VRP 70mm Clutched Supercharger Pulley and Tune Combo (M113k)
Junior Member
Joined: Nov 2024
Posts: 73
Likes: 16
It’s kinda hard to have a boost leak. Worth replacing the surge tank gaskets, but anything more is a bit of a chore.
I had the blower off, and did the bypass seal, surge tank gaskets, intake gasket and blower to intercooler seal.
It could be done in a long evening. At this point, all the rubber in these cars is basically plastic now regardless of where you live.
I had the blower off, and did the bypass seal, surge tank gaskets, intake gasket and blower to intercooler seal.
It could be done in a long evening. At this point, all the rubber in these cars is basically plastic now regardless of where you live.
Super Member
Joined: Nov 2017
Posts: 924
Likes: 164
From: Virginia
N/A
Man, some of you have some small upper pulleys. I have only run the 83mm and it is more than enough. My power thirst was quenched after the 83mm and tune. More than enough juice, especially for a daily hauler of kiddos/the wife around often! My advice is always the same; you can throw all the biggest power adders to the car, any car, but without supporting mods and knowing exactly what you want with the car will dictate what you should do. In some cases, more isn't better or necessary. I don't know where most of you live, but where I am, there is always some congestion, road work, cops or something that prevents more than a gear to a gear and a half pull. On the highway, it's worse sometimes. I've found my perfect spot for plenty more power than stock and useable without having the power and taking away from the car's experience.
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Joined: Dec 2005
Posts: 4,057
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From: NJ
2009 SL63 AMG
The 77mm pulley (what I went with on my M113K car) makes excellent power but you really do need the supporting modifications.
Having driven a different car with the 83mm pulley since then, it's plenty for someone looking to keep things OEM+.
A 70mm pulley seems excessive for the stock supercharger. Of course the company trying to sell you it would claim otherwise.
Having driven a different car with the 83mm pulley since then, it's plenty for someone looking to keep things OEM+.
A 70mm pulley seems excessive for the stock supercharger. Of course the company trying to sell you it would claim otherwise.
MBWorld Fanatic!
Joined: Jul 2014
Posts: 3,331
Likes: 586
2005 e55 AMG
Man, some of you have some small upper pulleys. I have only run the 83mm and it is more than enough. My power thirst was quenched after the 83mm and tune. More than enough juice, especially for a daily hauler of kiddos/the wife around often! My advice is always the same; you can throw all the biggest power adders to the car, any car, but without supporting mods and knowing exactly what you want with the car will dictate what you should do. In some cases, more isn't better or necessary. I don't know where most of you live, but where I am, there is always some congestion, road work, cops or something that prevents more than a gear to a gear and a half pull. On the highway, it's worse sometimes. I've found my perfect spot for plenty more power than stock and useable without having the power and taking away from the car's experience.
PS Just my opinion, I am not a VRP fan and would recommend sourcing parts elsewhere.
PS Just my opinion, I am not a VRP fan and would recommend sourcing parts elsewhere.
Thread Starter
Junior Member
Joined: May 2024
Posts: 35
Likes: 2
G 55 AMG
The 77mm pulley (what I went with on my M113K car) makes excellent power but you really do need the supporting modifications.
Having driven a different car with the 83mm pulley since then, it's plenty for someone looking to keep things OEM+.
A 70mm pulley seems excessive for the stock supercharger. Of course the company trying to sell you it would claim otherwise.
Having driven a different car with the 83mm pulley since then, it's plenty for someone looking to keep things OEM+.
A 70mm pulley seems excessive for the stock supercharger. Of course the company trying to sell you it would claim otherwise.
Now focusing on 77 one. The problem is that VRP stage 3 will not fit to the G class platform. Secondary heat exchanger no way to be located in front of the radiator.
So If going 77 with flash & belt, than bare minimum would still be 550 injectors plus the split cooling?
Or do I have to have anything else?
Damn, thats whole of a knowledge this pulley thing.....
Last edited by BullittAZK; Mar 12, 2025 at 04:16 AM.
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Joined: Jan 2011
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2006 E55
A lot of truth to that. I really don't want to replace my exhaust with long tubes because it's a pain in the ****. I would like to put on some type of bolt on headers because of how restrictive the stock exhaust manifolds are. I don't need to be the fastest guy on the block, I'm too old for that but I would like a bit more power.
I had RennTech log manifolds on my prior 06 - nice bit of power and TQ and coupled with a smaller upper and dyno tune, it broke some hearts. I would also add that I did not notice any low-end grunt loss at all like the long tube guys complain about for around town (which makes sense due to boost pressure drops with long tubes). But those bigger name companies want serious dough for their products - I just didn't see the need to go aftermarket headers with the current car. You really can't go wrong, aftermarket headers truly help the car breath up top, decrease engine bay temps and overall they help make cleaner power. You can argue both ways.
My final thought: anything is better than the bottleneck horrid logs AMG put on these cars - if I had one complaint to the engineers and builders, it would be that.
Best of luck in whatever route you take ..
Last edited by ArmoE55; Mar 12, 2025 at 11:35 AM.
MBWorld Fanatic!
Joined: Dec 2005
Posts: 4,057
Likes: 341
From: NJ
2009 SL63 AMG
Thanks for the reply- am done with 70 pulley- especially when we talk about G 55 AMG.
Now focusing on 77 one. The problem is that VRP stage 3 will not fit to the G class platform. Secondary heat exchanger no way to be located in front of the radiator.
So If going 77 with flash & belt, than bare minimum would still be 550 injectors plus the split cooling?
Or do I have to have anything else?
Damn, thats whole of a knowledge this pulley thing.....
Now focusing on 77 one. The problem is that VRP stage 3 will not fit to the G class platform. Secondary heat exchanger no way to be located in front of the radiator.
So If going 77 with flash & belt, than bare minimum would still be 550 injectors plus the split cooling?
Or do I have to have anything else?
Damn, thats whole of a knowledge this pulley thing.....
Regarding larger injectors, I would discuss that with your tuner.
Reviewing data logs, there wasn't a need for me with the 77mm pulley unless I wanted to push further.
Split cooling seems to be a popular modification. There are more robust options than the VRP kit if you wanted to go down that route: https://www.projectb5.com/product/pb...it-cooling-kit
Also don't forget the upgraded HE pump. The Bosch "010 pump" is a direct replacement and a nice upgrade.
Thread Starter
Junior Member
Joined: May 2024
Posts: 35
Likes: 2
G 55 AMG
Good call, IMHO.
Regarding larger injectors, I would discuss that with your tuner.
Reviewing data logs, there wasn't a need for me with the 77mm pulley unless I wanted to push further.
Split cooling seems to be a popular modification. There are more robust options than the VRP kit if you wanted to go down that route: https://www.projectb5.com/product/pb...it-cooling-kit
Also don't forget the upgraded HE pump. The Bosch "010 pump" is a direct replacement and a nice upgrade.
Regarding larger injectors, I would discuss that with your tuner.
Reviewing data logs, there wasn't a need for me with the 77mm pulley unless I wanted to push further.
Split cooling seems to be a popular modification. There are more robust options than the VRP kit if you wanted to go down that route: https://www.projectb5.com/product/pb...it-cooling-kit
Also don't forget the upgraded HE pump. The Bosch "010 pump" is a direct replacement and a nice upgrade.
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Senior Member
Joined: Apr 2014
Posts: 250
Likes: 19
From: Orange County
2004 W211 E55 AMG
Hey Chris,
I had RennTech log manifolds on my prior 06 - nice bit of power and TQ and coupled with a smaller upper and dyno tune, it broke some hearts. I would also add that I did not notice any low-end grunt loss at all like the long tube guys complain about for around town (which makes sense due to boost pressure drops with long tubes). But those bigger name companies want serious dough for their products - I just didn't see the need to go aftermarket headers with the current car. You really can't go wrong, aftermarket headers truly help the car breath up top, decrease engine bay temps and overall they help make cleaner power. You can argue both ways.
My final thought: anything is better than the bottleneck horrid logs AMG put on these cars - if I had one complaint to the engineers and builders, it would be that.
Best of luck in whatever route you take ..
I had RennTech log manifolds on my prior 06 - nice bit of power and TQ and coupled with a smaller upper and dyno tune, it broke some hearts. I would also add that I did not notice any low-end grunt loss at all like the long tube guys complain about for around town (which makes sense due to boost pressure drops with long tubes). But those bigger name companies want serious dough for their products - I just didn't see the need to go aftermarket headers with the current car. You really can't go wrong, aftermarket headers truly help the car breath up top, decrease engine bay temps and overall they help make cleaner power. You can argue both ways.
My final thought: anything is better than the bottleneck horrid logs AMG put on these cars - if I had one complaint to the engineers and builders, it would be that.
Best of luck in whatever route you take ..
MBWorld Fanatic!
Joined: Jan 2011
Posts: 2,159
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2006 E55
Yes. Logs = log style manifolds, exhaust manifold, shorties, shorty headers. Many names for aftermarket headers. For instance, Kleemann headers are mid-length, companies like MBH, ARH are long tubes.
Senior Member
Joined: Apr 2014
Posts: 250
Likes: 19
From: Orange County
2004 W211 E55 AMG
And the factory logs do not allow enough flow? im bone stock right now working on the interior first, sound system, suspension and the out of nowhere oil leak that appeared but i do plan on doing a mild mod dump once i get it dialed in.
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Joined: Nov 2017
Posts: 924
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From: Virginia
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https://www.apbparts.com/uploads/7/0/2/3/70236957/s452502671500347390_p10526_i3_w4000.jpeg?width=256 0
Aftermarket
https://mbworld.org/forums/w211-amg/...surements.html
Last edited by Fountain35; Mar 12, 2025 at 09:11 PM.
MBWorld Fanatic!
Joined: Jul 2014
Posts: 3,331
Likes: 586
2005 e55 AMG
It always amazed me that with the log manifolds and small throttle body that these engines made the power they did. Minimal they need an 82mm throttle for sure. Hell the M156 has two throttle body's LOL
I said all along that if the throttle body, the exhaust manifolds where larger and we had forged pistons like later MB engines the M113K would have been absolutely incredible in my eyes.
I said all along that if the throttle body, the exhaust manifolds where larger and we had forged pistons like later MB engines the M113K would have been absolutely incredible in my eyes.
MBWorld Fanatic!
Joined: Jan 2011
Posts: 2,159
Likes: 160
2006 E55
It always amazed me that with the log manifolds and small throttle body that these engines made the power they did. Minimal they need an 82mm throttle for sure. Hell the M156 has two throttle body's LOL
I said all along that if the throttle body, the exhaust manifolds where larger and we had forged pistons like later MB engines the M113K would have been absolutely incredible in my eyes.
I said all along that if the throttle body, the exhaust manifolds where larger and we had forged pistons like later MB engines the M113K would have been absolutely incredible in my eyes.
Senior Member
Joined: Apr 2014
Posts: 250
Likes: 19
From: Orange County
2004 W211 E55 AMG
great info thanks for that!
MBWorld Fanatic!
Joined: Jul 2014
Posts: 3,331
Likes: 586
2005 e55 AMG
It always amazed me that with the log manifolds and small throttle body that these engines made the power they did. Minimal they need an 82mm throttle for sure. Hell the M156 has two throttle body's LOL
I said all along that if the throttle body, the exhaust manifolds where larger and we had forged pistons like later MB engines the M113K would have been absolutely incredible in my eyes.
I said all along that if the throttle body, the exhaust manifolds where larger and we had forged pistons like later MB engines the M113K would have been absolutely incredible in my eyes.
6.2L like the M156
Forged pistons ,steel sleeves
better exhaust manifolds that really flow
82mm throttle body
At least a 2.2-2.3L supercharger and better inter cooler system
There would be NOTHING that could have touched it to this day because you would have been looking at 650hp stock for sure plus if modded.....800hp+
Now I'm just dreaming....................
Member
Joined: Apr 2023
Posts: 75
Likes: 15
W211 e55 amg
Since you're running stock injectors + 77mm, do you have an idea of what afr you are seeing? How long have you had it on the car?
Member
Joined: Apr 2023
Posts: 75
Likes: 15
W211 e55 amg
I'd stay no more than 77mm clutched and let the bypass do its thing to save the engine.
I'm 77mm clutched, shorty headers, tune, BWK, Big cooling system with CWA100 pump, and an intake with stock injectors. It's silly fast. I don't want any more power, I only want safety for the combination. I'm in Texas and I can do +10-20 degrees over ambient temp as is, with very quick cool down.
I think for summer when its over 100*, I'll need the secondary heat exchanger.
I'm 77mm clutched, shorty headers, tune, BWK, Big cooling system with CWA100 pump, and an intake with stock injectors. It's silly fast. I don't want any more power, I only want safety for the combination. I'm in Texas and I can do +10-20 degrees over ambient temp as is, with very quick cool down.
I think for summer when its over 100*, I'll need the secondary heat exchanger.
