Secrets Revealed! 1200 HP 260 ci Chevy LS! Tom Nelson reveals his secrets!
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- čas přidán 10. 07. 2024
- This is a UNIQUE engine. The secrets of its design are really amazing. Join Tom Nelson as he explains in detail the extraordinary design of this engine to compete in River Racing Boat Competitions. WATCH IN VIVID 4k VIDEO.
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This man is a genius when it comes to high horsepower engines
He is and as a matter of fact I'm having him build my next engine but need to get another 10,000 of the 53 grand !
tom nelson - "air is not a good lubricant"
air hockey table - "am i a joke to you?"
in a oil wedge bearing it is not.
This shit made me laugh
aussi3212 Woooshhhh
actually it doesn't lubricate on an air hockey table... it suspends the puck
Tom is a true Rock Star !
It’s guys like him that Tirelessly Work to advance innovation!!!
5 mins full boost! Shoot, many street cars will blow up after 1 minute full boost 🤣.
Great work!!
LSX ATLANTA more like 5 seconds of full boost
Thats what I'm sayin! We all could learn from this, regardless what brand we use!
Did it have any load on it?
LSX ATLANTA
Guys with diesel engines , specifically cummins platform run 100psi daily driven for millions of miles. All this stuff Toms talking about allot of diesels do already. Diesels arent as fast but there is stuffed to be learned from them.
@@markrich3271 im pretty sure tom knows this. the point is a gas engine is a different animal
I'm blown away by this little monster. Out of all the motors you've built I think this is your master piece.
It’s really not that impressive though.
@@BC08 really? lol..
pannic11 1200 crank HP from a 260ci LS? No, it isn’t, IMHO. At all. It’s a 1000 rwhp turbo combo. I build 284ci Ford street engines that destroy this all of the time. I’m more impressed with the craftsmanship of his billet intake manifolds than anything, I’ve never seen a Nelson engine that impressed me on power output.
@@BC08 Your piece of shit ford motor could never perform like his. Give it up dumb fuck
@@BC08 Can you run it WOT, Under Full load for 5 minutes, or is it a 7 second wonder?
I wish you could be the engine builder for all GM applications
That's impressive you are doing pretty good if you can make 1200 hp for like 8 seconds and they are doing it for 5 min at a time
It was a real treat for me to see the MASTER at work. I certainly learned so much. THANK YOU.
You're my hero man. I thought of mirror image turbos as far back as the early 90s, but it was way over my head to pursue it, yet you made them happen. I O-ringed a fist gen Chevy smblk and had to scrap it because I couldn't get the heads to seal, but you're making that work with that killer block you got. I even used a kit by Bo Laws here in Orlando to add wrist-pin oilers because I've built an electrically-driven Novi-2000 centrifugal to boost mine with and here you've come up with your own wrist pin oilers too.
Way cool man. I love the way you just engineer to get what you want and that you have the means to get it done. To me, that's what it's all about. Those pistons and dry-sump are awesome. The only thing I'd try to do in addition is electrically drive and interlock it all which I know is a bit out of your field, but I'm sure it could be done. I'm big into PM DC and BLDC motors for that kind of thing. Save all the hp for the main-drive is my motto. Belts are a bummer. Anyway kudos on all you've done man because I really do think you do some outstanding work. I hope you never stop.
10/10 on engineering and design. Great work brother.
Fantastic job Tom. Now this is the kind of video I want to see.
awesome work tom, i just recently specced a 292 ci like this last month. glad to see a 262 .
This was freaking amazing wow wide-open for the period of time with loads on it and it looked ... just wow!
This team has put a lot of thought and skill into building that engine. My hats off to them.
And why would anyone skip 5 minutes of WOT ? Damn son!!!
Boat racers
Ikr!! Delayed my shower to watch this.lol
We once destroked a 2.3 ford 4 banger to 1.8. Turned 13,000 rpm and 400 H.P. This was in a Mini Modified car at New Smyrna Speedway back in the 90's. Ran 9 nights strait during speedweek. This reminds me of those old days. Thanks!
I'd like to see a video on that one someday. Sounds like a cool project
Taking some notes on Gas turbine engines lube systems even the lock wire. Love the engineering on that beast. The added thickness piston tops , huge pins and trick oil let’s for the bottom of the pistons . 100% great engineering!
The craftsmanship that went into building the motor is top notch.
PURE GENIUS SIR...THAT LITTLE GIANT OTTER REALLY SPIN!!!!!!!(I had to add a water critter...)
This is what I call a true work of art!
Awesome
Im a diesel mechanic of 30yrs nice to see you guys employing some old school diesel tech
You can push those pistons alot harder once you stabilize their temp with oil
Maybe compound turbos next
And multiple direct injection events per combustion cycle
Seems like that setup would be ideal for all kinds of endurance and other tortuous applications. Pretty dang cool!
Love the way your brain thinks brother
God bless
My lawnmower runs full throttle each time i use it so that means my lawnmower engine is like that nelson engine. Just kidding that was actually very impressive to say the least 👍
Yes mspider12 i know that like i said in my comment i was just kidding 👍
Governor
The people who commented on this cannot take a joke
@@sladesarosy7193 The people who commented would appreciate a joke if it made sense but they understand that small engines are run at a specified RPM with a governor...and knowing is half the battle, GI JOEEEEEEEE
@@TheCulnes I see u can also not take a joke and have no sense of humor
Nelson should build the new C8 engine.
It would have to be an extremely limited run. Look at the Hellcat. Not many people can handle 500hp. Much less a Grand.
Next chief engineer.
@@SGTJDerek there's money in it man, who cares if they can't handle the power? They will figure it out
Now theres a ringtone to wake up to.
He’s an engineer genius
You Guys are building some nice car and motor and it is built to last.Congratulations.You guys are thinking before starting any project.
I want to hang out with Mr. Nelson and absorb some of his engine building knowledge lol
Sure is nice to see a true professional. Meticulous. God bless
Can you squeeze that into my Acura NSX, PLEEZ!!! 😉
What a very nice guy too, nice clear explanations. Smart guy.
Im a LS fan but also a Chrysler fan. Lots of people shun the 287ci (4.7 HO). I'd love to see you put together a 4.7HO. Nobody is building 4.7s. If i had the resources id be all over it no doubt. Seeing a small block rip like this is too me, more thrilling than say a 632ci.
Simply impressive and genius!!!!!
That oil separator pump is something sweet. I even want one in my daily driver, let alone in my race motors !
Yeah copy that, would certainly protect the engine from oil pressure leanout due to the oil consistency and the viscosity without any air turbulence.
MECHANICAL PERFECTION 👍🔧🏁
394th 👍's up Tom thanks for taking the time for us
This should put the car engine in boat myth to rest once and for all!!! Hell yeah!!! Love it...I have to edit...I am amazed at the engineering behind this engine...Holy Sh*t...Awesome
Awesome job!
However, that plastic bag on the floor of the dyno room bugged the heck outta me. Thankfully whatever was in it was heavy enough to keep it from flying through the air. All I could imagine was it getting sucked into one of the turbos! LOL
That is so awesome 👍👍👍👍👍
Nice vid.
Going fast cost alot, i use to work at a machine shop. Some of the tricks here we use to use at our shop. We used tungsten wire back in the days instead of piano wire. I like the dry sump set up. It will be a good upgrade than the conventional one.
Cooling oil jets is the key , I did it on my tt viper engine designed for circuit racing .
Reminds me of when i was a kid in the 70's. My dad had a friend that ran NHRA prostock and my dad helped him out from time to time. Back then, there were not a lot of go-fast catelog parts. You had to make everything. My dad and he were aircraftmachinists. As i recall, they ran a 327 small block stroked way down...i have no idea - 260 or 270 something ci. Concreted heads, o-ringed deck, rocker and crank stud girdles. Dry sump pump. This application was all about high RPM horsepower. Had to run a magneto for the high revs. He ran it through a race prepped powerglide and outback was some outlandishly low geared rear-end. One shift at the 1/8 mile mark and it was RPMs to the 1/4 mile mark. Not sure where the RPMs capped-out at but dad said it was in the high 4 digit numbers. I was a boy then so i don't have real numbers. What i do remember was the freaking huge tunnel ram and header pipes the size of tennis balls. They were moving some serious air. So old school.
Blogposting
amazing tom
My diesel has piston cooling jets.Good thinkin.
Cooling the piston down that way is ingenious!
4.2L LS v8 BEAST
that endurance speaks volumes
In my opinion you can go to school and read a 1000 books but if you don't add pages to those books or invent something from the base knowledge that you gain from those books you're a thief. and you sir have given back with the knowledge that you have taken from books and experience you are a king a creator you have creativity flowing through your brain it's awesome keep up the good work intricate thinking good. meditate become more.
what a beast engine.
lol at the bag and aerosol can just coming into the picture 13:40
WOW! Can I borrow the motor this weekend?? Would ceramic coating the Pistons also keep it kooler on top too? The oil galley jets are they free floating or welded in some how... Also, I seen we're going with the lsx cast iron block. A great block..but what if on a aluminum block application? 🤔
I love this guy he is a FUCKING MAD SCIENTIST!! I wish I had the coin to have Mr. Nelson build an engine for me. Someday Ill have the jack it takes and Ill be knocking on his door!!
This is amazing
phenomenal ! although it is an older vid, would love to know how the boat and engine combination did. anyone know ?
Um...this is serious thermodynamics here. This guy deserves a Nobel Prize. He's getting 4.6 horsepower out of a single cubic inch of volume. Imagine a cube, one inch on a side (like one quarter the size of a Rubik's Cube ) producing 4.6 horsepower. That's almost like Star Trek stuff.
Dope as hell
Way back when, guys used to run the 283 because of the crank pin overlap between the main and rods. The other thing is that they had small journals, which allowed for more meat around the bolts and thicker walls on the mains when compared to a four bolt block. The distance between the outside edge of the main cap and the inside of the main journal is thicker than a four bolt 350 block, which gave it more strange hope. The rod ratio was better, the Pistons were lighter and all that added up to a motor that would rev like crazy, and make killer horsepower.
Sick video! Been a long time you guys made a video. Your 2000s videos are still up there. I must ask why is it surging? It is that you whaling on it? I think it's time you put aeronautical air inlet Deming on into consideration. It would benefit a lot. Lastly look at you footage again the air ram was expanding .Iggy need something more ridged. Keep wrenching and making bad ass engines.
Great motor Tom! How did the boat season go? Or did they get cancelled by the flu?
Not to shabby, see a lot of the same techniques that I use on my builds on this engine. That was a hell of a torture test though. I've never used that kind of exhaust valve though I would be concerned about that friction weld not being bonded correctly and dropping the head of the valve in.
thats the whole purpose of having it on the engine dyno. To find the weak links BEFORE its running 90+ mph down the water and costing the owner thousands...
Damn that’s painful to watch ,but excellent proof of concepts . I say concepts because of the innovations and quality of the parts and knowledge built into this engine . Gr8 job.
What I would like to see is this engine in one of those wind tunnel things where they test aerodynamics were they put smoke and see how this engines sucks in air.
A lot of these things can be implemented on other engines too, not just the LS, or a Chevy for that matter, Ford and Dodge, and imports, of all sizes and types could use some or all these tricks.
I've also seen a few tricks import guys use like coatings that we V8 guys could use, we don't need oil sicking to the side of a block where we don't need oil to lube or cool down...
You guys have this sorted.... I'm a Welder , I know Inconel....
Love it
wow awsome
Giving me ideas for my f223 formula thunderbird.
Great vid BJT & NRE.
What is the size at the camshaft how lift intake & excaust ??????pleace❓❗
This Engine Is So Super Dope tho!!!!
CAN I GET A WITNESS!!!???!!!???
Junkyard 4.8 LS 898 HP at rear wheels on 15lbs boost made over 1100 at 22lbs , was done on car build off show.
Very cool, would probably have trouble staying at full throttle max rpm for 5 min though
It has been done bunch of times, even with cheap ebay turbos. But they are dyno queens and won't last a race season.
The sound was fucking hypnotic!!!
I want one for my 06 GTO!
I'm guessing most people don't know the advantage of a high rod to stroke ratio. Smokey Yunick did...
Yep, Smokey is the reason for almost the entire NASCAR rule book! Lol!!!
If I remember correctly Allis Chalmers produced a V-8 diesel heavy haul truck engine that tore up their competition but they self destructed because they foamed their oil. Your idea to de-aerate the oil in your dry sump system is a very wise decision and I’m sure that there were some engineers at AC that wished that they had done so.
What was the bore size, I apparently missed it. Also, can you also get me speeling on those exhaust valves
Im toyota guy but i got a soft spot. For the ls engine even early version of this engune did suffer froms spun rods but this engine is great once you put custom engineers part like tbick piston rods thicker piston crown better oil squirt
what are you using for head gaskets tom?
Awesome, I always said, it you want it stronger make it thicker! Mechanic 35 years....
Awesome
Why does it have water jacketed exhaust? Was the displacement chosen for rules purposes or to get a stronger crank and less piston side load? Thanks for sharing some of the build details!
Marine engine
Bad ass!!
Do you have a part number for the crankshaft so I can order one I want to try that same crank with a 3.9 inch bore for road racing
Call callies, expect a wait and prepare your wallet
I wish I could get my car sponsored!!!
Nice build but I would use king racing bearings they look like the day you put them in after years of racing.. just a tip from alot of experience.
the old saying was, "there's no substitute for cubic inches" except when boosted to hell? Lol shit my little (250cid) 4Ltr quad cam quad valve v8 spins over 9600 on 30+psi an its real nice seeing someone else prove the point too
I know what build I'm going with for my 1972 Buick centurion convertible now🤭🔥🔥
Never seen aluminum pistons glow red. But I understand what he was trying to explain
Does anyone know what a build like this costs?
Scroll to 15:20 for end results? Listening to this thing is sick! I wouldn’t want to miss it.
Imagine this in a street car? 4.2L, no one would suspect that power. lol. I vote for a Miata Swap. 😂
Yeah engine still there Miata chassis looks like a pretzel 😂.
would not applicable lol... it only makes the power it does due to rpm , which means that small of cubic inch it needs alot of love separation angle because you cannot stuff that much pressure in to a small cylinder at low rpm due to turbo pressure is low at low rpm, now add to that tire rotaional rpm to gear ratio to torque converter multiplication rate.... look at how much it cost just for a true tranny to handle that level of power constantly....
the oil squirt on piston underside is nothing knew at all... notice he used a thick height piston to absorb the heat generated from compressed pressure of boost,bhe used a big heavy rod because you need more weight to handle the high rpm, it's .5 longer than even the best ls sbc rod and probably 2xs heavier
you would need a very steep rear end gear to keep it in its proper band per the valvtrain event timing, and where the fuk you gonna be hitting 9k rpms in ever shift lol ahahaha...
Accent
I realize in an application like this/ marine your gonna want to tune AFR to keep the EGT's under a certain number (looks like 1400 F). Im wondering what AFR it took to keep your EGT's under that number.
The replacement for displacement is boost
negative
@@PhilFaun ghost rider
The replacement for displacement is rpm.
Lol. You get something like 3% gain per CI added if you're good vs something like 7% gain per PSI of boost. Want to make big power build for boost.
@@brettgast Anything you do to a smaller displacement motor will be exponentially more-so in a larger displacement motor. It's simple science. You can physically compress and combust more air and fuel the more displacement you have.
You can't ignore basic science just because you have size envy lol.
10 psi on a 454 motor will have more power potential than 10 psi on a 350.
Old school terminology/slang, "that thing is pretty trick".."its f@#$n cherry man". Hahah
And That's the sound of shitting your pants and being stuck to the dash like a cat who's just gone on its first car ride
Looks like you guys have som ”overload” on your sparwires at high revs! You can see that there the wires are joining above the intake.
Cool build though! Tough little eng to withstand 7000+rpm for 5min!👍
Lol shut up
How did this setup hold up?
Helped me
Good Lord! #awesome
scroll to 15:20 for end results.. NO SIR!!!
I hear you i watched the whole dam thing!!!!!🤘🤘🤘
What kind of boost pressures does it take to make this kind of hp/ci?
oil squirters are a very good idea since you designed the piston your self why didnt you create internal oil gallerys inside the piston. I think it was first showcased by porsche or mahle and the piston was for a flat 6 turbo.