I thought it would be simple to find an outfit to sell me a seat of seat-belt bolts for a 74 Monaco, but I'm finding that its not so easy.
Each side of the car has six bolts. I attach a pic. I believe that:
--the two bolts circled in red should be shoulder bolts - to attach a single swivel to the body. Upper bolt is for the hanger for the tongue on the shoulder/lap belt. The lower bolt holds the retractor for the shoulder belt.
--the two two bolts circled in dark blue are not designed for a shoulder - they solidly attach a single attachment to the body. Bolt in the front is for the lap belt retractor for the front passenger. Similar for bolt in back for rear passenger.
--the two two bolts circled in greenish blue should be shoulder bolts - to attach two swivels to the body. Bolt in the front holds two belts: one for the middle passenger, one for the outside passenger (in which the shoulder/lap belt tongue connects). Similar for bolt in back for rear passengers.
My seat belts were missing some of their hardware (such as the upper swivel for the shoulder belt), and the belts were cut (maybe the police station cut them when junking the car), so I'm having a hard time figuring out what goes where. And I think Ma Mopar might be pulling a trick on me.
I found four different types of bolts (pics attached) in the car, some loose in the carpet.
From left to right, the markings on the head of the bolt
K20: length not including thickness of bolt head: 1.35". Thickness of shoulder: 0.0"
K13: 1.45", 0.4"
K12: 1.475", 0.575"
K15: 1.575", 0.725"
I'm thinking that K20 was used for the two dark blue bolts.
But I can't figure out where the other bolts go. So I write this just to see if anybody has any thoughts.
I found some shoulder bolts that don't specify their shoulder thickness:
Seat Belt Hardware
Shoulder Bolt
XV Motorsports - Products
and I found some mopar bolts with different shoulder thicknesses:
This ad
1970-74 Mopar Challenger Cuda HT Seat Belt Bolts Kit: eBay Motors (item 330443297622 end time Jun-29-10 18:36:42 PDT)
for
1970-74 Mopar Challenger Cuda HT Seat Belt Bolts Kit
has 3 different length shoulder bolts.
While this ad
70-74 Mopar Cuda Challenger HT Seat Belt Bolts Kit: eBay Motors (item 140420439902 end time Jun-30-10 23:40:42 PDT)
for supposedly the same thing
70-74 Mopar Cuda Challenger HT Seat Belt Bolts Kit
only has 2 different length shoulder bolts.
Here's an interesting page
I need BOLTS - B Body Mopar Forums
that talks about C10, C11, C12 bolts, and links to
An Error Has Occurred!
with a picture of them.
Anybody know about MOPAR 'C' vs 'K' shoulder bolts? Or why it would matter if I found a 'C' bolt with the correct length shoulder? Anybody know what the shoulder lengths should be on a 74 Monaco? I couldn't find anything in the shop manual.
As an interesting tidbit, I found that 7/16-20 seat belt bolts are the world standard - even for metric cars
volkswagon
TheSamba.com :: View topic - 68 Beetle Seatbelt Bolt Documentation
porsche
Seat Belt shoulder bolts - Pelican Parts Technical BBS
lotus
Sheared Shoulder Pt. Seat Belt Bolt - LotusTalk - The Lotus Cars Community
> Seat belt bolts are all SAE as they are spec'ed by the DOT.
Could someone(s) see how some of the bolts in their 74-ish Monaco are marked and report back? I think the front middle lap belt bolts will be visible just out in the air. If they're not, please let me know anyway because my understanding of how the belts are mounted is probably wrong. And I think the bolt highest on the B-pillar has a pretty trim cap on it that snaps off to reveal the bolt head, so that should be easy to check.
All thoughts and information appreciated.
thanks,
arthur