speedwell a35 query

[homa]

I was aware that speedwell offered an exhaust center port casting
which bolted into the heat exchange for A35s with twin carb conversions (as pictured center)



but this picture below caught my eye, it doesnt look just like a plate but a whole bolt on runner,
am i looking at it wrong ?
could someone shed some light on it

[ivor badger 2]

It's because the inlet manifold/ centre exhaust section bolted to the rest of the exhaust manifold. So when you swap to the twin inlet manifold, there is no centre exhaust section. The kit probably predates the Mk1 Sprite, so no twin SU manifolds from BMC.

[Simon776]

It's not to replace an SU, the early A35s had a downdraft Zenith carb.

[In the shed]

Always interested in A35s. My last one would smoke it's tyres in 3rd and was a full race midget in disguise.

[homa]

when you remove the standard inlet you are left with a hole in the exhaust manifold which the kit provides a cover plate

the second picture looks like the branch has been replaced