you guys are saying, here is my old car with an 8 point:



I feel like I did the roll bar thing, now that the limit is 11.49 I just want to run my belts the proper way.

I think what I would do, if you look at that first picture with the single bar. I would like something like that, but more easily removable and would only run it at the track. On the street, I would just run lap belts. That is what I used to do when I had my 8 point cage.

I wish you could safely floor mount the belts, then I wouldn't even be looking at a harness bar.
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Old Dec 12, 2012 | 01:38 PM
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Re: Harness Bar

Originally Posted by unknown_host
I wish you could safely floor mount the belts, then I wouldn't even be looking at a harness bar.
Yeah, but impact back compression would be a very bad thing.
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Old Dec 12, 2012 | 01:55 PM
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Re: Harness Bar

Originally Posted by unknown_host
.....I wish you could safely floor mount the belts, then I wouldn't even be looking at a harness bar.
Would tech allow a removable shoulder harness bar mounted like the swing out door bars? You know....2 C-shaped welded stubs facing rearwards from the uprights inwards & the bar across bolted/pinned into the welded saddle?

As for alternative to a cage shoulder bar front seat shoulder harness mounting points.
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Old Dec 12, 2012 | 11:40 PM
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Re: Harness Bar

Originally Posted by Shagwell
Yeah, but impact back compression would be a very bad thing.
Which is the entire reason I started looking at the harness bar . I want aftermarket belts but no cage this go around, eh it's a paradox I guess.
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Old Dec 13, 2012 | 02:01 AM
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Re: Harness Bar

Ok so I have a question, 5 point harness and fire jacket are 11.49 or faster correct? Is there a rule against running a lap belt in my vehicle running 11.50 or slower, if I choose to run just the lap belt from the 5 point harness?
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Old Dec 13, 2012 | 07:03 AM
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Re: Harness Bar

Originally Posted by unknown_host
Ok so I have a question, 5 point harness and fire jacket are 11.49 or faster correct? Is there a rule against running a lap belt in my vehicle running 11.50 or slower, if I choose to run just the lap belt from the 5 point harness?
Usually anything that was factory equipped with a shoulder strap is required to still have it. - Lap belts are only allowed for slower speeds in cars that were lap-belt only from the factory.

I don't think the harness bar is a bad idea, just think I would do a more straight forward set-up than those you posted pics of. A set of brackets that bolt in somewhere around the rear speaker holes and a bar bolted across between them; would still be simple enough to make removable if you wanted re seat access/useage too.
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Old Jan 20, 2013 | 03:07 PM
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Re: Harness Bar

The point of that bracketry is to make the bar easily removable and so that you dont put a bunch of holes in the car. Its for the weekend racer who wants to maintain stock appearances. If they wanted to Im sure they could just weld a cross bar or mount one somehow and get rid of hte rear speakers and be done with it but it's just a way to have the benefits of the harness without being all "because racecar!" about it.

I did find this, though...

http://www.andysautosport.com/chevro...h90000037.html

The fourth gen bars will not fit our cars?

Last edited by InfernalVortex; Jan 20, 2013 at 03:15 PM.
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Old Jan 23, 2013 | 09:01 PM
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Re: Harness Bar

a 5 pt isn't required till a roll bar is, so what is the point of this? 5 pt harnesses are a pain to use...if i didn't need them, i wouldn't have them.
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Old Jan 23, 2013 | 11:19 PM
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Re: Harness Bar

Originally Posted by mw66nova
a 5 pt isn't required till a roll bar is, so what is the point of this? 5 pt harnesses are a pain to use...if i didn't need them, i wouldn't have them.
Hey Matt! I am 6'6", with the stock seats my head full on touched the headliner/roof. So I bought plastic seats to get me sitting lower and reduce weight. Now, I have plenty of headroom, but my factory seat belts don't work well with these seats since they have the guides on the top of the seats anymore (if that makes sense).

My thought was to run the lap belt portion on the street, and put the harness bar in at the track.

Am I crazy?
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Old Jan 23, 2013 | 11:26 PM
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Re: Harness Bar

Here are some interesting pics from a google search:




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Old Jan 24, 2013 | 08:10 AM
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Re: Harness Bar

Originally Posted by mw66nova
a 5 pt isn't required till a roll bar is, so what is the point of this? 5 pt harnesses are a pain to use...if i didn't need them, i wouldn't have them.
I dont know about the other guys, but I would just like it for autocross. Its not gonna be useful for NHRA or track days, since they're going to require cages anyway, but for a mostly street driven autocross car it really makes things a lot easier. lets you worry about trying to drive the car instead of trying to hold yourself in place. I really dont want to be stuck with a 5 point harness and 6 point rollbar on the street for exactly that reason, and the point of the harness bar is that you DONT get stuck with a roll bar and harness on the street. But since there are no harness bars available for thirdgens I think Im gonna try to just rig up some lap belts using the factory hard mounts if I can do that and retain the factory belts.

From what i gather, the vast majority of harness bar users are autocross people, or people who go to track days that don't require full cages. So, basically, purely an exercise in holding you in place during corners, not for rules legality.

Last edited by InfernalVortex; Jan 24, 2013 at 08:13 AM.
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