Weistec Stage 3 C63
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From: UK
Stage 3 63
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C63 AMG
I have this pulley sitting in the garage, too scared to try it.
Did you Ice it durning these runs? IATs didn't rise too much.
Looks like it leaned up a whole tick. Did you give it time to adapt? What fuel did you use with the smaller pulley?
My car is running so good right now, 20,000km on it under stage 3... This is tempting, but I need to grow some more *****.
Did you Ice it durning these runs? IATs didn't rise too much.
Looks like it leaned up a whole tick. Did you give it time to adapt? What fuel did you use with the smaller pulley?
My car is running so good right now, 20,000km on it under stage 3... This is tempting, but I need to grow some more *****.
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C63 Coupe
Now when you say "low boost" pulley is that what comes on the standard stage 3? Do you have a facelift with MCT or Pre facelift with 7G? I have to talk to weistec about the pulley sizes you know I want that 60mm :-)
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C63 AMG
The 60mm doesn't come with it. You need to ask for it. You need to know what you are doing if you are going to try that pulley. IATs need to be monitored, new spark plugs, no low rpm full throttle, ice tank, is stay away from hot ambient temps.
The 67mm is plenty, way more than you will even be able to put down on the street..
I spin 2nd gear all the way to redline line like I'm in first. It's been cold here lately, 5-6c, I spun third gear at 100kmh on the freeway, scared the hell out of me. When it's cold out the car feels like it has 100hp more.
The 67mm is plenty, way more than you will even be able to put down on the street..
I spin 2nd gear all the way to redline line like I'm in first. It's been cold here lately, 5-6c, I spun third gear at 100kmh on the freeway, scared the hell out of me. When it's cold out the car feels like it has 100hp more.
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C63 AMG
That is a lot of torque
I would estimate the boost increase close to 3 psi (2 / 0.7)
2 to make the torque and 1 consumed by the blower and increased charge temp
Torque increase 12.5%
1 psi ~ 6-7 % torque increase
Assumed net at the manifold with an eff of 70%
I would estimate the boost increase close to 3 psi (2 / 0.7)
2 to make the torque and 1 consumed by the blower and increased charge temp
Torque increase 12.5%
1 psi ~ 6-7 % torque increase
Assumed net at the manifold with an eff of 70%
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C63 Coupe
The 60mm doesn't come with it. You need to ask for it. You need to know what you are doing if you are going to try that pulley. IATs need to be monitored, new spark plugs, no low rpm full throttle, ice tank, is stay away from hot ambient temps.
The 67mm is plenty, way more than you will even be able to put down on the street..
I spin 2nd gear all the way to redline line like I'm in first. It's been cold here lately, 5-6c, I spun third gear at 100kmh on the freeway, scared the hell out of me. When it's cold out the car feels like it has 100hp more.
The 67mm is plenty, way more than you will even be able to put down on the street..
I spin 2nd gear all the way to redline line like I'm in first. It's been cold here lately, 5-6c, I spun third gear at 100kmh on the freeway, scared the hell out of me. When it's cold out the car feels like it has 100hp more.
As far as the pulley IAT's I have one step colder plugs on the car and have the trunk tank on order. One thing I've been thinking about for the future is a meth kit based off MAF voltage pre manifold since this works great cooling iat's and the twin screws as done on many domestics. Wouldn't be anything for octane just strictly iat reduction. Maybe I should start off with the 67mm and work my way up? Is it just a pulley swap and diff ECU tune?
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C63 Coupe
The 60mm doesn't come with it. You need to ask for it. You need to know what you are doing if you are going to try that pulley. IATs need to be monitored, new spark plugs, no low rpm full throttle, ice tank, is stay away from hot ambient temps.
The 67mm is plenty, way more than you will even be able to put down on the street..
I spin 2nd gear all the way to redline line like I'm in first. It's been cold here lately, 5-6c, I spun third gear at 100kmh on the freeway, scared the hell out of me. When it's cold out the car feels like it has 100hp more.
The 67mm is plenty, way more than you will even be able to put down on the street..
I spin 2nd gear all the way to redline line like I'm in first. It's been cold here lately, 5-6c, I spun third gear at 100kmh on the freeway, scared the hell out of me. When it's cold out the car feels like it has 100hp more.
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C63 AMG
Low rpm full throttle puts a lot of pressure on the pistons, rods and crank. Imagine clicking your 10spd into a high gear going slowly and trying to pedal as fast as u can, it's very hard, stuff can break.
You don't get a retune with the 60mm. The ecu is left to adapt on it's own, so afr must be monitored and race gas used to protect from detonation.
You don't get a retune with the 60mm. The ecu is left to adapt on it's own, so afr must be monitored and race gas used to protect from detonation.
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C63 Weistec Supercharged
Merc thanks for the info there really isn't much if any info on these cars with the blower it's crazy. My car is a '12 coupe with MCT + valve body/TCU so I think it's strong enough to hold. I also have the black series coolers + speed driven trans pan. Traction will deff be a big issue and eventually a wide body will be done to fit some big tires.
As far as the pulley IAT's I have one step colder plugs on the car and have the trunk tank on order. One thing I've been thinking about for the future is a meth kit based off MAF voltage pre manifold since this works great cooling iat's and the twin screws as done on many domestics. Wouldn't be anything for octane just strictly iat reduction. Maybe I should start off with the 67mm and work my way up? Is it just a pulley swap and diff ECU tune?
As far as the pulley IAT's I have one step colder plugs on the car and have the trunk tank on order. One thing I've been thinking about for the future is a meth kit based off MAF voltage pre manifold since this works great cooling iat's and the twin screws as done on many domestics. Wouldn't be anything for octane just strictly iat reduction. Maybe I should start off with the 67mm and work my way up? Is it just a pulley swap and diff ECU tune?
It reduced IAT by 10 degrees which we were all impressed with.....he then added a 150 shot NOS kit for good measure lol which pushed it to 820bhp and also helped reduce IAT further at WOT
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From: Naperville, IL/Chicago
2008 CLK63 Black Series 2012 C63 Black Series 2014 SLS Black Series
NICE! You can go even smaller....trust me. I think my low boost pulley is smaller than that lol. These motors are stout, you can push a ton more boost through a stock P31 motor, the trans will go before the motor. Let's just put it this way, Weistec machined me a special pulley for the Michigan Mile event which made 790whp on my C BS
Enjoy it man! Get ready to buy some tires
Enjoy it man! Get ready to buy some tires
Last edited by jrcart; Sep 29, 2014 at 09:20 PM.
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C63
Hey those of you running a blower on your m156 motors, specifically with high boost (north of 10 PSI) did you reduce your stock compression ratios? The reason I am asking is I though these cars stock have a 11.5 to 1 compression ratio which is not really ideal for boost. Yes it can be done but it is not ideal for pistons or connecting rods.
My past experience with built motors you typically don't want to exceed 9.5 compression.
My past experience with built motors you typically don't want to exceed 9.5 compression.
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From: Texas
10 C six trizzle
correct- with the cam adjustment they can bleed off the extra. Compression ratio is always a balance between boost, compression and octane requirements. Keeping the high comp ratio allows the motor to retain the n/a v8 spunk we all love about the m156. Most all out performance cars now that are running race gas or e85 are running 11:1 with 30+psi. thats why 1000whp is so ubiquitous today.
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c63 coupe p31weistec stg3 SOLD,2013 C63 BLACK SERIES.
NICE! You can go even smaller....trust me. I think my low boost pulley is smaller than that lol. These motors are stout, you can push a ton more boost through a stock P31 motor, the trans will go before the motor. Let's just put it this way, Weistec machined me a special pulley for the Michigan Mile event which made 790whp on my C BS
Enjoy it man! Get ready to buy some tires
Enjoy it man! Get ready to buy some tires
