3.5 Liter 280 HP vs 4.3 Liter 275 HP?
Thread Starter
Super Member
Joined: May 2005
Posts: 558
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From: New York City
2000 CLK 430
3.5 Liter 280 HP vs 4.3 Liter 275 HP?
Why and how does the G35 coupe put out more horsepower than our bigger engines?
I am not very knowledgeable about engines but I just wanted to get some explanations.
Its normally aspirated and 3.5 liters
I'm normally aspirated and 4.3 liters yet my hp is slightly lower than the G35.
Forget looks, lets just discuss engins here - where did my HP go?
I am not very knowledgeable about engines but I just wanted to get some explanations.
Its normally aspirated and 3.5 liters
I'm normally aspirated and 4.3 liters yet my hp is slightly lower than the G35.
Forget looks, lets just discuss engins here - where did my HP go?
Super Member
Joined: Feb 2005
Posts: 929
Likes: 3
From: Littleton, CO
2005 E55 silver
infiniti-10.3 compression ratio, double overhead cam, variable valve timing/camshaft and four valves per cylinder VQ35DE
CLK-4.3-Liters V8 SOHC 24 Valves 10.1 compression.
The compression is slightly higher in the Infiniti and it has a double overhead cam. The CLK only has a single.
CLK-4.3-Liters V8 SOHC 24 Valves 10.1 compression.
The compression is slightly higher in the Infiniti and it has a double overhead cam. The CLK only has a single.
Super Member
Joined: Feb 2005
Posts: 929
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From: Littleton, CO
2005 E55 silver
usually, you have to replace the cylinders if you don't want to supercharge it. This is fairly cheap on the good ol american muscle cars..but I don't know if you could find different cylinders for the CLK. I would think the cost would be about the same to just get a supercharger. But the higher the compression, the higher octane gas you'll need to get. Also, if you raise the compression of a naturally aspirated car, then you can't really supercharge it..it would be way too much. Usually when you get above 11.5 that is almost "race" only. I think the new 63 motor is gonna be around 11 to 1. So, that is gonna be tough to supercharge.
MBWorld Fanatic!
Joined: Mar 2003
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From: Southern California
2017 W205 C43 AMG
Don't forget to discuss torque output as well. The CLK 4.3 litre puts out 295 lbs of torque. Also, HP numbers can be considered "best results" or "optimum output." Some engines in real life scenarios may put out a little more.
I dyno'ed my car and it did 245 hp/ and 251 torque at the wheels.
I dyno'ed my car and it did 245 hp/ and 251 torque at the wheels.
Thread Starter
Super Member
Joined: May 2005
Posts: 558
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From: New York City
2000 CLK 430
Well I was on the road about a month back when a 350z drove by me and recognized that I was a worthy advisary to take on... as he passed he dropped his speed down and turned on his flashers as to get my attention
he pulled nose to nose and I knew it was on... from a rollin start... at about 65/70 mph... we both floored it and I ended up gettin the best of him
How do you explain that?
lighter car, more HP versus my v8 beast.
I am completely puzzled.
he pulled nose to nose and I knew it was on... from a rollin start... at about 65/70 mph... we both floored it and I ended up gettin the best of him
How do you explain that?
lighter car, more HP versus my v8 beast.
I am completely puzzled.
Super Member
Joined: Mar 2003
Posts: 547
Likes: 6
From: SF Bay Area
991.1 gt3, w204 c63 507
Originally Posted by wnycec
Well I was on the road about a month back when a 350z drove by me and recognized that I was a worthy advisary to take on... as he passed he dropped his speed down and turned on his flashers as to get my attention
he pulled nose to nose and I knew it was on... from a rollin start... at about 65/70 mph... we both floored it and I ended up gettin the best of him
How do you explain that?
lighter car, more HP versus my v8 beast.
I am completely puzzled.
he pulled nose to nose and I knew it was on... from a rollin start... at about 65/70 mph... we both floored it and I ended up gettin the best of him
How do you explain that?
lighter car, more HP versus my v8 beast.
I am completely puzzled.
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Senior Member
Joined: Nov 2001
Posts: 291
Likes: 0
From: Portland, OR
2001 CLK320
Originally Posted by wnycec
Why and how does the G35 coupe put out more horsepower than our bigger engines?
I am not very knowledgeable about engines but I just wanted to get some explanations.
Its normally aspirated and 3.5 liters
I'm normally aspirated and 4.3 liters yet my hp is slightly lower than the G35.
Forget looks, lets just discuss engins here - where did my HP go?
I am not very knowledgeable about engines but I just wanted to get some explanations.
Its normally aspirated and 3.5 liters
I'm normally aspirated and 4.3 liters yet my hp is slightly lower than the G35.
Forget looks, lets just discuss engins here - where did my HP go?
The major differances will be the 4 valve / cyl and variable cam timing.
The M113 (and M112) engines have 3 valve / cyl and fixed timing. At the time, M-B found the 3 valve head produced lower emissions that the earlier 4 valve head.
Now with direct injection gasoline engines, there's even more precise control over the fuel / air ratios and higher ECM computing power in the newer designs.
The higher comp. ratio will help, but the 4 valve heads will flow more air.
The new Benz 3.5 V6 has 4 valve/cyl, variable cam timing and direct injection which allows higher comp. ratio. This engine is rated for 268hp for the V6 vs. 275hp for the 4.3 V8.
It's simply the better breathing heads that allows more power. The new 4 valve 5.5L V8 in the '07 S-class is another example - its displacement has been bumped up over the old 5.0 V8 M113 engine, so that's another factor as well.
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Joined: Mar 2002
Posts: 2,781
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From: The Heights, CA
Tesla Model S
Originally Posted by 55 ON IT
Simple fact. HP sells cars, torque wins races.
The 430 will take a G35 on the highway because of its gearing, but off the line a stock 430 will get its *** handed to it by a stock G35 (though not embarrassingly so).
Super Member
Joined: Jul 2003
Posts: 507
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W208 CLK55K, GTR, RS5
From reading numerous post, I always thought that the G35 vs. E36 M3 was always a driver's race. I've also read that numerous CLK430s have beaten or were pretty even with E36 M3s. If I remember correctly, I believe you've posted a kill awhile back also (pre f/i). So, to say a G35 would hand a CLK430 it's *** may be a little harsh.
But, I believe my quote is pretty accurate. Kind of goes hand and hand with the whole E55/M5 debate.
But, I believe my quote is pretty accurate. Kind of goes hand and hand with the whole E55/M5 debate.
Thread Starter
Super Member
Joined: May 2005
Posts: 558
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From: New York City
2000 CLK 430
Originally Posted by 55 ON IT
I've also read that numerous CLK430s have beaten or were pretty even with E36 M3s. If I remember correctly, I believe you've posted a kill awhile back also (pre f/i).
usually when I see an M3 on the road - I concede to them... maybe next time i'll try testing my 430.
I'll make sure to get a CLK 55 Airbox on my car first though. Give me an extra umph...
Newbie
Joined: May 2006
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clk430
I had that engine, and while bulletproof in terms of service, I wished I had not traded it for for my old '97 E320. Back now with a CLK430 Cabriolet, and while "sluggish" off the line, it handily takes care of the ricerockets on the highway. The Infiniti/Nissan engine is very quick but lacks any real umph once you get past 70. I've found my whip is very quick 70 -110, not to mention much more stable
