Inner cill

[noostag]

Hi guys
was wondering how easy or difficult it is to source inner cills for early mk 1 stag
I managed to get outers but not having much luck with inners thanks for any help you can give
tommy

[new to this]

Hi guys
was wondering how easy or difficult it is to source inner cills for early mk 1 stag
I managed to get outers but not having much luck with inners thanks for any help you can give
tommy

When you say early mk1,is it the very early stag with a three peace sill arrangement,inner and middle part,rimmer sell the inner sill,dont think the middle part is a valuable, your have to make that part

Dave

[mole42]

It's often quite easy to make the repair sections for the inner sill, it usually only rots below the floor line.

Don't forget that the Stag has four sill panels - Outer, Inner and two internal reinforcement panels that add stiffness to the shell.

[edd]

It's often quite easy to make the repair sections for the inner sill, it usually only rots below the floor line.

Don't forget that the Stag has four sill panels - Outer, Inner and two internal reinforcement panels that add stiffness to the shell.

I have seen a two three but never a four

[mole42]

This image from the 1974 Parts Catalogue:
Stag Sills.jpg

[edd]

This image from the 1974 Parts Catalogue:
[ATTACH=CONFIG]38572[/ATTACH]

Wow I'm so glad mine was only two. That's some fabrication. Mine is a 73 and I think some early cars had that set up but nothing in the mk2 range thank heavens.

[edd]

Most common is this set up as shown in the rimmers catalog. It would be good if someone had dates of this drastic change.
image.jpg

[mole42]

I think the Rimmers illustration shows only those panels they actually sell.

Even the big saloons have a 3-part sill assembly and they have a roof to provide some structural integrity. The Stag, having no roof, needs extra strength in the sill area to compensate. The T-bar is only there to control scuttle shake. One area that is prone to weakness in the Stag and the big saloons is the junction between the rear body and the sill assembly. This is where the multiple layers of sill panel are most needed.

These cars were designed at an early stage of the integration of the chassis into the body assembly. They are not monocoques but rather have a defined chassis which is part of the body structure. The front cross members, the sill assembly and the rear rails all are part of this chassis which needs to be integral to preserve the structural strength.

[edd]

I think the Rimmers illustration shows only those panels they actually sell.

Even the big saloons have a 3-part sill assembly and they have a roof to provide some structural integrity. The Stag, having no roof, needs extra strength in the sill area to compensate. The T-bar is only there to control scuttle shake. One area that is prone to weakness in the Stag and the big saloons is the junction between the rear body and the sill assembly. This is where the multiple layers of sill panel are most needed.

These cars were designed at an early stage of the integration of the chassis into the body assembly. They are not monocoques but rather have a defined chassis which is part of the body structure. The front cross members, the sill assembly and the rear rails all are part of this chassis which needs to be integral to preserve the structural strength.

Maybe it's time you looked at my Edds stag project. I have totally rebuilt my car The early sills were ( fact ) replaced with the sills shown in the diagram. Very few 3 part sills I have witnessed on the forum. My new sills I fitted were a very heavy gauge and no doubt that was triumphs short cut to 1 lower overall weight 2 cut down on manufacturing doing away with two parts of the structure. However is does seem strange to do away with what looks like the forth bridge running through the sill but that was triumph idea not mine

[DJT]

The Stag only had 3-part sills during the early part of the production run and changed to 2-part quite soon. Not sure of the actual body number/date, but there weren't many with the 3-part sill structure.

[davidf]

My Triumph Parts manual dated April 1978 only shows the outer and inner, like the Rimmers diagram. Even thought most pages show all variants throughout the model life, this page doesn't. Also, the part numbers shown above for the internal parts are not listed in the index. So, even by 1978, Triumph no longer supplied these internal parts.

[new to this]

On my first stag, i replace the inner and outer sills,if you doing the repairs your self your know how long it takes to remover the outer sill,the inner sill is much harder to remove completely,plus the inner sill i fitted was not a great fit,

dave

[sunnystag]

Those middle sill (3rd panels) strengtheners certainly lasted until late 1970. Mine has a build date in Dec 1970 (registered Jan 71) and when I replaced the outer I found the strengthened inside.

[redstag]

No strengtheners in my car, a late '71 build.

Pete

[NickA]

I think the Rimmers illustration shows only those panels they actually sell.

Thought the Rimmers site uses the original BL Parts Catalog pictures as they hold the rights to use them?