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    1. Kit: , by (VIP/Sponsor) hot ford coupe is offline
      Builder Last Online: Mar 2021 Show Printable Version Email this Page
      Model Scale: 1/8 Rating:  Thanks: 1
      Started: 07-19-07 Build Revisions: Never  
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      Since I’m still working on the interior of my deuce, there are a few things I’ll need to do with that first before I can finish the seats and the seat tutorial. While I’m doing that, I thought I’d stick in another tutorial that many of you might be interested in. For my Celebration Deuce, which I intended originally to build “box stock”, (you guys know me well enough now that I just can’t leave anything stock and have to fiddle with everything ), I was going to shoehorn in a 390 Caddy engine, but it was just too durn big. I’d wind up having to put the shifter in the trunk somewhere. Instead, I’m putting in a scratch built Scratch Building a 1/8 Scale Engine 1949 Olds 303 cu. in. Rocket engine with the older style rocker covers and a shortened version of a t-10 tranny. I’ll go ahead and document this build and make it a tutorial on general engine building. Remember, it’s the building principles I intend to point out, not the specific details of a specific engine. That way, you’ll be able to scratch build Scratch Building a 1/8 Scale Engine any engine you want.

      As with any complex scratch building project, you’ll need to start with a blue print so you’ll know where you’re going. Murphy’s Law dictates that whatever blueprint you’re looking for will be the least available either on the net or in a book. You’ll never find it, so you’ll have to make one yourself. I usually find my engine choice from one of the smaller 1/25 scale model kits. I get as many measurements as I can, convert the measurements to 1/8 scale and draw the parts on paper at 1/8 scale. I measure in millimeters so I can avoid all those fractions. I multiply my measurement by 25 and divide by 8 or just use the handy dandy SMC scale converter. From that, I make a styrene Scratch Building a 1/8 Scale Engine template and save it. That way, I can duplicate the engine without having to re-measure the more complex parts each time. Usually that’s the front and back of the engine block. Most everything else is square, rectangular or triangular which makes building easier.




      I then use the template to outline my part on a sheet of Plastruct or Evergreen 3mm thick styrene Scratch Building a 1/8 Scale Engine . The parts are cut out and rough trimmed.



      . To keep your engine from being built lopsided, the front and back pieces must be exactly the same size. I tape the two parts together and trim the pieces as if they’re one piece.





      You can see where the uneveness is.
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  1. hot ford coupe's Avatar VIP/Sponsor
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    Jeffrey
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    Don't stop!! There's more.

    When I’m satisfied with the parts and the measurements are correct, I separate them and mark the indentations for the offsetting of the heads on the parts as shown.



    The next step is to cut the rectangular pieces for the block sides. Don’t forget to cut the sides 6 mm less in length than the full side measurement. You need to take the thicknesses of the front and back pieces into account so your engine doesn’t wind up coming out longer than it should. Once your sides are correctly trimmed and even, glue them to the front and back. I use a T square to set the angles correctly again so the engine doesn’t come out lopsided. Let the glue set overnight to make sure your work is solid. I use a drill press and a wide cylindrical bur to machine in the offsets for the heads.




    . If you don’t have a drill press, you can use a Dremel Scratch Building a 1/8 Scale Engine or even carve them in by hand if you don’t have a Dremel Scratch Building a 1/8 Scale Engine . It’ll just take a bit longer.





    Cut about 1.5 mm thick. You'll then be able to smooth out all the roughness with either a chisel or hobby knife Scratch Building a 1/8 Scale Engine and sand Scratch Building a 1/8 Scale Engine smooth.






    Another way which may be easier is to make the front and back pieces out of 1.5 mm thick styrene Scratch Building a 1/8 Scale Engine and glue a second piece over that to get your offsets. Just remember to account for thicknesses of your styrene Scratch Building a 1/8 Scale Engine to keep the correct measurements. Next, I cut and glue in the lower side pieces for the block. Tonight I’ll be working on the cylinders, so I’ll take some more pics and show you how to set up each cylinder bank.


    Scratch Building a 1/8 Scale Engine
    Last edited by hot ford coupe; 07-19-07 at 02:02 PM.
    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 #2

  2. Don Garrett's Avatar Asst. Administrator
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    Don
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    Way to go Jeff....I had intended to do a tute on scratch building a 392 Hemi when the SBC is done....so would it be O.K. with you if I kinda play in your sand Scratch Building a 1/8 Scale Engine box at the same time? If you are going to provide the general basics I won't duplicate them.....I'll provide the measurements for the one I'm working on but with a twist....mine will be built keeping casting Scratch Building a 1/8 Scale Engine in mind, you know...the undercutting issues, thickness, and above all, you gotta' be able to get the parts out of the mold, right? This will allow us to provide a lot of info in the same thread without bumping each other. What's your thinking?
    Grandpa McGurk.....Steppin' Large and Livin' easy.
    TDRinnovations.com
    QUOTE QUOTE #3

  3. Don Garrett's Avatar Asst. Administrator
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    Jeff, you know I like to bug ya about taking the long way home...
    If you sandwich 2 pieces each together for the front and back of the block you could just cut the head offset out of the front piece (glue them together) and not have to mill or carve the offset.
    Grandpa McGurk.....Steppin' Large and Livin' easy.
    TDRinnovations.com
    QUOTE QUOTE #4

  4. hot ford coupe's Avatar VIP/Sponsor
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    Jeffrey
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    First point- Don, I don't mind at all if you join me in the sandbox. The more the merrier. In fact if you're doing the 392, you can always show some alternatives to the way I do mine. That gives the builder more options. So go an ahead and jump in where you see fit.

    Second point. I did mention about that method somewhere in the tutorial but I did it so quickly it probably got buried. Sandwiching two pieces together is the perfect way to get all the offsets you need and makes a difficult procedure much easier. What we have here is two different ways of thinking which is what I really like. You got me realizing that my school of thought comes from my dental training. Whatever we did, we usually cut our detail [B][U]into[/U][/B] a surface rather than building up a part. I think we can do this tutorial together with me building the Olds and you doing the Hemi. That way, it'll go along with point one and we'll have two diferent philosophies in one tutorial. The builder can pick and choose from the methods and at the same time see how one engine builds as opposed to another. I'll see you in the sandbox. Just remember to watch out for the cat.


    Scratch Building a 1/8 Scale Engine
    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 #5

  5. hot ford coupe's Avatar VIP/Sponsor
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    Jeffrey
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    I almost forgot, I tested out the SMC calculater at the bottom of the forum page and it works fantastic. all you need to do is put in a measurement and boom, it comes out right on the money. Just follow the directions and have a blast.


    Scratch Building a 1/8 Scale Engine
    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 #6

  6. hot ford coupe's Avatar VIP/Sponsor
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    As I mentioned, tonight I started to set up the left cylinder bank. If you are not planning on making your heads removable to be able to see some of the inner works, then this step will be very easy. Youíll use only what you need and youíll go from there. In my case, Iím going to detail the heck out of this engine by making the heads removable, by putting in the cylinders, the pistons, the crank and cam shafts, rockers and whatever else I can find in my research pictures

    First off, Iíll cut out my cylinder bank top from a piece of .080Ē styrene Scratch Building a 1/8 Scale Engine sheet. Itís about half the thickness of what Iíve used so far. After I get it to fit into the correct space on the block, I start to measure the piece for the cylinder holes. From the original bore measurements of the 303 block, the 1/8 scale measurement is 11.9 mm or just short of half an inch. Using my EBE measuring device, (EBE= Eye Ball Engineering), I estimate the position of the holes according to my research picture. I then more accurately measure out the piece so I can get the holes evenly spaced. Here is the measured piece.



    All I do from here is cut out the holes and smooth them out by whatever method you choose. I used a drill press for my rough holes and refined and finished them with a Dremel Scratch Building a 1/8 Scale Engine , a large rat tail file and some sandpaper wrapped around a dowel.





    For the actual cylinders, Iím going to use half inch outer diameter styrene Scratch Building a 1/8 Scale Engine tubing that has an inner diameter very close to the 1/8 scale cylinder measurement I need. Iíll be cutting the individual pieces later this weekend and will show how I assemble the cylinder bank. Stay tuned, more to come.


    Scratch Building a 1/8 Scale Engine
    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 #7

  7. Don Garrett's Avatar Asst. Administrator
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    Way cool, I'm in on that.
    Jeff you might want to cut the size down just a tad on the pics...some of the dial-up guys are having to wait a while for them to load.
    Grandpa McGurk.....Steppin' Large and Livin' easy.
    TDRinnovations.com
    QUOTE QUOTE #8

  8. hot ford coupe's Avatar VIP/Sponsor
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    Jeffrey
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    Gotcha. I'll knock them down so you still can see the detail but get the pic alot faster.


    Scratch Building a 1/8 Scale Engine
    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 #9

  9. hot ford coupe's Avatar VIP/Sponsor
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    O.k. guys, how's zis ? Hopefully they'll load a lot faster for you .


    Scratch Building a 1/8 Scale Engine
    Last edited by hot ford coupe; 07-20-07 at 10:52 PM.
    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. Rick's Avatar Member
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    This is great stuff Jeff. You put a lot of time into your tutorials and we really appreciate it. Thanks for all you do!
    QUOTE QUOTE #11

  11. hot ford coupe's Avatar VIP/Sponsor
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    Not a problem, Rick. I want everyone to be able to use these techniques no matter what level the builder is. Wait until I get to the next few steps. There'll be something for everyone.


    Scratch Building a 1/8 Scale Engine
    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 #12

  12. Don Garrett's Avatar Asst. Administrator
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    Rick, get your butt down to the LHS Scratch Building a 1/8 Scale Engine and get yourself some .020, .040 and .060 sheet styrene Scratch Building a 1/8 Scale Engine . I'll start posting the dimensions and info for the 392 tomorrow....build a Hemi or two along with us. I don't want Jeff to get too far ahead of me so we'll start with the basic block, not as heavy on internal detail as Jeff is doing but lots of show and tell external detail.

    Jeff and I have different building techniques so you guys will be able to pick and choose what works best for you, that's what I call a win, win situation.
    We do however agree 100% on one point........if ya need it, BUILD IT!
    Grandpa McGurk.....Steppin' Large and Livin' easy.
    TDRinnovations.com
    QUOTE QUOTE #13

  13. Mario Lucchini's Avatar Super Moderator
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    Great tutorial HFC!!!
    You gave me an idea...Why don't you mail me your dimensions or design, I'll draw them in Autocad, send them to you as PDFs in perfect scale...
    Then you print'em, stick'em, cut'em...........Piece o cake!!!

    With regards from The Shadow

    P.S. I'm in the middle of turning aluminum brake drums entangled with swarf to my neck!!!
    Think I deserve a Gourmet crayon with extra bluecheese sauce!
    QUOTE QUOTE #14

  14. hot ford coupe's Avatar VIP/Sponsor
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    Will do Don. I can show some of the internals and you can show how you do the externals. I think that's a great idea that you're doing the Hemi along side the Rocket.

    Thanks Mario. I'll go ahead and give you the design as soon as I can and we'll go from there. I did my last engine like that with sticky paper but the wife went and relocated my label paper and now I can't find it. I started using the templates so I could lay them down on the styrene Scratch Building a 1/8 Scale Engine , trace and cut. I like the sticky method better since you can stick all your shapes on a styrene Scratch Building a 1/8 Scale Engine sheet and cut all the parts out at one time. BTW, how do you get that great crinkly cast surface on your painted engine parts. Are you using the Krylon suede textured paint first?


    Scratch Building a 1/8 Scale Engine
    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 #15

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