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308 V12 conversion begins

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

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  1. mk e

    mk e F1 World Champ

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    #1926 mk e, Jan 12, 2009
    Last edited by a moderator: Sep 7, 2017
    I think all I made last week were mistakes. I realized last night that the distance from the crank to the trans shaft was .010" under the stock dimension.....no good, the gears will never fit like that. So tonight I re-bored the pin holes in the trans in the correct spot and made a set of step pins (one end for the now oversize trans holes and the other end to fit the engine) to set the distance to the correct number. Tomorrow night I'll weld in the holes on the back of the bellhousing that I just welded and cut yesterday and do it again to the new numbers.....and be back to where I thought I was yesterday.

    I really need to learn to be more careful, I guess that will be my self improvement goal for the year........of course if I was more careful last year I would have known better than to start this project to begin with :p
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  2. RVIDRCI

    RVIDRCI Formula 3

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    #1927 RVIDRCI, Jan 13, 2009
    Last edited: Jan 13, 2009
    Definition:
    Tenacious {ten-A-sheeee-oooos!}(Adj) 1.) Unyeilding regardless of obstacles. 2.) obsessed with correct fabrication to the point of self abuse. 3.) Mark Eberhardt
     
  3. mk e

    mk e F1 World Champ

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    #1928 mk e, Jan 13, 2009
    Last edited by a moderator: Sep 7, 2017
  4. Hans

    Hans F1 Veteran

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    #1929 Hans, Jan 14, 2009
    Do you also have that thing where your projects either wants to be going well or wants to self-destruct? That's at least how my projects go. Either I am on a roll and everything I do goes right and is easy to do, or everything I do comes out crooked. Nothing much in between. On the latter days it's best to simply close the door to the shop and do something constructive, like play with the dog (or the girlfriend ;)).
     
  5. flxzcat

    flxzcat Karting

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    #1930 flxzcat, Jan 14, 2009
    Mark,

    FYI you cant really hurt aluminum by dunking it in cold water immediately after welding on it. In fact it's a good idea to do so as it will leave it slightly heat treated. Unlike steel, it wont get brittle and crack. When welding on 6061 (or any aluminum) the weld area ends up more like 3xxx series (pretty soft). By dunking the smoking hot part in a bucket of water, you can increase the hardness to resemble a 4xxx/5xxx type. BTW, I learned this from Smokey Yunick.

    Cheers,
    Paul
     
  6. mk e

    mk e F1 World Champ

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    #1931 mk e, Jan 14, 2009
    yup........
     
  7. mk e

    mk e F1 World Champ

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    #1932 mk e, Jan 14, 2009
    That sounds about right to me. It has to be up at 800F or so when you quench it to do any heat treating I think (I'd have to look up the exact number) and you are more likely to get distortion of the part. I do often cool the parts when I actually want to move on to the next step, last night I just wanted to go to bed at a reasonable hour for a change :)
     
  8. mk e

    mk e F1 World Champ

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    #1933 mk e, Jan 14, 2009
    Last edited: Jan 14, 2009
    I'm just heading down to the shop now, but in the mean time you guys might want to take a look at this thread:

    http://www.ferrarichat.com/forum/showthread.php?p=138340628#post138340628

    Wil (of very nicely supercharged 2v 308 fame as well as very helpful with my project, he just sent me a couple TBs to mess with) has decided to build a car.....from scratch (mostly) it's looking pretty darn good.
     
  9. mk e

    mk e F1 World Champ

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    #1934 mk e, Jan 14, 2009
    Last edited by a moderator: Sep 7, 2017
    The trans bearing bore is done….again. Anyone else getting déjà vu here???

    It is a pain in the butt to get this housing indicated straight……I thought I’d only have to do it once. I think I’m going to mill the bottom edge straight so I’ll have something easy to indicate on….just in case, and it will make the holes on the back go much faster tomorrow.
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  10. mk e

    mk e F1 World Champ

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    #1935 mk e, Jan 16, 2009
    Yes. He was ahead of schedule on his drive out to york so he popped in last night for a visit. We "known" eachother for 6 or 8 years now so it was good to finally meet him.
     
  11. Pizzaman Chris

    Pizzaman Chris F1 Rookie

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    #1936 Pizzaman Chris, Jan 16, 2009
    That's great to hear.

    I hope he took some pictures. I want to see what goes on in that "shop" of your. ;)
     
  12. rezmoto

    rezmoto Rookie
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    #1937 rezmoto, Jan 16, 2009
    OMG!, i cant beleive i just went throw alllll the pages..... and all i can say is...... THANK U!!!!!!!!
     
  13. mk e

    mk e F1 World Champ

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    #1938 mk e, Jan 17, 2009
    He did. As soon as I said shop, he ran out to the car for his camera so he'd have proof :)
     
  14. mk e

    mk e F1 World Champ

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    #1939 mk e, Jan 17, 2009
    That must have taken hours!

    I was talking to another guy about maybe reorganizing everything in this thread in like a DB similar to fchat so you could look in order or by topic to make it possible to find stuff.......in my spare time I guess.
     
  15. rezmoto

    rezmoto Rookie
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    #1940 rezmoto, Jan 17, 2009
    Well ill be honest with you..... WELL WORTH IT!! TIME WELL SPENT.. I EVEN GOT MY CO-WORKER TO STOP WHAT HE WAS DOING TO READ THIS THREAD!!!
     
  16. mk e

    mk e F1 World Champ

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    #1941 mk e, Jan 17, 2009
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  17. Etcetera

    Etcetera Two Time F1 World Champ
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    #1942 Etcetera, Jan 17, 2009
    Say, that's starting to look like an engine and transmission.
     
  18. Tiger_Carrera

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    #1943 Tiger_Carrera, Jan 18, 2009
    Mark - Were you going to finish the rough welds on the bellhousing flange and filler pieces? I was just wondering if in doing so that it might alter the residual stresses in the piece and cause its shape to change enough to affect the gear alignment.

    Gary
     
  19. mk e

    mk e F1 World Champ

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    #1944 mk e, Jan 18, 2009
    I was thinking the same thing.
     
  20. gcmerak

    gcmerak Formula 3

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    #1945 gcmerak, Jan 18, 2009
    +2
    Ciao,
    George
     
  21. mk e

    mk e F1 World Champ

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    #1946 mk e, Jan 18, 2009
    Yes I am going to finish everything.....and yes there is a chance that something may move a little. It's one of those catch 22 things. I can't finish anything until I locate the major stuff, but once I locate everything the finishing work could move them. Normally if the rough cuts are taking less than .100" on something this size there is no problem so I think it will be fine. I guess the other option would have been to cut the locating holes undersize a litte, finish the rest of the housing then come back and finish cut the important stuff.
     
  22. mk e

    mk e F1 World Champ

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    #1947 mk e, Jan 18, 2009
    Last edited by a moderator: Sep 7, 2017
    Today's poject is to clean up the bell housing a bit more. I decided an real diameter would look better than the rough scriberd to the engine diameter I did yesterday and I needed to set up the rotary table anyway to cut the flange so.....it now has a diameter. I'm not exactly sure what I'm doing with the bottom 1/2 yet, but for now I guess that will get the same diameter as the top. Tonight after little one goes to bed I should have time to cut the outside of the flange and maybe start grinding/sanding, and this housing will start to look like a proper housing.

    You might notice it really doesn't fit very well on the rotary table being the part is about 14" acorss and it's an 8 inch rotary table. Also becasue of the shape of the part I had to quite a bit spacer under the part.....but it seems to be working.
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  23. jimshadow

    jimshadow F1 Veteran
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    #1948 jimshadow, Jan 18, 2009
    Very pretty!
     
  24. mk e

    mk e F1 World Champ

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    #1949 mk e, Jan 18, 2009
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  25. wildegroot

    wildegroot Formula 3
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    Nov 19, 2003
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    #1950 wildegroot, Jan 18, 2009
    It's looking good Mark! You must be taking some really light cuts with that set-up though. :)
     
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