Cams
Thread Starter
Newbie
Joined: Feb 2019
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2012 C63 AMG Coupe
Cams
Okay I know this is a dumb option for power, but I just want to know why do the MHP cams quote 80hp and the VRP cams quote 20hp? Whats accurate?
Also has anyone ever asked comp cams if they would grind some? I messaged them, will update you. Group buy to entice them?
https://vrpspeed.com/index.php?route...product_id=443
Also has anyone ever asked comp cams if they would grind some? I messaged them, will update you. Group buy to entice them?
https://vrpspeed.com/index.php?route...product_id=443
Member
Joined: Mar 2015
Posts: 111
Likes: 7
From: Connecticut
2019 e63S, 2017 Audi R8 Twin Turbo
$3,000 for m156 cams isn't a bad price, but how accurate the power gains are that is another story. If they are accurate then thats a great deal.
With the price of these cars reducing so much, I expect to see a lot more exploration with performance and the prices of some mods coming down.
With the price of these cars reducing so much, I expect to see a lot more exploration with performance and the prices of some mods coming down.
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Joined: Jun 2009
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2010 C63 AMG
There’s definitely some room for power from modified cams as the stock ones are pretty tame... it more about nailing the tune down afterwards I think that may be the issue especially with the variable cam timing
Thread Starter
Newbie
Joined: Feb 2019
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2012 C63 AMG Coupe
Michael,
At this present, their is not enough demand for us to really design cams for those engines. By the time you look at engineering time & fee's,
the cost of the cam cores plus grind times probably would not justify us carrying this family. Not to say that we wouldn't down the road.
But, you could send your cam in for profiling and we possibly could re-grind your cam for some improved performance.
On Wed, Feb 27, 2019 at 6:19 AM COMP Cams Cam Help <camhelp@compcams.com> wrote:
At this present, their is not enough demand for us to really design cams for those engines. By the time you look at engineering time & fee's,
the cost of the cam cores plus grind times probably would not justify us carrying this family. Not to say that we wouldn't down the road.
But, you could send your cam in for profiling and we possibly could re-grind your cam for some improved performance.
On Wed, Feb 27, 2019 at 6:19 AM COMP Cams Cam Help <camhelp@compcams.com> wrote:
Would you ever design custom cams for a 6.2l dohc amg motor? M156 for
reference. What if I had a group buy of 5/10 people? I could send stocks
in for reference. Thanks for your time!
reference. What if I had a group buy of 5/10 people? I could send stocks
in for reference. Thanks for your time!
Thread Starter
Newbie
Joined: Feb 2019
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2012 C63 AMG Coupe
Couldn't we just disable that? Adapt a similar profile to a big American V8?
Senior Member
Joined: May 2017
Posts: 482
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From: Las Vegas, NV
2014 C63 Coupe
Um sure. What's the point of keeping the motor if you're just going to discard the technical bits that make it what it is? Just do an LS swap and be done if you want a car with an American V8. Better yet, just buy a Camaro and call it good.
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2012 C63 AMG Coupe
I mean, sure that makes sense. A honda without v-tech isn't a honda motor anymore either, right?
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Joined: Feb 2019
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From: Perth, Western Australia
2010 Ford G6E Turbo / 2013 C63 Coupe - AMG Performance Pack
Potential problem with bigger cams is that they may need stiffer valve springs or the stock springs shimmed for more seat pressure. In that case, the higher spring pressure may not play nice with the variable cam timing unit or will at least end its life sooner rather than later. I'm not sure I'd want to lose the VCT as they generally broaden the torque/hp curve.
I'm a rooky with the C63 platform but have had to tame back the cam and spring choice on my last modded car to keep the fairly basic VCT system alive and even then it wasn't totally happy. I ran an aftermarket ECU (Autronic) on that car and the tuner could play around with rpm activation/deactivation points. There was a noticeable difference in low end torque from as little as 1,000 rpm when it was activated.
I'm a rooky with the C63 platform but have had to tame back the cam and spring choice on my last modded car to keep the fairly basic VCT system alive and even then it wasn't totally happy. I ran an aftermarket ECU (Autronic) on that car and the tuner could play around with rpm activation/deactivation points. There was a noticeable difference in low end torque from as little as 1,000 rpm when it was activated.
Last edited by juggernaut1; Feb 27, 2019 at 06:38 PM.
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Senior Member
Joined: May 2017
Posts: 482
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From: Las Vegas, NV
2014 C63 Coupe
All that ignores the fact that you're going to lose more by not having the variable valve timing than you will gain by running some high lift cams and just looking for peak hp.
Member
Joined: Mar 2015
Posts: 111
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From: Connecticut
2019 e63S, 2017 Audi R8 Twin Turbo
I don't recall seeing many (any?) DOHC motors that don't have some form of variable valve timing to make them work better. American V8s that are DOHC also have variable valve timing; the LS series V8s making big power with cams are simple pushrod motors (I had one). When has a Honda motor been improved by removing VTEC?
All that ignores the fact that you're going to lose more by not having the variable valve timing than you will gain by running some high lift cams and just looking for peak hp.
All that ignores the fact that you're going to lose more by not having the variable valve timing than you will gain by running some high lift cams and just looking for peak hp.
The m156 has a few flaws that are being correct now with cares becoming more affordable. The tuning options up until now where very limited, but how we have things like HP Tuners (who just released a new hardware component that allows for more features) and we have a full standalone options that is about $2,500 USD from Syvecs. I'm all about the standalone ecu it should allow for some new and exciting things to happen like more companies investing in cam r&d or maybe even a few more turbo builds.
Senior Member
Joined: May 2017
Posts: 482
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From: Las Vegas, NV
2014 C63 Coupe
I don't want to be that guy, but all motor drag Honda's do not run VTEC. They actually use cams with very high profiles.
The m156 has a few flaws that are being correct now with cares becoming more affordable. The tuning options up until now where very limited, but how we have things like HP Tuners (who just released a new hardware component that allows for more features) and we have a full standalone options that is about $2,500 USD from Syvecs. I'm all about the standalone ecu it should allow for some new and exciting things to happen like more companies investing in cam r&d or maybe even a few more turbo builds.
The m156 has a few flaws that are being correct now with cares becoming more affordable. The tuning options up until now where very limited, but how we have things like HP Tuners (who just released a new hardware component that allows for more features) and we have a full standalone options that is about $2,500 USD from Syvecs. I'm all about the standalone ecu it should allow for some new and exciting things to happen like more companies investing in cam r&d or maybe even a few more turbo builds.
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2005 E55
I don't want to be that guy, but all motor drag Honda's do not run VTEC. They actually use cams with very high profiles.
The m156 has a few flaws that are being correct now with cares becoming more affordable. The tuning options up until now where very limited, but how we have things like HP Tuners (who just released a new hardware component that allows for more features) and we have a full standalone options that is about $2,500 USD from Syvecs. I'm all about the standalone ecu it should allow for some new and exciting things to happen like more companies investing in cam r&d or maybe even a few more turbo builds.
The m156 has a few flaws that are being correct now with cares becoming more affordable. The tuning options up until now where very limited, but how we have things like HP Tuners (who just released a new hardware component that allows for more features) and we have a full standalone options that is about $2,500 USD from Syvecs. I'm all about the standalone ecu it should allow for some new and exciting things to happen like more companies investing in cam r&d or maybe even a few more turbo builds.
from what I've seen know one can make decent power yet using them.
I think the highest is like 452whp so far on qualudes car with full bolt on.
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Joined: Mar 2015
Posts: 111
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From: Connecticut
2019 e63S, 2017 Audi R8 Twin Turbo
Fair enough. I guess if I understood the objective better, it would be easier to comment with some level of sanity. Sure, the Honda motor that doesn't make power until 4500 RPM but redlines at 9500 will make peak HP with no VTEC and is great for drag racing. On the street, GTFO with that crap (and as a previous owner of one of those 9000 RPM redline F20 motors, I've been there). If the aim is to build an NA M156 powered C63 drag car, I guess you don't need VVT but some of the charm of these motors is that they make torque everywhere and are quite driveable in many conditions. You're going to lose that capability. If you're doing it just because you can, I fail to see the attraction of a 4K lb entry luxury car with poor driveability but so be it, I don't have to understand it lol.
https://www.hptuners.com/mpvi2/
