Heavily tuned Fiat 128 SOHC Race Engine First Start

This engine will power a vintage Fiat 128 race car that should definitely be capable of holding its ground in the italian historic racing championship.
The glorious FIAT SOHC engine powered a host of cars over the years like the Fiat 128, Regata, Ritmo, Punto mk1, Uno, Tipo, Tempra, X1/9 etc. Add some kugelfischer style mechanical injection, slide throttles and the sound becomes rather interesting! Too bad they didn't rev it all the way to its 10k rpm redline.
We now have some crappy merchandise available: www.redbubble....
Music Credits:
Controlled Chaos Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
creativecommons...

[@Integrale2472]

this engine builders are genius , listen the clear sound and the response on the throttle amazing work

[@TheDementedMonkeys]

Thank you! I'll gladly pass the compliment on to them :)

[@Slaydur]

Those lampredi sohc’s are dope. I’m building a 1300 with 11.7:1 CR, kugelfischer, 290 or 316 cam with 11.2mm lift, and some lightening. My x1/9 is probably gonna catch on fire, but it don’t matter if it sounds like an f1 engine behind my head

[@andrefixa]

In family we have a fiat 128 with a 1100cc SOHC engine, It has so much torque!

[@Slaydur]

@@andrefixa they’re small, but have way more torque than bike swaps most the time. I’d love to get a Dallara 16v head one day are really make it breathe

[@andrefixa]

@@Slaydur they are really compact engines, very reliable and they dont consume a lot!

[@user-wn9pk2be7k]

​@@andrefixaдумаю что 1.5 л двигатель SOCH 75 л.с один из самых лучших в линейке моторов Лампреди. хотелось бы узнать ставился ли такой двигатель на модели Лянча? спасибо

[@andrefixa]

Я не русский поэтому пользуюсь переводчиком от гугла, я просто фанат фиата 128 и мне 15 лет, не знаю устанавливался ли он на ланчии.

[@Espedals]

I could listen to this all day, beautiful.

[@TheDementedMonkeys]

Glad you enjoy it!

[@Mish93Will]

Lovely motor, revs super clean and sounds strong!

[@Edu_RJR]

that looks very flammable

[@mk6315]

If its not capable of killing you its not as fun

[@Jonathan_Doe_]

Plenty of Ducati’s run shower injectors like this, it’s totally safe as long as there’s an enclosed air box or plenum around it, and even with it out in the open, as long as the engines running pretty much all the fuel vapours getting pulled straight in so it’s not quite as dangerous as it looks.

[@djmystery7235]

Eduardo J it do

[@palebluedot285]

Here let me light up your ciggar

[@thebiggsfix6987]

Hope that thing dosent back fire

[@TrustNotta]

That fuel rail/nozzle setup is really cool. Never seen that before. 👍🏼👍🏼

[@Alex-xl4xe]

It looks cool in this version but in reality, when pushing the pedal (or whatever they had here) you can see quite some fuel escaping into the atmosphere.

[@lordofrims]

I've seen it in a F1 engine test by Renault.

[@tamer27antepli]

Haha imagine the smell

[@lordofrims]

Here is the Renault F1 test with clear sight of the injectors kzbin.info/www/bejne/b5y7aZSpodqohMk

[@skidmark7119]

Guy on right looks like he is holding in a turd!

[@herrgolf]

That actually sounds very nice. Not horribly loud or lope-y, but a nice smooth rasp.

[@TheDementedMonkeys]

Thank you! Keep in mind that it was kept below 4k rpm in the video. At 10k it's as loud and obnoxious as any other race engine :)

[@battikhy199]

A Turkish car (Tofaş Şahin) was powered by the 1.4 and 1.6 liter versions of this engine as well, actually, I drive one with the 1.4 liter version.

[@TheDementedMonkeys]

Cool! A similar engine was also used in some russian cars :)

[@WymiataczPlays]

Looks super clean! But at 0:50 - injector (3) isnt spraying properly like the others or is it just me?

[@TheDementedMonkeys]

You have sharp eyes!

[@Owuryn]

I thought the same.

[@clotm4a1]

yup

[@sup3rbird]

Yeah, first thing I noticed. No 3 isn't atomising as well as the others.

[@siclt1]

I was just about to say this

[@v8purple]

this is what i call art. the kugelfischer injection system look very dangerous, wasting fuel.but with some modification like puting some custom air filter.i think the engine is ready for an action

[@arturostasi1461]

Favoloso !!!!! Averlo avuto sulla mia 128 a 19 anni.....

[@LeDibeau]

ya squirt the juice directly into the wide open throat - how naughty is that? The beautifullest injection construction I ever saw!

[@dannyb20vtec28]

That header looks sick

[@TaketotheRoad]

Better than eating fresh pasta and drinking fine red wine! This would fit very nicely in our x1/9 ;)

[@TheDementedMonkeys]

Accidental poetry! Better than eating pasta and drinking red wine this would fit nicely in our fiat x1\9!

[@phoghat]

no it's not. good, but not that good

[@peterfitzpatrick7032]

Had an X1/9 in my youth .... loved it !! With the pop-up h/lights & the removable hardtop it was magical & quite the eye-catcher at the time !! 👍😎☘

[@Brian_2JZ]

Thats interesting fuel injection system

[@MrDavidelliottjr]

That's a cool lil motor. Love to see it running in something.

[@racingwithbrad]

That motor sound fucking gorgeous!

[@gothicpagan.666]

Lovley little machining details like the ink. rail and alt. bracket. Needs to have load on it though

[@iblesbosuok]

what happen with 3rd injector? cheers from Indonesia

[@TheDementedMonkeys]

It probably needed to be cleaned :)

[@MM-of1vf]

I must admit that sound from this engine killing me !

[@martinseliga933]

pure amazing clear sound

[@marceloabreu669]

Que Maravilha... um belíssimo trabalho... linda sinfonia em marcha lenta 👏👏👏 parabéns

[@user-jt9qm1hk1z]

Di che strumento musicale si tratta....????..... grande maestro MITTIGA....!!!👉💯🏁

[@tazor4562]

im really late heres a joke looks like snakes flicking their nom nom seekers

[@TheZzzzzzzz]

they didn't rev it to its 10k red line without a load because doing that is stupid

[@huntergman8338]

But it would be awesome.

[@africanelectron751]

Holy fuck someone who understands!!!!

[@RabeaHussain]

engine needs Cum?

[@jhndijkman]

No problem with revs, I had a mostly standard head a blocked 128 SL coupe. Pretty little coupe. I took it to 8000 to 8500 RPM frequently. Cant kill them with a stick. But the standard will elongate valves eventually. they stretch with the constant high revs.

[@munkeemunks]

that shower setting looks awesome!

[@MsAdriandel]

Lo mas increible es que acelere y el tacometro no se mueva jajajaja

[@honkhonk6443]

sounds sharp, great job guys

[@jorgepinto3372]

Que locura x Dios!! Pase más info o link para saber más de ese sistema!! Lo felicito 👏👏

[@Loscala1995]

Estuve averiguando sobre ese sistema de inyección y es raro y bastante indocumentado (más para hispanohablantes como nosotros) Si gustás en investigar acerca de este sistema de inyección, se llama "kugelfischer pump" Suerte!

[@MrIngorodrigues]

This injectors are like "gicles" (jets)? Whats control the pulse? A "master" injector ?

[@TheDementedMonkeys]

I reckon the kugelfischer runs on a mechanical fuel pump that also works as a fuel distributor but i may be wrong :)

[@OpenRoader]

Sounds so smooth

[@zjuan1921]

Muy lindo trabajo. Saludos de Uruguay donde se puede ver mas ?

[@ianwilliams487]

Hmmmm,,,, don't know much about the SOHC engine,,but with that much inlet manifold i'd be using the DOHC engine,1800 i had was alright in a light car,,mind mine was the older design with the dizzie driven by aux shaft,,like the Datsun 1600 engine had to time oil pump to set up dizzie,,still don't know why aux shaft had to be set at 37 1/2 degs of top dead centre,, and i agree,,with the rest of them No 3 is looking lean,,,,

[@nickstevenson7291]

How are the intake air temps with the header basically touching the ITB’s

[@TheDementedMonkeys]

This type of engine flows enough air to make the exhaust location a non-issue.

[@Briganteee]

C'è L'ho duro dal bel suono. Wow complimenti bel motore, fluidissimo.

[@pole69ers]

Haha the guy to the right looks so constipated.

[@brianpichelman182]

Amazing work! I notice it isn't a crossflow head- is that a constraint of the racing regulations?

[@TheDementedMonkeys]

Yup. Damn rulebooks. It's also impossible to adopt a crossflow configuration on a oem head and having a custom head built from scratch requires too much money and effort... at that point it becomes cheaper to adapt a different 16v, dohc head from fiat :)

[@luisrizzo979]

Hermosooooo.... muestren mas de ese motor... saludos desde argetina

[@admlucius7298]

Poronguero...con todos los B18 y 2JZ que hay en you tube venis a ver esta verga! jajajajajajajajaaj

[@estoy.quieto]

Adm -HF bien que vos tambien lo viniste a ver pelotudo

[@admlucius7298]

xYUNGSLIDERx Sl mas vale...para confirmar la garlompa que es 😂😂

[@Giova590]

Adm -HF No hay comparación entre un motor aspirado con VTEC y un motor rudimentario pensado para la calle como el del 128

[@lautarobarzola1019]

@@admlucius7298 y vos en que andas ???

[@nuclearwinter21]

Oddly satisfying... :3 👍

[@zachutson7205]

Never seen injectors done like that

[@frigglebiscuit7484]

always wondered why people dont put the injectors above the throttle blades on injected engines more often. atomizes and cools fuel amazingly well.

[@TheDementedMonkeys]

Fire hazards, puddling when travelling at constant part throttle, more fire hazards etc :)

[@oldschool8432]

Question why put the injectors there? Wouldn't be better has direct port? I mean that looks cool

[@TheDementedMonkeys]

That was the best possible system back then and vintage racers have to adhere to certain rules that mandate period correct parts.

[@3232ins]

How much Horsepower/cavallo/ps?

[@hoost3056]

That engine sounds so good! Do you have specs?

[@TheDementedMonkeys]

I wrote them somewhere in the comments. I went NC with these tuners after they botched 2 jobs one after the other leaving me without cars for years.

[@user-rs1cu5wj1s]

Explain long air inlet, please.

[@TheDementedMonkeys]

Intake length affects the powerband\tq curve.

[@neillee5835]

Looks so cool

[@wickiezulu]

Using the 85-90 hp 1600 SOHC motors as points of reference, how easily can they be fettled in road-going spec to match the 105-108 hp 1600 Twin-Cam engines used in the Ritmo/Strada 105TC and Delta 1.6 GT? Would 100-110 hp for a 1600 SOHC be a realistic target?

[@TheDementedMonkeys]

It's not too hard and should actually require only minor tuning and some decent parts ;)

[@josesilva-lz6fz]

Saludos desde ecuador q hermoso motor los felicito xfas muestren mas selo pido bendiciones

[@vtec_c1loop844]

Im from Brazil and our neighbours at argentina are experts at tuning these sohc fiats to honda power levels, when im 18 i plan to build a fiat uno making 130whp and i have one question, is this engine the "sevel" 1.6 engine?

[@TheDementedMonkeys]

First of all i wish you the best of luck with your first engine build! To answer your question: no, this is a SOHC 1.6 engine from a fiat 128. I'd say it's the great grandfather of the sevel engine :)

[@juanchodalesio]

Me parece que a la par de uno de acá ( argentina) se queda corto ese motor...

[@diegosinner]

¿Vos crees que lo van a llevar al limitador como hacen todos los "vivos" de acá? No lo esta acelerando ni un poco.

[@juanchodalesio]

@@diegosinner a lo que voy es que acá lo llevan a mucho más a esos motores...en preparación.

[@manumaddalenatd3223]

Pensa que probablemente sea para correr en alguna categoria, tienen limitaciones para preparar el motor y muy probablemente busquen tener confiabilidad

[@lordofrims]

No es un motor de picadas, claramente debe ser se circuito.

[@rallyivan1234]

@@lordofrims o de rally

[@CorreteandolaCheve]

having the injectors exposed tat way incresse perfomrance?... are the injectors stand on the open or under the hood?

[@TheDementedMonkeys]

Putting the injectors on top of the velocity stacks improves the fuel's spray pattern. They are still kept under the hood and, fire risks aside, provide that little extra "omph" when compared to engines that have the injectors on the side! There's an old video of a renault f1 engine sporting a similar configuration: kzbin.info/www/bejne/r2PMc5WtpMiMkNk

[@MrHBSoftware]

have you ever driven or raced a car with 2x dual 50mm webers and a very lumpy camshaft with big overlap??? the amount of fuel spilled is way way way way bigger than with this especially at idle

[@zelashizzz1278]

@@MrHBSoftware I have an 89 Honda Accord with dual 45 Webers on it and can attest to that statement lol

[@215alessio]

I subbed, nice vid! I like fiat engines

[@antoninorusso8961]

spettacolare.

[@TheDementedMonkeys]

Grazie!

[@axeman6560]

Wow how cool is that, that motor was originally carburetered? I love it .

[@TheDementedMonkeys]

Indeed it was!

[@Manuqtix.Manuqtix]

It gets its fuel in a strange way

[@nerome619]

mechanical fuel injection!

[@tanveermoto8814]

nice video

[@ESSA028]

Good for teaching

[@TSAR-2023]

It's speaking with motor lovers!

[@goosebee]

How's the Kugelfischer system on turbo cars?

[@TheDementedMonkeys]

the bmw 2002 turbo used it. It worked just fine!

[@goosebee]

@@TheDementedMonkeys thanks!

[@gabrielgomes9710]

Acho que esse motor é o mesmo que a FPT Brasil usa atualmente, FIRE!

[@G.Suzuman]

This is not the engine called FIRE, it's called Tipo from the 90's. Fire was from the 2000's, and now is the engines called FIREFLY.

[@gabrielgomes9710]

@@G.Suzuman Yes, name in Brazil is SEVEL argentino

[@sepic114]

Hi a see your another video were I see yours Fiat 128 with over fenders. My question is do you have for sell those overs fenders. Thanks

[@TheDementedMonkeys]

They are selling them on their website. I ended my relationship with this shop after too many mishaps that delayed an engine rebuild and had me lose an entire season.

[@gemizu4874]

I love it when fuel sprays on my exhaust manifold. But serious this thing is fucking mental just hope its safe aha

[@MrHBSoftware]

Spray pattern is not correct on one of the injectors! what type of injection is this?kugelfischer?

[@TheDementedMonkeys]

It's a Kugelfischer injection system. 100% mechanical. One injector was in need of a rebuild :)

[@Pereke69]

It looks really good, 295º camshaft? have you dynoed it? never tried with a so long header, and just a thought you are having too much oil pressure commonly happens when the aux camshaft its too tight, hope you polished the oil pressure relief valve, anyway it looks really good, congratulations hope you upload more videos, greetings from argentina

[@TheDementedMonkeys]

Hello! I'm sorry I cannot give you any more information on the engine. Unfortunately i cut my ties with the tuners in questions after they were unable to deliver on their promises as far as my engines and cars were concerned.

[@billwelter4101]

Just curious, why are you guys using mechanical FI instead of electronic? Since the injector is spraying down the stack, and butterflies may be closed or partially open, does that cause AF ratio problems? Looks and sounds great!

[@TheDementedMonkeys]

historic and vintage car racing competitions have some restrictions. Engine wise it's usually only possible to use systems that were available at the time.

[@bertone6996]

Che bella musica .

[@o.pereira7443]

Great Soud !!!

[@alifiandefender6480]

Unique fuel injected engine !!

[@jompazx1272]

that 4-1 manifold looks kinda funky why are the split like that? 4 in row instead of 4 in a square?

[@TheDementedMonkeys]

Space constraints. It's a transverse engine installed on a FWD car.

[@tmk5522]

How is a first start already heavily tuned? Highly modified yes, but wouldn’t you just be getting started on tuning?

[@TheDementedMonkeys]

semantics, semantics, semantics! You're right though :)

[@rajkiranthomas3579]

Whats that thing spraying??? Is it open compustion???

[@jompazx1272]

and whant kind of injectors are thoes?

[@DMNelson32]

sounds awesome 👍

[@motorsportstuff5239]

I think that the 3rd injector doesn't spray as wide as the rest...

[@hernanmendoza5930]

que lindo que suena , muestren un poco mas del motor

[@zarkojekic4561]

How much horse power?

[@TheDementedMonkeys]

around 150hp\l

[@patrickradcliffe3837]

Losing fuel out of the stacks off throttle. Pretty lumpy fuel coming out of the injectors too. Should be a screamer once you get it all sorted with the valves.

[@thevinstigator2511]

Always thought intake injection looked cool, portal soundtrack.

[@itrstt66]

How do you tune The mixture and The injector Pump?

[@TheDementedMonkeys]

lots of little screws and a bit of wizardry.

[@itrstt66]

@@TheDementedMonkeys come on it was a serious question from a really frustated enumerous research atempts... there is very little information on mechanical injection.

[@TheDementedMonkeys]

@@itrstt66 Sorry if I sounded like i was making fun of you but that's actually true. On a mechanical fuel injection system you generally act on fuel pressure, relief valves, injector size and spray pattern, fuel volume etc through a bunch of screw and by mix and matching more or less custom made parts until you achieve an acceptable result. It's part tech and part black magic!

[@itrstt66]

​@@TheDementedMonkeys allright, i can see you are aocking demon... no worries didnt take it personally. thank you by the way for the clarifying answer. i can understand its "science" it is kind of like tunning in a carb by the feeling of it. and if so as well as it is, ther must be a certain doctrine or base procedure for mechanical injection tunning. could you share it please i have been trying to get that and it is really demanding to find a good article on that even more someone with experience. like for carb on needs get it to spec, then pre tunning the choke and idles screws, then tunning it cold fast idle, tunning it hot mixture to max possible vaccum and base idling and tunning it cold again check it on hot and readjust if needed, i understand this would be a general universal base procedure for a carb. What do you consider to be the same counterpart as to mechanical injection? grateful in advance

[@TheDementedMonkeys]

@@itrstt66 To be honest with you I don't think there's a standard procedure. On a kugelfischer system you can act on fuel pressure and flow for the most part by taking advantage of some minor "built-in" adjustability or replacing the parts with custom made ones. Other mechanical systems are much simpler and act just like a carb would, with positive, mechanically provided pressure instead of vacuum dependent fuelling. The best way to learn how to tune a system is to find a workshop manual for it and see how the manufacturer devised its adjustments. I'm not sure about kugelfischer set-ups but the internet is full of pdfs for the insanely weird and yet amazing k-jetronic electro-mechanical injection systems :)

[@adelkheir]

Hi. I was wondering if you can help me in tuning my own sohc engine in a Tempra. I want to install a stroker kit to increase displacement to 1.9 from 1.6 as well as add a higher flowing head, larger intake valves and a sporty cam while retaining its orginal carburettor and daily drivabillity. I hope to at least make twice the stock power (originally its 86 hp so maybe 172 ?) or possibly even hit 200 hp with good quality headers. What is your opinion on such a setup or what advice you can give me on the sohc ? Thanks in advance.

[@TheDementedMonkeys]

I could probably build it for you :) However forget about reaching 200hp on a 1.9l 8v engine without extensive modifications that would kill its driveability and with a stock carburettor. 150hp sounds like a more realistic goal :) However i'd probably look into swapping some more modern engine with a decent ECU. Carbs suck!

[@tolinanelda2448]

Beautiful! I was at your home page and wondered what tunes and cost can be done to an engine for road use? Key would be itb and at least 100-130 hp. But I couldn't find any info. I would to know an estimate. Btw we love to see a clip of a car in action with your engine mods. Cheers!

[@TheDementedMonkeys]

100-130hp can be achieved for roughly 5-6k :)

[@tolinanelda2448]

@@TheDementedMonkeys thank you for the quick reply! Alright that includes for the parts and work/labour? Cheers!

[@TheDementedMonkeys]

@@tolinanelda2448 depending where you live, yes!

[@DarianWallace]

Was hoping you'd go full throttle

[@maxthedog8483]

the injector on cyl #2 seems clogged a little

[@Leigonoassunto772]

Que ronco mais gostoso de ouvir ,é esse saindo do escapamento.

[@no-speedlimit]

Ganzo!

[@TheSol115]

inyector 3 tapado?

[@daniellago2013]

Gustavo D en realidad es el 2do que no pulberiza igual que los otros

[@joelfrancisconi2614]

Se cuenta desde la distribución hacia atrás

[@ibexnegro]

Pregunta aue inyectores son???

[@pluk60]

En inyección mecanica

[@ibexnegro]

Como el diesel???

[@corydixon65]

Injectors are interesting? Theres no electrical harness on them? Also, intake and exhaust ports are on the same side of the head? Probably lost some performance there.

[@TheDementedMonkeys]

Mechanical injection!

[@corriejacobs5876]

Brilliant car

[@loendsti]

sounds sweet

[@victoralo9782]

amazing this job

[@christeari9670]

(¬‿¬) thats 4barrel 🐝 freeflow 😁 so tight

[@Camelfacekamala]

So what... it puts out about 74 hp at the crank now? Are these guys Canadian?

[@TheDementedMonkeys]

lol

[@alilaleci6509]

Engine setup?

[@TheDementedMonkeys]

I'm sorry but i went nc with the mechanics involved in the build, I honestly cannot remember.

[@alejobenitez5786]

que tipo de inyectores son?

[@TheDementedMonkeys]

Kugelfischer

[@MrRaunui]

How are the injectors excited ? I see no electrical connection ?

[@tomassosaoconnor]

They are mechanically turned on by the fuel pressure itself. It works the same way as a diesel injection system, but without being direct injection

[@frankthespank]

0:55 Why is the guy on the right making that face?!

[@fred8261]

Hi there, may I know What exactly was tuned?

[@TheDementedMonkeys]

everything, basically.

[@fred8261]

@@TheDementedMonkeys Ok thx

[@sirreppik1430]

An engine from a 1993-1995 Fiat Punto GT MKI with the block code 176.A4.000 made 136bhp. How much does this one make?

[@TheDementedMonkeys]

an extra 80 or 100 hp, depending on its configuration.

[@MrHBSoftware]

punto gt is EFI and turbocharged, you are comparing apples with potatoes

[@tirsonacholibre5586]

just 128 for all of that mod ?