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Question about trans/differential cooling.

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Old Jun 13, 2021 | 08:30 PM
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Default Question about trans/differential cooling.

As some are aware I very recently picked up a Z-51 convertible that has differential and trans cooling, but no vents on the top of the rear quarters. How is airflow over the coolers achieved? Just by under car flow as it's zipping down the road?
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Old Jun 13, 2021 | 08:35 PM
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Originally Posted by astepup
As some are aware I very recently picked up a Z-51 convertible that has differential and trans cooling, but no vents on the top of the rear quarters. How is airflow over the coolers achieved? Just by under car flow as it's zipping down the road?
Look down below.. Big *** vents scooping up air flow.

Last edited by Skid Row Joe; Jun 13, 2021 at 08:36 PM. Reason: Typo
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Old Jun 13, 2021 | 08:57 PM
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Originally Posted by Skid Row Joe
Look down below.. Big *** vents scooping up air flow.
Thanks Skid! I never even thought of that. I hope that was the only dumb thing I asked today 🤪
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Old Jun 13, 2021 | 09:21 PM
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My '15 Z51 vert has two coolers mounted directly behind the differential, one for the trans and one for the differential as I recall when I traced the lines. There is also an air dam mounted on the cross member directly below those coolers. There may be other coolers behind the driver's side quarter panel as I hear a fan running back there occasionally.
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Old Jun 13, 2021 | 10:48 PM
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Originally Posted by astepup
Thanks Skid! I never even thought of that. I hope that was the only dumb thing I asked today 🤪
Get it up on a rack and feast your eyes on the undersides.
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Old Jun 13, 2021 | 10:53 PM
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Yep, the vents for cooling the diff and tranny are located under the car on a vert.
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Old Jun 14, 2021 | 06:16 AM
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Not sure if you have an A8 but if you're concerned about keeping it a little cooler you can wrap the back of the x-pipes that go on each side of the trans. Did this on my '19 Z and keeps temps down even when flogging it at the track. I'm waiting for an AWE axle-back and when it arrives I'll wrap that from the x-pipe joint back past the trans as well

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Old Jun 14, 2021 | 06:26 AM
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The convertible has vents in the right hand rear wheel well also...

Last edited by c7twlblue; Jun 14, 2021 at 06:27 AM.
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