engine reliability??
#1
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Thread Starter
engine reliability??
Hey there, I wanted to know your thoughts regarding this engine? I have read that this engine was properly prepared and tested by AMG, internals and forged and reinforced and the engine is almost to the point of motor racing.
But still 26 psi on a turbo for a road car is something that makes us think. Obviously we have to take certain precautions, but what reliably can we expect from this engine?
But still 26 psi on a turbo for a road car is something that makes us think. Obviously we have to take certain precautions, but what reliably can we expect from this engine?
#2
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03 Lexus IS300 (old faithful) / 91 3000GT VR-4 / 14 CLA45 AMG / 11 BMW X6M
Im sure its much more reliable than a v12 bi turbo lol. This is suppose to be the best 4 cylinder production engine ever. With a bunch of options this thing is almost 70 thousand. 70 thousand for a FOUR cylinder damn I hope its reliable lol.
#3
Super Member
Hey there, I wanted to know your thoughts regarding this engine? I have read that this engine was properly prepared and tested by AMG, internals and forged and reinforced and the engine is almost to the point of motor racing.
But still 26 psi on a turbo for a road car is something that makes us think. Obviously we have to take certain precautions, but what reliably can we expect from this engine?
But still 26 psi on a turbo for a road car is something that makes us think. Obviously we have to take certain precautions, but what reliably can we expect from this engine?
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#5
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Thread Starter
AMG Performance Suspension
Thank you all for your responses. Now another topic (off-topic...) that worries ''me'' is the optional AMG Performance Suspension, is it really too hard to live with? It will be not a trackday car but of course there will be opportunity to pull the power in some nice B-roads, but it's really worth?? In addition to this, the configuration will be with the 19'' rims and AMG performance seats. Should be an extra to discard or to go for?
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03 Lexus IS300 (old faithful) / 91 3000GT VR-4 / 14 CLA45 AMG / 11 BMW X6M
Thank you all for your responses. Now another topic (off-topic...) that worries ''me'' is the optional AMG Performance Suspension, is it really too hard to live with? It will be not a trackday car but of course there will be opportunity to pull the power in some nice B-roads, but it's really worth?? In addition to this, the configuration will be with the 19'' rims and AMG performance seats. Should be an extra to discard or to go for?
#7
Super Member
26psi is momentary peak boost. Most of the time ECU is probably running 20-22psi if I had to take a guess. They have torque limiters too in the ECU (which lowers boost of course).
The motor is not what I would be worried about, it's the transmission and the PTU power splitter. They are not designed to take stupid power. I bet 450-460 is all they can take before you start running into issues
The motor is not what I would be worried about, it's the transmission and the PTU power splitter. They are not designed to take stupid power. I bet 450-460 is all they can take before you start running into issues
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#8
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Should be very reliable and I of course would have no issues going 30 PSI
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
#10
In regards to the sport suspension, I wouldnt' say it's all that rough. I'm used to driving Big vehicles with huge tires. Maybe i'm just to into how well it eases into 80mph and you don't even notice. lol.
as far as the motor, everything i've read leads to it being very stout and handling even more power than it already has. I'll definitely be doing a tune to up the power once they've been around and everyone else comes away with no problems lol.
as far as the motor, everything i've read leads to it being very stout and handling even more power than it already has. I'll definitely be doing a tune to up the power once they've been around and everyone else comes away with no problems lol.
#11
Former Vendor of MBWorld
26 PSI is also relative, you have to remember 26 PS from this turbo is not the same as 26 PSI from a larger turbo
I have been driving my Evo every day for 4 years @ 28 PSI, I think Mercedes has this handled as long as the keep the car stock. Reliability once you start modifying it is anyone's guess but typically if you start with a solid vehicle and mod it correctly things are okay
I have been driving my Evo every day for 4 years @ 28 PSI, I think Mercedes has this handled as long as the keep the car stock. Reliability once you start modifying it is anyone's guess but typically if you start with a solid vehicle and mod it correctly things are okay
#13
Former Vendor of MBWorld
Explained simply, a larger turbo forcing 26 PSI into the motor is moving a larger amount of air in order to reach that same amount of pressure
For example, you can run 26 LBS of boost on a stock turbo ALL DAY as that is what Mercedes built the car for
but say you strap something like a Garret GT40 on the car, 26 PSI could be too much for it to handle
For example, you can run 26 LBS of boost on a stock turbo ALL DAY as that is what Mercedes built the car for
but say you strap something like a Garret GT40 on the car, 26 PSI could be too much for it to handle
Last edited by VividRacing; 02-06-2014 at 03:02 PM.
#14
MBWorld Fanatic!
Explained simply, a larger turbo forcing 26 PSI into the motor is moving a larger amount of air in order to reach that same amount of pressure
For example, you can run 26 LBS of boost on a stock turbo ALL DAY as that is what Mercedes built the car for
but say you strap something like a Garret GT40 on the car, 26 PSI could be too much for it to handle
For example, you can run 26 LBS of boost on a stock turbo ALL DAY as that is what Mercedes built the car for
but say you strap something like a Garret GT40 on the car, 26 PSI could be too much for it to handle
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96 and 08 911 turbos
Explained simply, a larger turbo forcing 26 PSI into the motor is moving a larger amount of air in order to reach that same amount of pressure
For example, you can run 26 LBS of boost on a stock turbo ALL DAY as that is what Mercedes built the car for
but say you strap something like a Garret GT40 on the car, 26 PSI could be too much for it to handle
For example, you can run 26 LBS of boost on a stock turbo ALL DAY as that is what Mercedes built the car for
but say you strap something like a Garret GT40 on the car, 26 PSI could be too much for it to handle
Furthermore, while the boost will be the same, the larger compressor will likely be more efficient, so you end up with a cooler intake charge, thereby you should make more power. Obviously you'd need more fueling for that, but thats a given.
#16
Former Vendor of MBWorld
hmm, I'm not sure I agree. If the resistance is the same (i.e. you haven't changed anything in the intake/heads/exhaust, etc) a greater flow from the larger turbo should result in more boost, just as going to a smaller pulley on a supercharger results in more boost.
Furthermore, while the boost will be the same, the larger compressor will likely be more efficient, so you end up with a cooler intake charge, thereby you should make more power. Obviously you'd need more fueling for that, but thats a given.
Furthermore, while the boost will be the same, the larger compressor will likely be more efficient, so you end up with a cooler intake charge, thereby you should make more power. Obviously you'd need more fueling for that, but thats a given.
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96 and 08 911 turbos
What you are saying is that if you enlarged the intake track, intake manifold, intake ports, etcs, (i.e. made the hose bigger) you would flow more air, and I don't disagree.
My point would be that if you put a bigger water pump on the garden hose, you end up with a higher psi because the restriction source has remained the same.
#21
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thats a given, but that relates to the parts downstream of the turbo or water pump in your example.
What you are saying is that if you enlarged the intake track, intake manifold, intake ports, etcs, (i.e. made the hose bigger) you would flow more air, and I don't disagree.
My point would be that if you put a bigger water pump on the garden hose, you end up with a higher psi because the restriction source has remained the same.
What you are saying is that if you enlarged the intake track, intake manifold, intake ports, etcs, (i.e. made the hose bigger) you would flow more air, and I don't disagree.
My point would be that if you put a bigger water pump on the garden hose, you end up with a higher psi because the restriction source has remained the same.