No one ever has taken a C63 to 9000+ RPM?
Thread Starter
Member
Joined: Feb 2019
Posts: 182
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2009 c63
No one ever has taken a C63 to 9000+ RPM?
Hi All,
There are companies that will regrind cams to different lifts and durations... You can get your C63 heads ported. You can do some stroking and boring via offset ground cranks and sleeves, you can raise compression via custom pistons.
There is NO ONE that has taken a C63 to 9000+ RPM? With the DOHC, it should be possible to make a 10-12k build ( it's beeen done on pushrods ).
I know the stock C63 intake shuts down power before 7000RPM, but a SLS style intake should allow operation into this higher rpm range.
Please advise.
There are companies that will regrind cams to different lifts and durations... You can get your C63 heads ported. You can do some stroking and boring via offset ground cranks and sleeves, you can raise compression via custom pistons.
There is NO ONE that has taken a C63 to 9000+ RPM? With the DOHC, it should be possible to make a 10-12k build ( it's beeen done on pushrods ).
I know the stock C63 intake shuts down power before 7000RPM, but a SLS style intake should allow operation into this higher rpm range.
Please advise.
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From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Hi All,
There are companies that will regrind cams to different lifts and durations... You can get your C63 heads ported. You can do some stroking and boring via offset ground cranks and sleeves, you can raise compression via custom pistons.
There is NO ONE that has taken a C63 to 9000+ RPM? With the DOHC, it should be possible to make a 10-12k build ( it's beeen done on pushrods ).
I know the stock C63 intake shuts down power before 7000RPM, but a SLS style intake should allow operation into this higher rpm range.
Please advise.
There are companies that will regrind cams to different lifts and durations... You can get your C63 heads ported. You can do some stroking and boring via offset ground cranks and sleeves, you can raise compression via custom pistons.
There is NO ONE that has taken a C63 to 9000+ RPM? With the DOHC, it should be possible to make a 10-12k build ( it's beeen done on pushrods ).
I know the stock C63 intake shuts down power before 7000RPM, but a SLS style intake should allow operation into this higher rpm range.
Please advise.
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Joined: Jun 2021
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
I have a friend who has an engine that goes upwards of like 15k....once. Then, they rebuild it before the next time down the drag strip....wait, I think he switched to a jet car...
Thread Starter
Member
Joined: Feb 2019
Posts: 182
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2009 c63
I don't but i suspect the SLS owners are more likely to have DEEP pockets... I just can't imagine one of them didn't have the engine setup to spin up to 10,000 RPM and make like 900-1000HP N/A....
Thread Starter
Member
Joined: Feb 2019
Posts: 182
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2009 c63
Yep got no answers and all the digging around on the internet showed nothing. Such a potent DOHC platform with the cubes and possibility for even more cubes and i'm suprised no one ever maxxed it out N/A...
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Joined: Oct 2023
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From: New Hampshire
ML 63 AMG
FYI a blower will make more power than revving the engine to 9K
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Joined: Jul 2013
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'12 C63BS "SlickTop", '08 CLK63BS, '16 E63S wagon, '12 CLS63, amongst other non-Merc toys
ie. a turn-key stock 992 gt3 touring for example, is very balanced, revs to 9k and is plenty fun to enjoy on the street; cost the same, if not less than an unproven theory, when the unknown cost of "time" & "stress" are involved.
so you do you, and keep us posted on your progress, the community thanks you for taking one for the team to develop a bullet-proof kit, sure some of us will be glad to cough up the mula at that point, maybe.
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From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
You could post the question in the AMG Private Lounge. Perhaps somebody may give you info
Last edited by DRBC43AMG; Nov 1, 2025 at 06:06 AM. Reason: Completed post
Super Member
Joined: Jul 2012
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2013 c63 Magnuson SCed
Is there any point to building one to rev that high since it sounds much cheaper to add a blower that's already proven? You're just wanting to move the curve higher which doesn't automatically add power underneath it.
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2005 e55 AMG
Accidental has a good point. Look at the Ford Mustangs, they can go to 8,200-8,500 rpm which I have done at the dealer I worked at many times but I can tell you that although they pull very hard up top, they are complete dogs at 4,000-4,500 rpm and below and customers many times requested a differential gear change. There is almost always a big trade off with rpm like that with the torque especially.
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From: DFW
SL63
If I recall, when I owned a Honda V45 Interceptor, red line was 12,000rpm.
In lower gears, you could get to that redline easily, the lower the gear was.
In the higher gears it was a lot harder.
In top gear, on level ground, and pretty close to sea level, around room temperature, it was nearly impossible to get to redline.
In all cases, the closer you got to the redline, the farther you were out of the best torque range.
Raising the redline for that motorcycle would have very little added performance.
Most drivetrains are designed roughly the same in the terms I just laid out if performance is desired .
Quite different for power and torque designs.
In lower gears, you could get to that redline easily, the lower the gear was.
In the higher gears it was a lot harder.
In top gear, on level ground, and pretty close to sea level, around room temperature, it was nearly impossible to get to redline.
In all cases, the closer you got to the redline, the farther you were out of the best torque range.
Raising the redline for that motorcycle would have very little added performance.
Most drivetrains are designed roughly the same in the terms I just laid out if performance is desired .
Quite different for power and torque designs.
