Best route to 500 fhp in a C55?
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Do you have any before and after shots of the heads? I have seen the after shots in another thread you posted in. Thanks.
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05 C55 AMG
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I guess I agree. At this stage of the game a full supercharger kit might not be worth it unless the car is pristine with low mileage. I think they are definitely still worth some headers, cams and an intake.
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C63 507 AMG DA Car #19
I've had fun with my clk55 eaton build. Kleemann did the install, and with my basic tools I keep it maintained. I prob would not rec this mod or any blower for people who don't want to wrench a little.
This is my hobby not my 100% daily driver so that makes a little difference.
Gl
This is my hobby not my 100% daily driver so that makes a little difference.
Gl
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From: Sweden
2011 C63 AMG, 589hp
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There really isn't much out there about the Renntech unit. It looks like is made by Lysholm. One thread mentioned it as being inbetween the Autorotor and Eaton for efficiency.
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From: New Zealand
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Thanks, it is a bit rough around the edges in stock form but pretty much what I expect from mass produced parts. Here is the after photo again for anyone wanting to compare side by side.
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2011 C63 AMG, 589hp
These edges you can see in the ports aren´t the whole problem.
First, the edges can be up to 2mm big.
But what´s worst, the short radius down to the valve is really really a joke.
The radius in the floor down to the valve that is.
Really really destroys flow with bad short radius.
First, the edges can be up to 2mm big.
But what´s worst, the short radius down to the valve is really really a joke.
The radius in the floor down to the valve that is.
Really really destroys flow with bad short radius.
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These edges you can see in the ports aren´t the whole problem.
First, the edges can be up to 2mm big.
But what´s worst, the short radius down to the valve is really really a joke.
The radius in the floor down to the valve that is.
Really really destroys flow with bad short radius.
First, the edges can be up to 2mm big.
But what´s worst, the short radius down to the valve is really really a joke.
The radius in the floor down to the valve that is.
Really really destroys flow with bad short radius.
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From: Sweden
2011 C63 AMG, 589hp
It´s very rough and un-even, almost like a staircase.
And the edges you can see in before picture is all the way around the ports.
Fix this and a nice valveseatjob och grind a backcut on the valves then you got heads that support a lot of power, and gains quite a bit.
Can´t say exactly what gains there are, i´ve read about 20-30hp depending on setup.
With big camshafts there´s a lot more gains.
But, this is ofcourse depending on the setup.
And the edges you can see in before picture is all the way around the ports.
Fix this and a nice valveseatjob och grind a backcut on the valves then you got heads that support a lot of power, and gains quite a bit.
Can´t say exactly what gains there are, i´ve read about 20-30hp depending on setup.
With big camshafts there´s a lot more gains.
But, this is ofcourse depending on the setup.
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From: Sweden
2011 C63 AMG, 589hp
Found an another before picture.
In the most important area to get proper VE in cylinders you need to 'diffuse' flow over the valve to increase pressure, this will fill the cylinders better as the earlier areas in inlet is to build up speed and flow in the gasses.
The speed act as an flywheel, and the air keep moving even after the pressure is even in the inlet and cylinder, can you make the pressure higher in the inlet then you will ill the cylinders better.
And the most important area is,, just underneeth the valve upstream from cylinder.
And Mercedes/AMG finds this sharp edges good enough..
I say.. nahhh.. things can improve a lot.
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From: Sweden
2011 C63 AMG, 589hp
But it´s well worth it.
I money i spent here in Sweden about 220 dollar to lift the heads.
If your gaskets are okey at valvecover and inlet/exhaust.
the only you really need to change is the headgaskets and new valvestemseals.
and i got ~110mph+ at 1/4mile with no ecu tune yet.
I money i spent here in Sweden about 220 dollar to lift the heads.
If your gaskets are okey at valvecover and inlet/exhaust.
the only you really need to change is the headgaskets and new valvestemseals.
and i got ~110mph+ at 1/4mile with no ecu tune yet.
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From: San Diego, CA
2005 C55 black on black aka DVS C55, 2007 C230 sport silver on black for the boss
