Austin 16 H.P. intake-to-exhaust bolts / set screws

[mixolydian]

Folks, I’d be grateful for any advice on sourcing the set screws that secure the intake manifold to the exhaust on the BS1 engine in a 1948 Austin 16.

These are the four that run vertically down through the intake (their collar passing through the casting) and into the exhaust manifold (where they are threaded). They are located around the ‘hot spot’ device that’s mounted into the top mating flange of the exhaust manifold.

I came unstuck when one sheared on removal, despite being cautious with it. The other three are okay. I wondered if (by some miracle) there might be somewhere that can provide them. Otherwise its measuring time and off to the machine shop…

Any advice gratefully received – many thanks in advance.

[John O Toole]

<p style=”text-align: center;”>Hi I think long bridge spares should have some</p>

[mixolydian]

Hello,

Thanks John and apologies for the late reply. I tried Longbridge but sadly to no avail.

However, I was able to find a suppler able to provide the right spec bolt.

For future reference I ordered four 5/16″ * 22 * 2 1/4″ BSF bolts (grade R) from Arun Fasteners. Note: that’s 22 threads per inch and these are bolts rather than set screws. They’re almost identical to what I removed and have worked a treat.

Link:
https://arunfasteners.co.uk/product/bsf-part-thread-bolts-grade-r-bsf-b/

Excellent service from Arun; dispatched very promptly, absurdly well packaged and exactly the right spec.

The manifolds, carb, linkages and fuel system are all back in place and working properly.

[Author]

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