Do you let your sonic warm up
- Thread starter HADES20
- Start date
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It appears the Sonic uses a Garrett MGT1446MZGL which is just an internally wastgated and integral manifold GT14. There is very little info available online about the GT14... but after a few minutes of digging through photos I'm prepared to say you are correct that it is only oil cooled.
So I retract my former statement. The 2012 Sonic does indeed = 1983 Saab.
I'm glad I bought the extended warranty.
So I retract my former statement. The 2012 Sonic does indeed = 1983 Saab.
I'm glad I bought the extended warranty.
ThatTmoGuy
New member
I started digging through the diagrams on GMPD GMPartsDirect.com - Find a Item
Items 14-19 state cooling parts while 6-11 state there are oil systems parts. This would lead me to believe it is both water and oil cooled. However I can't find an oil return line so maybe that's what they mean by cooling pipe.
Items 14-19 state cooling parts while 6-11 state there are oil systems parts. This would lead me to believe it is both water and oil cooled. However I can't find an oil return line so maybe that's what they mean by cooling pipe.
Gsrdude
New member
By that diagram it looks to be water cooled.
Parts 14, 15, and 16 look to be water feed and return lines
6 and 9 the oil feed and return
ChrisJ
Active member
Water cooled
Gentlemen,
GM 1.4-liter I4 Engine @ NAIAS 2010 - YouTube
3:40 in
its water and oil cooled.
I knew this before buying the Sonic.
Gentlemen,
GM 1.4-liter I4 Engine @ NAIAS 2010 - YouTube
3:40 in
its water and oil cooled.
I knew this before buying the Sonic.
Chevrolet Customer Care
New member
Very interesting to read this thread. The Owner's Manual does in fact recommend that the vehicle be allowed to warm up a few minutes when it's cold outside. Definitely follow the recommended procedures to ensure optimal performance. Hope everyone has a Happy New Year!
From page 9-16 for 2013 model years & page 9-18 for 2012 models.
If the weather is below freezing
(0°C or 32°F), let the engine run
for a few minutes to warm up.
Matt,
GM Customer Assistance
From page 9-16 for 2013 model years & page 9-18 for 2012 models.
If the weather is below freezing
(0°C or 32°F), let the engine run
for a few minutes to warm up.
Matt,
GM Customer Assistance
Swordsmith
242hp/252 ft-lbs BNR EFI
I generally run for 20 seconds or so to initially warm up, and then drive gently for a little while. The engine heats up much faster going 5 or 10 mph than it does sitting in my driveway.... but also running pure E85 it really has a stalling problem until the engine temp is over 60, so I have to rev it a bit, and it's actually easier to stroll then it is to sit in the driveway.
If I had one of those driveways that empty straight onto a 55mph highway, I'd sure as hell warm it up properly before moving, but I figure here in town I'm stuck going slow the first few minutes no matter what I might want to do.
I'm curious about this "run it a bit before turning it off" plan some of you are mentioning. Watching the engine temp gauge, it always climbs while sitting after running. Does it really make sense to raise the internal temps by deliberately doing this when you won't be running any fresh air past the radiator and intercooler?
Also my daughter's Altima has a fan that runs air across the coolant system for a few minutes after shutdown, might make sense to install something like that?
If I had one of those driveways that empty straight onto a 55mph highway, I'd sure as hell warm it up properly before moving, but I figure here in town I'm stuck going slow the first few minutes no matter what I might want to do.
I'm curious about this "run it a bit before turning it off" plan some of you are mentioning. Watching the engine temp gauge, it always climbs while sitting after running. Does it really make sense to raise the internal temps by deliberately doing this when you won't be running any fresh air past the radiator and intercooler?
Also my daughter's Altima has a fan that runs air across the coolant system for a few minutes after shutdown, might make sense to install something like that?
ChrisJ
Active member
If I pull into a parking spot right off of a highway I let it idle for 10 seconds or so before shutting it off just to let the turbo slow up some before cutting its oil supply. I don't make too much of a big deal out of it really. When I pull into my spot at home I'm usually running so slow it doesn't matter anyway.
Swordsmith
242hp/252 ft-lbs BNR EFI
Oh I can see that, going from 125mph to zero in seconds... but I'm almost never running any boost shortly before parking, I have to pull off the highway, drive around, find a spot... again it's similar to the situation where your driveway is right off a highway, I can see where that might be different.
ThatTmoGuy
New member
the main point to letting it "cool down" (i know that at a stop it warms up at idle) but this cool down is to get the hot oil and coolant out of the turbo so it doesn't cook any of the seals or have the already hot oil in the turbo cook more while it cools down after you shut off the motor. I'm not saying that you absolutely have to do this but it's good practice with any turbo that's why they make turbo timers.
ChrisJ
Active member
I thought turbo timers were designed for older non-water cooled turbos, and that water cooled turbos are cooled by water which continues to circulate even after the water pump stops due to thermosiphoning.
Wonder how many big diesels have turbo timers, I bet none.
Gsrdude
New member
Thats not why you idle down a turbo. Not because it is still spinning or to slow it down.
This was done ages ago (Google Turbo Timers) to prevent oil coking and extend turbocharger life.
As you all know turbos get hot, very hot. So they used to tell you to idle them down or use a turbo timer because when you stop the engine oil no longer flows obviously much drains back to the pan leaving the compressor and turbine housing way hot and oil coking can occur to the oil left in the turbocharger
By idling them down it will cool by running oil through the turbo and prevent coking of the oil left in the turbo at shutdown
Useless in modern Watercooled turbos
Hell the 35r variant in my EVO is DBB you can literally hear the turbo spin a good 10 min after shutting the engine off
This was done ages ago (Google Turbo Timers) to prevent oil coking and extend turbocharger life.
As you all know turbos get hot, very hot. So they used to tell you to idle them down or use a turbo timer because when you stop the engine oil no longer flows obviously much drains back to the pan leaving the compressor and turbine housing way hot and oil coking can occur to the oil left in the turbocharger
By idling them down it will cool by running oil through the turbo and prevent coking of the oil left in the turbo at shutdown
Useless in modern Watercooled turbos
Hell the 35r variant in my EVO is DBB you can literally hear the turbo spin a good 10 min after shutting the engine off
ChrisJ
Active member
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New member
Good to hear. I was hoping Opel wasn't shortsighted enough to repeat Saab's mistake. Oil-cooled turbochargers are for chinese ebay turbo kits.
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