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Thread: Billet & Forged Crankshafts

  1. #21
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    945

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    i think our race stuff starts life as a 10" diameter forged billet.............kinda heavy

  2. #22
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    Think I'd like to try some of that billet cola, even better if they had it in 'pepper............
    jd
    '96 Dodge 3500HD cc 2wd drw............'89 GMC 3500 cc 4wd drw
    5.9 12v #10TST 6sp SBC13-1.375.......6.5TD EFI maxEtorq v2.0 DSG
    DODGE makes it CUMMINS shakes it.....4L80E 205 4.10 Dana60\70HD
    6 in a row makes it go.......................Grandpa's big truck

  3. #23
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    Thumbs up

    Member Hans Hauschild recently sent me the following photos of GEP's new 6.5. You can see the GEP banner behind the engine.





    I was told last summer that GEP was planning to increase power from 205 to 235. Hans indicated to me that GEP is now saying 250!

    Part of what I heard last summer involved forged steel crankshafts, a block girdle, cooling system mods and fuel system upgrades.

    A asked an independent OEM yesterday about the new engine and the billet crankshafts. I was told "Crankshafts are being stockpiled - approx 400 to 500. The machining takes longer because of the material. The first ones are made from billet steel to run tests."

    It appears from the above images that the girdle is sectioned a bit (notched) on each side to show its design.

    Notice what looks like an electric fan-clutch....

    It's interesting that they used 1989-95 accessory drive components, though the belt tensioner is in a non-stock location.

    Some have theorized that the compression ratio has been reduced to accomodate the 250 hp rating.

    More news when it becomes available....

    Jim

  4. #24
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    Nov 2002
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    Martinsville, IN
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    Using machined from solid (billet) components for testing is very common, even in the aerospace world. Large scale production usually would wind up being made from forgings.

    That girdle looks very similar to the one that Andrew Ashwill made for his engine project. His was "billet", this one is cast.

  5. #25
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    Sep 2001
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    Check out the t-stat housing, looks like it'll better accomodate DB2-type MFI injection pump, it's wide enough in appearance to hold dual stats.

    Hmm...

    Thanks for the pics Jim.

    Pron for us Diesel heads...

    J
    1982 C10 SCSWB 6.5TD, mods too extensive to list. (13.69 1/4 mile @94.6 MPH) RACE TRUCK
    1982 C10 SCSWB 6.2NA, 2.73 700
    1986 C10 SCLWB 6.2TD 3.73 700
    1989 V20 SUB 6.2NA, 3.73 400
    1994 G20 VAN 6.5NA, 3.42 60E
    1994 K20LD ECSWB 6.5TD, 3.42 80E
    1995 K20 SUB 6.5TD, Wrecked, ran into by stupid teen.
    1995 C3500HD DRW 6.5TD, 12' Flatbed 5.13 80E
    1995 C3500HD DRW 6.5TD, 18' Rollback Wrecker 4.63 80E
    1994 C20HD ECLWB 6.5TD 3.73 80E Wifes Truck.
    1995 C20LD ECSWB 6.5TD 3.73 80E
    1995 K20LD SCLWB 6.5TD 3.73 80E
    1996 K30 DRW 6.5TD 4.10 80E
    1997 C10 Tahoe 2Door 2WD 5.7L to 6.5 Conversion Underway

  6. #26
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    Arrow

    Looks like intercooler plumbing on top of the engine as well...

    Jim

  7. #27
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    Arlington,MA U.S.
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    I am glad they are still working the 6.5 but why go with a girdle when they could just design a deep skirt block?
    1998 6.5 2500 4X4 dynatrac pro 60, ARB, 35"BFG's
    06 D Max Express 5"MBRP EFI live

  8. #28
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    Jan 2001
    Location
    New Hampshire - Live Free or Die
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    I like the polished billet oil filter...
    The Constitution needs to be re-read, not re-written!

    If you can't handle Dr. Seuss, how will you handle real life?

    Current oil burners: MB GLK250 BlueTEC, John Deere X758
    New ride: MB GLS450 - most stately
    Gone but not forgotten: '87 F350 7.3, '93 C2500 6.5, '95 K2500 6.5, '06 K2500HD 6.6, '90 MB 350SDL, Kubota 7510

  9. #29
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    Dec 2003
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    SC
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    Cool!!! Glad to see new stuff and development for the future.

    Just day dreaming really but I had pondered some thoughts about some type of REALLY BEEFY oil pan in conjunction with main girdle for a bolt on way of helping stiffen up things on bottom. That girdle looks pretty good. Also new pan to increase oil capacity.

    I wonder if they incorporated any more or better oil cooling and or oil capacity with new bottom end "extension" ????
    97 5spd K2500 Ext Cab short Bed ~160K miles.
    TM, 3" downpipe & 4" exhaust, remote FSD, remote oilfilter, Gauges: EGT, Boost, Fuel Pressure, B&W Gooseneck Turnover ball, Prodigy Brake Controller. Hi-Temp Hydraulic Oil Cooler Lines.

  10. #30
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    Sep 2001
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    Lubbock TX, USA
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    Quote Originally Posted by JohnC
    I like the polished billet oil filter...
    Prolly Chrome
    1982 C10 SCSWB 6.5TD, mods too extensive to list. (13.69 1/4 mile @94.6 MPH) RACE TRUCK
    1982 C10 SCSWB 6.2NA, 2.73 700
    1986 C10 SCLWB 6.2TD 3.73 700
    1989 V20 SUB 6.2NA, 3.73 400
    1994 G20 VAN 6.5NA, 3.42 60E
    1994 K20LD ECSWB 6.5TD, 3.42 80E
    1995 K20 SUB 6.5TD, Wrecked, ran into by stupid teen.
    1995 C3500HD DRW 6.5TD, 12' Flatbed 5.13 80E
    1995 C3500HD DRW 6.5TD, 18' Rollback Wrecker 4.63 80E
    1994 C20HD ECLWB 6.5TD 3.73 80E Wifes Truck.
    1995 C20LD ECSWB 6.5TD 3.73 80E
    1995 K20LD SCLWB 6.5TD 3.73 80E
    1996 K30 DRW 6.5TD 4.10 80E
    1997 C10 Tahoe 2Door 2WD 5.7L to 6.5 Conversion Underway

  11. #31
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    Montana
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    I've wondered what the angled forms indicate in this image. Any ideas?


  12. #32
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    Nov 2000
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    Beltsville MD USA
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    Clearance for a stroker crank

  13. #33
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    Nov 2002
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    Martinsville, IN
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    3,163

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    Cast stiffening ribs for strength.

  14. #34
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    Mar 2000
    Location
    AB Canada
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    What about meat for splayed main bolts?
    98 GMC sierra 2500 ext cab 4x4 auto tr 6.5 td 252000 km. needs new engine, next project
    95 GMC sierra LE 2500 ext cab sh box 4x4 auto tr 6.5 td 328.000 km. my wife's truck .remote pmd on cooler
    89 GMC sierra SLE 1500 ext cab 4x4 auto tr 6.2 720000 km engine swap at 665000 km because of broken oil cooler line. 6 bolt wheels.
    Waldon wheelloader repowered with a 6.2 na

  15. #35
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    Apr 2001
    Location
    Newberg Oregon
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    I too am currious as to why they did not cast the new blocks with a deep skirt and use cross bolted mains as was done in the Ford 427 Y blocks.

    Far better design.

    May have something to do with exisitng equipment and the overall cost to redesign the beast.

    Probably more cost effective to just beef up the trouble areas and add the girdle instead.

    The T stat area does not supprise me at all. The military is still using the DB2 pumps and probably always will to keep away from the nightmare of the electronics.

    The DS4 would be a poor choice for a rig going into battle.

    The Hummers are simple trucks that have simple mechanics that can be worked on under the poorest of conditions.
    To bolt on the complexities of the DS4 would be foolish me thinks.

    The DS4 was not done to the civilian rigs to make our life any better, it was to meet the EPA BS that is being shoved down our throat.

    I can see though that this new engine should be a nice retrofit into our trucks.

    With that big girdel on the bottom I wonder if there is enough room to fit it all into a pickup or Burb without issues with the front axle????????? Just a thought.

    Robyn
    (1) 1995 Suburban 2500 4x4
    (1) 1997 Astro
    (1) 2005 Suburban (Papa Smurf)
    THIS IS BOW TIE COUNTRY

  16. #36
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    Apr 2001
    Location
    Newberg Oregon
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    Just another thought.
    After looking at the nice pix Jim posted, I think that big spacer/girdle is made of aluminum.

    Same color as the front cover and such and if it was iron they probably would have painted it.
    Unless its painted silver to just look kewl. ???????????

    I would like to get a close look at that engine, as in touchy feely ;0)
    I am also suspicious that those large stiffener bulges on the sides may have bolts going through them possibly counter bored into the lower rail area.

    Get us a piccy of the inside of this beastie ;0)
    Robyn
    (1) 1995 Suburban 2500 4x4
    (1) 1997 Astro
    (1) 2005 Suburban (Papa Smurf)
    THIS IS BOW TIE COUNTRY

  17. #37
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    Jan 2001
    Location
    Knoxville,Tennessee
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    2,639

    Default Add to the mystery

    Whats with the crank case vent hose. Does it run back into the filler neck or is that a second one into a "Y" going to the turbo? And with the center mounted turbo, will it fit in Pick Up's? Hmmmmmmmmmmmmmmmm...........
    "The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government."
    -Patrick Henry


    A5150nut
    2006 K3500 D/A
    94 6.5 4x4 5spd Sold

  18. #38
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    usa
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    Where you guys (and gal) seeing all this detail - all I ever get is great blank spaces with really huge letters to the effect of www.TheDieselPage.com

    i think this computer hates me...............
    jd
    '96 Dodge 3500HD cc 2wd drw............'89 GMC 3500 cc 4wd drw
    5.9 12v #10TST 6sp SBC13-1.375.......6.5TD EFI maxEtorq v2.0 DSG
    DODGE makes it CUMMINS shakes it.....4L80E 205 4.10 Dana60\70HD
    6 in a row makes it go.......................Grandpa's big truck

  19. #39
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    Apr 2001
    Location
    CA
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    13,573

    Arrow

    Quote Originally Posted by gmctd
    Where you guys (and gal) seeing all this detail - all I ever get is great blank spaces with really huge letters to the effect of www.TheDieselPage.com

    i think this computer hates me...............

    If you are seeing that image, you are either not logged in, or are logged in using the incorrect URL/IP.

    Log off.
    Click www.thedieselpageforums.com/tdpforum and log in w/ your user/pass.

    If your login URL contains numbers, well.....there's your problem....

    If you are still not seeing the correct images, you have a browser security or cookie issue. No cookies, and you will loose your login priveleges in just a few minutes, even if it still shows you logged in.

    If you still can't get it, send me an email.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  20. #40
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    Arrow

    robyn said: I too am currious as to why they did not cast the new blocks with a deep skirt and use cross bolted mains
    I've wondered the same thing.

    Here's a photo I took while visiting DMAX in 2001, showing the deep skirt design used in the Duramax 6600. Side captured main caps would be nice for the 6.5... Jim


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