heat from the Engine Compartment After Stopping
07-21-2013, 11:36 PM
#16
Drifting
07-21-2013, 11:42 PM
#17
Rennlist Member
Actually, I turn on the garage heat extractor and use a fan to blow the heat out the back of the car. I also remove the road bugs and bird dropping before putting her to bed. lol....
07-22-2013, 12:14 AM
#18
Racer
07-22-2013, 09:18 AM
#20
Rennlist Member
I always pop the engine lid after a drive to assist in the heat rising up and out of the engine bay. (removed the light bulb from the hatch so it doesn't cause any battery drain)
As others have mentioned, the close combination of the motor/cats/mufflers makes for quite a bit of heat compared to a usual front engined cars configuration.
As others have mentioned, the close combination of the motor/cats/mufflers makes for quite a bit of heat compared to a usual front engined cars configuration.
07-22-2013, 10:12 AM
#21
Rennlist Member
I always pop the engine lid after a drive to assist in the heat rising up and out of the engine bay. (removed the light bulb from the hatch so it doesn't cause any battery drain)
As others have mentioned, the close combination of the motor/cats/mufflers makes for quite a bit of heat compared to a usual front engined cars configuration.
As others have mentioned, the close combination of the motor/cats/mufflers makes for quite a bit of heat compared to a usual front engined cars configuration.
If the ignition key is removed, loads which are switched on or are in standby mode (such as the luggage compartment light, interior light and radio) are automatically switched off after approx. 2 hours.
If you don't want to wait 2 hours, open the compartment and then lock the car with the remote - light goes out in about 20 minutes - hardly a battery-draining process.
07-22-2013, 11:15 AM
#22
Drifting
I suppose that in one way or another we're all fans of our cars. So cheers to my fellow RLer's who find themselves watching oil temps, obsessing over rock chips and which brand of oil to use, and knowing more then the average driver's fair share of TLA's and what to do with that esoteric knowledge... DME, PPI, CEL, and TPMS. 
Of course, I like to come back here for a helpful hint/resolution or even just some common ground to share with my fellow enthusiast when I'm feeling SOL. 
Of course, I like to come back here for a helpful hint/resolution or even just some common ground to share with my fellow enthusiast when I'm feeling SOL.
07-22-2013, 11:18 AM
#23
Race Director
I always pop the engine lid after a drive to assist in the heat rising up and out of the engine bay. (removed the light bulb from the hatch so it doesn't cause any battery drain)
As others have mentioned, the close combination of the motor/cats/mufflers makes for quite a bit of heat compared to a usual front engined cars configuration.
As others have mentioned, the close combination of the motor/cats/mufflers makes for quite a bit of heat compared to a usual front engined cars configuration.
Note too the fan blows the air down. This is to reduce the effects of the hottest air rising from the exhaust system from being pulled out the top and thus overheating the other components higher up in the engine compartment.
When you open the engine compartment lid not only do you reduce the fan's effectiveness you encourage the hot air to flow up and thus heat the more sensitive components in the engine compartment.
Not good.
Leave the lid closed so the fan when it is turned on can do what it is supposed to do. Blow the hot air out the bottom of the engine compartment and bring in cool air from above.
07-22-2013, 12:02 PM
#24
Instructor
Join Date: Apr 2012
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At the track you see all manner of strategies for cooling the car down in the paddock after a hard run. After a cool-down lap there is still a great deal of heat. People are doing popped lid, fans, etc. I usually leave my lid closed to benefit the built-in fan.
A strategy that I've seen and often wondered about is leaving the car idling for a few minutes. The explanation is that it keeps the coolant circulating through engine and the radiators while the fans are going but the engine is not being run hard. And someone said something about an air/oil separator issue in 98X cars. Anybody have any feedback on that particular strategy?
A strategy that I've seen and often wondered about is leaving the car idling for a few minutes. The explanation is that it keeps the coolant circulating through engine and the radiators while the fans are going but the engine is not being run hard. And someone said something about an air/oil separator issue in 98X cars. Anybody have any feedback on that particular strategy?
07-22-2013, 12:42 PM
#25
Pro
07-22-2013, 01:10 PM
#26
Instructor
I too have noticed this phenom. I also notice that the cooling fan does a good job of keeping the compartment cool when it's operating, like sitting at a stoplight. On a hot day I have run around back and popped the hatch to measure the temp and it's been pretty cool due to the fan. I did this because of the gripes from some about the Fabspeed intake being a "hot air intake" (not to start that conversation again
)
Anyway, just ordered the Gundo Fister mod and am having the mufflers ceramic coated for better heat insulation- I'm interested to see the effect and will report.
)Anyway, just ordered the Gundo Fister mod and am having the mufflers ceramic coated for better heat insulation- I'm interested to see the effect and will report.
07-22-2013, 01:10 PM
#27
Drifting
07-22-2013, 01:19 PM
#28
In North Carolina where the heat is usually around 95-100 towards the end of the afternoon, I always pop the lid open and leave the garage door open to help cooling the engine. As we all know, hot air moves vertically from low to high and this helps tremendously the cooling of the engine bay.
I am thinking about designing a flat fan tray (scavenged from routers and switches telecommunication equipment) that will sit between the rear wheels and be triggered by the presence of the car above.
In winter, I do not do any of that as the engine cools very quickly as long as the garage door stays open.
Yves
I am thinking about designing a flat fan tray (scavenged from routers and switches telecommunication equipment) that will sit between the rear wheels and be triggered by the presence of the car above.
In winter, I do not do any of that as the engine cools very quickly as long as the garage door stays open.
Yves
07-22-2013, 01:19 PM
#29
Pro
My floor is close to 7 yrs. old now. It's held up really well but could use a good scrubbing. It's vinyl 12X12 tiles by Race Deck. Here's the link if you want more info . . . . http://www.racedeck.com/
07-23-2013, 04:59 PM
#30
Rennlist Member
Joining the discussion a bit late but I seem to remember the owners manual recommending "raising the spoiler" via the lower center console "manual control switch" during hot wx and stop and go traffic on hot days. This may allow more air escaping and/or the fan pulling more air for cooling. In fact I believe that the spoiler will automatically raise at a certain thermostatically controlled temp. In any case, these rear engine cars do get hot, one of the reasons the serpentine belt gets checked and changed sooner than most cars. I have to back into my garage and that heat really accumulates back there after shutdown so I always give it 10-20 seconds of idle while fan is running!