308 Engine Rebuild & CIS to TWM Throttle Bodies Conversion Thread! | Page 18 | FerrariChat

308 Engine Rebuild & CIS to TWM Throttle Bodies Conversion Thread!

Discussion in '308/328' started by Pizzaman Chris, Sep 13, 2007.

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Page 18 of 83
  1. luckydynes

    luckydynes F1 Rookie

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    excellent . . thanks . . can you zoom in the intake valve seat with a valve that's open? . . I want to see how the guy ground the seat right there?

    thanks,

    Sean
     
    luckydynes, Sep 16, 2008
    #426
  2. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    Last edited by a moderator: Sep 7, 2017
    Pizzaman Chris, Sep 16, 2008
    #427
  3. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    Last edited by a moderator: Sep 7, 2017
    Pizzaman Chris, Sep 16, 2008
    #428
  4. luckydynes

    luckydynes F1 Rookie

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    can almost tell in the 2nd pic . . I wanted to see how close the top of the valve seat was to the head gasket surface or if he did anything special there . . .just looks like it's real close as in no way you could fit bigger valves . .. . can you take a high res close up maybe?

    cheers

    edit: now that I look at it that valve seat looks pretty wide . . take a high res close up . . . shrinking might blurr it though eh? . . .the top of the valve seat should be below the top of the valve face . . . probably is . . just seemed like I had to cut a lot of top angle to get the seat where it needed to be.
     
    Last edited: Sep 17, 2008
    luckydynes, Sep 17, 2008
    #429
  5. mk e

    mk e F1 World Champ

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    Help me get this thing finished! https://gofund.me/39def36c
    Sean, a 42mm valve is big enough to flow about 130cfm or roughly 50+ hp worth of air.....that's over 400 hp as is once the port is fixed.....just about the limit of you TBs.
     
    mk e, Sep 17, 2008
    #430
  6. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    Here are some shots of the heads when i first saw them.


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    Last edited by a moderator: Sep 7, 2017
    Pizzaman Chris, Sep 17, 2008
    #431
  7. luckydynes

    luckydynes F1 Rookie

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    man a 308 with 400 naturally aspirated horsepower would be nuts . .. I can tell I'm gonna need a flow bench or I'm gonna go bug the heck out of sleeve Steve. . . now that I'm officialy rid of the injected intake he hated I think he'll be more motivated about me trying to blow up one of his overbore creations :).
     
    luckydynes, Sep 20, 2008
    #432
  8. luckydynes

    luckydynes F1 Rookie

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    is that before or after he ground the seats? .. .. doesn't look like the top angle has been touched but maybe it didn't need it but I was taught to always kiss it .. . what's important is the top angle of the seat is below the top edge of the valve . .. look how much meat is between the top of the valve seat and edge of the combustion chamber in this pic when the seat is in the right place . . . I had to grind a custom rock to grind the top angle . .. . that's why I like seeing what others do . .. or don't do ;)

    too bad the top of the pic clipped it but it seems like if you machine the sealing surface of the 2v heads I've seen you are into the o.d. of the intake valve seat immediately.

    cheers
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    Last edited by a moderator: Sep 7, 2017
    luckydynes, Sep 20, 2008
    #433
  9. mk e

    mk e F1 World Champ

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    Help me get this thing finished! https://gofund.me/39def36c
    Build a 3.6 with 360 parts, a 348 heads gasket and properly flowed heads and you'll make 400 naturally aspirated hp at 8500. If you leave it a 3 liter you'll need more revs I think...although the QV sim said 340-350 at 7700 so thats 375-386 at 8500.

    I've got less than $500 into my flow bench........
     
    mk e, Sep 20, 2008
    #434
  10. luckydynes

    luckydynes F1 Rookie

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    any threads on building a flow bench on here yet? . . I'll start one in tech if not . .. maybe Artvonne started one? . . let me know.

    cheers.
     
    luckydynes, Sep 20, 2008
    #435
  11. mk e

    mk e F1 World Champ

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    Help me get this thing finished! https://gofund.me/39def36c
    I'm pretty sure Paul had one and mine is somewhere in the first 10 pages of the V12 build I think.
     
    mk e, Sep 20, 2008
    #436
  12. WJHMH

    WJHMH Two Time F1 World Champ Silver Subscribed

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    Any updates? So far it's lookin' good.
     
    WJHMH, Oct 3, 2008
    #437
  13. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    Thanks.

    Well, right now I'm waiting for a "main component" and when that comes in I can concentrate on the engine.

    Here are a couple of pictures. I have a friend that is making me some distributer covers and he wanted to see those 2 alignment tabs. He was thinking of making them a little hollow for the cam ends. But I think I might be able to get away with them being flat/solid. I don't know.
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    Last edited by a moderator: Sep 7, 2017
    Pizzaman Chris, Oct 4, 2008
    #438
  14. regisgtb4

    regisgtb4 Formula Junior BANNED

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    No reserve,110 296 215 112, Mason Family sellers
     
    regisgtb4, Oct 5, 2008
    #439
  15. snj5

    snj5 F1 World Champ

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    with 3 spare carbs to boot, currently at $305; Carbs will need rebuilding but that's not news.

    Now if I only had one of those $12K Mondial 8 coupes...
     
    snj5, Oct 5, 2008
    #440
  16. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    Last edited by a moderator: Sep 7, 2017
    Pizzaman Chris, Oct 29, 2008
    #441
  17. snj5

    snj5 F1 World Champ

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    Very nice work indeed! He has a CNC?
    You're going to Electromotive ignition?
     
    snj5, Oct 29, 2008
    #442
  18. Birdman

    Birdman F1 Veteran

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    SWEEEEEET!

    What are you doing Chris? I heard a rumor that you sold the carbs you bought. Are you going EFI now?
     
    Birdman, Oct 29, 2008
    #443
  19. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    He works for the Military or something. They are always shipping him out to California (San Nick) and New Mexico (Area 51??). Seems like every time I talk to him he has to go for some kind of physical when they ship him out for those "Top Secret" weekend get aways.
     
    Last edited: Oct 29, 2008
    Pizzaman Chris, Oct 29, 2008
    #444
  20. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    I can't comment on anything yet. :)



    Nothing is confirmed. ;)
     
    Pizzaman Chris, Oct 29, 2008
    #445
  21. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    Last edited by a moderator: Sep 7, 2017
    Pizzaman Chris, Oct 29, 2008
    #446
  22. snj5

    snj5 F1 World Champ

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    Very nice!
    Now I see why you didn't answer on the Electromotive ignition question as you are going to a central ECU for fuel and spark. :) :)
     
    snj5, Oct 29, 2008
    #447
  23. jimshadow

    jimshadow F1 Veteran Lifetime Rossa Owner

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    WOW! I could've used those a couple months ago. ;)

    JIM
     
    jimshadow, Oct 29, 2008
    #448
  24. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    I didn't want to say anything yet, it's way to early. :eek:
     
    Pizzaman Chris, Oct 29, 2008
    #449
  25. bert308

    bert308 Formula 3

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    Last edited by a moderator: Sep 7, 2017
    bert308, Oct 29, 2008
    #450
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