Was wondering people's opinions on whether I should use a 2" or 3" belt harness for my car. Car will have both street and strip use and looking at probably doing a camlock type. The shoulder straps will mounted at the same point behind the driver/passenger (4 point type). I've never been belted into one so I have no idea what either fit like, if one is more cumbersome than the other, etc. I have a smaller body size (160 lbs) if that makes a difference. Thoughts?
2" or 3" Belt Harness??
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67Dart273
Well-Known Member
If I was in ANY sort of crash I'd much rather have 3" belts. In fact I run a set of like new, but outdated 3" in my Dart, which will probably never see the strip. I used to run 3" in the old Landcruiser (340 powered FJ-40) and I can tell you that severe "bouncing around in the woods" is a heck of a lot more comfortable with wider belts.
Use the wider belts, even if the SFI date is out. Your body and family will thank you, if something does happen. I've always run my outdated belts on my street cars after I changed them from my racecars.
Charrlie_S
Well-Known Member
I am not positive, so check the NHRA rules. I know if you are not required to run SFI belts, the date rule does not apply.
However I think if you upgrade to a roll bar/cage, then you must run SFI approved (3 inch) dated belts, even if the car does not require a cage, by ET.
However I think if you upgrade to a roll bar/cage, then you must run SFI approved (3 inch) dated belts, even if the car does not require a cage, by ET.
67Dart273
Well-Known Member
I'll be DAMMED you are correct
Section 20, page 40:
A quick-release, 3-inch driver restraint system, with a 2-inch crotch
strap, meeting SFI Spec 16.1 is mandatory in all cars in competition
required by the rules to have a roll bar or a roll cage. (Permitted in
all other classes.) A 3-inch SFI Spec 16.5 driver restraint system is
also acceptable wherever an SFI Spec 16.1 is mandatory or
permitted. Driver restraint system must be clearly labeled as
meeting SFI Spec 16.1 and be dated by manufacturer. See Class
Requirements for additional requirements for Top Fuel and Funny
Car. SFI Spec 16.1 Y-type belts prohibited. (In cases where the
class does not require an SFI 16.1 driver restraint system, the twoyear
recertification does not apply.) System must be updated at
two-year intervals from date of manufacture. All seat-belt and
shoulder harness hardware must be originally designed to be used
with each other and produced by the same manufacturer. For
harness installation, see illustration. Cars using OEM or OEM-type
seat may route crotch strap in front of seat instead of through seat.
Only units that release all five attachment points in one motion are
permitted. When arm restraints are worn with a restraint system
that utilizes a latch lever, a protective cover must be installed to
prevent arm restraint from accidentally releasing the latch lever.
Protective cover not required if system utilizes duck-bill latch
hardware. All harness sections must be mounted to the frame,
crossmember, or reinforced mounting, and installed to limit drivers
body travel both upward and forward. Seat belts may not be
wrapped around lower framerails. Under no circumstances are bolts
inserted through belt webbing permitted for mounting. Check
manufacturers instructions.
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