• If you like what you see here and your interests are compatible with our 30,000 other users, Welcome. Fill out the registration form with your interests, your real name (seen only by moderators) and your city, state or country. Be certain that you have spelled your email address correctly! Your account is then manually checked and approved.

Le Roi V-8 Stationary Engine

Mackiebrat

Registered
I saw that on E-bay....my 540 drinks enough gas :eek: I can imagine an 844 is a full blown gas-a-holic (Both these dinosaurs were born in 20-25 cent @gallon gas times)....I crank it for interested customers ( I run a generator-starter-alternator rebuilding shop for specialty hard to find units)
When she barks to life,I've seen grown men giggle.They have never seen or heard anything like that raspy V8 gurgle @ 1000-1200 RPM.When I open her up to about 1900-2000 ,they block their ears.I can't wait to set up a full load heat grid for that 480V generator and listen to that V8 throw her shoulders into a real load.
Somebody find me a deal on an old diesel locomotive dynamic brake roof top grid w/the cooling blower.:wave:.I guess I'm gonna have to get some ear protection too.....:crazy: MB
 

slip knot

Subscriber
Last Subscription Date
12/27/2019
A loaded engine sounds so much better than one just loafing along.

I ran the 540 on a 1/4ly exercise cycle but seldom did we load it up. The pump it ran was a monster that would flood the chamber out in just a few minutes. But she did sound good loaded.:D
 

Mackiebrat

Registered
Man you are bad....:p.I've now got that hunk of iron as a screen saver.Lord have mercy at the size of it !What a restoration project ! ....Like a Rolls-Royce V12 Merlin engine on steroids.Torque enough to pull the state of S Carolina over 100 miles on skids.:eek:
Can you imagine that as a locomotive engine ? you would need 12 cars of gasoline behind it to go a 1000 miles.Slow turning gas hogger dinosaur.I love the pony motor mult-V belt drive to the secondary Starter drive gear.(probably took 20-25 HP to roll her over)Wait until I tell the guys in the ERA (Electrical Rebuilders Association) about a flat-head 4 cylinder starter motor ,that is hand cranked !The only thing electrical that I see on the whole business are magnetos for each engine.I can't tell if there is a Mag for each bank or not. Probably it does have 2 mags just to keep the wires down to 6 in the mag cap (can you imagine a 12 wire mag cap ?)
I down loaded every picture.It would be interesting to find someone in Arkansas who heard it run under load Thanks for the link post Old Stuff.what do you do comb Craig's List for engines ?.MB
 

I like oldstuff

Registered
Last Subscription Date
11/09/2015
Mackie, just buy the thing already.
Get a 1000 gallon tank for gas and put the thing on a timer. Have it fire up at idle before bed to relax you. Then fire up at 1000 rpm with the alarm clock.

Hell, it's only money and ya can't take it with you in your coffin.

Personally I'd like a R2800 on a stand to fire up during parties.
 

Mackiebrat

Registered
Funny you should say to crank her for relaxing.(Sounds like a couple ol' gals I use to know):crazy:
But listen to this.I've already decided to put a remote start on the 540 V8 w/the generator.Imagine the looks on faces when she coughs to life and they least expect it at engine shows.(I am a Brat)I could post a caution sign : Beware : Standby generator can start at any time. Beware ! I could also hit a button to activate a repeating Ah-oooooga ,Ahooooooga horn just be fore I hit the remote start.This engine starts very fast ......most of the time :O
Its got a very simple 12V starter and separate 30 amp generator system.The Starter is a Delco 1950's diesel size.I'm going to 'freshen both units up.
For ignition its pretty much a stock V8 distributor & coil point type system.
Looks alot like a mid-1950s Buick or Olds V8 set-up.
I'll set that up w/a mid-1970s Ford ignition amplifier.The points will just trigger the amp and make that stock coil hot hot.I've done this before w/older point style ignitions.
The trick now will be to vary the engine speed down to a idle and up to operating speed of 1200 or higher by remote control.A small servo motor on the governor fine adjustment screw is all it needs.
To round out the show some large easy to read Dials (best) or large digital meters of every possible measurement right down to water temp top and bottom of radiator.Oil temp & pressure,Vacuum (it already has that) DC volts & charging amps.A huge RPM Meter Also.AC volts & amps going to grid load.Gas consumption @ hr.Hey it's a labor of love fun hobby ! MB
 

John Schwiebert

Registered
The last year I went to summer camp there was a National Guard unit there with some 10 ton trucks. I had never seen a 10 ton before and if I remember right they had the 844 cubic inch engines in them. This was in early to mid 1960's.
 

Mackiebrat

Registered
Engine Nut.... I appreciate those 2 pictures you posted.I just bought a good running 540 V8 hooked to a 50KW 480V generator that doesn't have 50hrs run time.
That manual you posted from, has the lay out and look' of a Motors Manual.
I have a pristine Motors Truck & Tractor Manual from 1950 it lists specs on special engines like Hall-Scott & Buda but nothing on Le Roi.
I'm wanting take this engine to shows.2 tons of Fun !I still run a starter -generator shop 30 hrs a week.(I'm retired mornings until noon....customers won't let me quit !) MB
 

Mackiebrat

Registered
I need to correct a stat I quoted on how much power it takes to get 50,000 Watts out of the generator.Rereading the 100 HP I wrote ,I said whoa..that's the generator's electrical output.The input power at 1200 RPM and at 50-60% efficiency needs all the power that 540 V8 can muster or about 150-60 HP.Right in her range.That has so much built-in much torque ability a hard pull load would not cause a flickker in the lights.
I read some where the torque of those 540 V8s is in the scary numbers.
I recently added a 1970-80s Ford ignition amplifier triggered by the OEM points and she runs sweeter.Starts instantly too.I use a 'hand' choke too .(My left hand ,really) until I get the carburetor adjusted richer ,she pops and spits now and then.
It probably is set up for LP gas..and I know very little about carburetor setting for that stuff.It has a 1.5 inch pipe leading to the pressure regulator.
I think I'll send the Carburetor down to my friend in Georgia that rebuilds antique Carbs and let him 'freshen it up,w/a good cleaning and proper settings for gasoline.
The next change is opening the spark plug gaps to 40 thousands for a better slow idle...right now she 'lopes' w/the governor @ 250-300 RPM .I think the heavy flywheel effect of the generator armature probably effects low speed running, also.When ignition is cut...it takes a right good time for the engine to stop. Msckiebrat
 

Mackiebrat

Registered
Up date : The Ford Ignition Amplifier fattened the spark nicely. Opened the plugs gaps to .45 thou. Much better idle,not so much 'lean mixture' spitting and barking.Next on list is hook up a test Vacuum Gage and set timing.There is a factory Vacuum gage on the Dash board,but it is not readable.I have a Snap-on MT2700 0-30KV spark plug wire volt tester that is a huge help in diagnosing and tuning ignition systems.You can see instantly how much of the ignition coil is demanded to fire across spark plug gaps.These testers are on E-Bay @ good prices.I've found over the yrs older engines don't demand alot of Voltage because of lower compressions.None of the 8 plugs demand reached 10K even under 'snap' acceleration w/45 thousands gaps.I probably will go to 65 thou...later just for even better idle.
The reason they spec them @ 25 thou. originally was because the point type ignition degraded much faster from peek performance than today's' "Hot stock' ignition...it was a whole different world then I know I grew up w/it.:p
I'm planning to buy a new Twin Axle Lennard Trailer to keep the old girl on.....(she's worth it:rolleyes:)
One of my customers runs a custom detail-er and restoration shop.I stripped a Ford Alternator naked to the bones for him to detail and paint...and I'll reassemble.In partial trade He is gonna detail this entire rig for me :D .We are working out a good Le Roi paint scheme.The Black,the orange,the OD green & Navy Grey I can handle....but Le Roi colors of 1950s blue,red or "Leave it to Beaver' colors ain't happening !
Oh I have dibs on a 10,000 watt 480V Shop Heater for a decent 20-25% load ' for the generator.....MB
 

enginenut2

Registered
Age
79
Mackeybrat, The scan came from Motor's truck and tractor repair manual---sixth edition (1953). It only had 6 pages on the Le Roi. If you need I can have a local copy made ---send me an e mail w/ your address.
 

enginenut2

Registered
Age
79
If you go to Wikipedia, search for M123 & M125 10 ton 6x6 trucks there is a list at the bottom for the TM's (technical manuals) for these trucks ---the early ones have the Le Roi and this would be the best information available besides a factory manual. I tried to find one we could reference online but no luck sofar. Also take a look at OLIVE DRAB for some information on these trucks.
 

Mackiebrat

Registered
Engine.......That would be great to have those 6 pages. I have the 1950 3rd Edition of Motors Truck & Tractor Manual. Anything you need from it you got it. (y). I am an adviser on the ERA (electrical Rebuilders Assoc.) Any starter , generator , alternator Voltage Regulator help you or any one reading this needs get in touch w/me. 843-455-8062 or mackiebrat@gmail.com...or just come by 2990 Emory Rd ,Myrtle Beach,SC 29577. The old man (75) is open 12-6 M-F. I will crank up 540H V8 for you ! It never fails to make folks smile.My work is my hobby. The old girl sits on her custom made twin axle trailer and we getting her ready for shows.
 

Mackiebrat

Registered
Hi all, I was looking for a bit of info on an older v-8 stationary engine that I worked on many years ago. It filled up the better part of a 14 foot flat bed that it was sitting on at the time, Le roi was embossed on the side of the radiator, as I recall it had 2 sets of siamesed cylinders on each side, twin magnetos, twin exhaust, it was covered in it's own house that contained a gas tank as well. It was all set up to set and hook a driveline to the clutch. I finally got it running and if you revved the engine to 1800 rpm it would very easily rock the chevy truck it was sitting on a bunch. I know this isn't much to go on but that is all I remember other than it ran incredibly smooth and was a big chunk of iron. So Le roi or Waukesha or something. Thanks for any help. Tad
Mine is still setup for vapor and I'm thinking about keeping it that way. When were running it at work we ran it off of natural gas from the cities gas lines. the meter had the regulator there. I didn't think to grab the regulator when we tore the structure down. I'm not sure it would have worked with LPG anyway.

I don't have a "load" for it so I'm thinking I could get by with a 100lb propane tank. may visit with the propane guys that fill my tanks, see what they recommend.


Its one of those "when things slow down" projects.:D
Tad that sounds like a Le Roi from the 1940s maybe early 1950s....for a start.Have you thought of a Fuel injection ? I've thought of putting a fuel injection system on my 540 V8 just for better control.I despise carburetors.(To me they are gas toliets complete w/a float)
 

DKamp

Registered
Carbeurators are fuel injection systems that relyonly upon gravity and air demand, to meter fuel...

Atmospheric differential analog fuel injection... ADAFI...
 

Mackiebrat

Registered
Well Denton ,NC 4th of July 2020 has come and gone....and no space was available to display the V8 Le Roi.I got an auto -reply E-mail before the show that they would 'get back w/me soon Nada Yet....I can not find a single engine show between here Myrtle Beach,SC & up state New York for August.2020 apparently the summer is completrly shut down every where. It is slowly dawning on me that no shows are ready for a large V8 Engine display on a 10 ft X5 ft trailer and 4WD Crew cab GMC.I am stunned there is no central info about engine shows over the entire N American Continent. It is still almost entirely a local...someone heard about it...it might happen,we are not sure...I lost the contact ,they died ,or moved and shut down completely because of Covid 19 thing....I guess it is impossible to calender shows and post so a person could look and say....I'm going through East Overshoe Ohio on the way to Tim-Buck 2 Michigan in /sept I wonder if there is a show in Over Shoe Ohio on those dates ?....let me look ........
 

slip knot

Subscriber
Last Subscription Date
12/27/2019
The Wuhan has everything shut down. even around here, theres nothing going on. they even cancelled the fireworks show. This past Friday the local dirt track had a race ,175 cars turned out, 3X the norm. everyones thinking this may be the last race of the year.
 

Top