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948 Manifold Mounting

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bberwick

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I'm trying to mount my manifolds onto my 948. When I got the engine back from the rebuilder, I got it with 2 H2 carbs, and the appropriate intake manifold. The one I have is pictured on page MA 45 (plate A 27) in the BMC Mechanical Parts List. It is the manifold designated 12G 583. In the picture there is also shown the Ferrule for the inlet port (12 G 297). Now here's the problem and my question. The ferrules fit nicely into the manifold, but they're too large for the inlet port. Are the ferrules supposed to slip inside the inlet port as well as the manifold itself? If so, is there a solution to the mismatched size short of reboring the inlet holes. I temporarily mounted the intake manifold with the ferrules butting up to the area around the inlet ports. I'm supposing tis is not the thing to do. Has anyone had this problem, too? Does anyone have a soultion?

Thanks,
Bob Berwick
 
Some heads from certain 1098s did not have the milling for the ferrules. This may be the case with some 948s.
I think the Morris Minor engines never had these millings but I am not positive.
So you may have a different engine or just a different head.
But if you take the carbs off, line up the bores of the intake with the bores in the head so they are a perfect match then tighten down the intake.
Now stick the carbs on.
Wait, didn't the 948 intake bolt to the exhaust manifold too? That should keep everything lined up.
 
Bob, those "ferrules" are actually locating rings and are not used with all cylinder heads. Just install the manifold without them, and you will be fine.
Jeff
 
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