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Old Jan 2, 2020 | 04:44 PM
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Default C8.R engine shot



EDIT - Seems many folks don't understand what they're looking at. The carbon fiber cover under the main intake plenum is the access panel for the ITBs (Individual Throttle Bodies). The red part you can barely see is the valve cover. Yes this is a DOHC motor.



EDIT 2 - The yellow rectangle is the valve cover.



Last edited by RapidC84B; Jan 3, 2020 at 01:00 PM.

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Jan 2, 2020, 04:51 PM
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I thought this was was going to be a pic of a blown up engine. "engine shot"
Old Jan 2, 2020 | 04:50 PM
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See that tiny little plastic pipe that is obviously not carbon fiber in the intake tract? Do you know why that is there? It's there so the other makes have a chance in a race with a C8 Corvette!
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Old Jan 2, 2020 | 04:51 PM
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I thought this was was going to be a pic of a blown up engine. "engine shot"
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Old Jan 2, 2020 | 04:52 PM
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Originally Posted by k wright
See that tiny little plastic pipe that is obviously not carbon fiber in the intake tract? Do you know why that is there? It's there so the other makes have a chance in a race with a C8 Corvette!
It's called BOP... it's pretty much standard practice in any/all race series. The days of "run what ya brung" are long gone when MFG $$$ are needed to sustain a series.
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Old Jan 2, 2020 | 04:58 PM
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Cool shot....thanks for posting!
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Old Jan 2, 2020 | 05:05 PM
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Originally Posted by Tool Hoarder
It's called BOP... it's pretty much standard practice in any/all race series. The days of "run what ya brung" are long gone when MFG $$$ are needed to sustain a series.
IMSA fans can be so frustrating. So much complaining about BOP. Without BOP we'd get unchecked spending, with one constructor winning every race, and the others leaving or just throwing in the towel. It would be crazy boring, if it could even stick around.
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Old Jan 2, 2020 | 05:07 PM
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Originally Posted by spireland
IMSA fans can be so frustrating. So much complaining about BOP. Without BOP we'd get unchecked spending, with one constructor winning every race, and the others leaving or just throwing in the towel. It would be crazy boring, if it could even stick around.
Even with BOP things are looking poor right now... very few entrants in the Pro Class. Might as well combine Pro and GTD.
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Old Jan 2, 2020 | 05:19 PM
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Originally Posted by k wright
See that tiny little plastic pipe that is obviously not carbon fiber in the intake tract? Do you know why that is there? It's there so the other makes have a chance in a race with a C8 Corvette!
Looks like one intake with a 60mm restrictor instead of two intakes with a 27mm restrictor in each.
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Old Jan 2, 2020 | 05:26 PM
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For the Roar the restrictor is 44.0 mm

Last year at Daytona (which has its own BoP) it was two at 30.6 mm

Last edited by z28lt1; Jan 2, 2020 at 05:26 PM.
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Old Jan 2, 2020 | 05:40 PM
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With unload day today, good pictures will start to flow:



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Old Jan 2, 2020 | 05:53 PM
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Very cool engine in the car. Hope they do very well this year.
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Old Jan 2, 2020 | 05:54 PM
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Looks like jewlery!
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Old Jan 2, 2020 | 06:42 PM
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Originally Posted by z28lt1
For the Roar the restrictor is 44.0 mm

Last year at Daytona (which has its own BoP) it was two at 30.6 mm
I know it's part of the restictions/BoP but I find it amusing that you can put a 103mm throttle body on your LT engine and ASO/IMSA has a 44mm intake restriction. I think they should let manufacturers put out as much horsepower and torque as you can because you pay for it by the reduction in mileage. Just let manufacturers find their own sweet spot. And, I do realize the fastest LMP cars are hybrids.

Last edited by JimmyJazz; Jan 2, 2020 at 07:06 PM.
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Old Jan 2, 2020 | 06:51 PM
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Originally Posted by Tool Hoarder
Can not wait for Daytona, three weeks. It looks like the bodyside vents are dedicated to engine and brake cooling, and the rear intake is for ram air intake, and trans/diffy, but hard to tell.
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Old Jan 2, 2020 | 08:23 PM
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Very cool. Keep the pics coming!
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Old Jan 2, 2020 | 09:50 PM
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Well thats interesting. There's no window into the engine compartment from the driver side. So the window on the the rear hatch is really just black plastic. Cant see through it
And it looks like that was the case for the C7R too. Never realized that


Last edited by JMLS; Jan 2, 2020 at 09:53 PM.
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Old Jan 2, 2020 | 10:10 PM
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Yep... they use rear vision cameras.
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Old Jan 2, 2020 | 10:14 PM
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C6R and C7R and, I guess C8R rear view. .
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Old Jan 2, 2020 | 10:17 PM
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This doesn't look like a DOHC engine.
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Old Jan 2, 2020 | 10:22 PM
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Originally Posted by Michael A
This doesn't look like a DOHC engine.
It is.
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