9 Tronic Questions: w9y500 to w9x700
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'16 GLC 43 AMG
9 Tronic Questions: w9y500 to w9x700
I keep reading that our gear boxes are one of the major weak point in our cars. Is it possible to swap from the w9y500 found in the M276 equipped cars to the w9x700? If not, what needs to be overhauled in the w9y500 to be able to handle more power? I’ve been pricing out turbos and all of the over involved kit to push the limits on a stock bottom end, but want to be able to upgrade the transmission where and if possible.
Nino
Nino
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C43
How much power are you currently making and/or what 1/4 times / trap speed are you running? I ask because a few members on here have run between 10.8 and 11.1 quarter mile times and beat on their cars for years without a transmission issue that I am aware of. My 2017 is decently modified, and has been for approximately six years. No transmission issues beyond the normal 9G complaints.
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'16 GLC 43 AMG
It’s not nearly as modified as it needs to be. I’ve only had MSL in Birmingham do a Stage 1 tune. MST intake is on the way, a local place will be doing the catted DPs, and I’ll be installing a Wagner charge cooler.
Im planning the build, but I just don’t know if getting the turbos upgraded is worth it if the tranny can’t handle it. I don’t plan on going WMI and E85 isn’t as prevalent in my area here in England. If I do the turbos then I will be upgrading the LPFP and HPFP as well. I have a spare throttle body that I might have bored out or I’ll port it to see if that adds anything.
The only 43 I’ve seen with upgraded turbos has put down 545bhp on YT, but that’s the ONLY one I’ve come across being done with actual dyno numbers.
Im planning the build, but I just don’t know if getting the turbos upgraded is worth it if the tranny can’t handle it. I don’t plan on going WMI and E85 isn’t as prevalent in my area here in England. If I do the turbos then I will be upgrading the LPFP and HPFP as well. I have a spare throttle body that I might have bored out or I’ll port it to see if that adds anything.
The only 43 I’ve seen with upgraded turbos has put down 545bhp on YT, but that’s the ONLY one I’ve come across being done with actual dyno numbers.
How much power are you currently making and/or what 1/4 times / trap speed are you running? I ask because a few members on here have run between 10.8 and 11.1 quarter mile times and beat on their cars for years without a transmission issue that I am aware of. My 2017 is decently modified, and has been for approximately six years. No transmission issues beyond the normal 9G complaints.
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2015 C400 4MATIC Palladium Silver Metallic
It’s not nearly as modified as it needs to be. I’ve only had MSL in Birmingham do a Stage 1 tune. MST intake is on the way, a local place will be doing the catted DPs, and I’ll be installing a Wagner charge cooler.
Im planning the build, but I just don’t know if getting the turbos upgraded is worth it if the tranny can’t handle it. I don’t plan on going WMI and E85 isn’t as prevalent in my area here in England. If I do the turbos then I will be upgrading the LPFP and HPFP as well. I have a spare throttle body that I might have bored out or I’ll port it to see if that adds anything.
The only 43 I’ve seen with upgraded turbos has put down 545bhp on YT, but that’s the ONLY one I’ve come across being done with actual dyno numbers.
Im planning the build, but I just don’t know if getting the turbos upgraded is worth it if the tranny can’t handle it. I don’t plan on going WMI and E85 isn’t as prevalent in my area here in England. If I do the turbos then I will be upgrading the LPFP and HPFP as well. I have a spare throttle body that I might have bored out or I’ll port it to see if that adds anything.
The only 43 I’ve seen with upgraded turbos has put down 545bhp on YT, but that’s the ONLY one I’ve come across being done with actual dyno numbers.
You'll never get anywhere near the limitations of 1) the transmission 2) the turbos if you're going to only be running pump gasoline.
E85 is pretty much the only way to get max power out of these motors.
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'16 GLC 43 AMG
I wonder why there’s been so much concern over this then? The transmission keeps getting point out as the weak point. I’m only 48nm from the 700nm rating so I just wanted to be prepared and know what my options were.
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From: Central Florida
'15 C400 and '15 ML350
Where are you getting this info? This post is the only one ive seen questioning the trans.
The bottom end of the motor (rods) would be my concern.
Could you convert to MCT? Maybe, but for that cost, you have the wrong platform to try and make 800hp.
The bottom end of the motor (rods) would be my concern.
Could you convert to MCT? Maybe, but for that cost, you have the wrong platform to try and make 800hp.
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'16 GLC 43 AMG
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For better or for worse, I’m getting it from the forums. I know the rods are the weak point in the engine. That’s usually followed by “and then the transmission”. So that’s why i was asking. I’m well aware that this isn’t the platform for those numbers. Rather than just throw things together without a plan, I’m doing my research so I know limitations in advance. Ultimately, I’m trying to determine if I should even bother going any further than intake, DPs, chargecooler, and a tune.
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'16 GLC 43 AMG
MBWorld God!
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Ya as long as you don't do anything crazy, it shouldn't be a problem. The reliability of this transmission isn't bad sans the poor software and programming.
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C43
I’m pushing 560 wheel torque no issues so far. TCU tune 612 whp built motor. We did keep the torque a little low to see how the transmission adapts. So far so good. I will raise torque after a few months to approximately 600 and see how the car likes it.
