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I have a pretty nasty cold and my voice is gone so no narration in this video, sorry. But I still think we can make some educational and entertaining content without the use of my accent infused voice.

We'll start of with the review of this teching dm13-1 all metal engine model kit. I have to say that I'm extremely impressed with the visual impact of this thing. It really looks and feels a lot like a real engine in miniature form. All the individual pieces are really well made and there's zero cheapness. Even the box and the instructions are almost free of "engrish" and are very usable. The engine is very heavy and the engine block and cylinder head feel extremely solid and have a very impressive weight to them. This thing is a definitive conversation starter. I think it would absolutely shine on the desk of an executive of a business that works with cars and/or engines. It really looks the part. Even more so when you run it and you can observe all the moving parts. As an educational tool it's absolutely incredible. There's no need for vague or abstract explanations and weird hand gestures, this thing is the ultimate teaching aid.
Now for the things I didn't like. The allen keys are too short and hard to use and reduce the satisfaction a bit. A few additional tools would be nice in the kit. I think the fact that you can't install spark plugs like on a real engine is a bit unrealistic. The head bolts are also unrealistic and should be longer.


QUIZ ANSWERS
Q1 – fully counterweighted flat plane inline four crank – 2 points















Q2 – I beam – 2 points

















Q3 – dished pistons lower the compression ratio - 2 points
















Q4 – piston pins that are held in by circlips are fully floating, as opposed to pressed in piston pins that don't need circlips and are held in by the press fit – 3 points
















Q5 – They are missing piston rings – 1 point













Q6 – The main saddles (main bearings go here) on a real engine almost never have a reduced surface area. A reduced surface area reduces friction and you can often see this on the camshaft bearing area, but because the main bearings must bear much greater loads so they never have a reduced surface area. On top of this the main saddles almost always have oil delivery holes in them too – 3 points










Q7 – There's no thrust washers – 3 points












Q8 – through the top – 1 point











Q9 – the valve retainer, bucket and shim are all contained in one part. This means that adjusting valve lash would be very impractical. Increased wear and noise would also likely be present – 3 points












Q10 – A – 1 point

















Q11 – DOHC – Dual Over Head Cam – 1 point















Q12 – No variable valve lift no variable valve timing (cam phasing) – 3 points














Q13 – A Head Gasket – 2 points















Q14 – They're way to small and short – 2 points
















Q15 – oil pump – 2 points














Q16 – Rear main seal (housing) – 2 points

















Q17 – Flywheel – 1 point

















Q18 – Starter, or in the case of this engine the electric motor – 2 points












Q19 – Alternator or generator - 1 point













Q20 – Water pump – 2 points














Q21 – It's the belt tensioner pulley, therefore it provides tension to the belt – 2 points
















Q22 – It provides tension to the chain – 2 points
















Q23 – Single roller – 2 points

















Q24 – Four cylinder car engines almost never have 8 exhaust headers. The two ports from each exhaust valve merge into a single port to which a header is connected – 3 points


















Q25 – They're the same in both shape, size and length. In reality the different fluid dynamics of the intake and the exhaust ports dictate a different shape and size – 3 points














Q26 – the timing of the exhaust valves is off, they should open as the piston moves up, to let exhaust gasses be pushed out by the piston – 3 points

SCORE CHART:
5 points or less - Tesla Fanboy - You think ICE is frozen water don't you?
6 - 15 pts - Greta - Know thy enemy!
16 - 20 pts - Dad - Good job dad!
21 - 25 pts - Autozone employee - Year make and model please..
26 - 30 pts - Ricer - No, fast and furious isn't a great source for learning about cars
31 - 35 pts - Connoisseur - No, your girlfriend isn't impressed with your gulf racing livery socks
36 - 45 pts - Real Petrolhead - One of us! One of us! One of us!
46 - 47 pts - Engine Jedi - The force is strong in you. Bless you.
48 pts - Petrolheads Anonymous - You have a problem, but I love you.

A special thank you to my patrons:
Daniel
Peter Della Flora
Daniel Morgan
William
Richard Caldwell
Pepe
Brian Durning
Andrew Ruud
Brian Alvarez
Holset90

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