The Smithsonian Motor Works Model Engine
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The Smithsonian Motor Works Model Engine

Overall Rating Rating 3.9  |  24 reviews  |  Write a review
Today $32.67
Save $29.58 (48%)
Item #: 12323734
    Add something special to your collection of model figurines with this unique Smithsonian Motor Works model engine. Rather than just being a model, this is a real working engine that you build yourself. The set includes everything you need....more
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    This Smithsonian activity set lets you build a real working battery powered, four-cylinder model engine. The learning accessory features real lights and sounds as it lets you see how the pistons fire with the correct timing.

    • Watch the belts and fan turn
    • Includes, over 100 parts that screw together easily, and detailed instructions
    • Requires two (2) AA batteries (not included)
    • Recommended for ages 8 years and up
    • Includes 35-inch long x 23-inch wide poster
    • Build a working model of a 4-cylinder engine
    • Valves rock, spark plugs fire and pistons drive crankshaft
    • Battery operated moving parts and lights

    Set includes
    • 2 washers
    • 2 shafts in various lengths
    • 4 exhaust valves
    • 4 intake valves
    • 8 valve stems
    • 4 piston halves
    • 4 connecting rods
    • 8 timing cams
    • 8 rocker arms
    • Crankshaft
    • Crankshaft pullery
    • Fan pullery and fan
    • Engine mounting stand
    • 5 bearings and clutch housing
    • Oil-pan
    • Lower crankcase
    • Rocker arm cover
    • Upper cylinder head
    • Timing belt
    • Timing wheel
    • Timing gear
    • Belt tensioning pullery
    • Lower cylinder head
    • Cylinder block
    • Dipstick
    • Positioning jig
    • Timing belt cover
    • Intake manifold
    • Exhaust manifold
    • Carburetor cover
    • Carburetor bowl
    • Front half of water pump
    • Rear half of water pump
    • Flywheel clutch
    • Fan belt
    • Head basket
    • 8 valve springs
    • Distributor assembly
    • Drive module
    • Battery pack
    • 67 screws
Model No:
Brand: NSI


  • Theme
    Children, Masculine, School, Scouts, Vehicles
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Showing 5 most helpful reviews on this product.

  • 5 Stars 11
  • 4 Stars 7
  • 3 Stars 1
  • 2 Stars 3
  • 1 Stars 2
  • Model Engine

    The engine is fun to assemble when you have all the parts needed. My recommendation is verify that all parts are included before starting the project. Maybe not such a good idea to get this toy from Overstock? Then send one email to NSI. So, far NSI International has sent us the first part and we have requested the second at the time of writing this review. My ten year old is able to assemble the engine with just a little help. There are a couple of mistakes in the instructions. On step 18, follow the sequence A,B,C,D,E,F,G and H for the camshaft but don't try to match the orientation of the parts to the drawing. Instead, A & B, C & D, E & F and G & H will point in opposite directions. Also, on step #19, ignore the drawing showing that the camshaft parts have changed sequence in that step. This was confusing to my son.

  • not happy with this item. screw hole don't align

    not at all happy with this product. the crew alignment was off and the whole toy had gaps and didn't fit nicely together. never got it to work properly... most likely because of the alignment

    • Please tell us about the quality of the product. poor quality in screw hole alignment, very difficult to build due to this
  • fun plastic model tombuild

    detailed,realistic. Can see operating parts inside a 4 cylinder overhead cam engine.

    • How accurate was the sizing? DNA
    • Please tell us about the quality of the product. good
    • Was the product free of any manufacturer defects? yes

    0p3n from kenmore, washington, May 18, 2013

    Flag As Inappropriate
  • Super cool for preteens

    I ordered this for my 11 year old grandson. He was so excited perfect gift!

  • parts missing, poor quality brittle plastic-cheap

    Camshaft pieces were missing. I had all 8, but instead of all being different I had a mismatch of 4 of the same, 2 of the same ect. Many pieces already had cracks out of the box and while installing screws usually cracked and not from over tightening, like half way in they would crack. Pieces were badly molded and featured a lot of parts needing deburring before they could be assembled, Instruction illustrations were very poor and incomplete leading to confusion on many steps and having to look at all the other steps to see proper orientation. Several times these were even inconsistent. My daughter got frustrated with this and rightfully so. I'm a mechanic and I think it's garbage. Buy the visable V8 for another $10 it is a lot better made. Still waiting to hear about the missing cam pieces, probably be thrown away....beware.

    • Please tell us about the quality of the product. brittle plastic is cracked out of the box, half the screws cracked while installing at maybe 1/2 way in. Some parts had bad flashing left
    • Was the product free of any manufacturer defects? Missing parts

    tomken98 from Redmond, Washington, Dec 31, 2011

    Flag As Inappropriate
View All Most Helpful Reviews
  • my husband loved this for christmas

    great gift for all ages or yourself


    ecrowder Mar 23, 2015

  • Great Choice!!!

    This toy is the bees knees, legs, and his arms! I would get them for my whole class as an activity if I were a Physical Science teacher!


    kenkenifffromconnecticut from LA, CA, Jun 18, 2014

  • Very fun

    This toy was extremely fun to assemble with my son I think it taught him a few valuable lessons. It works great and it also looks really cool sitting on the dresser in his room.


    toyman87 from Columbus, OH, Jun 18, 2014

  • motor works engine

    easy to order and shipped quickly price was fair and something my grandson had been asking for

    • How accurate was the sizing? toy
    • Please tell us about the quality of the product. Christmas gift
    • Was the product free of any manufacturer defects? Christmas gift

    harbor135 from Detroit, MI, Dec 12, 2012

  • Son and husband loved it

    I purchased this as a gift for my son. Dad and son worked on it together and had a really good time. Dad got to explain the car engine without all the grease!!


    mmmm1313 from Los Angeles, CA, Jan 29, 2012

View All Most Recent Reviews

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