Welcome back to Warped perception.
This is episode 5 of the see-through engine series.
If you haven't seen any of the previous episodes.
And you want to watch those first.
They're all in the series playlist.
In chronological order.
If not I'm going to jump right into it.
And bring you up to speed.
Now in the previous episode I try to blow this engine up.
By running nitromethane.
With aggressive timing.
And just pure RPM.
And to my surprise the only thing that happened.
Is that it blew a head gasket.
now this is the engine with new head gaskets installed.
A new transparent head.
Oh and I changed the oil.
that's how the oil looks from the last episode.
Wow that's strange it's kind of like jelly.
Look at that.
I don't know what that is.
But that's what we have left over from the nitromethane blow-up attempt.
There's some metal shavings and stuff in there.
But nothing really crazy.
Now before anything I'm going to start this engine up.
And show you that it's in perfect running condition.
Before moving on.
That sucker has compression look at that.
It's vaporizing.
all right as you can see the engine is in perfect working condition.
Even after all that abuse.
Now that we know the engine runs.
I'm going to up the ante and add nitromethane.
Aggressive timing.
A turbocharger.
And last but not least a dyno.
So we can measure the performance of the engine every step of the way.
And see which modification makes the biggest difference.
first thing I have to do build the dynamometer.
I decided to go low-tech and build a literal brake Dyno. out of a basic disc brake kit.
Some creativity.
And a bit of Machining.
I think my Dyno design.
Is going to make it really easy for anybody to understand.
What horsepower is.
And how it's measured.
This Dyno is also going to allow me to load the engine.
As well as track the horsepower output.
Through each modification.
To see which one is making the biggest difference.
So the brake Dyno is installed.
And like I said before.
This is a literal brake Dyno. so I am literally going to be measuring how much brake horsepower
this engine is making.
And if you're not familiar with what horsepower is.
Horsepower is work over time.
And 1 horsepower equals lifting 33000 lb.
A distance of 1 foot.
In 1 minute.
to calculate the horsepower.
We need to know how many foot pounds of torque it's producing.
Now 1 foot pound of torqueperiod is created by one pound of force.
Acting at a perpendicular distance of 1 foot from the Pivot Point.
The Pivot Point here is our crankshaft.
But in this case the distance from the center point of that shaft.
To this pin up here.
Is exactly 6 inches.
come up with since we have 6 in whatever measurement we come up with.
Will just divide that in half.
And that will be how many foot pounds the brake is generating. and last but not least
the way with that we're going to apply pressure to the brake rotor.
Is with this master cylinder right here.
And the way this works is I kind of rig this up.
So we can turn it And lock it into each position.
a place your bets right now is that how much horsepower does engine can make.
Because we're about to see.
I'm going to the control the throttle.
While Diana gradually increases the master cylinder pressure.
Increasing the load on the engine.
Until we get that sweet spot. and we're at the maximum amount of torque that this engine
will produce.
Oh no the head cracked.
That was a pretty good run.
Especially considering that we don't have a proper spark plug installed in the engine.
I calculated about 2.5 horsepower.
And about five foot pounds of torque.
it looks like the load does make a big difference.
Because this right here is the first time I have ever cracked the head.
And there's even a little tiny pieces of glass inside the engine cylinder look at that.
next thing I'm going to do is remove the transparent head.
And mount the stock head in its place.
and this is going to be a great comparison between the make-do spark plug in the transparent
cylinder head.
And a proper spark plug and proper compression with the stock cylinder head.
Let's run it ready to go.
Stock head gasoline let's see how much power it makes.
Okay that was a great run.
Now it's time for us to calculate how much horsepower the engine made.
And unfortunately I forgot to install the tachometer.
I decided to pull the engine back into the garage.
Install the tachometer that I forgot to install in that previous run.
And do one more run on gasoline with an accurate RPM measurement.
To get a good Baseline on what this engine is making stock on gasoline.
Then I'm going to move on to the nitromethane. this is a tachometer that I'm going to be
using for this episode.
And I don't know about you but I like when I see a product being used in a real situation.
Because if I buy it I know what to expect.
In this case is going to get used and abused.
And if it fails it's going to be on camera.
And if it doesn't you know it's good.
So if you're interested in buying this tachometer.
I put a link in the description below because I see a lot of cool uses for this.
Including this one.
Tachometer is installed and it looks fantastic.
Ready to do our first accurate Baseline run on gasoline.
Alright that's our background.
Run number 1 accurate Baseline gasoline.
Alright let's see how much power this makes.
alright so apparently.
I didn't account for this screw vibrating loose inside of the scale.
I'm going to put the scale back together and do one more run.
It's always something.
I'm just going to get some red Loctite and fill up this screw.
Put this back together.
I definitely picked the right scale.
Because this thing went right back together again.
Hopefully our scale doesn't break this time.
Ready baby.
so that right there is almost exactly 9 foot pounds divided by 2.
Which is 4.5 foot pounds x 3600 RPM on the money.
Which equals 16200 divided by 5252. which equals 3.084 horsepower.
That's pretty amazing that this thing after all this abuse is still making the rated horsepower.
Time for the Nitromethane.
I just have to change a timing but Nitro in the tank and ready to go.
Okay so that was a fantastic run pretty entertaining.
We're going to calculate the horsepower real quick.
We were at 4000 RPM. we're going to multiply that by our foot pounds of torque.
Which in this case is 14 divided by 2 equals 7,
equals 28000 and we're going to divide that by 5252 to
get our horsepower number.
Which is 5.33 horsepower on nitromethane.
That was pretty impressive 5.33 horsepower on nitromethane.
With just a little bit more timing.
And I opened up the needle for the carburetor all the way until it was almost falling out.
To get as much Nitro in there as possible.
So for this next test I'm going to take the sequential turbo charger.
Off of an SL 65 and modify it to fit on this 3 horsepower engine.
okay I have the turbo all installed on the Briggs.
I mean it looks like something I haven't ever seen before.
I've always wanted to put a turbo on one of these small engines.
And I just never did.
But now it's done.
I put a spring on the wastegate here to keep it closed.
Because I'm hoping to build some boost.
I put a viewing window here on the intake.
The turbo is being lubricated by this Loop tube.
The only thing I don't like about the way that this is set up.
Is that I had to use a wet system.
Which means I have the carburetor mounted to the turbocharger.
And the turbocharger is pulling in the air-fuel mixture.
Compressing it.
And then forcing it into the engine.
I don't like that because that's kind of how the first forced induction cars were set up
with this wet system.
And there's a lot of problems with this but I think it's going to do for this.
And now that the turbo is mounted modified and ready to go.
Let's see what the engine does and how much horsepower it makes On turbo and nitromethane.
Okay so that run was kind of disappointing.
We maxed out at about 6 foot pounds of torque at 3500 RPM.
Or actually 3 foot pounds because we need to divide that in half.
So only 3 foot pounds at 3, 500 RPM. no wonder why they don't use the wet system any more
for turbocharged vehicles.
It made last power than the naturally-aspirated setup.
so what I'm going to do is I'm going to try one more time.
Tune it a little bit and give it as much fuel as possible and see what it does.
Hopefully it makes more horsepower else its going to be really disappointing.
Oh there goes I think it made more power.
I heard the turbo start spooling up and making some boost.
Did you hear it it went woohoo.
so that got me excited I heard the turbo start spooling up and it was like woohoo making
boost.
I don't know where all that oil burning came from.
It could have been from the bearing in the turbocharger or from the piston rings.
maybe the piston rings are getting messed up.
If you listen the engine is making kind of a little creaking noise.
So I don't know what that is.
But with this run it maxed out at about 7 foot pounds of torque at 3650 RPM.
And I don't know if it was that much better then the naturally-aspirated nitromethane run.
But let's do the math real quick and we'll see.
So we got 3650 RPM x 7 foot pounds of torque.
Divide that by 5252 and that's our horsepower, so.
the numbers don't lie unfortunately it only made
4.86 horsepower With the turbo on nitromethane.
So that's kind of disappointing I'm sure this thing will make way more power.
But I'm going to end this video right here.
Because this thing is taking just way too long.
This was a lot of building and everything else and it didn't blow up.
It didn't make more horsepower than the nitromethane alone but.
yeah if you want to see another video on these engine I'll definitely do one.
I'm thinking maybe just fix these problems because.
I'm sure that this thing has to be able to make about 8 or 10 horsepower with the turbo
That's just my guess.
I don't know how I can get it to work maybe at a fuel injector.
Some type of engine management system maybe.
I'm going to look around and see if there's a company that makes that.
And maybe I'll bring it up in another episode it was kind of fun.
So let me know what you think thanks for watching.
Hopefully you enjoyed that long painful episode and process I'm trying to get more power out
of this engine.
But I think I maxed it out I mean.
Putting a Turbocharger and nitromethane and timing on this 3 horsepower engine.
it still didn't blow up and that's pretty amazing.
So tell me what you think thanks for watching and see you next time.
This is going to be so cool you know how many people have wanted to see this thing Dynoed
on nitromethane a lot.