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ITEM#: 12323734This 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
- 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
- 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 pullery
- Fan pullery and fan
- Engine mounting stand
- 5 bearings and clutch housing
- Lower crankcase
- Rocker arm cover
- Upper cylinder head
- Timing belt
- Timing wheel
- Timing gear
- Belt tensioning pullery
- Lower cylinder head
- Cylinder block
- 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
|Type||Activity Sets, STEM|
|Country of Origin||China|
Quality RatingLearn More
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This is very good for children to learn how an engine worksRead More
My nephew liked this one for Christmas.Read More
The 'belt' that turned the pistons didn't fit right. So the pistons would move, but the fan didn't. Not worth the money or the time it took to figure out the item doesn't work correctly.Read More
It was a great idea, but very difficult for a 7 year old to build. My son loves engines. We built it together. The timing belt was warped, so it never worked.Read More
Got this for my son for Christmas. It's a very cool idea, but cheaply made. There were missing pieces and some of the pieces broke easily. Not worth what I paid for it.Read More
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.Read More
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 alignmentRead More
detailed,realistic. Can see operating parts inside a 4 cylinder overhead cam engine.Read More
I ordered this for my 11 year old grandson. He was so excited perfect gift!Read More
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.Read More
Questions & Answers
It will be perfect for my 13 year old grandson.
Daughter is interested in science and mechanical items.
My six year old boy loves building things
for my son
My grandson is very inquisitive and analytical. Although the internal combustion engine may be obsolete within his lifetime, I feel that every young man should know the principles and physics of how it works.
For a family member
price and educational
I have a grandson who is very curious.
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** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.