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The mkiv Supra Owners Club

Turbo "run on" how neccessary ?


herbiemercman

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Hi Guys, My brother has NA/TT and it has the factory fitted "Turbo Run On" fitted, i am sure most of you know that this was to protect the turbo bearing and oil overheating following a fast drive etc. So to my simple way of thinking why would this not be necessary on a modern day single turbo application when we go NA/T ?

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You mean a turbo timer? Pretty sure they weren't factory fitted on the Supra.

 

In any case, you don't need one, all it does is keep the engine running for a while when you get out, it allows the oil to circulate and cool the turbo as the engine continues to tick over. If you really want to you can just leave the car running, but not switching it off immediately after caning it will have the same effect.

 

I have to drive though the estate and then wait on a set of electric gates to open before I'm home so I've never needed to use mine.

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Turbo Timers are horrible, IMO.

 

You are better just taking the last 2-3 miles of your journey at a normal, slower pace.

 

Having a stinking hot turbo then just letting it idle for a bit can cause carbonisation on the oil paths in the turbo (so i've read, could be wrong?)

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