Porsche 917

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Porsche 917

Uploaded by: lovegt40
Video Description:
Incredible video of the greatest Porsche of every time. Dedicated to Graham, Fran and all the www.gt40s.com :)

Tags for this video: 917 gulf lemans Porsche

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but i think peugeot ... ( 3 months ago by FezZzo)

but i think peugeot is breaking it right now. i'm watchin it... :)

damn that is a ... ( 3 months ago by alexridesbmx)

damn that is a beatiful car

I wish he would ... ( 3 months ago by sasunarulover12345)

I wish he would shut da hell up so I could hear those two glued together 911 engines sing. I did hear that beautiful whin though. He's worse than a chatty talky DJ!

Flat 12 needs to ... ( 3 months ago by desidon777)

Flat 12 needs to make a comeback in some street cars today.

LOL ( 2 months ago by desidon777)

LOL

I heard in a TV ... ( 2 months ago by Barkuti)

I heard in a TV documentary that the first versions of this car lacked proper aerodinamic drag, so the pilots weren't exactly enjoying the ride when going through turns. Running away when asked to drive the car LOL The CAN-AM versions absolutely owned. Nothing would stand against this beast by far. Unladen 845 Kg and 1100 BHP, 400 liter fuel tank, insane. Perfect for taking mothers-in-law to the hipermarket :)

You don't know ... ( 1 month ago by lolle18)

You don't know anything... the 917 engine has nothing to do with the 911 engine - 911 is a boxer, while the 917 is a flat 12-cylinder with a V12 crankshaft.

whats the top speed ... ( 1 month ago by carguy12345678910)

whats the top speed on this.

240 mph plus ( 1 month ago by capriguineo)

240 mph plus

carguy12345678910, ... ( 1 month ago by VonVoltage)

carguy12345678910, he tells you in the video that it did 246 mph at lemans. The haundieres straight was pretty much a top speed indicator for any car of the era.

I LOVE the sound of ... ( 1 month ago by F1god04)

I LOVE the sound of that engine when it revs and shifts. Not even the lovliest burble from a modern F1 car can top that.

A beautiful car! ... ( 1 month ago by kinmanyuen)

A beautiful car! It's design (1969) is timeless. Even their salesposter design was like from 200X.

so a flat 12 has ... ( 1 month ago by sensinyou)

so a flat 12 has nothing to with a flat six?
"boxer" means horizintally opposed, ie a "flat" mtr...

No, you're wrong! A ... ( 2 weeks ago by lolle18)

No, you're wrong! A boxer engine has a crankshaft with 1 exclusive crankpin for every con rod. The crankpins of 2 opposed pistons are shifted by 180 degrees, this means, the 2 pistons move in opposite directions - the 911 has such an engine. In a flat 12 engine like in the 917 or in all Ferrari "Boxers", including the Testarossa (in fact, these Ferrari engines aren't boxers!), 2 opposing pistons share THE SAME crankpin, just like in every V-engine - both pistons move into the same direction.

You should read the ... ( 2 weeks ago by lolle18)

You should read the Wikipedia articles on "Flat engine" and "Flat 12" to understand the topic. A flat engine isn't automatically a boxer engine.

the boxers, ie bmw ... ( 2 weeks ago by sensinyou)

the boxers, ie bmw motorcycles, use that two crankpin setup,because they would fly apart...but my guzzi uses only one crankpin, and its a lot torquier than a boxer,, but seriously, 917 is approaching 40, and FIA could see even then that the big engined cars were beyond the then current technology to keep them safe and remotely affordable to race.

Nice, but what's ... ( 2 weeks ago by lolle18)

Nice, but what's got your Guzzi to do with the topic? If it uses one crankpin for two opposing pistons and has 180
° between the left and right cylinder, then it's not a boxer engine. But as far as i know Guzzi uses 90° V-engines, right?

hmm i think my ... ( 2 weeks ago by sensinyou)

hmm i think my original question was whether the flat 6s are related to the flat 12s, apparently they are, and its a a valid question. secondly, i find that net/wikipedia spouting car folks know less than they think, it's just the internet, kid, get over yourself. ive actually seen a 917 run, have you?

A boxer, no matter ... ( 2 weeks ago by lolle18)

A boxer, no matter how many cylinders it got, looks the same as a flat or 180
° V-engine, when looked at it from external. That's the only similarity and relation. The internals are totally different - crankshaft, ignition order, oscillation behavior, mass-forces. The description in the mentioned Wikipedia texts is right (get any book on engine construction you can get and
proof me wrong); i'm engineer and studied this stuff long enough. Plus, having seen a 917 doesn't qualify as Having seen

an expert. I've ... ( 2 weeks ago by lolle18)

an expert. I've seen several 917s too, and driven a couple of 911 and Ferraris - now, does this make me an expert in something?

Hi Sensinyou, the ... ( 1 week ago by gcmc2)

Hi Sensinyou, the 917 engine is related to the 911 engine sort of once removed. Forerunner to the 917 was the 908/909 series which used a flat 8. It was effectively an extended 911 in magneseum. The 917 was a new block design with a 2 piece crank. In original 4.5 ltr from it also used the 911 piston/rod. Once the 917 engine had been expanded to 4.9/ 5.0 ltr there was no physical link to the 911 The lineage in design is still there.
The flat 6 engine then returned in the 936, 956 & 962

lolle18 does offer ... ( 1 week ago by gcmc2)

lolle18 does offer the correct definition of a boxer engine. It is also true to say that many engines are mistakenly referred to as boxers. Ferrari for instance as I think has been said, never made a boxer engine for a road car. They used boxer engines only in racing. They key to a true boxer is that the crankjournals are all in one plane and so referred to as flat plane or single plane crank. If you remove the crank and sit it on the bench all Journals (main and rod) lie flat on the bench.

So, in a true boxer ... ( 1 week ago by gcmc2)

So, in a true boxer at TDC/BDC, all crank journal centres AND cylinder bore centres are in the same plane.
The boxer term relates to the pugilist but is also misunderstood. Some think it represents two boxers facing each other and making sort of reciprical punching movements. It actually compares the movement of just the 2 pistons of 2 opposing cylinders to the the habit of 1 boxer punching his two gloves together often seen prior to start of a bout in a sort of "priming" ritual.

Yes, metalJBC, ... ( 1 week ago by gcmc2)

Yes, metalJBC, neither did Enzo Ferrari believe it could work but he found out otherwise the hard way !

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