Sulaco

http://www.club202.com/forums/showth...anifold-Photos

Pic links are dead

savage6br

Here is a pic of my previous C43 at Sears Pt at a full cornering load. I had just passed that Lotus and was pulling away. Notice how flat the car and tires stay to the pavement.

DRBC43AMG

It certainly does. Great stuff!

eFifty5AMG

Want this. Looks like an absolutely amazing build. Good luck with your sale. :drool:

Sulaco

I'm blown away that this car is naturally aspirated and puts out the way it does. Someone needs to get cracking on finding out how we can all benefit from his work. If these numbers are all accurate, these mods would put a C43 faster than a C43 with a 5.4 swap. Finally a way to squeeze adequate power out of these engines without bolting on a supercharger!

benzslo

The car has the 5.4 swap already, its not a 4.3 car.

Sulaco

I know that. But not every C43 can get a 5.4l swap. I'm just pointing out this opens up new upgrade options for all C43 owners, not just the ones lucky enough to find and install a suitable new engine.

benzslo

keep in mind that gains will not be the same on a 4.3. 5.4 draws alot more air so the intake may be less of a restriction than on a smaller motor. with that said, there are always things you can do to improve an engine. gettting the heads ported would probably be best option. full exhaust. doing the intake like this guy did, it's not going to be an easy task. I know Mercedes does not recommend splitting the intake ever, they say it won't seal up properly again.. not saying it can't be done just saying. a 5.4 swap is the easiest way to get real power from the car IMO.

Sulaco

Agreed. I think part of why these cars weren't more popular was the lack of power options. At the time, you pretty much had a C43 or, if you were super rich, a C43 with a 5.4l swap, and that was that. Only when they started to pay attention and dumped the M156 into the C63 did they have a C-class AMG with some serious power options.

In retrospect, even the w203 C32 has way more options because it's FI. But the wee C43 still has very, very limited options for more power. Makes me sad.

Buy a 98-2000 M3 and look at your options!

benzslo

well to be fair, there have been a few companies that have made supercharger kits for these cars, I have seen some with them on and they work pretty well. there have also been headers made for them and camshafts too. If you want to go further you can also do some internal engine work.

you can just only do so much with 4.3 liters of naturally aspirated engine. keep in mind in 1998, 300 hp was pretty much unheard of. it's not like it is today..

Sulaco

truth

ejrchef

I want that shift knob.

KJI3jflarryfe93

if you refer to chromed shiftknob with AMG logo, I have one for sale

savage6br

The manifold with the individual velocity stacks makes a huge difference. Like I said the normal 5.5 engine starts to lose power and fall off at high rpm around 5000 rpm. With the manifold and getting the right intake length to take into account the Waves that are generated when the intake valve opens and closes keeps the power way up all the way to redline! it is building power, very hard till it hits redline and shifts.

DRBC43AMG

How about some individual throttle bodies like Kinslers? That would be great, if cost is not a problem...

Sulaco

If the intake stacks can be molded, I wonder if there's a way to make a 3d printable intake insert. We could buy one of many junk yard m113 intakes, print and then fine-sand the printed insert, install it into the intake. Sure, might take some honing to get right, but cheap and easily produced.

savage6br

Maybe, but to be honest, each intake velocity stack is slightly different from the others. There might be a couple that are very similar, but for the most part they aren't. Which is too bad, or I would have removed one and made a mold for you guys and then let you go at it. I spent literally, what I though would be maybe 10 hours work, into something like 50 to 60 hours, maybe 70 plus hours doing this work. It was every night for about two weeks, but I knew it would wake up the engine. I made an aluminum buck, or forming die to help shape each intake stack as you have to change them at the base from round to a rectangle. Then you have make sure you use the right expoy which hold up to gas and oil and make sure all the parts are cleaned so there is is no oils from your hands or on the manifold and then attach the velocity stack. Maybe I can pull it apart this weekend and get everyone some pics. We will see. Tomorrow I go to have a huge hernia surgically repaired and so hopefully i'm moble enough to do some work in the garage, this weekend. After all I just need to pull it apart. But the gasket sealer I used is from Toyota and it is a bear to remove. It sticks parts together very well, but the downside is then trying to take them apart. I need to just put my head down and do it, so you guys are giving me the incentive to get it done, thanks. Jeff

cm60k

Hey Jeff,

Do you mean the red sealant from Toyota, i used it two times to resealing the intake,,

if you can do one intake with some pics., im soo sure many fan here will be greatFULL & your Email box will suffering.....

ZAYED,,

DRBC43AMG

I imagine such modifications would need some appropriate ECU mapping to get everything right. That means long hours on a dyno, but if everything works, you could end up with some serious HP figures. Just my 2cents...

Jeff, I hope all goes well for your surgery. Take care

Nice stuff here: http://www.jenvey.co.uk/
and these on a M113 would be gold

ECTurboGSX

Individual Throttle Bodies is a whole other level. Then you can tune each cylinder individually. You can fine tune your machine or really mess it up. My bike has throttle bodies for each cylinder that I've had to synch and if you're off just a little bit, you can feel it, especially near closed throttle.

Speedy, I get the concept of the harmonics in the air box (same concept behind the buffeting when you open the rear windows in the car without the front windows opening) but I can't say that I've seen the math behind calculating the intake tube length. I presume the length is optimum at a given throttle body position and RPM and the rest is a compromise? Do you just use the fact that it is a certain degree V8 with a given firing order or does it start to get into valve size, overlap, cam duration, etc?

savage6br

Yes, I did take sometime to get the tuning right. Using my Innovative Air/Fuel ratio meter with wide band 02 sensorrs. wasbptr I was able to send the data to Kleeman at the time and they would alter the map to fix the Air/Fuel ratio and then send the ECU back to me to try and see it that fixed it. I finallly got an ECU that worked really well and then left it alone. Now I have a well tuned ECU and all of the parts are working harmony. So now the AMG C43/55 is working really well.

All I need now is a buyer to sell this beast to!!!, so that I can get a work truck for business work. The Car has been my passion for several years, but I really need a work truck for my position with the company. I hate the thought of selling it. But I need to do it for work right away so I can get a right off on my taxes. Jeff

Anyhow, it you have any interest in this C43/55 let know and maybe we can work out a deal. Jeff

savage6br

Well, Guys the car is gone. I sold it and hate the fact I don't have it anymore. It worked so well and was so fast. I never did a full top speed run do the being on public raods. About 170 was as fast as I ever went. It was still pulling pretty good when I shut it down. My passenger agreed to try it out, but once we passed 150 mph he started to change his mind. I pushed on a little more then slowit down. I'm thinking it might have hit at least 180 or 185 mph. Hard to say, the drag due to the air gets so high at those speeds. Anyhow, what the car did best was corner like it was on rails. No body lean, 275mm tires in the rear and 255 in the front gave it lots of traction. you could rally push it. And becuase you never really had to slowdown much on the corners, I never really had to abuse the motor, just maybe 3/4 throttle at most to get up to my road speed and get ready forthe next corner. I don't know that he new owner will ever get to the limits of the car. I'm actually sure he won't. So alot of the work I put into it is just wasted on him. He did say, this thing just doesn't know slow. It just begs you to go fast all the time. 100 mph felt like 55 mph. I had taken the front lower cover and kept it attached with the blots to the rear on the engine or chassis, but attached the front to the lower section of the front bumper to smooth the air going underthe car and then put air diffussers on the cover hich helped to smooth out air flow even more and it helped lower wind noise and develop down force. Geez I did a lot of stuff to that car. All gone. Sellaers remorse, Big Time.

eFifty5AMG

Sad to see it go.. Was trying to sell mine to purchase yours. Your car was an absolute marvel. You've dedicated & invested abundant amounts of prestigious work into it. Hopefully the new owner can truly embrace the quality and craftsmanship that you've created. Best of luck to you & your future builds.

ProjectC55

Yep and sellers remorse is why I'm very hesitant to sell mines!!!! jeff you can still get a 5.4L motor for cheap on ebay and dump it in a CLK430.

svt ricco

Is he from the Bay Area?