MKI / MKII S type 240 340 & Daimler 1955 - 1967

Mounting for 3 point seatbelt in Jaguar mk 2 when and where?

Thread Tools
 
Search this Thread
 
Old Mar 13, 2024 | 11:37 AM
  #1  
hakke45's Avatar
Thread Starter
|
Junior Member
Joined: Jul 2017
Posts: 10
Likes: 0
From: Linköping
Default Mounting for 3 point seatbelt in Jaguar mk 2 when and where?

I am looking for a missing lower mounting point on my Mk 2(VN 178310 DN-june 62). I have read posts about it but not found any pictures of the lower point. It is said that mine should have it but it is not there. It is also said that there should be a mounting point on the floor inside the B-pillar with an eyebolt? But was that not for a special brand of seatbelts ? I am looking for pictures of a B-pillar where I can see where the lower mounting point should be.


 
Reply
Old Mar 13, 2024 | 02:38 PM
  #2  
Glyn M Ruck's Avatar
Veteran Member
Joined: Jul 2012
Posts: 5,546
Likes: 1,493
From: Llandudno, Cape Town, South Africa
Default

Should be top half of B Pillar, Bottom of B pillar & either side of the tunnel. Lift carpet on lower sill & you might find them.
 
Reply
Old Mar 13, 2024 | 04:52 PM
  #3  
Jose's Avatar
Veteran Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2007
Posts: 9,137
Likes: 2,659
From: Florida
Default

the floor eyebolt is for seatbelts that use the "Sister Hook" attachment.

These eyebolts or "anchors" are still available and then you order seatbelts with Sister Hooks.
 
Reply
Old Mar 13, 2024 | 05:25 PM
  #4  
Glyn M Ruck's Avatar
Veteran Member
Joined: Jul 2012
Posts: 5,546
Likes: 1,493
From: Llandudno, Cape Town, South Africa
Default

Here you go ~ Covers saloons including Mk2 ~ you can blow them up & read clearly. Click twice for full size.

https://www.jag-lovers.org/saloons/belts/
 
Reply
Old Mar 13, 2024 | 06:02 PM
  #5  
Cass3958's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2019
Posts: 1,598
Likes: 1,224
From: Torquay Devon England
Default

This is the best picture I have of the seat belt mounting points on my S Type and they should ne the same if fitted to your Mk2 shell. The mounting points are threaded holes in the floor which could be filled with a rubber bung if they have never been used before and the upper point is behind the "B" pillar cover. The three points are circled in black. On the floor they have the eye bolts in place.

 
Reply
Old Mar 14, 2024 | 12:53 PM
  #6  
Peter3442's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2020
Posts: 2,285
Likes: 1,458
From: Oxford, UK
Default

I checked the on my 1963 Mk2 today. The mounting points are much as on Cass's photo. Those on the floor might be 3 inches further to the rear of the car relative to Cass's S type.
 
Reply
Old Mar 14, 2024 | 01:24 PM
  #7  
Glyn M Ruck's Avatar
Veteran Member
Joined: Jul 2012
Posts: 5,546
Likes: 1,493
From: Llandudno, Cape Town, South Africa
Default

Separate seats with thick backrests vs S Types more bench like arrangement & thinner backrests in the S Type to create more rear legroom.
 

Last edited by Glyn M Ruck; Mar 14, 2024 at 01:27 PM.
Reply
Old Mar 14, 2024 | 01:52 PM
  #8  
Glyn M Ruck's Avatar
Veteran Member
Joined: Jul 2012
Posts: 5,546
Likes: 1,493
From: Llandudno, Cape Town, South Africa
Default S Type development

"The front seats had thinner backrests than the Mk 2 type, which provided a little bit more legroom for rear passengers".
Credit: James Taylor
 
Reply
Old Apr 25, 2024 | 05:40 AM
  #9  
hakke45's Avatar
Thread Starter
|
Junior Member
Joined: Jul 2017
Posts: 10
Likes: 0
From: Linköping
Default Collar at the B-post

Should this collar fit in the hole.The hole on the wooden seems to be a little bit too small. And as i understand it it possible to mount the inertia reel on the b post using a reinforcement plate? Would like a picture of how to mount the inertia reel and securing the lose end of the belt


 
Reply
Old Apr 25, 2024 | 07:34 AM
  #10  
Peter3442's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2020
Posts: 2,285
Likes: 1,458
From: Oxford, UK
Default

It's a long time since we went through this process. I think that, in the belts we used, the narrow end of the stepped bush (or a second narrower bush) passed through the wood. I can't recall if it was from outside to in or the opposite or how tight it was. It kept the end eye of the belt nicely raised from the veneer to avoid damage and there was no load on the wood - there might have been a couple of extra rings included in the kit.

As I wrote before, we bolted a steel plate, probably something like 12 gauge, to the bottom of the B-post. We placed the bolts well apart and used extra large washers on the inside of the post. There's access to the inside of the post via various holes.

Sorry, I'm not very precise, but this is from almost 50 years ago, my car is dismantled, and all the components are 'buried' in my parts store. By the way, the system worked very well in that it saved me from injury (or worse) when my car landed on its side in a field a couple of metres below the road. (The other learning point was don't assume that, just because it's pitch dark on a country lane, other people will bother to turn their lights on).
 
Reply
Old Apr 25, 2024 | 07:42 AM
  #11  
hakke45's Avatar
Thread Starter
|
Junior Member
Joined: Jul 2017
Posts: 10
Likes: 0
From: Linköping
Default

Thanks for the answer. I have ordered plates to put insida the pillar.But i will have to make ha hole for the bolt holding the inertia reel.
 
Reply
Old Apr 25, 2024 | 08:01 AM
  #12  
Peter3442's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2020
Posts: 2,285
Likes: 1,458
From: Oxford, UK
Default

I'm not sure, but I think we bolted the the plate to the B-post and inertia reel to the plate. That allowed us to position the reel so it cleared the seats - it was a bit complicated as the original Reuter recliners are wide and the box of the inertia reel was big. With XJ seats, the positioning should be easier. Looking at the B-post now, there seem to be three holes that are not original and are probably what we made for fitting the belts.
 
Reply
Old Apr 25, 2024 | 11:37 AM
  #13  
Cass3958's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2019
Posts: 1,598
Likes: 1,224
From: Torquay Devon England
Default

I have posted this before but here are the photos again. To mount the inertia reel it has to sit on top of the sill adjacent to the "B" pillar to allow the front seat to still slide front to back. I saw a Mk2 at a show with factory fitted inertia reels which sat on a plate mounted on the sill. I copied the idea and made my own plates. The plate is bolted to the floor via the factory fitted seat belt hole shown in the photo at post #5. In my view if you bolted the seat belt mount to the bottom of the "B" pillar there was be limited strength at this point for safety. Jaguar reinforced the seat belt mounts on the top of the "B" pillar and on the floor but unless you add something the metal at the base of the "B" pillar is too thin. My plate has a bolt at the top which goes into the "B" pillar but this is just to hold it tight against the "B" pillar and the strength for the mounting is through the eye bolt on the floor.







 
Reply
Old Apr 25, 2024 | 12:31 PM
  #14  
Glyn M Ruck's Avatar
Veteran Member
Joined: Jul 2012
Posts: 5,546
Likes: 1,493
From: Llandudno, Cape Town, South Africa
Default

That looks right. You are still using the strengthened floor mount for the belt and the bracket merely holds the winding up mechanism. The other strengthened point is up the B pillar above the shoulder.
 

Last edited by Glyn M Ruck; Apr 25, 2024 at 12:50 PM.
Reply
Old Apr 25, 2024 | 12:47 PM
  #15  
Glyn M Ruck's Avatar
Veteran Member
Joined: Jul 2012
Posts: 5,546
Likes: 1,493
From: Llandudno, Cape Town, South Africa
Default

Refresh page.
 
Reply
Old Apr 25, 2024 | 01:11 PM
  #16  
Glyn M Ruck's Avatar
Veteran Member
Joined: Jul 2012
Posts: 5,546
Likes: 1,493
From: Llandudno, Cape Town, South Africa
Default

Does the inertia part work OK or what Britax call "Auto-Lok"?
 
Reply
Old Apr 25, 2024 | 01:12 PM
  #17  
Peter3442's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2020
Posts: 2,285
Likes: 1,458
From: Oxford, UK
Default

I don't have anything against Cass's method. However, stating the B-pillar steel is too thin doesn't seem reasonable to me for a few reasons. First, it's the same thickness sheet steel as the rest of the car. Second, the potential loads going into it are close to parallel with the panel, which is the direction in which it has both the greatest stiffness and strength. In addition, so long as the belt is mounted via an additional sufficiently large and thick panel (around 150x150x3 mm), the load is being distributed over a good height of the B-post. The reinforcing panel that we used in my car was several times larger and somewhat thicker than those used by the factory in the floor and the rear wheel arch.
 
Reply
Old Apr 25, 2024 | 02:16 PM
  #18  
Glyn M Ruck's Avatar
Veteran Member
Joined: Jul 2012
Posts: 5,546
Likes: 1,493
From: Llandudno, Cape Town, South Africa
Default


 
Reply
Old Apr 25, 2024 | 02:26 PM
  #19  
Cass3958's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2019
Posts: 1,598
Likes: 1,224
From: Torquay Devon England
Default

Originally Posted by Peter3442
I don't have anything against Cass's method. However, stating the B-pillar steel is too thin doesn't seem reasonable to me for a few reasons. First, it's the same thickness sheet steel as the rest of the car. Second, the potential loads going into it are close to parallel with the panel, which is the direction in which it has both the greatest stiffness and strength. In addition, so long as the belt is mounted via an additional sufficiently large and thick panel (around 150x150x3 mm), the load is being distributed over a good height of the B-post. The reinforcing panel that we used in my car was several times larger and somewhat thicker than those used by the factory in the floor and the rear wheel arch.
I totally agree with what you are saying Pete as long as the "B" pillar is suitably strengthened as it has been at the top where the seatbelt securing point is. If though the Inertia reel is just bolted through the thin material that the "B" pillar is made from, there is always the risk of the bolts just tearing out. That said if you get to the point where the forces in a crash are great enough to rip the seat belt from its mount as an ex Police officer I would not want to be the one going to their next of kins house to tell them the bad news.
 
Reply
Old Apr 25, 2024 | 03:31 PM
  #20  
Peter3442's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2020
Posts: 2,285
Likes: 1,458
From: Oxford, UK
Default

Rob, The key is to spread the load as wide as possible and take the load out as close to parallel to the sheet metal as you can. In your design, which I'm confident is sound, the first point on the body to carry load will be the bottom of the B-pillar simply because that route is the stiffest. Remember that the Pressed Steel Company (not that I think their structural design is consistently good) intended the bolt in the floor to carry load from the lap belt, a load which will act closer horizontal towards the front of the car, more parallel to the floor rather than vertically up.

If you think of a weight hanging from the column of a T, it works if the top bar is a deep beam, but if it's thin sheet, it sags. The column is what's called a zero member as it's not much use for carrying load. To support a load the arms of the T have to be swept up to form a Y, the column can carry load even if the arms of the Y are flimsy.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JimmyKat
MKI / MKII S type 240 340 & Daimler
71
Jun 28, 2024 03:09 PM
wolvesfan
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
6
May 19, 2023 04:09 PM
sanchez
XJ40 ( XJ81 )
6
Jul 18, 2019 12:48 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 03:50 AM.