Advanced timing can cause that to happen
The turbocharger turbine housing and exhaust manifold on any state of the art high horsepower (per litre of displacement) diesel engine will glow red as it approaches full load condition.
The fuel mixtue has gone lean.
exhaust?
The exhaust gasses pass though there, and they're really hot.
Excessive high idle Excessive lean mixture.
I dirt track race and mine did it once it was because it was running to lean.
If it's glowing red you have a vaccum leak someplace, probably in the intake manifold or the engine is running lean on fuel or possibly too rich as the unburnt fuel is burning in the exhaust.
No but an engine running like that can damage the valves.
check the cad. converter ======================== That's normal if you dive the car "HARD" .. Turbo kicks in and lots of air/fuel => exhaust then too hot
The back of the turbo, is the turbine. It has the hot exhaust gases flowing thru it. The exhaust gases are 1000+ degrees f. and cause the steel to glow red/yellow when under load.
Normally a blocked catalytic converter or a blocked exhaust will cause that problem. Back pressure, means the gasses cannot escape. thus causing the manifolds to glow.
Red is considered a hot colour because the hot embers of a fire glow red.