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