Close

Page 1 of 3 123 LastLast
Results 1 to 25 of 61
  1. #1
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,838
    Rep Points
    31,573.4
    Mentioned
    2066 Post(s)
    Rep Power
    316


    Reputation: Yes | No

    PPM-Racing (Pure Performance Motorsport) 4.2 liter S38 inline-6 stroker kit - $6900

    The BMW S38 is one of (if not arguably the best) the most impressive inline-6 cylinder motors ever produced by BMW. We will leave that debate for another article however and instead give you the details on the PPM-Racing 4.2 liter stroker kit. It includes forged pistons, H-Beam connecting rods, and a billet 4340 crankshaft. It is applicable to either 3.6 or 3.8 liter S38 motors from the BMW E28 M5 and BMW E34 BMW M5 respectively.

    The kit can be customized and accommodate naturally aspirated or boosted builds with compression ratio choices for the pistons including 8.0:1, 8.5:1, 10.0:1, 11.5:1, or 12.0:1. Piston sizes are either 94.5 or 95.0 mm. The kit is designed to use a 1x compression ring. Awesome? Yes, awesome.

    Pricing: $6900

    Included:

    - 6x forged pistons
    - Rings, pins, locks
    - 6x H-Beam connecting rods
    - ARP2000 rod bolts
    - 98mm Billet 4340 crankshaft

    Click here to enlarge

    Click here to enlarge

    Click here to enlarge

  2. #2
    Join Date
    Feb 2010
    Location
    NJ
    Posts
    13,460
    Rep Points
    58.0
    Mentioned
    318 Post(s)
    Rep Power
    0


    Reputation: Yes | No
    Any power figures?

  3. #3
    Join Date
    Nov 2010
    Location
    le Paris
    Posts
    6,653
    Rep Points
    -225.0
    Mentioned
    48 Post(s)
    Rep Power
    0


    Reputation: Yes | No
    germanboost.com/showthread.php?995-PPF-E30-S38-Turbo&p=11396#post11396
    Click here to enlarge Originally Posted by Sticky
    Can't the S38 go to 4.2 liters or so?
    Haha. Are you prophet or what? lol

  4. #4
    Join Date
    Apr 2010
    Posts
    4,608
    Rep Points
    3,236.6
    Mentioned
    24 Post(s)
    Rep Power
    33


    Reputation: Yes | No
    Holy $#@! this is awesome, the inline six is bigger in displacement than an S65. I would make this thing 12:1 compression all motor and rev the $#@! out of it.

  5. #5
    Join Date
    Feb 2010
    Location
    Corpus Christi, Texas, United States
    Posts
    3,053
    Rep Points
    1,236.6
    Mentioned
    6 Post(s)
    Rep Power
    13


    Reputation: Yes | No
    Click here to enlarge Originally Posted by DBFIU Click here to enlarge
    Holy $#@! this is awesome, the inline six is bigger in displacement than an S65. I would make this thing 12:1 compression all motor and rev the $#@! out of it.
    Or the same but with 8:1 compression with a one of the T4 EFR choices and throw as much boost as it can take. Probably would have one of the fattest/fastest spooling I6's around!

    E85 for fueling of course. Or methanol if you are the drag racer 2000HP type. Click here to enlarge

  6. #6
    Join Date
    Apr 2010
    Posts
    4,608
    Rep Points
    3,236.6
    Mentioned
    24 Post(s)
    Rep Power
    33


    Reputation: Yes | No
    ^ thats cool and all but a 4.2 liter inline 6 with 12:1 compression at 8500 RPM sounds so nice!!!

    Turbos shmurbos
    Some people live long, meaningful lives.

    Other people eat shit and die.

    I'm not racist, I hate everybody equally; especially fat people.


    Click here to enlarge

  7. #7
    Join Date
    Sep 2010
    Posts
    14
    Rep Points
    35.7
    Mentioned
    0 Post(s)
    Rep Power
    0


    Reputation: Yes | No
    Click here to enlarge Originally Posted by DBFIU Click here to enlarge
    ^ thats cool and all but a 4.2 liter inline 6 with 12:1 compression at 8500 RPM sounds so nice!!!

    Turbos shmurbos
    I have a feeling it wouldn't last long at 8500 rpm...

  8. #8
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,838
    Rep Points
    31,573.4
    Mentioned
    2066 Post(s)
    Rep Power
    316



    Reputation: Yes | No
    Click here to enlarge Originally Posted by DBFIU Click here to enlarge
    Holy $#@! this is awesome, the inline six is bigger in displacement than an S65. I would make this thing 12:1 compression all motor and rev the $#@! out of it.
    13:1 e85 all motor 8k aggressive cams $#@! ya

  9. #9
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,838
    Rep Points
    31,573.4
    Mentioned
    2066 Post(s)
    Rep Power
    316



    Reputation: Yes | No
    Click here to enlarge Originally Posted by radasaurus Click here to enlarge
    I have a feeling it wouldn't last long at 8500 rpm...
    You wouldn't last long at 8500 rpm.

  10. #10
    Join Date
    Nov 2010
    Location
    Spokane
    Posts
    149
    Rep Points
    207.4
    Mentioned
    0 Post(s)
    Rep Power
    3


    Reputation: Yes | No
    What cylinder head types are available for this motor? Non vanos, single vanos, dual vanos?

    The reason I ask, is I think I remember hearing someone say that either this engine was available as a vanos motor later in its lifetime, or a later engine's cylinder head with vanos fit on the engine.

  11. #11
    Join Date
    Nov 2010
    Location
    Spokane
    Posts
    149
    Rep Points
    207.4
    Mentioned
    0 Post(s)
    Rep Power
    3


    2 out of 2 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by metrik Click here to enlarge
    What cylinder head types are available for this motor? Non vanos, single vanos, dual vanos?

    The reason I ask, is I think I remember hearing someone say that either this engine was available as a vanos motor later in its lifetime, or a later engine's cylinder head with vanos fit on the engine.
    Looks like I was making things up, VANOS never touched these motors. @Sticky, I'd love it if you wrote an article about this motor, like the excellent one you did on the s54 and s65.

  12. #12
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,838
    Rep Points
    31,573.4
    Mentioned
    2066 Post(s)
    Rep Power
    316



    Reputation: Yes | No
    Click here to enlarge Originally Posted by metrik Click here to enlarge
    Looks like I was making things up, VANOS never touched these motors. @Sticky , I'd love it if you wrote an article about this motor, like the excellent one you did on the s54 and s65.
    Those articles are incredibly time consuming. I likely will do a top 5 BMW motors article.

  13. #13
    Join Date
    Aug 2010
    Location
    Bay Area
    Posts
    977
    Rep Points
    779.1
    Mentioned
    5 Post(s)
    Rep Power
    8


    Reputation: Yes | No
    thanks $#@!. i just spent a bunch of money already. damnit now this too!

  14. #14
    Join Date
    Aug 2010
    Posts
    1,278
    Rep Points
    460.0
    Mentioned
    8 Post(s)
    Rep Power
    5


    Reputation: Yes | No
    this is right next to the ford falcon inline six now that this stroker kit is available

  15. #15
    Join Date
    Sep 2010
    Posts
    14
    Rep Points
    35.7
    Mentioned
    0 Post(s)
    Rep Power
    0


    1 out of 1 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    You wouldn't last long at 8500 rpm.
    what the $#@! is that supposed to mean? The fact is its a VERY long stroke crank on a straight six that has harmonic issues past 7k with the stock crank. I am not denigrating the kit or the idea of an 8.5k rpm 4.2L s38 screamer (which would be awesome), but it's a pipe dream.

  16. #16
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,838
    Rep Points
    31,573.4
    Mentioned
    2066 Post(s)
    Rep Power
    316



    Reputation: Yes | No
    Click here to enlarge Originally Posted by radasaurus Click here to enlarge
    what the $#@! is that supposed to mean? The fact is its a VERY long stroke crank on a straight six that has harmonic issues past 7k with the stock crank. I am not denigrating the kit or the idea of an 8.5k rpm 4.2L s38 screamer (which would be awesome), but it's a pipe dream.
    Didn't mean anything it was a joke. You are right that it is a long stroke and the piston speeds will be high. The S54 has this same issue but has survived 9000 rpm.

  17. #17
    Join Date
    Sep 2010
    Posts
    14
    Rep Points
    35.7
    Mentioned
    0 Post(s)
    Rep Power
    0


    Reputation: Yes | No
    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Didn't mean anything it was a joke. You are right that it is a long stroke and the piston speeds will be high. The S54 has this same issue but has survived 9000 rpm.
    I am not aware of any s54s reliably revving to 9000 rpm in something other than a drag race application (where very little time is spent at such high rpm). The piston speeds would not be the biggest problem, but rather the damaging vibrations due to resonance. Even the s54, which was designed for high rpms, suffers when pushed much beyond its stock redline. The s38's harmonic damper is not as robust (especially in the b35 and b36 versions) nor is it designed for the same rpm range.

    Anyway, I'd love to see what numbers this kit puts down in any form. Any word on someone actually building one of these motors? I'm thinking it would go nice with a 6466 - tractor pulling torque.

  18. #18
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,838
    Rep Points
    31,573.4
    Mentioned
    2066 Post(s)
    Rep Power
    316



    Reputation: Yes | No
    Click here to enlarge Originally Posted by radasaurus Click here to enlarge
    I am not aware of any s54s reliably revving to 9000 rpm in something other than a drag race application (where very little time is spent at such high rpm).
    Yes, at full throttle and big power so high stress. It isn't like anyone sits at 9000 rpm in any street application.

  19. #19
    Join Date
    Jun 2011
    Posts
    3
    Rep Points
    7.1
    Mentioned
    0 Post(s)
    Rep Power
    0


    1 out of 1 members liked this post. Reputation: Yes | No
    Any possibility that those issues of high rpm have been fix with this billet crank shaft?

  20. #20
    Join Date
    May 2012
    Posts
    6
    Rep Points
    41.6
    Mentioned
    0 Post(s)
    Rep Power
    0


    2 out of 2 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by jrode34m5 Click here to enlarge
    Any possibility that those issues of high rpm have been fix with this billet crank shaft?
    Yes i am sure with billet crank and ppm custom S38 balancer the problem was fixedClick here to enlarge

  21. #21
    Join Date
    Apr 2010
    Location
    Earth
    Posts
    5,159
    Rep Points
    526.1
    Mentioned
    4 Post(s)
    Rep Power
    6


    Reputation: Yes | No
    I vote 8.5.1 turbo setup with a gtx42 turbo redline at a safe 8200 rpms. That thing would have a monster powerband.
    Click here to enlargeClick here to enlarge

  22. #22
    Join Date
    Feb 2010
    Location
    Corpus Christi, Texas, United States
    Posts
    3,053
    Rep Points
    1,236.6
    Mentioned
    6 Post(s)
    Rep Power
    13


    Reputation: Yes | No
    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    I vote 8.5.1 turbo setup with a gtx42 turbo redline at a safe 8200 rpms. That thing would have a monster powerband.
    I'm right there with you brotha! None of this weak NA nonsense. Click here to enlarge

  23. #23
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    117,838
    Rep Points
    31,573.4
    Mentioned
    2066 Post(s)
    Rep Power
    316



    Reputation: Yes | No
    Click here to enlarge Originally Posted by Tom S85B58 Click here to enlarge
    Yes i am sure with billet crank and ppm custom S38 balancer the problem was fixedClick here to enlarge

    S85B58? You have a stroker or just a fan?

    How do you know this does not have high RPM issues?

  24. #24
    Join Date
    Sep 2010
    Posts
    14
    Rep Points
    35.7
    Mentioned
    0 Post(s)
    Rep Power
    0


    Reputation: Yes | No
    Click here to enlarge Originally Posted by Tom S85B58 Click here to enlarge
    Yes i am sure with billet crank and ppm custom S38 balancer the problem was fixedClick here to enlarge
    I doubt the problem is fixed...it is a matter mostly of the geometry of the crank, not so much the material it's made from. A custom damper would help, but it would probably not solve the "problem".
    I don't think its too much of a problem though, monster torque with a redline 7-7.5k should provide a pretty awesome power band and longevity.

  25. #25
    Join Date
    Apr 2010
    Posts
    4,608
    Rep Points
    3,236.6
    Mentioned
    24 Post(s)
    Rep Power
    33


    1 out of 1 members liked this post. Reputation: Yes | No
    You are all wrong and my opinion is better.
    Some people live long, meaningful lives.

    Other people eat shit and die.

    I'm not racist, I hate everybody equally; especially fat people.


    Click here to enlarge

Page 1 of 3 123 LastLast

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •