GT Motorsports: 370Z Supercharger system development

kannibul · 10-08-2009, 08:02 AM

Quote:

Originally Posted by JoeD

False.

Explain?

shumby · 10-08-2009, 08:03 AM

Sam updates?

kannibul · 10-08-2009, 08:06 AM

Quote:

Originally Posted by JoeD

I can't quite put my finger on why, but I LOLd while reading this. Seriously.

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.

shumby · 10-08-2009, 08:08 AM

sam updates?

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?

Lug · 10-08-2009, 09:01 AM

Quote:

Originally Posted by kannibul

I agree, and, there's also the difference in the torque/hp curves. turbo's will look better for peak power, but average power across teh band, S/C is better IMO - at least...the right kind of S/C. In addition, as far as I understand it, a turbo can drain low-end torque/power until the turbo's spin up. Might not be much of an issue...but if you drive your car with the engine mostly under 3K RPM, and occasionally get above 5K RPM, a supercharger is the better option, IMO.

Quote:

Originally Posted by JoeD

False.

Quote:

Originally Posted by kannibul

Explain?

Actually the correct answer is.......

Depends on the type of SC.

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.

shumby · 10-08-2009, 09:11 AM

why not start a separate thread to talk about S/C and how the work compared to turbo's this is a thread for GTM's SC.

kannibul · 10-08-2009, 09:53 AM

Quote:

Originally Posted by shumby

why not start a separate thread to talk about S/C and how the work compared to turbo's this is a thread for GTM's SC.

How about you just skip over the unrelated comments and read updates when they happen?

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.

G37Sam · 10-08-2009, 04:02 PM

They're not THAT useless, it's like how your windows have a module to automatically lift them all the way etc.. I'm sure someone dishing out 8k on TT kit wouldn't mind adding another 100 bux for a timer

Zguy · 10-08-2009, 04:04 PM

Quote:

Originally Posted by shumby

why not start a separate thread to talk about S/C and how the work compared to turbo's this is a thread for GTM's SC.

+1 we want updates from GTM not someone argueing about Turbo timers....
A turbo timer has absolutely nothing to do with a SC setup..... go ask in the GTM TT thread for that garbage....

10-08-2009, 08:03 AM	#257 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 45 Posts: 6,288 Drives: your sister Rep Power: 237	Sam updates? __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

10-08-2009, 08:08 AM	#259 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 45 Posts: 6,288 Drives: your sister Rep Power: 237	sam updates? __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

10-08-2009, 09:11 AM	#264 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 45 Posts: 6,288 Drives: your sister Rep Power: 237	why not start a separate thread to talk about S/C and how the work compared to turbo's this is a thread for GTM's SC. __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

10-08-2009, 04:02 PM	#269 (permalink)
G37Sam A True Z Fanatic Join Date: Dec 2008 Location: Dubai, UAE Posts: 1,507 Drives: RB'd G37 Rep Power: 21	They're not THAT useless, it's like how your windows have a module to automatically lift them all the way etc.. I'm sure someone dishing out 8k on TT kit wouldn't mind adding another 100 bux for a timer __________________ '14 Viper GTS '08 RB'd G37S - Sold

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