K'nex V8 Engine

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Introduction: K'nex V8 Engine

this engine was my smallest engine yet, I also have a intructions video on youtube for this engine. GOOD LUCK BUILDING!!

Step 1: Crank Shaft

the first thing!!

Step 2: Pistons

compact pistons, yet easy

Step 3: Crank Case

do not fill with oil!!

Step 4: Cylenders

for the pistens.

Step 5: Cam Shaftand Pushrods

the red conectors for the push rods should line up and stand up acuatly for the next step.

Step 6: Finishing

Step hardest step, and last step!!

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    108 Discussions

    0
    Duncan Codd
    Duncan Codd

    7 years ago on Introduction

    I added two battery powered k'nex motors to a gear and it works great.

    picture041.jpg
    0
    Boasz
    Boasz

    9 years ago on Introduction

    i've buidl your engine its in mine knex car now

    HPIM0969.JPG
    0
    vonster
    vonster

    9 years ago on Step 3

    how does the crank shaft connect into one piece so that when you turn the crank it moves as one? - thanks

    0
    zbrown2016
    zbrown2016

    9 years ago on Step 2

    How do o connect the y connecter on the second step

    0
    needles300
    needles300

    Reply 9 years ago on Step 2

    its atached to the short white rod in the mittle of the piston

    0
    171292
    171292

    9 years ago on Step 6

    If you wanted to, how would you add valves and rocker arms to this?

    0
    needles300
    needles300

    Reply 9 years ago on Step 6

    i forgot how. it shouldent be that hard to make

    0
    171292
    171292

    Reply 9 years ago on Step 6

    I've tried... and failed. I just don't know how! >:-0 I need to make this for next week for a school science fair, and I NEED HELP!!!! is there any models or anything that you used to help you in the makings of your engine or anything? Or, if you remember, could you contact me at williamcondie@hotmail.ca please? Thanks!

    0
    needles300
    needles300

    Reply 9 years ago on Step 6

    i made this 3 years ago but if you wach my video--- http://www.youtube.com/watch?v=U0Q9RbXeMHc
    you can stop the video when you see the valves, i used elastic bands for it but it wound work better with small springs. its all a got to help you so i hope it works out for you.

    0
    171292
    171292

    Reply 9 years ago on Step 6

    Thanks! The rocker arms are on and the engine works fine! :-D

    0
    lilbigmanb
    lilbigmanb

    10 years ago on Step 6

    TO MAKE IT RUN USE A CORDLESS DRILL TO ONE END OF THE CRANK SHAFT ITS REALLY COOL

    0
    needles300
    needles300

    Reply 10 years ago on Step 6

    thats what i did. it runs really well

    0
    superbestknex
    superbestknex

    Reply 10 years ago on Introduction

    instead of using black hinges can we use one gray connector and allternate through the crank shaft so its a v4 ND NOT A V8

    0
    needles300
    needles300

    Reply 10 years ago on Introduction

    you could cut it to make one. it won't be a V engine, you would make it a inline engine.

    0
    kingofknex
    kingofknex

    Reply 10 years ago on Step 6

    mine wont run it just jams, should i build again??

    0
    needles300
    needles300

    Reply 10 years ago on Step 6

    check the place were it is jamed and fix it