[Healeys] BN2 Trans mounting

[Curtis Arndt]

Here are the Dowel Bolts properly attached. As you can see, the bolts are
"just" long enough to fit with a period correct thick spring washer.

Top right...
[image: scan0153.jpg]

Bottom left...
[image: scan0154.jpg]

On Sat, Jun 22, 2024 at 12:04 PM Curtis Arndt <cnaarndt at gmail.com> wrote:

> Michael,
>
> *<Looking at your auction picture of the throw out bearing carrier and all
> the fasteners I am now more confused than ever.>    *
> First, open up a Moss catalog and look at the diagram for "Clutch 100-4".
> This will answer a few of your questions.
>
> *Restorers Tip: The Moss catalog with its excellent exploded diagrams are
> an invaluable resource.*
>
> [image: image.png]
>
> *<The top two pins with the threaded ends are for the carrier, no?>*
> Yes, these are Moss part nos. 53, 54 & 55 and the ones I have are
> originals, i.e., they have 1/4" Whitworth [BSF] threads. The replacements
> that Moss sells have 1/4" UNF threads. They work fine, but you'll need to
> buy them as a set.
>
> *<Also, where do the four bronze bushing go?>*
> Back to the Moss catalog diagram, these are the four [4, no. 46] bushings
> for no. 42, the steel "SHAFT, clutch operating". I assumed this was
> obvious. These will need to be pressed into place by a competent
> mechanic or machine shop. The same with the first motion shaft "Oil Seal".
>
> *<The two bolts on the left side of the lineup of fasteners are the dowel
> bolts?>*
> Yes, but these are two modern UNF ones that I had modified. The shaft of
> the bolt was slightly too large, so I had to machine them to size
> to precisely fit the holes in the bell housing. They're not exactly like
> the originals but close enough. Besides, no one is beating down my door to
> buy this bell housing.
>
> *<Are there supposed to be two short bolts to go on the bottom so as to
> not interfere with the oil pan?*
> No, please read what I wrote... <The *top right* and the *bottom left
> bolts are special BSF "Dowel Bolts"* while the rest are 3/8" Whitworth
> [BSF] hex bolts of varying lengths.>
>
> See the photos I sent of the lip of the case. If you look closely at the
> top right/bottom left holes, you'll see a circular machined depression for
> the dowel bolt heads.
>
> Below are photos of original dowel bolts...
> [image: 100 dowel bolt copy.jpg]
> [image: part 23 006.jpg]
> The dowel bolts in my car were machined by Roger Moment off of two
> originals that I had.
> [image: IMG_4754.JPG]
> FYI, the remaining seven [7] BSF standard hex bolts secure the gearbox to
> the engine, however two [2] of these bolts are slightly longer [1/4" to
> 3/8"] to secure the starter.
>
> This should give you everything you'll need to know.
>
> Curt
>
>
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