Briggs & Stratton V8 part 8

[@brucearudy7874]

Hi, I worked at Briggs & Stratton for forty years as there Packaging Engineer and have seem a multitude of changes come through my door, but this is without a doubt the most interesting. Thank you

[@Desmouffe]

Fantastic machines. They work for many years with a minimum of TLC and when you take them apart there is almost no wear. Love them

[@maggs131]

I've watched a lot of people build things and this is right up there with the most impressive ever built.

[@MrRossi1805]

You are absolutely right. And I’m so curious about the test run!

[@shelbycobra4297]

You make very good videos sir it shows what people can do with a good workshop

[@Desmouffe]

Thank you. My machines are to small for this kind of work but if you give it time so...

[@Corkoth55]

Your skills are incredible. To be building an engine in your garage is amazing.

[@Desmouffe]

The drawingprogram in the computer helped me alot

[@1toonhead]

Finally some who knows how to use machines as they are built. Such a perfectionist with his work. Been a very cool build.

[@trisrush9155]

Have a look at the fan setup on a deutz air cooled diesel (v configuration) it may give you some helpful ideas. 👍

[@redneckracing674.5]

The machining work on this engine is incredible. i have never seen anything like this in my years of experience. keep up the good work!

[@wildcoyote34]

@redneckracing674 if you want to see some really cool home made engines i recommend a guy with a channel by the name of 805Roadking he has made some really cool stuff over the years

[@larrydavidson3402]

I hope those fans work for you. If needed, improvements can be made, but I feel your on the right track.

[@joeromano5607]

Being an engine tech for most of my life I have to say I so very much enjoy projects such as this. Keep up the great work!!

[@williamdejeffrio9701]

Fascinating! Eagerly anticipating the next installment...

[@karlalton3170]

Half of the greatest engineer's are shed builders , just show's what can be achieved Awesome job buddy 😁😁🤘🤘

[@jvmiller1995]

Ford, Harley Davidson, lamborghini (the tractor) Lotos, Apple, Hewlett Packard, and many other famous car companies!!

[@zzzdogutube]

I like that idea! I was worried the cylinders were overheating. I would monitor the temperature of each cylinder to see if you have any spots . That seems like it would help greatly. 👍 It will be interesting to see the outcome of your design. Thanks for sharing.

[@greggc8088]

Nice work on the fan mounting and I'm betting that makes a huge difference. As for the thermostat, I hope that works for you but will share that I use a Hayden Electric Fan Adjustable Thermostat on my 07 Jeep to turn on the cooling fan at low speed after a hot soak when sitting in parking lots when shopping, etc for a few minutes as under hood temp would go crazy high since the engine compartment is small, unventilated, and has catalytic converters in it adding heat. It cured a lack of power problem that followed. It might work well for your set up there if the sensor you're using now doesn't do the trick. Thanks for sharing.

[@Sludge73]

Oh no a cliff hanger! Fans turned out better than expected. Very cool

[@kennethjanosick5939]

What do you call him cliffhanger cuz of all the tacticalshit he's wearing I actually thought it was a knee brace I don't know but the man's the Polish engineering genius and I'm pretty sure the man used to work for a Briggs & Stratton engineering division and he probably designed the 3.5 horsepower Briggs & Stratton vertical engine we back in the day it had plans for a 28 horsepower v8 the board shut him down on his design cuz they said it'd be too much involved so he said screw it I'll do it myself lol

[@Semparo]

Oh Heck yea, love the improvements! Can't wait to see you fire this up!

[@markae0]

Great video. I used similar fans in a cooling project and discovered they are better at pulling air, and do not push air well.

[@Desmouffe]

I'm afraid of the hot air that will go thru the fan. Many plastic parts

[@kennethjanosick5939]

Yes definitely one of the best engines ever seen on KZbin cliffhanger is a polish engineering genius

[@ZippyThePinhead]

Your machining ability is very impressive, very meticulous, much like I would be if I had that ability. Looking forward to the next installment.

[@heftyjo2893]

This is pretty cool! Though my gaming PC has more fans in it than this does. But this should help protect the carbs from getting heat soaked. Perhaps some inspiration could be taken from the Volkswagen Beetle. They use a centrifugal fan driven by parasitic power through a belt connected to the engine crank. Though that fan does have quite a large radius to be able to generate the speeds needed for adequate static pressure. And a great deal of shrouding is used to isolate and funnel the cooler air on the top of the engine being directed down through the cylinders and out of the bottom.

[@Ayden3008]

Pretty cool, might make

[@000gjb]

I just love people who think out of the box and have practical abilities. This channel reminds me of Allen Millyard's channel, another person who's ability I admire. Forget computer fans, this is a nonsense. Franklin passenger motor vehicles in the US in the 1920's used air cooled engines, what did they do to cool their engine's? I would run cooler temperature range spark plugs to stop detonation issues. Back in the day I used to ride a high performance air cooled two stroke motorcycle. I would change to a cooler spark plug on hot days to stop spark plug fouling and detonation.

[@ravenof1985]

depending on the exact specs those fans probably wont do the job, there are "server" versions which will be thicker,louder and move a lot more air. or you could use a couple of small transmission cooler fans as they would fit in that configuration but move way more air.

[@shortribslongbow5312]

Outstanding build!

[@deanedeane4318]

Thankyou for sharing your wanderfull project and journey with us all....... maybe you could build some snow tracks next !!! 😉😎

[@SinsBird]

Can't wait for the next video!

[@aSpyIntheHaus]

Nice work. It looks great mate!

[@GICK117]

Bravo, looking forward to a test drive!!!!!! From New Mexico, via California

[@BigElCat]

Nice home-built sheetmetal brake ! Maybe put some little hoods over the fans.

[@jwca35]

You can get a tach temperature reader from karting stores.mount the temp probe under spark plug an make sure head temp dont exceed 410 degrees Fahrenheit for optimum power.

[@damian4781]

Este hombre es una mago de la mecanica. Todo un professional. 👏

[@Desmouffe]

Grazias

[@scebseeb6462]

I hope to have a large workshop with all kinds of machinery for metalworking and mechanics like you have lad!

[@Desmouffe]

One piece at the time

[@TheDeathskull37]

I also have used computer fans on my oil cooler. The trick is to use high RPM server fans made by Delta. The one I bought push 85cfm each.

[@Desmouffe]

Not a perfect solution, I know. But I don't plan to run it longer than a couple of minutes at the time. It's a display piece. But it was fun.

[@Desmouffe]

The ones I used push 107 cfm each

[@leop9021]

I love your channel.

[@sgrand85]

What an awesome project. Maybe an oil cooler if the air cooling is insufficient

[@g.o.b.2558]

Sweet 👍 Next Step crank shaft driven supercharger👌

[@jakebob5101]

How do you keep your engine oil cool? That could be an issue for cylinder heat because of the oil heating up and breaking down. VW aircooled engines always have a external oil cooler inside if the doghouse that keeps the oil from overheating. I saw your oil pump in a video you posted. Maybe you could make a remote system that could be routed to the differential fan since the fan always turns even when the tractor is idling. Just a thought. BTW great engineering job friend. I impressed.

[@Desmouffe]

It should not be a problem. I'm not planning to use the tractor. It's a display-piece. The fun is in the making-process. But cooling-fins on the oil-sump ?

[@aSpyIntheHaus]

Oooo, you might need 8 of those. We'll see

[@jwca35]

Build a air dam in your hood to force air on those cylinders get rid of those computer fans. You dont need them.we take the shrouds off the engines. the air moving over the engine at speed is plenty.on cooler days we even tape up the flywheel housing. Good luck.

[@gordtemple764]

Good work 🍻👨🏻‍🏭🇨🇦

[@VYXtreme]

Those fans will be insufficient, you risk engine seizures from over heating, even an SPAL 5.2” at each location would be barely enough. Those computer fans won’t last, they cannot tolerate vibration. You have time to make some changes 😊

[@Desmouffe]

Of course you are right. If this engine was meant to be used in a "lawnmower race" or something like that this is not enough. When I started this project the goal was: Can I build an engine in my garage that maybe, maybe will start and run. It was never meant to leave the testbench. It has many faults and weaknesses. The cooling is only one of many. It will be a display-piece in my workshop and maybe a startup on bbq evening.

[@jvmiller1995]

@@Desmouffe Don't worry about him he is just jealous he has not done something this cool. Besides some of those small fans put out serious airflow an unless they are going to be out in the weather I doubt they will go bad. From the last video of the engine running I did not see no big vigrations. Oh course I hope you are aware we are all going to demand you put this on a dyno. Then the next logical step would be a screw blower or turbo's. Because why not. It is a very talented build you have done with some limited tools too. I mean you have more than most of us but not nothing too crazy.

[@Desmouffe]

@@jvmiller1995 No, no big vibrations but I'm not putting it on a dyno. I don't dare. My biggest fear at the moment is the crankcase. When you cast aluminium I think it should be under pressure. In my case I used an open mould, not even a high funnel ( 10 inches ) . So the density of the aluminium could be better. My fear is the threads for the long studs that keep the cylinders down. I don't dare to tighten them with the right torque.

[@donquihote6023]

I think you are correct. I don't believe those little fans will move enough air I figured he would go the old VW fan and shroud with an oil cooler method. Use Radiator electric fan instead of belt drive or these tiny fans. Create an air intake box and fan mount in front of the Engine and run Ducts back to the sheetmetal shrouds. Not as pretty, but, greater airflow.

[@kcraig51]

Here in Tennessee USA, we don't have to worry about snow storms delaying tests. When we do get snow, our "storms" are usually 2 inches. Thursday (2/23) it's forcast to be 80 degrees F (27C).

[@Desmouffe]

I was over working in Newton, North carolina 2009 four weeks in january. It was quite crispy...

[@erautosales8673]

Looks great. I noticed you had a home made metal break. I assume you made it. Very nice.

[@ramishrambarran3998]

BMW boxer R1150RT motorcycle had a 2-stage oil pump. One stage for the engine, 2nd for the oil cooler. The Police version had a cooling fan on the cooler. Trinidad & Tobago. West Indies.

[@mechcntr7185]

Very nice!

[@hellboy1995ish]

no way to implement cooling channels in the block/cylinders somehow and make it water cooled? or make with a fan in the front and rear set up to the crank and make blow trough with a hood? keep up the work! love the build

[@Patriot-Logic]

You and Millyard need to collaborate!

[@Desmouffe]

That would be something. He is the best.

[@kurtpena5462]

Have you considered an oil cooler? More oil volume would be a bonus too.

[@mathuetax]

My thoughts exactly, much like the VW boxers. It should be interesting to see if the computer fans affect the temperatures at all, I didn't recall hearing what they got up to in the past.

[@Desmouffe]

I will only use this engine short periods at the time so it will not be a problem. It's a display piece.

[@Desmouffe]

Each fan moves 183 m3/h acc to the datasheet

[@mathuetax]

@@Desmouffe Ahh, got it. It'll certainly be an impressive showpiece!

[@dusterowner9978]

great solution to your temp sensor but was wondering if a heat conductive paste would be applicable to transfer the heat ?

[@Desmouffe]

Yes, it came on later. I didn't have the tube ready when I did the video.

[@errolpoxleitner9586]

Very good.

[@florentleider222]

i wonder if the air cooling system is not undedimensioned, air fans from computer are not ready to blow so much air . Reading of temperature of cylinder heads is a must to check the cooling system.

[@Desmouffe]

I guess it is, but I'm not planning to run it longer periods.

[@d.jensen5153]

While you may want rubber mounting for the fans, I don't share the common opinion that your two fans are inadequate. The coefficient of convective heat transfer increases dramatically with any movement of air, and your fans provide a fair amount of air movement. It's possible there's a more optimum flow pattern though. Just flipping the fans over to suck air away from the engine rather than blow air onto the engine, may improve cooling.

[@Desmouffe]

Yes, but it will kill the fans. A lot of plastic parts.

[@NuffMan_]

Computer fans are made more for silence, and less for blowing air. There are indrustial grade fans, that will blow A LOT more air, with proper bearings and such to withstand the use. They also really hate unstable voltage or AC, i had a pc fan on my moped (cant remember why lol) my battery went bad so i drove it a while without a battery, and the fan went up in smoke as the battery wasnt ballasting the charger, it gave a really dirty poweroutput

[@Desmouffe]

Hey, I'm on a budget here...

[@NuffMan_]

@@Desmouffe Cheap but powerfull option could be using eletric car radiator fan, but it would need more duct work to fit it infront of/behind the engine. Nevertheless it would be a good idea to add some sort of temperature sensors around the engine to monitor the temps, maybe at the first and last cylinder banks

[@beargibson3100]

Why not build a shroud to use the flywheel fan to help move more air? Looks like you have to know how to do it?

[@54RKY]

What is it 4L ? I remember the brig's n Stratton's from my grandfather's mowers/Rotavator etc. This is truly awesome engineering 👍

[@bluev88]

Probably, these wont be enough. The amount of air is less you could think and pressure is very little. Try perhaps instead radial types, mounted on top of your housing. Look at engines like Deutz or Eicher for inspiration.

[@CarsandCats]

Subscribed!

[@carlgibson4588]

I'm wondering of a splash arm would be benificial inside the crank to get oil up into the cylinders?

[@Desmouffe]

I have an oil-channel running over the crank and holes over every crankpin. They will throw oil up in the cylinders (I hope )

[@Sam-hj8hy]

Those little PC case fans may not cut it. You can get little 6 inch (15ish cm) fans that move a lot more air than those. With fans, usually the higher the ampere draw the better as that will give you clue as to how well they will more air. The higher amp draw has move power at the same votlage...so more mass of air can be moved.

[@Desmouffe]

Acc to the datasheet each fan moves 183 m3/h

[@magnusrosenqvist4388]

Måste nog lyfta på hatten, fan va du är duktig 😃

[@Desmouffe]

Tackar. Men det mesta ser bättre ut på bild. Den har allt sina brister men det är en kul grej...

[@garyshoaf5699]

I don't think the thermostat is necessary. Engine is going to require all the cooling it can get, so the fans are going to run constantly anyway. Also, why not use the flywheel fan for additional cooling.

[@Desmouffe]

I have already removed the thermostat. It was to slow. To use the flywheel-fan is a bit complicated. It sucks air in the center and there is now the pulley placed. The drivebelt is in the way and also the starter motor.

[@rodneydaub3812]

what happened to the fan on the flywheel? Those two rinky dink fans will have to compete with the air pressure from the flywheel? Maybe I'm missing something

[@Desmouffe]

I'm not very good at sheetmetal-work. It had to be a complicated design. I was afraid it would look terrible.

[@thundermite1241]

I kinda want a dino run on this beast

[@pontiacg445]

I think your fans are upside down. They generally scoop air towards the motor side, so the way you have them mounted you are trying to force cold air down on top of a hot engine. It would probably work better to let hot air naturally rise, or at least in my opinion. And as already stated before, those look to be PC fans. If they are, they are way too slow and way too open a design to ever generate any significant pressure. Doesn't mean they can't work, just that you need to be really really careful with ducting, too much will choke any flow at all in which case you'd be better off without any of the shrouding.

[@Desmouffe]

If they suck warm air up they will be damaged. Many plastic parts. The capacity is 183 m3/h on each fan acc to datasheet.

[@TheMrDarius]

When I saw how you put the screws in the fan diagonally, I thought to myself “I see he is a man of culture as well.” 🥹

[@oldschoolmotorsickle]

Wait-the engine has a cooling fan built into the flywheel; why not utilize it to push cooling air through a sheet metal ducting system? Great project and video series so far.

[@Desmouffe]

I have the starter-motor and the drivebelt around the flywheel that complicates. I did not know how to solve that.

[@oldschoolmotorsickle]

Now I understand. It might have made a tidy solution except for the other items in the way. I’m sure your electric fan solution will work just fine. Thank you.

[@ramishrambarran3998]

A temperature check on each cylinder would show which runs hottest...............the one you should install the THERMOSWITCH on. A 12V Automotive radiator fan would do a better job. An outboard oil cooler should be considered. Deutz diesel engines are air cooled. Trinidad & Tobago. West Indies.

[@Desmouffe]

I have removed the thermostat. It was to slow, it was a stupid idea anyway. Now I have a switch on the dashboard instead and run it all the time.

[@ramishrambarran3998]

@@Desmouffe Yes. I understand. Because the vehicle, the thermoswitch is used in the channel where it is in direct contact with hot coolant coming out of the engine. Trinidad & Tobago. West Indies.

[@otisdavies1861]

Have you thought of building a few of those engines for the junior drag racing community. I know they use a air cooled v twin for Jr dragsters. It would be great to see your design on a Jr dragster.

[@Desmouffe]

To be honest, It's not a very good design...

[@otisdavies1861]

@@Desmouffe yes, but it could be. With some refinement, it could be a wonderful design. I am agreeing with you. Unfortunately I think your design is fascinating and has real potential

[@KapitolOner]

When the video ended i was like "NOOOOOOOOOOOOOO!"

[@Desmouffe]

Sorry. I will not do that again....

[@glennkristiansen]

Spennende 😁👍

[@shawnmrfixitlee6478]

Wonderful job ! Do you think some screen over the fans to protect the blades would be good ?? Can't wait to hear it run again ..👍👍

[@Desmouffe]

Why not. Always room for improvment

[@shawnmrfixitlee6478]

@@Desmouffe sure does look so nice with the fan shroud you made ... Excited to hear it live again !

[@chauvinemmons]

Any screen will drastically reduce airflow. A single wire creates more drag then you could ever imagine

[@shawnmrfixitlee6478]

@@chauvinemmons No .. a Computer fan wire framed guard would work fine with no restriction at all !!

[@Wooley689]

The suspense is killing me.

[@kyleteal5888]

Why didn't you run any thermal paste or do you think your machine finish is good enough?

[@Desmouffe]

I did use thermal paste but but the tube was not in reach when I shot the video. But anyway the thermostat was a bad idea so it's removed.

[@michaelandrecht7508]

Check out corvair fan set up they are making new ones with better fans and Pulley's they are reasonable

[@NCPFunK]

Tjena :) Du råkar inte känna Sten från Gnesta ?

[@Desmouffe]

Nej, det gör jag inte,.

[@the_car_guy5915]

Imagine building a mechanical fuel injection system for this thing

[@jwca35]

You need a air cleaner twice that size for optimal breathing.

[@Desmouffe]

That is something that have been troubling my mind also. It looks a little small.

[@jwca35]

Each of those cylinders require a 3 inch round 4 in tall for optimal performance on the d;yno. I race these 6.5 engines on highspeed go karts. We get 23 hp out of modifed engines.

[@Desmouffe]

Something to think about

[@lllmmggg]

Some people think those fans aren't enough,,I DISAGREE BECAUSE ANY AIR FLOW AT ALL IS BETTER THAN NONE AT ALL!!! I DON'T THINK I WOULD HAVE USED THE TEMP CONTROL UNIT,I BELIEVE I WOULD HAVE THEM CONSTANTLY RUNNING!! BECAUSE THAT'S WHAT THEY NEED! CONSTANT AIR MOVING ACROSS THE FINS!!

[@Desmouffe]

Yes, I have already removed the thermostat and replaced it with a switch on the dash.

[@sodderbridge]

Don't you have recycling centers there? I can get way more powerful server fans for less than a cup of coffee from local recycler.

[@Desmouffe]

No, I live a little off

[@SterlonJrGill]

Wouldnt be hard make it water cooled with large pvc pipe/ pipe caps & some O rings. Other wise be like vw & corvair down fall of being air cooled ..good cars but air cooled dont last long

[@phooesnax]

I think you will need more and thermostat is unneeded.

[@Desmouffe]

I know, but it's fun

[@phooesnax]

@@Desmouffe absolutely:-0).

[@dr.hugog.hackenbush9443]

So you basically made an air cooled Ford flathead..🤔

[@Desmouffe]

You could say that. I like Ford flatheads.

[@scotcoz]

Synthetic Oil ? Redline

[@Desmouffe]

Fully syntetic motor-oil .

[@TheFogLakeshore]

I know it's in development: The carb is going to freeze in sustained cold temps w/o a heater isn't it? The intake air system is terrible, guaranteed the outer cylinders are running lean and inners are choking. The headers could have been square tubing at right angles, while the intake should have gotten the airflow treatment, that would have been better, by a lot. The entire philosophy is reversed. I wonder if the outers are even running or pushing at all. It does sound like it has carb problems as well as a consequence of all of this, and it's just running bad. It is 'firing' on all 8, more or less near when it's supposed to, and you can't tell in all that racket. At least a total manifold change, or dual-carb, or both, or port injection. I hope to see all of those things. I *know* this guy is going to argue that his intake is ok, or that he can ignore that he's going to end up with either a low or high-riser type setup to get 1 or 2 barrels to work on 8 cylinders. What he should evolve to is an open plenum 2 carb setup with direct tubes to the cylinders, as nothing else has to be in that space. He should be able to fit that basic engine element under the fan contraption. He's getting heat because of the intermittent leans all over the place, outers mostly. If he fixes that, half the engine is running on choke. It's ok on a brigs or whatever but the intake just ruins it. It's a must-fix otherwise it's a showpiece and what a disappointment, we've seen The Munsters.

[@scotthayes1804]

Super cool stuff, all of it but the most amazing is the cam and crankshafts. How did you ever duplicate the lobe profiles?

[@Desmouffe]

I took the B&S camshaft and lifter. Measured the lift, turned the shaft 5 dgr, measure until I got the data for 360 dgr. Then transfered it to my camshaft. It was a little confusing. When I started the engine the first time, it only ran on 6 cylinders. I found out that I had shifted nr 4 and 6 cylinder. I had to make a new camshaft, or shift two ignitioncables. I shifted the cables. So now I have a quite styrange fireingorder but.... It runs.

[@suecobandito8954]

Thought you were a Swede.

[@Desmouffe]

I am

[@C4_Corvette_man]

Try a v18 for shits and giggles

[@Desmouffe]

Why not...

[@C4_Corvette_man]

@@Desmouffe excited to see this

[@C4_Corvette_man]

@@Desmouffe no way you do a v18

[@Desmouffe]

@@C4_Corvette_man No, I guess not..

[@C4_Corvette_man]

@@Desmouffe compromise? V10

[@ladronsiman1471]

what a great face!

[@villiersman951]

rather the using a thermostat i would have chose a thermistor for the fans en.wikipedia.org/wiki/Thermistor

[@Desmouffe]

I have been working i the swedish industry for 40 years and most of the time as an electrician, so I know what a thermistor is. If so, you need a compairing amplifier that control the revs. The thermostat was a stupid idea so I have removed it and put a switch on the dash.

[@grobischmiede9301]

👍🏻👍🏻👍🏻👍🏻