holding your engine at full throttle for long periods?

[luke85]

What problems are there with holding a tuned turbocharged car at full throttle and high revs for quite a long time? There is a feature coming up where there is an empty runway and you just see how fast your car can go. Currently running 1.4 bar of boost with water injection and no knock but would this change after 20 seconds of full throttle? problems I see are:

Heatsoak in the intercooler/chargecooler

Overheating of the plugs - is this going to be a problem orare they straight up to temp when you come on boost?

piston cooling - I have no oil sprays, again do these get up to a temperature after a second or 2 or will they be creeping up the longer you spend at full throttle?


Any advive would be much appreciated, maybe its just me worrying because I never really need to spend more than 5 seconds at full throttle and Im fully expecting to melt something

To anyone who knows the engine, if it makes a difference:
low compression C20LET vauxhall engine
Single core chargecooler
Hybrid turbo
2D water injection
heat range 7 NGK irridium plugs
ported and polished head
4x470cc/min injectors
fuelling set by adjustable regulator and wideband to 11.5