Project: Mothra

Mike@Blackline · 04-16-2010, 03:26 PM

Quote:

Originally Posted by Endgame

I assume the TS intakes will be similar to the Amuse intakes that appear to be more a short ram intake with no heat sheilds. At least, that is how the G37s look. That said, I would be very interested to see how they perform as they will be sucking in a bunch of hot air with the hood closed....

the ambient air temperature in an engine bay when youre driving is about the same as the standing air temperature outside the car for most vehicles, just a thought

Modshack · 04-16-2010, 04:49 PM

Quote:

Originally Posted by Mike@Blackline

the ambient air temperature in an engine bay when youre driving is about the same as the standing air temperature outside the car for most vehicles, just a thought

That would be nice, but my findings (on another motor) don't quite indicate that... Different set-up but many similarities. This is an Audi TT with the temps measured at the mouth of the CAI inlet.

hot differential: No extra front ventilation
cold differential: ventilation similar to my Fang Vents run to the CAI inlet
Trim: Removing the rear gasket between the hood and firewall to promote airflow through there..

35 minute Test run from start, through a little traffic, some country roads, then traffic and 5 minutes idle in the driveway. These are the temperature differentials from Ambient (70 degrees on the day of the tests). Temperature dattalogger sampling once per minute.

The fact that we can only get IAT's down to within 7-10 degrees of ambient on the 370, no matter what the intake or feed system, would indicate that heat in the engine bay is a factor, even underway...You just have to deal with it as the IAT sensor does..Remember, the engine is running ap 180-190 degrees (Coolant system regulated) Not all that heat is expelled at speed..

Pull that rubber trim off to promote ventilation through the rear of the engine bay results in some nice temp improvements as you can see!

dalparadise · 04-16-2010, 08:14 PM

Quote:

Originally Posted by Modshack

That would be nice, but my findings (on another motor) don't quite indicate that... Different set-up but many similarities. This is an Audi TT with the temps measured at the mouth of the CAI inlet.

hot differential: No extra front ventilation
cold differential: ventilation similar to my Fang Vents run to the CAI inlet
Trim: Removing the rear gasket between the hood and firewall to promote airflow through there..

35 minute Test run from start, through a little traffic, some country roads, then traffic and 5 minutes idle in the driveway. These are the temperature differentials from Ambient (70 degrees on the day of the tests). Temperature dattalogger sampling once per minute.

The fact that we can only get IAT's down to within 7-10 degrees of ambient on the 370, no matter what the intake or feed system, would indicate that heat in the engine bay is a factor, even underway...You just have to deal with it as the IAT sensor does..Remember, the engine is running ap 180-190 degrees (Coolant system regulated) Not all that heat is expelled at speed..

Pull that rubber trim off to promote ventilation through the rear of the engine bay results in some nice temp improvements as you can see!

Interesting. Can you show me what trim piece you are talking about?

Modshack · 04-17-2010, 09:19 AM

Quote:

Originally Posted by dalparadise

Interesting. Can you show me what trim piece you are talking about?

Pic below... The base of the windshield is a high pressure area...removing the gasket allows air to be drawn into the engine bay. You won't see a decrease in actual engine temps, but you will in engine BAY temps, which is good. I've measured this on several cars (Audi TT and Corvette)and found about 18 degrees to be the difference. I need to do it on the Z. here's the Audi chart:

Remove these to let some air in! If you really want to ventilate, pull the plastic cover over the strut bar bolts at the firewall

NISSNISS370Z · 04-17-2010, 01:31 PM

Quote:

Originally Posted by Modshack

Pic below... The base of the windshield is a high pressure area...removing the gasket allows air to be drawn into the engine bay. You won't see a decrease in actual engine temps, but you will in engine BAY temps, which is good. I've measured this on several cars (Audi TT and Corvette)and found about 18 degrees to be the difference. I need to do it on the Z. here's the Audi chart:

Remove these to let some air in! If you really want to ventilate, pull the plastic cover over the strut bar bolts at the firewall

sometimes it's the simplest things that can make a difference...

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