Caterham Hayabusa Manifold

[DaveK-S1]

Just had Alunox in wrexham build me a new manifold for my busa caterham , looks lovely

[DaveK-S1]

Yes there is a slide in panel that covers the opening its folded over the top chassis rail, and slides behind the skin at the base so its held in by the bonnet.

[DaveK-S1]

Sam

About 450kgs and i'm hoping 220bhp from a 1585cc busa, the engines only got a flowed head and kent cams so quite mild. Its not been dyno'd yet.

The busa cars are pretty quick even against the 280bhp duratecs in the mag 7 races.

[DaveK-S1]

Above 415kgs is as light as you can go without taking interior panels out of the chassis, you can get the engine up to 250bhp as well but they are not the best for longevity at that power Nat asp when used for circuit racing, but ideal for hillclimbing, However turbo or supercharged busa are over 300 bhp with relative ease.

The green car belongs to Doug Newman who pioneered the concept of a bike engine in a 7, first with the blackbird , then latterly the busa.

I've had a previous 7 that weighed 470kgs and had a 275bhp alloy blocked vx engine, yet the 1400cc busa powered cars were quicker on the hillclimbs i do, as ultimately they were more nimble.

Personally for circuit racing i'd stick with a duratec / sadev seq combo

[DaveK-S1]

Longevity,and cost against time run, the busa has to be rebuilt every year, yet the duratecs just seem to run on each year.
In the mag 7 40 min races we are running a 235bhp engine against the 285 + duratecs and the times are very similar.