Advice on a Brigand

[Thor]

The really clever, but very unusual thing about the Brigand engine is the priority valve under the carburettor. I am not aware of the use of a priority valve in any other 'production' car, and this is probably because of maintenance difficulties. If the valve movement becomes sticky, then either the turbo can't pressurise the manifold, so no boosting occurs, or the low-load performance is ruined if the mixture is always forced to go via the turbo. Carburettors and things like priority valves are marvelous, elegant, mechanical solutions to the problem of mixture induction, but they wear and get dirty.

The modern solution, using fuel injection and variable vane turbos (probably 2 on a V8 rather than 1, possibly sequentially) would be much more reliable, but it is not cheap to build a custom made system like that.