• Harrop Engineering releases short teaser of their Eaton TVS1740 positive displacement M3 S65 V8 supercharger kit running

      The last time we saw the Harrop Engineering TVS based positive displacement supercharger kit was back in May of this year. In that article it was mentioned that a lot of work was still ahead especially in the area of tuning before this kit would ready to be released. Harrop Engineering clearly has been working on it and posted a teaser video you can see below showing the kit running on the S65 V8 with an M3 on the dyno.


      Unfortunately, no further details are provided with the video which just shows the wheels moving. No dyno figures yet but this is a complicated process and there is a reason nobody has brought a positive displacement M3 kit to market. It's very, very hard to do.

      Pricing is expected to be in the $12,990 area with a release this Fall.

      The main thing to take away is it's still coming and according Harrop relatively soon. BimmerBoost wishes them well and wants to make it clear when this comes to market it will be an achievement worthy of great respect. Good luck to all involved.

      This article was originally published in forum thread: Harrop Engineering releases short teaser of their Eaton TVS1740 positive displacement M3 S65 V8 supercharger kit running started by Sticky View original post
      Comments 62 Comments
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Ging Click here to enlarge
        Ill have to look of the factory docs i was looking at when i saw that or maybe i had to many wobbly pops and im off my rocker ...
        Look it's fine but the S54 was 11.5:1 and the S65 is 12.0:1 just like the S85 as it shares the same basic internal components including the bore/stroke. The GTS motor doesn't change the bore just the stroke with the same compression pistons.
      1. LostMarine's Avatar
        LostMarine -
        I really wish the local guy doing the harrop didnt pull it off. would love to have lined them up Click here to enlarge
      1. Group.america's Avatar
        Group.america -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        People looking for a value should play elsewhere other than with boosted E9X M3's. If deciding between new kits once again a few grand here or there does not matter.

        Will turbos be more money? Sure, but not much more.

        Yes... as far as value goes if one looks at buying an E9X M3 + going supercharger route one THEN thinks they should wait and see what happens with the new M4 and it's competition (new Mercs, C7 Vettes etc)....

        If the M4 is as good as projected I would have a hard time forking over the $40k+ for a good used E9x M3 (08-09) and then another $20k for the S/C and mods when a better solution on a brand new car with turbos may be available very soon...

        Either that or buy one of the already modded M3's that will be sold in the next year or so with an already successful platform

        A turbo E9x M3 would be interesting development or a S/C solution with real low down torque... anyway you slice it it is an exciting time in the M3/M4 world
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by Group.america Click here to enlarge
        Yes... as far as value goes if one looks at buying an E9X M3 + going supercharger route one THEN thinks they should wait and see what happens with the new M4 and it's competition (new Mercs, C7 Vettes etc)....

        If the M4 is as good as projected I would have a hard time forking over the $40k+ for a good used E9x M3 (08-09) and then another $20k for the S/C and mods when a better solution on a brand new car with turbos may be available very soon...

        Either that or buy one of the already modded M3's that will be sold in the next year or so with an already successful platform

        A turbo E9x M3 would be interesting development or a S/C solution with real low down torque... anyway you slice it it is an exciting time in the M3/M4 world
        problem is some people like the V8 over I6

        and as far as a S/C with tq down low. ill take that challenge , because mine does Click here to enlarge
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        People looking for a value should play elsewhere other than with boosted E9X M3's. If deciding between new kits once again a few grand here or there does not matter.

        Will turbos be more money? Sure, but not much more.
        Let's remember that not everybody has the cash flow to dump $50k+ into a build. And that the E9x M is an out of production car, so it's falling into the affordable/mod-conscious range (whether it holds the value or continues to depreciate when the F3x M3/M4 is released).

        The E9x is going to be a $35-$45k used car (depending on year, mileage, options, etc), and for new supercharger/turbo kit money (which still no concrete info has been released on outside a picture of a prototype manifold & ballpark estimate), you'd be able to get a PROVEN option with quality HP return: a used supercharger kit, full catless exhaust & possibly some other goodies (Apex wheels, KW coilovers, interior gauges, etc)
      1. benzy89's Avatar
        benzy89 -
        AND if people wanted the best bang for buck (aka, "Value") with modded Euro-Muscle, they'd be buying a C63 and spending half the money on a Weistec setup that yields a lot more power
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        Let's remember that not everybody has the cash flow to dump $50k+ into a build. And that the E9x M is an out of production car, so it's falling into the affordable/mod-conscious range (whether it holds the value or continues to depreciate when the F3x M3/M4 is released).

        The E9x is going to be a $35-$45k used car (depending on year, mileage, options, etc), and for new supercharger/turbo kit money (which still no concrete info has been released on outside a picture of a prototype manifold & ballpark estimate), you'd be able to get a PROVEN option with quality HP return: a used supercharger kit, full catless exhaust & possibly some other goodies (Apex wheels, KW coilovers, interior gauges, etc)
        Once again modifying the M3 is not a value proposition. For what this kit costs new and what turbos cost new it is a minor difference. IMO, negligible.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        AND if people wanted the best bang for buck (aka, "Value") with modded Euro-Muscle, they'd be buying a C63 and spending half the money on a Weistec setup that yields a lot more power
        What Weistec setup is half the money with more power?
      1. onisyndicate's Avatar
        onisyndicate -
        Meh its almost apples to apples when it comes to modding a C63 or M3

        http://media.caranddriver.com/files/2012-bmw-m3-vs-2012-mercedes-benz-c63-amg-comparison-test-car-and-driver2012-bmw-m3-vs-2012-mercedes-benz-c63-amg-jan12.pdf


        Yes C63 is faster. But the M3 did have a better Skid Pad and faster slalom.

        I think i'd enjoy a Positive Displacement S/C M3. I prefer torque over HP anyways.

        But the C63 has a boat load of Torque from the factory so it would get my choice!

        On a side not though. When it comes to modding a car it should made and modded for you and your personal preference no one else!
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        What Weistec setup is half the money with more power?
        Same price as a 650 kit ($15k) and you get Weistec S3 which offfers 100+ HP/240+ TQ, so already there's A LOT more area under the curve. And if you build the S65 motor to compete (like in Drew's VT3), you're looking at ~$25/30k range for just the motor/supercharger build.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        Same price as a 650 kit ($15k) and you get Weistec S3 which offfers 100+ HP/240+ TQ, so already there's A LOT more area under the curve. And if you build the S65 motor to compete (like in Drew's VT3), you're looking at ~$25/30k range for just the motor/supercharger build.
        It's a different type of supercharger but where is the more power argument for half the money you are making? It doesn't exist.

        You have to build the M156 too if you want to compete with a built motor M3. It's the same thing and the M3 is also lighter with a DCT plus higher redline. Personally, I'm looking forward to seeing how the built motor M156 supercharged cars stack up to mine and it might change some perspectives.
      1. Group.america's Avatar
        Group.america -
        i think I did some work out of the options a week ago and the best risk reward for value was a Max PSI turbo'ed E46 M3 but I suspect from all the videos and in person evidence I have seen, an E9X with Gintani or Evolve S/C is pretty hard to beat around a track or on the street on a quality/value/performance for $$ basis

        Had a guy thrash (beat that is) a friend's McLaren every way 'til Sunday with an E93 M3 with some nasty S/C and mods on her... simply scary at 0 to 150 mph
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Group.america Click here to enlarge
        i think I did some work out of the options a week ago and the best risk reward for value was a Max PSI turbo'ed E46 M3 but I suspect from all the videos and in person evidence I have seen, an E9X with Gintani or Evolve S/C is pretty hard to beat around a track or on the street on a quality/value/performance for $$ basis

        Had a guy thrash (beat that is) a friend's McLaren every way 'til Sunday with an E93 M3 with some nasty S/C and mods on her... simply scary at 0 to 150 mph
        People underestimate the S65 V8 with boost. It's a potent platform.
      1. Group.america's Avatar
        Group.america -
        Don't think I would ever underestimate a V8 that can revvvvvvvvv so HIGH... bloody amazing machine... I think Benzy and I were referring to relative value power...
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by Group.america Click here to enlarge
        Don't think I would ever underestimate a V8 that can revvvvvvvvv so HIGH... bloody amazing machine... I think Benzy and I were referring to relative value power...
        My car is a whore, anyone can drive her Click here to enlarge
      1. Group.america's Avatar
        Group.america -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        My car is a whore, anyone can drive her Click here to enlarge
        I would say the same thing about my ex but as far as my dog goes... no one can have him !

        Click here to enlarge
      1. mfatuation's Avatar
        mfatuation -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        I really wish the local guy doing the harrop didnt pull it off. would love to have lined them up Click here to enlarge
        It really didn't make sense for me to leave it on since there was no tune for the hardware. Keep in mind I only had my car for 4 days before sending it out to California. I got it back 3 months later... I've been in touch with Harrop, you may get your chance after all...
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by mfatuation Click here to enlarge
        It really didn't make sense for me to leave it on since there was no tune for the hardware. Keep in mind I only had my car for 4 days before sending it out to California. I got it back 3 months later... I've been in touch with Harrop, you may get your chance after all...
        SOunds great man, you headed down to Mpact Click here to enlarge ?
      1. mfatuation's Avatar
        mfatuation -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        SOunds great man, you headed down to Mpact Click here to enlarge ?
        We'll see what happens... As for Mpact, way too far for me.
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by mfatuation Click here to enlarge
        .. I've been in touch with Harrop, you may get your chance after all...
        care to elaborate on that?