GT Motorsports: 370Z Supercharger system development

LiquidZ · 10-08-2009, 08:50 AM

Quote:

Originally Posted by kannibul

OK. Thanks for sharing.

So, cars come with a turbo-brake on them now to prevent them from burning the oil in the bearings?

I mean, most oils start to have issues around 400F. Exhaust temps are what, 1300F....

You shut off the engine, you lose all oil pressure. What's feeding the bearings to your turbo, that's still spinning...?

Compare that to a belt driven supercharger...you shut off the engine, the supercharger stops spinning.

Turbo timers help prevent oil cooking issues with aftermarket turbos. Essentially, they allow your car to idle for a minute or less once you remove the key from the ignition. This keeps oil circulating through the engine and turbo to not only allow for any necessary lubrication of the spinning turbo, but to circle the oil throughout the engine to help cool it.

kannibul · 10-08-2009, 09:00 AM

Quote:

Originally Posted by LiquidZ

Turbo timers help prevent oil cooking issues with aftermarket turbos. Essentially, they allow your car to idle for a minute or less once you remove the key from the ignition. This keeps oil circulating through the engine and turbo to not only allow for any necessary lubrication of the spinning turbo, but to circle the oil throughout the engine to help cool it.

So is it something like an auxillary oil pump, or something else?

LiquidZ · 10-08-2009, 09:10 AM

Quote:

Originally Posted by kannibul

So is it something like an auxillary oil pump, or something else?

It is not an auxilliary pump. It is a small control module that is connected to your car's ECU that allows the car to run for a set amount of time once the key has been removed from the ignition.

RCZ · 10-08-2009, 03:13 PM

Quote:

Originally Posted by kannibul

So is it something like an auxillary oil pump, or something else?

No, they just literally keep the car turned on for maybe a minute or two after you remove the key and get out. Thats all they do.

You used to have to let turbos cool down by idling the car a little bit before shutting it off, but that is no longer necessary with today's turbos. Turbo timers really arent necessary nowadays, but some people will argue otherwise.

I think JoeD is laughing a bit because you are behind the times on your research..

JoeD · 10-08-2009, 03:36 PM

Quote:

Originally Posted by RCZ

You used to have to let turbos cool down by idling the car a little bit before shutting it off, but that is no longer necessary with today's turbos. Turbo timers really arent necessary nowadays, but some people will argue otherwise.

Exactly!

I was laughing more so because he brought up having to idle down as if it was an issue which needed to be bought up.

Turbo-timers are the most useless devices I can think of. Are you ever in that big of a hurry where you need to shut your car off and walk away immediately after a few hard, full-boost pulls? It's advised to "cool off" any car by idling after running it hard, not just turbocharged cars. Also, as mentioned above, coked bearings are a thing of the past. You have nothing to worry about with modern turbos, with advancements in oil to boot.

Here's a thought...how about you refrain from going WOT or running the car to above normal operating temps 2 minutes before you reach your destination? I was under the impression that this was common sense...

K...enough about this non-issue.

Modshack · 10-08-2009, 03:42 PM

Quote:

Originally Posted by JoeD

Exactly!

Turbo-timers are the most useless devices I can think of.

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