Cheap Inlet Manifold
In that excellent book Tuning the A-Series Engine by David Vizard
he has a long discussion about ways to improve the inlet flow of the A-Series Engine. He tests many different manifolds, providing detailed analysis.It turns out that the Manifold on the metro is pretty good, not the best but a big step up from the standard Mini manaifld. In fact the MG Metro manifold can be used unmodified, as it's seperate from the Exhaust manifold.
My manifold was from a standard metro, this is cast as a single unit so in order for me to use it, I've had to cut it off. It's a bit of a fiddly job a combination of grinder and hacksaw did the trick. So it doesn't interfere with the new LCB a certain amaint of tidying up is necessary to remove the remains of the cast iron that joined the exhaust and inlet manifolds.
It is possible to use the exhaust manifold as well, it also flows pretty well. You would almost certainly need to seperate the exhaust manifold from another casting as I don't think it would be possible to seperate the manifolds without damaging one of them. One other advantage of using the Metro exhaust manifold is it can reduce noise
posted by Andy Tyrrell @ 5:13 PM
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