• VAC Motorsports creates a 700+ horsepower VF-Engineering supercharged stroker 4.4 liter E9X M3 S65 V8 with a billet dry sump oil system

      Now this is a serious build that gets tremendous nod of approval from BimmerBoost. VAC built an S65 V8 out of an E9X M3 with forged internals including low compression pistons with increased stroke from new rods an a 4.4 liter crank. The end result is a bottom end good for well over 700 horsepower with forced induction as seen pictured below with the VF-Engineering Vortech based centrifugal supercharger kit.

      Not only is the motor built, stroked, and supercharged VAC also gave it a billet dry sump system. Some people believe the stock S65 V8 oiling system is up to par but tuners in the know who have disassembled these motors seem to agree on premature bearing wear which the oiling system likely is contributing too. Whether one believe the stock oiling system is up to par or not the billet dry sump system here is definitely a large improvement over the stock system and certainly offers a bit of peace of mind.

      Very nice work here by VAC and hopefully they can provide more info on how the dry sump system gets along with supercharged S65 V8 applications and if there is any need to worry about extra stress on the crank. This is definitely one of the baddest S65 V8 forced induction builds out there, great job VAC and give us a dyno shoot as soon as you can.

      This article was originally published in forum thread: VAC Motorsports creates a 700+ horsepower VF-Engineering supercharged stroker 4.4 liter E9X M3 S65 V8 with a billet dry sump oil system started by Sticky View original post
      Comments 59 Comments
      1. Torgus's Avatar
        Torgus -
        Click here to enlarge Originally Posted by Mr.Squeeze Click here to enlarge
        As promised for @LostMarine I went by VAC and looked at this 700 crank HP motor and took some pictures for you.
        Out of curiosity why do you say 700 crank? Did they put it on an engine dyno or something?
      1. Mr.Squeeze's Avatar
        Mr.Squeeze -
        Click here to enlarge Originally Posted by Torgus Click here to enlarge
        Out of curiosity why do you say 700 crank? Did they put it on an engine dyno or something?
        That's what I was told by the rep at the show, it has only seen a engine dyno.
      1. Torgus's Avatar
        Torgus -
        Click here to enlarge Originally Posted by Mr.Squeeze Click here to enlarge
        That's what I was told by the rep at the show, it has only seen a engine dyno.
        Thanks man, so with drivetrain loss what 600whp or so 625 tops? Do you know peak boost PSI? Is the blower the limit at this point? Sick engine. I hope it goes in a track car.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Torgus Click here to enlarge
        Thanks man, so with drivetrain loss what 600whp or so 625 tops? Do you know peak boost PSI? Is the blower the limit at this point? Sick engine. I hope it goes in a track car.
        This is capable of well over 600 whp. It could crank out 700+ I would think.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Mike@VAC Click here to enlarge
        We are going to start a project on our E90 M3 soon - that will make a lot more torque (esp down low than we are used to seeing
        Tell me more!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Mike@VAC Click here to enlarge
        Sticky and I have had this discussion before (you too, I think?) and I clearly advised against it for any car that will see the street. I do know people who have street legal cars with DSK and it's pretty foolish IMO - BUT it's their choice Click here to enlarge
        So you don't think any street car should run the dry sump setup?
      1. Torgus's Avatar
        Torgus -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        This is capable of well over 600 whp. It could crank out 700+ I would think.
        I am not doubting you as I am sure you know much more about the engine/platform than me and I hope I am wrong given the supposed cost of this engine build.

        That being said, why wouldn't you want to make the most you could on the engine dyno? The only thing I can think of is not wanting to stress the engine before it is broken in right? But if that is the case why bother with an engine dyno at all? I thought breaking an engine in is better done in a car vs. an engine dyno...

        @Mike@VAC would you mind commenting?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Torgus Click here to enlarge
        That being said, why wouldn't you want to make the most you could on the engine dyno?
        What do you mean? This motor has not been dyno'd yet from what I understand. The HP figure is just an estimate of over 700 horsepower capability.
      1. Torgus's Avatar
        Torgus -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        What do you mean? This motor has not been dyno'd yet from what I understand. The HP figure is just an estimate of over 700 horsepower capability.
        Squeeze said it was already on an engine dyno. I was curious if VAC could confirm or deny this was the case, and then comment on the output:

        Originally Posted by Mr.Squeeze Click here to enlarge
        That's what I was told by the rep at the show, it has only seen a engine dyno.


      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Torgus Click here to enlarge
        Squeeze said it was already on an engine dyno. I was curious if VAC could confirm or deny this was the case, and then comment on the output:

        Originally Posted by Mr.Squeeze http://www.bimmerboost.com/images/bu...post-right.png
        That's what I was told by the rep at the show, it has only seen a engine dyno.


        With boost on the engine dyno or without? For break in? Lot's of details we would need.
      1. Mr.Squeeze's Avatar
        Mr.Squeeze -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        With boost on the engine dyno or without? For break in? Lot's of details we would need.

        With boost SI blower ,and I think 12 psi I apologize for not having all the details.

        From what I gather it really hasn't been pushed yet with the 4.4 I would have the YSI like your car is going to have.
      1. Torgus's Avatar
        Torgus -
        Click here to enlarge Originally Posted by Mr.Squeeze Click here to enlarge
        With boost SI blower ,and I think 12 psi I apologize for not having all the details.

        From what I gather it really hasn't been pushed yet with the 4.4 I would have the YSI like your car is going to have.

        How much can you expect the YSI to produce at peak boost without overspinning? 16psi?
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by Mr.Squeeze Click here to enlarge
        With boost SI blower ,and I think 12 psi I apologize for not having all the details.

        From what I gather it really hasn't been pushed yet with the 4.4 I would have the YSI like your car is going to have.
        Is VF doing the tuning or just using their supercharger system components (manifold, blower, brackets, belts, intake, etc)
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Torgus Click here to enlarge
        How much can you expect the YSI to produce at peak boost without overspinning? 16psi?
        Much more than that, in the low 20's.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        Is VF doing the tuning or just using their supercharger system components (manifold, blower, brackets, belts, intake, etc)
        I would think both. It can be remote tuned as well.
      1. Mike@VAC's Avatar
        Mike@VAC -
        This VF SC 4.4 has not been on a dyno yet. Others have been. Another will be on the dyno in a few weeks - I will get video, promise Click here to enlarge



        Click here to enlarge Originally Posted by Torgus Click here to enlarge
        Squeeze said it was already on an engine dyno. I was curious if VAC could confirm or deny this was the case, and then comment on the output:

        Originally Posted by Mr.Squeeze http://www.bimmerboost.com/images/bu...post-right.png
        That's what I was told by the rep at the show, it has only seen a engine dyno.


      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Mike@VAC Click here to enlarge
        This VF SC 4.4 has not been on a dyno yet. Others have been. Another will be on the dyno in a few weeks - I will get video, promise Click here to enlarge
        I can't wait... seriously can't wait.
      1. Mike@VAC's Avatar
        Mike@VAC -
        Me too, dyno tuning been postponed like 3 times for various reasons beyond our control. The engine has been done for months!!
      1. Torgus's Avatar
        Torgus -
        updates?