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308 V12 conversion begins

Discussion in '308/328' started by mk e, Oct 9, 2007.

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  1. PittsS2APilot

    PittsS2APilot Formula Junior

    Jun 29, 2007
    857
    Gulfport MS
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    Joe
    #3476 PittsS2APilot, Mar 8, 2010
    Have you decided what you are gonna call this thing when finished? Will the "308" on the rear read "312" or something similar? :)
     
  2. randyleepublic

    randyleepublic Formula Junior

    Dec 2, 2007
    825
    Beautiful Reno
    #3477 randyleepublic, Mar 9, 2010
    If I can't afford to drive it like that, I won't buy one. Who wants a piece of frickin sculpture? Hell, they are way, way cheaper than an Aston Zagato.

    They have a 2.5 and a 2.8. The 2.8 gets about 150 on a good day. Mark? What could you do with 2.8 liters and 12 valves? (Not that I want to distract you or anything - this project is years away...)
     
  3. f308jack

    f308jack F1 Rookie

    Jun 7, 2007
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    Jack Verschuur
    #3478 f308jack, Mar 9, 2010
    These are way too rare to hot-rod.
     
  4. randyleepublic

    randyleepublic Formula Junior

    Dec 2, 2007
    825
    Beautiful Reno
    #3479 randyleepublic, Mar 9, 2010
    Nothing is too rare to hot rod! Besides, it's not like I'd be stuffing a small block in there. Just taking the stock V6 and giving it the mk e optimization treatment. Ugo Zagato would be proud! Anyway, back to our regularly scheduled thread...
     
  5. mk e

    mk e F1 World Champ

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    #3480 mk e, Mar 9, 2010
    100hp/liter is easy, 140hp/ liter is possible in a full out build.
     
  6. mk e

    mk e F1 World Champ

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    #3481 mk e, Mar 9, 2010
    Last edited by a moderator: Sep 7, 2017
  7. randyleepublic

    randyleepublic Formula Junior

    Dec 2, 2007
    825
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    #3482 randyleepublic, Mar 9, 2010
    As the kids say, You da man!! Now, where's that lottery ticket? :D
     
  8. mk e

    mk e F1 World Champ

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    #3483 mk e, Mar 10, 2010
    Last edited by a moderator: Sep 7, 2017
    I finished up the stub liner and made the casting. I used about 2/3 bondo and 1/3 resin...they said they hate brittle castings and I was afraid the resin only would be brittle but bondo is too thick to self-level very well.....the mixture should be fine. it looks like a few air bubbles on top, but that won't bother anything. Now it sits and it should be ready to come apart tonight and mail tomorrow
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  9. randyleepublic

    randyleepublic Formula Junior

    Dec 2, 2007
    825
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    #3484 randyleepublic, Mar 10, 2010
    Did you use something as a release agent?
     
  10. mk e

    mk e F1 World Champ

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    #3485 mk e, Mar 10, 2010
    Yes, I forgot to mention that part. I wiped everything down with silicone grease to fill in and surface imperfects then top coated with WD-40 for good measure…..i don’t see how ANYTING could stick to combination.
     
  11. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
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    John!
    #3486 Ferraripilot, Mar 10, 2010
    very neat stuff Mark. Gosh I remember the first combustion chamber mold I made with Bondo. I sent it off to Ross racing pistons thinking they were going to call me asking if it was some sort of joke. Turns out it was better than most.... according to them anyway.
     
  12. mk e

    mk e F1 World Champ

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    #3487 mk e, Mar 10, 2010
    Last edited by a moderator: Sep 7, 2017
    The mold popped right apart and it looks at least 1/2 way decent...at least to me. It's boxed and will go JE tomorrow. It's a small, light box so I may splerge and sending it priority 2-3 day mail instead of 7 day ground :)

    Now I can get back to ports.
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  13. Conquest351

    Conquest351 Karting

    Mar 13, 2008
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    Brian Hamilton
    #3488 Conquest351, Mar 10, 2010
    Friggin sweet! Now lets just hope you don't change your mind about something having to do with the valves, combustion chamber shape/design, and cylinder bore size. LOL
     
  14. mk e

    mk e F1 World Champ

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    #3489 mk e, Mar 11, 2010
    That is part of the reason behind just ordering sh*t......more doing and less changing my mind.
     
  15. mk e

    mk e F1 World Champ

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    #3490 mk e, Mar 11, 2010
    More grinding this morning….another hour or so and I should be ready to move on to roughing head #2.
     
  16. duck.co.za

    duck.co.za Formula 3

    Jan 9, 2007
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    #3491 duck.co.za, Mar 12, 2010
    Last edited by a moderator: Sep 7, 2017
  17. mk e

    mk e F1 World Champ

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    #3492 mk e, Mar 12, 2010
    ohhhh.....it appears mounting the TBs will be a tad more work than I was thinking.

    I wonder how it would flow with the TBs turned sideways. That might help the linkage situation.

    Doing it the hard way, it looks there is room but the problem is the TPS mount and the very long ducati linkage arm......which could both be fixed.
     
  18. duck.co.za

    duck.co.za Formula 3

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    #3493 duck.co.za, Mar 12, 2010
    How many TPS do we need ?? One per bank ? Could get two per bank one at either end ?
     
  19. mk e

    mk e F1 World Champ

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    #3494 mk e, Mar 12, 2010
    1 is all we need. 1 per bank maybe if it's a 2 ecu solution, but even then 1 would still do.
     
  20. tknobby

    tknobby Rookie

    Mar 12, 2009
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    #3495 tknobby, Mar 12, 2010
    Mark,

    Once you finish with the head welding are you going to have them heat treated prior to the final machining?

    Tom...
     
  21. mk e

    mk e F1 World Champ

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    #3496 mk e, Mar 12, 2010
    That would be way too smart.

    Actually heat treating with all the weld on it scares me more than just going as is so I’ll just go as is.
     
  22. ramosel

    ramosel Formula 3

    Sep 11, 2004
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    #3497 ramosel, Mar 12, 2010
    Yeah, thats probably the smart move. True heat treating would put too much heat into the Frankenstein monolith you have created. But I would suggest you clean them up really well and find someone with a commercial oven to bake them for a couple hours at low heat (at or just above expected operating temp) then use something like KWIK-CHEK dye on them. It would be a shame to have an undetected cold flow turn into a fissure the first time you light this candle.

    Do you know what the original alloy (and temper) is?

    Rick
     
  23. mk e

    mk e F1 World Champ

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    #3498 mk e, Mar 13, 2010
    That sounds right. The heads will be hot when I press the guides and seats and I can dye them after that.

    I have no idea what the original alloy it...ferrari says "a proprietary alloy"
     
  24. mk e

    mk e F1 World Champ

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    #3499 mk e, Mar 13, 2010
    I'm done roughing head 1.....it needs a little more weld here and there when the new torch gets here, but they just shipped it friday so that is still a week away. On to head 2.
     
  25. jratcliff

    jratcliff Formula 3

    Sep 7, 2004
    1,024
    Texas
    #3500 jratcliff, Mar 13, 2010
    On some of the Titanium parts my shop has welded, we do a freon sniff test to test the weld integrity. It is a low pressure (shop air) test but is one way of testing without elaborate fixtures.


    John
     
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