Quick question: belt harness mounting points - FFCars.com : Factory Five Racing Discussion Forum
 
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post #1 of 11 (permalink) Old 07-14-2019, 06:45 PM Thread Starter
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Quick question: belt harness mounting points

How tight do you secure the lap belt and submarine mounting points? All the way tight or just tight enough to allow some "swivel" at the mount point?


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post #2 of 11 (permalink) Old 07-14-2019, 09:42 PM
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I leave the the lap belt bolts just loose enough that the belt can still swivel. The submarine belt tight, oriented the proper direction. Don't recall seeing this in the directions or ever asked before. Curious if others do the same thing.


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post #3 of 11 (permalink) Old 07-14-2019, 09:57 PM Thread Starter
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Thanks. I figured just enough give for a swivel would be fine with the nylock.

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post #4 of 11 (permalink) Old 07-14-2019, 10:42 PM Thread Starter
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As I was tightening, I ran into an issue with the inside bolts. This is a Mk4 where you have the bolt head in the transmission tunnel and tighten the nut to pull the aluminum in. Well, with the insulation, carpet, and aluminum, I can't tightening things enough to fully engaged the nylock. I'm wondering if I should try turning the nut around nylock first or simply remove the washer that is against the belt mount....

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First start: 6/22/19
Drive train: Levy 408w w/carb, TKO600, Moser 8.8 with 3.55s and GT rear brakes
Paint Plan: Under consideration (probably dark grey/titanium with silver stripes)
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post #5 of 11 (permalink) Old 07-15-2019, 01:13 AM
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I tried that once. First I realized I needed to run the nut on and off the bolt several times in normal orientation to kind of cut threads into the nylon. W/o doing that, the nylon started threading any ole place which didn't line up once the bolt got to the steel threads in the nut portion. Then I got it to work and had it assembled, but realized there would be a lot of load trying to crush the nylon section of the nut which obviously isn't designed for that. The option I finally ended up w/ was experimenting w/ the next size longer bolt and a couple of extra washers right under it's head to come up w/ a custom length. Another way to go would be the next size longer bolt and cutting some off the threaded end to get a custom length. There is always way more threads than you need.

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post #6 of 11 (permalink) Old 07-15-2019, 10:05 AM
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1/4" Longer bolt.

You're welcome

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post #7 of 11 (permalink) Old 07-15-2019, 01:16 PM
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Another option, to allow for both secure mounting as well as some compliance (and ease of removal down the road), is mounting the lap and anti-sub belts with forged eye-bolts and clip-in belts. You can buy the clips and route the belt webbing through them, then attach the eye-bolts in the mounting tabs that are welded to the frame. I’ve used them in a couple different rally cars as well as my Daytona and they work great.

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post #8 of 11 (permalink) Old 07-15-2019, 04:39 PM
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Quote:
Originally Posted by JKleiner View Post
1/4" Longer bolt.

You're welcome

Jeff
Wait, wait, that's too simple, too much common sense.
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post #9 of 11 (permalink) Old 07-15-2019, 05:05 PM Thread Starter
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I just wish I had a place handy that keeps a good stock of bolts and screws. The local stores are extremely hit and miss about having what I need. My install will work safely for now. I'll switch to a longer bolt some time after the paint is done.

-Nathan

MKIV Complete Kit(order placed: 4/5/16; order completion: 5/14/16; delivered: 5/24/16): 3-link, PC, cutouts, vintage gauges, glove-box dash, chrome roll bars; 17" wheels, B/T leather seats, wind wings/visors sourced during separate 50/50 sale; side pipes and headers sourced through Gan-n
First start: 6/22/19
Drive train: Levy 408w w/carb, TKO600, Moser 8.8 with 3.55s and GT rear brakes
Paint Plan: Under consideration (probably dark grey/titanium with silver stripes)
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post #10 of 11 (permalink) Old 07-16-2019, 12:42 AM
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Quote:
Originally Posted by silver_pilate View Post
I just wish I had a place handy that keeps a good stock of bolts and screws. The local stores are extremely hit and miss about having what I need. My install will work safely for now. I'll switch to a longer bolt some time after the paint is done.

-Nathan
Tractor Supply is great for bolts. If you have one around.

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post #11 of 11 (permalink) Old 07-16-2019, 02:56 AM
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Rallygorgo I'm not sure what you mean, do you happen to have a pic you could upload? The idea sounds awesome!
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