these are some of the coolest
little engines I've ever seen originally I was just gonna jump right into a crazy episode with
this thing but I was so impressed with how this thing looked and sounded in that previous video
i decided to modify it first by building a twin compound supercharger setup giving this
thing some forced induction so it can breathe then i'm going to run this thing full throttle
as hard as i can with as much boost as possible while filming it with the high speed camera in
slow motion just in case something crazy happens i think you're gonna like what i
have in mind let me get started okay i'm all done this is the way it came out
and it's not very often i'm happy with the way that something i built came out but in this case
i would say i'm pretty happy it's hard to convey on camera how mean this engine looks right now
here's how i have my supercharger set up i have two superchargers and a compound configuration
and if you're not familiar with what compounding is whether it's superchargers or turbochargers
let's just say for numbers sake each one of these superchargers makes 10 psi of boost that means the
first supercharger will boost that pressure up from the ambient pressure to 10 psi and then the
second supercharger will boost that 10 psi up to 20 psi and that's going to be our intake pressure
that's the idea of compounding and compound turbochargers work the same way mostly i've seen
them in diesel applications but i'm assuming you can use them on gas too i have a fuel pressure
reference coming off of the intake manifold here that's pressurizing the fuel tank in relation to
how much pressure is in the intake so what that means is as the pressure goes up in the intake
our fuel system pressure goes up and the amount of fuel going in the carburetor increases as the
boost increases looking at my supercharger pulleys my pulley ratio is about five to one which means
that for every one rotation of the crankshaft we have five rotations of the supercharger impeller
however if this isn't enough the way i designed this is to be able to easily switch out the
pulleys if i need to if i decide to speed up those superchargers maybe double or triple the speed
i got the fuel tank full the glow plugs are hot without further ado let me get this thing started
up and see if it sounds as mean as it looks i see a problem already my supercharger pulley is
coming loose i had to stop it there because my supercharger pulley was becoming unthreaded
don't ask me why but this supercharger impeller came with right hand threads even though it turns
in a counterclockwise direction to make boost that makes absolutely no sense i think it should have
left hand threads so it's trying to tighten itself as it gets resistance from that impeller i'm going
to put some red loctite on here and get this thing fired back up one more thing i did do i hooked
up the radiator which i forgot to hook up in the last run but i got it all hooked up ready to go
let me start it up again let's see what it does wow that was a short run but man did that thing sound
mean and that's exactly why i have the high speed camera set up to capture failures like that
it looks like my belt tensioner blew apart i think i just need loctite on everything
i could hear the supercharger whine after the engine shut off while the superchargers
were still spinning i couldn't hear that with the engine running another thing is that the
boost pressure was pushing out my intake pipe all right here we go i got my pulley all
fixed up my intake tube pressed back into the supercharger i made some adjustments there
so it'll hold the pressure and it won't come out and i added a little throttle extension because
i don't really feel safe having my fingers right next to the engine just in case something
happens like this happen maybe something's gonna happen back here all right let me get
it started hopefully third time's a charm looks like all four cylinders are firing and
if i look at the thermal camera i see some heat what is that that's heating up oh shesus that's
my idler pulley that's heating up what the heck i don't know why that's heating up like
that it's kind of weird that sucker's burning hot i just put some motor oil
in there i'm gonna try this yet again didn't get much of a run out of it
but let's see what happens this time Reminds me of a 1000cc Jap Bike all right i think that sounds pretty good
um oh man i got a lot of heat coming off my radiator that's for sure actually i think my
water's starting to boil, its definitely overheating even though i have the radiator with the fan
we're at 235 degrees oh yeah we got pressure in that cooling system those hoses are about to pop i
need to get this thing cooled down really quickly oh there it goes i knew it overheating well i guess that
extra boost pressure definitely had an effect on how much heat the engine is producing
everything is all needs to be cleaned up now whoa all right well i think that went pretty well
there's a few things that i need to change before using this engine in that project that i
have coming up and the first thing i think i need to change is the size of these superchargers at
this point these superchargers are running beyond their maximum rpm for this style compressor
and that makes me think they're just too small i mean this is a four cylinder engine it's not
a single cylinder so i think i'm going to have to go larger on the superchargers i'm not sure how
much pressure it made because i didn't look at the footage yet but when i took a peek it was around
3 psi i want to see more like 8 10 or 12 psi something crazy to either blow the
intake off or make some serious power with this little engine the second thing is i need
to do something with this radiator and fan setup because even though the boost pressure
wasn't what i wanted to see it was enough to increase the air charge in the fuel to the
point where this engine was overheating the stock radiator next time you see this engine i'll have
all those changes done one more thing before you go i have a project that i've been working on with
my sister that i wanted everybody to check out i came up with the idea and i designed this
application around the way a guy's mind works for instance if you're in the store and somebody
sent you a whole list of items to pick up in the store for them in a text message you basically
copy and paste that text into the application hit search it deciphers the entire text message
and lists out all of the items in list form in chronological order so for instance if you're
on your way out of the supermarket and you gotta go somewhere and then your girlfriend baby mama
whoever sends you another text hey you know what are you still in the store i got like five more
items i want you to find and you're like oh my god i gotta be somewhere i gotta go i hate being
in the store you can take that text message put it in the app find it look for it and get out of
the store quickly that's the idea it's different than anything else that i've seen out there it's
an app called text to shop and we have the first version ready to release so i wanted everybody to
check it out first it is still under development i'll leave a link in the description below
tell me what you think tell me what you think about this episode and this project and this
build that's about it see in the next video adios
