harness and racing seat

[JDMStanced]

i plan to purchase a harness bar, 5/6 point racing harness and either reclinable racing seat or racing bucket seat. The bucket seat i'm looking at weighs around 20 lbs.
Does my 350z still fall under BSP class?

[nalbar]

Yes.

F. The driver and front passenger seats may be replaced, with the fol-
lowing restrictions: Seats must be securely mounted per 3.3.3.B.2.
The seating surface must be fully upholstered. Any replacement
seat must be a full back, bucket type automobile seat incorporating
a functional headrest. Kart seats, low back dune buggy seats, and
other similar types of seat are expressly prohibited. Cars may have
no fewer than the standard number of seats. The seat tracks are
considered part of the seat and may be substituted. Alternate seat
tracks may serve no other purpose. The standard seat belts may be
removed to facilitate the installation of alternate restraints complying
with safety requirements.




nalbar

[woodrufj]

Dig a little deeper in the rule book, I think there's a minimum seat weight in xSP these days. It might include the rails though, which will put any set over a minimum (some bolt the seat directly to the floor).

Jay W

[cpasti]

Are you going to run that harness on the street or is this not your daily driver?

[JDMStanced]

Are you going to run that harness on the street or is this not your daily driver?

i highly likely to use the racing harness on street with my stock seat.
I may be use the harness once i get a bucket seat or something.

[JDMStanced]

I forgot to ask, Do the racing seats and harnesses have to be FIA certified?

[Steve35]

I forgot to ask, Do the racing seats and harnesses have to be FIA certified?

No not for SCCA autocross.

[JDMStanced]

i'm looking at NRG harness bar for my 350z now. It's the cheapest one that i could find. The reason NRG bars are cheap is because they are made of aluminum. Would you say yes to aluminum harness bar? Track guys are telling me not to use them for track but dunno about autox and drift.
Also this bar satisfies the scca rule, right?

[dwkfym]

I would either..
1. not get a seat or harness, and stay in a more stock class
or
2. save up and get a proper 4 or 6 point roll bar with a proper harness bar, and only if I plan to go racing on the track someday.

A good compromise is to buy a lap belt out of a proper 5 or 6 point setup and bolt it into your stock mounting holes, and use it in conjunction with your stock seat belt.

Aluminum, depending on the type and wall thickness, can be just as strong as a steel tube. However, I can't tell how thick the wall is, and it is welded. Welded aluminum for structural applications is not that great. Furthermore, it looks bent. Bending is also no kosher for aluminum. Also, judging from the looks, it looks like low-grade aluminum.

AND in addition to that, even if it was made of proper, structural aluminum using proper manufacturing practices (which would drive up the cost way over 3 times the msrp), that bar is also going to fatigue in a year or so. If its mounted in a location where it will do any good, its going to be flexing regularly. Regular flexing is no good for aluminum. When you make stuff out of aluminum, you really have to overengineer it so it has insane resistance to deflection and even then its never as good as steel.

When you crash, you're gonna load that thing up to 5000lbs depending on how heavy you are and how you crash.
I wouldn't get that bar. Your life depends on it.

[dwkfym]

Also, would you trust your life to a company that can't make a proper sentence?

"NRG Innovations, created 2003 by a group of enthusiasts highly in-tune with the performance aftermarket. NRG Innovations has caught the attention of racers throughout the import and domestic markets. Whatever the event: drag racing, circuit, autocross, time-attacks, rally and whatever the style: Drag, drift, grip, or tarmac."

Its certainly caught my attention alright.

[Dov]

Also, would you trust your life to a company that can't make a proper sentence?

"NRG Innovations, created 2003 by a group of enthusiasts highly in-tune with the performance aftermarket. NRG Innovations has caught the attention of racers throughout the import and domestic markets. Whatever the event: drag racing, circuit, autocross, time-attacks, rally and whatever the style: Drag, drift, grip, or tarmac."

Its certainly caught my attention alright.

I know a lot of highly intelligent people that can't put a sentence together.... just saying.

[dwkfym]

I'm pretty stupid to begin with and I can't put a sentence together. That aside, if you were in a business venture of that caliber (distributing your parts nationwide) you'd think you get someone who can write. I too can think of people who aren't great communicators who put great products together, however.

[JDMStanced]

ANYWAYS, LOL, i'm not able to find information on harness bar rule on the rule book.
If i can't find any low price aftermarket harness bars, then i'll have to get a customized one.Can you provide me with information on how they should be made other than bolting in the each end of the bar to the stock belt location, B pillar?

[JDMStanced]

This is what i received from a guy who has done this job before:
Okay. Yes I built that harness bar a couple years ago, and he also used his car for SCCA autocross. The problem is that your seat height will most likely be different since you will be changing seats and brackets. So the holes in the seat backs where the seat belts run through might be higher or lower then the harness bar when you do change the seats. So I will have to make the harness bar adjustable. SCCA will not allow you to fasten your seat belts to a harness bar in a downward position. So the harness bar will have to be level or higher then the holes in the seat backs.

I can build you a seat belt harness bar just like the one I showed you, only I will make the supporting legs adjustable so you can make then longer in case you need to extend the harness bar up. For something like this, your looking at around $290 installed. I will have to use small heim joints in the supporting legs for adjustability, so you can move it and it will be strong. Good thing about this is you will have the ability to move the harness bar around height wise, and change the angle of the top tube. It will be a very strong and sturdy harness bar, and it will look very clean! I'll 100% TIG weld the entire thing, and I will be using 1.5" DOM tubing for the main bar. All materials will be that of SCCA recommended materials.

go for it?

[kjchristopher]

ANYWAYS, LOL, i'm not able to find information on harness bar rule on the rule book.
If i can't find any low price aftermarket harness bars, then i'll have to get a customized one.Can you provide me with information on how they should be made other than bolting in the each end of the bar to the stock belt location, B pillar?

Why do you think you need one? Most people prefer just a lap belt.

[JDMStanced]

idk...i prefer my whole body to be planted in the seat.

[dwkfym]

I'd just follow KJ's advice. For now, lap belt + 3point should suffice. If you really want more support, then get a seat with said lap belt, don't worry about the other devices for now.