Close

Results 1 to 11 of 11

Thread: Alfa Oil Pan

    1. Kit: , by (VIP/Sponsor) Andym is offline
      Builder Last Online: Dec 2013 Show Printable Version Email this Page
      Model Scale: 1/8 Rating:  (1 votes - 5.00 average) Thanks: 0
      Started: 01-18-11 Build Revisions: Never  
      Not Supported

      I'm building a display engine to sit next to my Alfa Chassis. Where the engine in the chassis has a racing exhaust and coffee can start the display engine will have an under-body exhaust and a Magneto start.

      The recent three-day weekend provided me time to make an aluminum oil pan for the display engine. The "Law of Three" was strongly in force as I had to try three times before I got one that looked the way I wanted it to, but once cleaned and buffed up, it should look pretty good underneath the engine block.

      Andy.

      P.S. Go down to post #9 in this thread to see how the oil pan was made.

      Build Photos

      Alfa Oil Pan-12-jpg  Alfa Oil Pan-14-jpg  Alfa Oil Pan-15-jpg  Alfa Oil Pan-16-jpg 


      Show Complete First Post

      Show Your Support

      • This build may not be copied, reproduced or published elsewhere without author's permission.
        Please note: The first post will be displayed at the top of every page.
    JOIN THE SMC ALLIANCE NOW

  1. xken's Avatar VIP/Sponsor
    Name
    Kenneth
    Join Date
    Aug 2008
    Posts
    2,397
    Andy, I cannot get your pictures to enlarge; right now they are too small to appreciate.

    Ken
    QUOTE QUOTE #2

  2. hot ford coupe's Avatar VIP/Sponsor
    Name
    Jeffrey
    Join Date
    Sep 2005
    Posts
    7,827
    That's a big ditto, Good Buddy. I'd really love to see how you did it.
    Sometimes a handful of patience is worth more than a truck load of brains. Have the courage to trust your own beliefs. Don't be swayed by those with louder voices. W.S. Maugham :)
    QUOTE QUOTE #3

  3. Andym's Avatar VIP/Sponsor
    Name
    Andy
    Join Date
    Sep 2005
    Posts
    592
    Let's try that again... Sorry guys.


    Alfa Oil Pan
    When I was young I used to say "When I grow up I'm going to be somebody!"

    I now realize I should have been more specific.
    QUOTE QUOTE #4

  4. xken's Avatar VIP/Sponsor
    Name
    Kenneth
    Join Date
    Aug 2008
    Posts
    2,397
    Andy, now that is more like it. Do you have any pictures of the cutting process showing your set up and cuts? I assume you start with a block of T3 aluminum.

    Ken
    QUOTE QUOTE #5

  5. Andym's Avatar VIP/Sponsor
    Name
    Andy
    Join Date
    Sep 2005
    Posts
    592
    Ken - I started with 6061-T6 Aluminum bar. I have all the pictures of the build / machining processes and will post them tonight when I get home.


    Alfa Oil Pan
    When I was young I used to say "When I grow up I'm going to be somebody!"

    I now realize I should have been more specific.
    QUOTE QUOTE #6

  6. xken's Avatar VIP/Sponsor
    Name
    Kenneth
    Join Date
    Aug 2008
    Posts
    2,397
    Andy, AHHHH......you are using the pricey engineering grade stuff. Must be nice.

    Ken
    QUOTE QUOTE #7

  7. Andym's Avatar VIP/Sponsor
    Name
    Andy
    Join Date
    Sep 2005
    Posts
    592
    I like it because it responds well to wet sanding Alfa Oil Pan when I want a dulled look and, more importantly, polishes up almost like chrome when I'm going for the Pebble Beach look. I also think it's easier to work with on the mill and the lathe (but that's probably only because it's what I'm used to).


    Alfa Oil Pan
    When I was young I used to say "When I grow up I'm going to be somebody!"

    I now realize I should have been more specific.
    QUOTE QUOTE #8

  8. Andym's Avatar VIP/Sponsor
    Name
    Andy
    Join Date
    Sep 2005
    Posts
    592
    After experimenting with different techniques, I figured that making the oil pan in three pieces was the way to go. There were lots of little reasons, but the two big reasons for this decision were (1) it was easier to curve the ends of the pan if it was a separate piece and (2) drilling the holes in the bottom plate was much simpler.

    I started with a block of aluminum. After making sure it was a perfect rectangle of appropriate size, I cut the top sides at a 3 degree angle on the tilt table on my mill.

    In order to give the cooling fins the appropriate curve on the ends, after getting the basic shape of the pan, I rounded off the left and right edges (measured horizontally) using my belt sander and ever increasing grits of sand Alfa Oil Pan paper to get a nice smooth edge.

    Next - and the last step before cutting the fins - is do drill and counter sink the drain plug hole at the front end of the pan. Again - this should be done before the cooling fins are machined.

    Now that I had the pan shaped correctly, it was time to cut the cooling fins. A couple of words of caution here. First - it is highly recommended that you have a digital read-out on your mill for this step. Second - to get the proper number of fins, use a 1/16" flat tip end mill with each fin spaced 0.1250" apart. Third - GO SLOW. Forth - GO REALLY SLOW.

    Now that the pan is done, it's time for the bottom plate. After two failed attempts I realized that this was never going to work out if I didn't cut the holes BEFORE shaping the plate itself. Because the holes are so close to the edge, it just made a lot more sense to cut the holes first. This step required a bit of creative thinking in terms of how to hold a piece of flat aluminum plate (1/8" thick) on the cross slide of the mill. I ended up notching a block of wood, screwing the entire aluminum plate onto said chunk of wood using machine screws and then setting the hole positions using an end mill chucked up in the Mill. Again - a digital read-out is helpful if not mandatory to get the holes spaced and aligned correctly. Once the hole positions were set, I used a jeweler's press with 0.00001" run-out to drill the holes using a #55 bit.

    With the plate done, the final step was to cut the end piece. Given that the 1:1 Alfa Oil Pan prototype was cast, I had to figure out how to replicate the look with machining instead of casting Alfa Oil Pan . I think the picture speaks for itself and I'm pleased with the result.

    A little epoxy Alfa Oil Pan resin Alfa Oil Pan to join up all the pieces, some wet sanding Alfa Oil Pan and polishing, and voila - an all-aluminum, scratch-built, 1:8 scale Alfa Romeo 8C 2300 oil pan.

    Andy.


    Alfa Oil Pan
    Attached Images Attached Images Alfa Oil Pan-02a-jpg  Alfa Oil Pan-03a-jpg  Alfa Oil Pan-04a-jpg  Alfa Oil Pan-06a-jpg  Alfa Oil Pan-07a-jpg  Alfa Oil Pan-08a-jpg  Alfa Oil Pan-09a-jpg  Alfa Oil Pan-10a-jpg  Alfa Oil Pan-11a-jpg 
    Last edited by Andym; 01-18-11 at 06:52 PM.
    When I was young I used to say "When I grow up I'm going to be somebody!"

    I now realize I should have been more specific.
    QUOTE QUOTE #9

  9. hot ford coupe's Avatar VIP/Sponsor
    Name
    Jeffrey
    Join Date
    Sep 2005
    Posts
    7,827
    Way cooooool !! Thanks Andy for breaking that down. The process is crystal clear.
    Sometimes a handful of patience is worth more than a truck load of brains. Have the courage to trust your own beliefs. Don't be swayed by those with louder voices. W.S. Maugham :)
    QUOTE QUOTE #10

  10. Andym's Avatar VIP/Sponsor
    Name
    Andy
    Join Date
    Sep 2005
    Posts
    592
    HFC - the funny thing is that even though I wrote everything down and took explicit notes with pictures and measurements, I'm pretty certain I couldn't do it again.




    Alfa Oil Pan
    When I was young I used to say "When I grow up I'm going to be somebody!"

    I now realize I should have been more specific.
    QUOTE QUOTE #11

Tags for this Thread

Bookmarks

Posting Permissions

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

Quick Scale Calculator

 
Scale Calculator   Scale Factor   Real Size:     + Deluxe Scale Calculator
  1: th   Which equals Convert measurement: Reset or clear:  
  Any Scale   Scale Size:     + Deluxe Metric Calculator
 
Top