Skid plate or no?
02-10-2009, 08:19 AM
#22
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Turbo blankets serve to keep heat in the turbine section which increases the overall efficiency which means most power and lower exhaust gas flow rates which means lower engine RPMs.
It may not make a huge difference but every little bit counts?
02-10-2009, 08:22 AM
#24
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That isn't what a turbo blanket is for.
Turbo blankets serve to keep heat in the turbine section which increases the overall efficiency which means most power and lower exhaust gas flow rates which means lower engine RPMs.
It may not make a huge difference but every little bit counts?
Turbo blankets serve to keep heat in the turbine section which increases the overall efficiency which means most power and lower exhaust gas flow rates which means lower engine RPMs.
It may not make a huge difference but every little bit counts?
02-10-2009, 08:32 AM
#25
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More heat means more energy. The working medium is the exhaust gases flowing through the turbine.
In an adiabatic turbine, Power=Mass flow*(basically change in energy). Adiabatic means basically that all of the energy in the working fluid is going into creating power.
The change in energy is the difference between the energy of the exhaust gases entering the turbine and the energy of the gases leaving the turbine. This is one reason wrapping exhaust manifolds is a good idea in addition to keeping under hood temperatures down.
But if the turbine is getting hot and air is blowing across the turbine, then the turbine is no longer adiabatic. This represents a loss. So keep the heat in the turbine. Don't give it up to the atmosphere, that is the whole point of a turbo anyway.
Granted, I don't know how much it would help but being as the turbo is under the car and air is blowing directly over the turbine, I would image a significant amount of heat is being removed.
02-10-2009, 08:34 AM
#26
I don't really know what the turbo blanket is for, but I would assume that it is an insulator for those running under hood turbo's. For guys with TN kits, to keep the heat from the engine bay. As far as exhaust gas heat goes, as it cools it expands, and therefore travels faster through the turbine. That's at least my impression of the whole thing. Maybe I'm wrong.
Either way I'm am not putting one on.
Either way I'm am not putting one on.
Last edited by BoostedProbe; 02-10-2009 at 08:55 AM.
02-10-2009, 08:43 AM
#28
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I did some googlin' and the blankets are intended to protect the engine bay from heat, not to keep heat in the turbo for efficiency. I still believe that's counter productive in a turbo application to trap heat in the turbo - you'd want it as cool as possible on the compressor side for lowest IAT. But that's just my .02
02-10-2009, 12:27 PM
#30
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No vibrating, turbo is isolated through flex pipe from the engine. There won't be any rattling, everything past the flex pipe is soilid and cannot be pushed over to touch any part of the car. I tried really hard. Turbo down pipe and beyond is on stock hangers so there won't be any problems there. This should give you a better idea:
I assume you haven't run it yet?
Just make sure you loctite the bolts to keep vibration from rattling the solid exhaust mounts loose.
Bottom line is, you're better off running the skid plate for safetys sake,
as long as it doesn't cause any interference/clearance issues.
Also you might want to avoid the vertical horseshoe/siphon loop between the turbo oil drain and the scavenge pump.
You may get turbo oil drainage/scavenge issues, and blue smoke/oil everywhere.
02-10-2009, 01:17 PM
#31
Ok, sounds reasonable.
I assume you haven't run it yet?
Just make sure you loctite the bolts to keep vibration from rattling the solid exhaust mounts loose.
Bottom line is, you're better off running the skid plate for safetys sake,
as long as it doesn't cause any interference/clearance issues.
Also you might want to avoid the vertical horseshoe/siphon loop between the turbo oil drain and the scavenge pump.
You may get turbo oil drainage/scavenge issues, and blue smoke/oil everywhere.
I assume you haven't run it yet?
Just make sure you loctite the bolts to keep vibration from rattling the solid exhaust mounts loose.
Bottom line is, you're better off running the skid plate for safetys sake,
as long as it doesn't cause any interference/clearance issues.
Also you might want to avoid the vertical horseshoe/siphon loop between the turbo oil drain and the scavenge pump.
You may get turbo oil drainage/scavenge issues, and blue smoke/oil everywhere.
The car has been runing, only idling I guess since it's on jacks. I though there would be a bit of vibration, but there really wasn't any. The scavenge system works great actually, it's been tested really well. I put a clear hose (temporary for test purposes) from the turbo to the scavenge pump just to see if there is any oil left behind. It works great, it sucks all the oil up without any problem whatsoever. I will put a small timer, so the scavenge pump runs for 10 seconds or so after the car has been turned off. This will completly eliminate any problems at startup, as the turbo will be drained of all the oil. So, no worries there.
Last edited by BoostedProbe; 02-10-2009 at 01:21 PM.
02-10-2009, 08:46 PM
#32
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you want cold air going into the engine and hot air coming out to spin the turbo more consistantly. hot air takes up more space meaning more volume of exhaust from the same combustion. isnt that right? Therefore either way the turbo blanket would be beneficial because it could keep heat out of the engine bay while maintaining hotter exhaust.
02-11-2009, 08:13 AM
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This is a good point though I'm not sure how hot before the carbon fiber will start breaking down. I would do the turbo blanket at least for this reason only.
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