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Old 04-04-2011, 10:00 PM   #1
scrmblr2
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Default harness mounting ?

So I got this scroth clubman harness, actually it willl be 2 shortly for driver and passenger.

Before I go too far...no I dont have a cage, no harness bar, i dis able my airbags, i have fixed back seats. This was a step in the right direction until I can go FULL cage in my sti.

So I am trying to deside how to mount my harness. I will be using the rear seat deck mounting points just like I have with my ralley 4 harness for the shoulder straps. I will be using eyebolts and backing plates to mount the sub straps....the question I am having is where to mount the lap belts. I will need to either order "dog bone" adapters an use the factory seatbelt mounting locations, or I was thinking about getting another set of eyebolts and mounting the lap belts directly behind the seat in the floor....

Opinions? Suggestions? I currently have sliders on both seats...not the best setup, but it is the way it needs to be for now. Car is rarely DD, mostly an auto x and track day toy at this point.

It looks like I would have room for the eyebolts...they would be within 6"or rear of seat...I just have to find flat floor space back there...i think it exists
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Old 04-04-2011, 10:50 PM   #2
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Just be aware that using the rear deck mounts is not a good idea since the belts are made to stretch like 20-30% - 30% of 5 feet is your head in the steering wheel
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Old 04-05-2011, 07:24 AM   #3
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As an instructor, I would NOT ride in your car if all you had were those harnesses. It's just a horrible setup, and definitely not the way harnesses should be mounted. Wait until you get a cage or rollbar. Or get a harness bar and use them for autox.
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Old 04-05-2011, 08:32 AM   #4
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^^What both of them said. Rear deck is not an acceptable place to mount shoulder belts. The only proper way to do it is with a cage that has an integrated harness bar to wrap the belts around. The only temporary solution I would trust is an autopower 4-pt. rollbar (or something similar) with welded in reinforcement plates at the attachment points.
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Old 04-05-2011, 09:14 AM   #5
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Yep, spend the $500 and get the 4pt Autopower roll bar if you're not going to do a full cage. Otherwise, stick with stock belts.
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Old 04-05-2011, 11:10 AM   #6
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I think I am gonna get the auto power bar for now..so what about the eye bolts for mounting the lap belts? I was reading grassroots Motorsports mag thus morning and I noticed a race car with eyebolts mounted behind the seat for lap belt attachment.
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Old 04-05-2011, 11:37 AM   #7
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I have my eye bolts bolted in the stock seat mounting holes for the lap belt. and then drilled holes in the floor for the sub belts.
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Old 04-05-2011, 01:33 PM   #8
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Quote:
Originally Posted by Rokkit View Post
I have my eye bolts bolted in the stock seat mounting holes for the lap belt. and then drilled holes in the floor for the sub belts.
Hmmm....is that a standard thread? That may be an even better solution.
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Old 04-05-2011, 01:39 PM   #9
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Some are, not sure which ones you have but I had the ones that came with my Sabelt belts.

threaded right in.

Just make sure to safety wire the clips after you clip them on. They are known to un-clip by mistake... which may not help in an accident
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Old 04-05-2011, 01:44 PM   #10
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Quote:
Originally Posted by Rokkit View Post
Some are, not sure which ones you have but I had the ones that came with my Sabelt belts.

threaded right in.

Just make sure to safety wire the clips after you clip them on. They are known to un-clip by mistake... which may not help in an accident
I could see that being an issue.....now I have to do some research on eyebolts and order my autopower bar.....and mount that all up nice an cozy...

I guess I should also ask....1.75"DOM or 2"ERW tubes in the hoop? Car weight dry is under 3500#'s..right. So 1.75" DOM tube is fine for the autopower cage?

Last edited by scrmblr2; 04-05-2011 at 01:50 PM.
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Old 04-05-2011, 02:17 PM   #11
Rokkit
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You're going to want the total weight of the car to factor in.. you, safety equipment, gas. "as raced"

Quote:
Vehicle weight DOM or ERW
Under 2000 lbs. 1.50" x .120
2001 - 3500 lbs. 1.75" x .120"
Over 3500 lbs. 2.00" x .120"
Your car is really over 3500 lbs? My RS with me in it was 2600

Time to add some weight to meet class spec
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Old 04-05-2011, 02:30 PM   #12
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So I was right in thinking thicker is better.....or maybe I need to start getting the car on a diet...and get some scales......and learn how to drive.....and all of this for track day safety, and structural rigidity....hmmm maybe I will be jumping up to Street Mod sooner than I though for autoX
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Old 04-05-2011, 02:33 PM   #13
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Quote:
Originally Posted by Rokkit View Post
You're going to want the total weight of the car to factor in.. you, safety equipment, gas. "as raced"



Your car is really over 3500 lbs? My RS with me in it was 2600

Time to add some weight to meet class spec
I guess that is what I get for having a FAT 05 sti
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