Chrysler Master Tech - 1951, Volume 4-8 FirePower Engine Facts Chrysler is a registered trademark of Chrysler LLC. Master Tech series training manuals and videos are the property of Chrysler LLC. MyMopar.com
I have been a professional mechanic going on 38 years. Needless to say I have seen a lot of changes, especially in the last ten years. I have managed to keep up with those changes while remembering the basic fundamentals of a gasoline powered car hasn't changed much since it was developed. The internal combustion engine still needs the same four cycles to operate. Whether the engine has breaker points or nine on-board computers, without those four cycles, the engine won't run. That being said, this video is as relevant today as it was 70 years ago. A lay person with little or no understanding of an internal combustion engine could gain some useful knowledge from watching this video. How does a spark plug work? What is a valve? What does a piston do? Where does the crankshaft go? The information you and I take for granted is easily understood in this video.
My first car was my mom's hand me down 1958 imperial two-door coupe with a 392 in it. That 392 moved that big heavy car along pretty good. It was big power for back in the day
Tech sounds like a Tom and Jerry character lol, and Dan definitely sounds like Larry from The Three Stooges. LOL I love these old videos and it's cool to see how things where made back then. These folks absolutely earned every single penny in that paycheck.
That one guy sounds like my great grandma when i last saw her in the hospital. Her last words to me were "go to Walgreens and get me a carton of Marlboro". When i came back, she died from Emphysema.
The Prius is a great car, it is 100x more comfortable than a muscle car 100x better gas mileage, 100x safety, 100x quieter, 100x more practical, more seats and cargo space AC and better heat.
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Interesting how they insist on pre loading lifters. Many other companies say not to do that. I’ve personally see where a hydraulic lifter was too loaded cashing the valve to float
Tech smokes pretty heavy doesn't he. LOL!! I love these tech films. Watched many of them doing mechanic work. Diesel engine and gas engine and heavy Equipment.
AWESOME! Not much videos out there for the 1952 Firepower. Appreciate it. I love the original vintage video. :) Thanks, and if anyone can add videos of a 1951 firepower and tips to maintain would be appreciated. I'll need to try and make some videos for others out there.
I watch these earlier 'Tech' narrated films and have to try and not think of Looney Tunes' characters while I watch. That's right, this particular Tech was voiced by none other than Mel Blanc!
Today on Legacy ChryslerTech..we cleaned up crancase n changed oil in the 318 v-8 shop truck(Ramcharger)...next is part 5 of a re-haab for a 1993 LeBaron 2.5L Convertable unit- R&R cv shafts n axle seals- trans fltr n.new fluid. Happy Motoring!..
owned one of these dodges with the gyromatic transmission it was slow you had to step on the clutch for the transmission could shift up to a higher gear.i gave it away to my friend for nothing and bought a mercury. jim
The '51 Chrysler, Plimouth and DeSoto cars I've seen here on Brazil when I was only 8 years old - I am 64 now - are all on block mounted valves and plain heads, if it was Ohc were only for north america' consumers...
It goes both ways...you can/could still vw beetles and Toyota hi lux trucks....but not us here in USA....which has been taken over by communists...maybe we'll get ladas.
Pity they never spaced them evenly- close to the cylinder walls but big gap in between. The valves in a 265 Hemi (Aussie six) all but touch each other, 1.96" inlet and 1.5"exh. The 265 shares bore size of the 318 V8.
Regular gas then was 100 octane. Premium was at 110.Flying A was 114 octane, with the good stuff and lot of pollution. Oil wasn't that great.29.9cents premium gal.Same refinery then as now.Same plumbing, different price today.
Don't get no better than a Hemi,I raced an old Chrysler in the seventies and I was in a 55 Ford that was a one owner and it would run for what it was but,I couldn't do nothing with the Hemi!!!!!!!!
That, and the fact that oil to the rocker shafts was intermittent, easily fixed by grinding a groove in the center cam journal, or using a later camshaft with a grooved journal.
I am about to rebuild an old 392 hemi in my old 59 tow truck. What is interesting is that modern "hemi" engines are not hemispherical heads, they are oval in shape with a plug on each side of the chamber. The modern hemi is only a trademark name. You can get a real hemi from harbor freight. Lol
Looking at this engine, it also isn't a half sphere, so not a true hemi either. The last true hemi was probably in the thirties when comp ratios were more like 4 or 5 to 1.
I don’t recall that they ever claimed the chambers were hemispherical at the cylinder bore diameter. Rather, they were accurately called “hemispherical segment” chambers, whose radii were much larger. They were segments of half-spheres much bigger than the bore diameter. Regardless of the precise shape, the point was to allow room for bigger valves and to center the spark plug in a relatively symmetrical and smoothly contoured chamber to initiate the flame front in the center, ostensibly burning the mixture more quickly than lighting the fire at one edge.
The modern Hemi would have to have a 7 - 1 compression ratio if it didn't have those squish areas, and with that little compression, scores of people would refuse to buy it, despite the fact that it wouldn't require EGR.
@B. Rippy I think he simply means that low octane fuel requires a low compression ratio. Around 1980 they stopped selling premium. My dad had a 69 Chevrolet with a 427 v8. It wasn't a high performance model but had probably 10.5:1. And it would knock with regular, unless he drove it in lower gears.
octane was rated different in the old days using RON! WE NOW USE MON+RON/2 = PUMP OCTANE THAT IS 8-10 POINTS LOWER. MODERN PREMIUM IN THE SOUTH IS 93 THAT WOULD 101-103 IN THE OLD RON RATING. SO THE NEW GAS IS ABOUT WARE THE OLD PREMIUM WAS. OLD PREMIUM WAS AROUND 107 IN THE 60S THAT WOULD A 95 TO DAY. and one can run a 10:1 compression engine on 87! i have a 302 with 289 heads and flat top pistons and 0 deck that makes for 10:1 or more depending on yer of 289 heads. the reason it works is light weight vehicle with a 4 speed and 4.10:1 or better gears in the diff. all so a 289 solid lifter cam helps bleed down the hi presser helps. i all so run a 160f thermostat. i run it on 89 to be safe thow. gas in 1951 was worse than today!
In 1956 those heads made 350 h.p. on performance eng. No others did this and in 1957 it made 4oo h.p. !!!. Dont be in denial!!! 70 year's of top fuel DONATION!!!
Oil was horrible then, even 70s oil was garbage compared to today's oil, EXCEPT that it had zinc in it. Today's wonder engines would probably only last about 60,000 miles on yesteryear's oils.
one of the best. I have owned a few, and one had 400,000 miles on it. One was in a 1971 Satellite Sebring Plus, 1974 Plymouth Duster, and 1970 Dodge Coronet, and also a 1999 Durango
The Firepower engine is short and compact... " Compared to what? ha ha. I've had two 354's and a pair of 331's. Neither series could be described as compact.
I don't get the purpose of the rocker shafts on Mopar engines. Seems to me if you are going to use shafts you may as well design a over head cam and improve valve train control.
but if they ran the cam down the center of the head where would you put the spark plugs? The Hemi was a great engine but the larger head size, increased complexity and extra rocker shafts put it at a price disadvantage and because of their smaller volume Chrysler had to watch the pennies to remain competitive with GM and to some extent with Ford
The rockers being mounted on shafts provides better valve-train performance at high RPM and makes the whole valve-train more stable.You don't have the issue of valve float with the rockers on shafts as opposed to studs like other V-8 designs.
@@fk4515 This is one reason why the polysphere engine was invented. It had much of the cross flow effect of the Hemi, but used one rocker shaft per head. In addition, they didn't have to route the spark plug wires through the valve cover, further reducing the price. Also, the combustion chambers were as-cast, which was another cost saving measure. I sometimes wonder what would have happened of the polysphere designed continued on the LA engine.
BUT, if they would use 7.5 : 1 today, they would not have to use EGR, they would not have to use retarded ignition timing, and they would be able to use a richer air-fuel ratio.
Now we know better, those Chrysler, Dodge and DeSoto V8's were Hemi's. I mean, they did say "hemispherical" at 1:38 in the video, so they knew as well. Just didn't market the term heavily until the mid 60s.
Imam Obama's action hero Pedophile Mohammed insulted and cursed black people, calling Ethiopians raisin heads and saying the devil looks like a black man. Pedophile Mohammed married his favorite sex toy slave Aisha when she was six. The Klan did many evils to black people, Islam has murdered and enslaved millions of Africans. Just saying.
@@waterheaterservices And Biden who today sanctimoniously as well as hypocritically gas-lights the country about "white" "supremacy", was mentored in his own words by a former Grand wizard of the klu Klux klan! The late Democrat senator Robert Byrd, whom Biden was close enough to give the eulogy for, you can still find it on RU-vid.
This is definitely mostly advertisement but at the same time it teaches you about engines anyways. It tells the layman "here's how engines work, that's why ours is better" instead of saying "Firepower. No substitutions." And relying on brand recognition. "High compression ratio of 7.5:1" what a different time
