Highest HP 4g63 engine (from 2007)

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Nov 4, 2011, 02:22 AM

#841

eTiLiKo

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Quote:

Originally Posted by gasolinebaptism

Want to calculate maximum speed now? And get rid of dead time at TDC and BDC and the acceleration after each?
I'm saying that you may be right with "average speed", just that Spyros didn't quote "average speed"

If you want we can calculate acceleration, maximum speed etc., but the numbers that Spyros mentioned was obviously average speed.

Quote:

Originally Posted by dtrackstar

i'm guessing andrea is from a rival shop in greece.

Oloi aderfia hmaste

AHAHAHHAHA, nono mate, I'm from Italy and I have a lot of admiration for what Spyros do, he his a real R&D man!!!

This is only math...

Nov 4, 2011, 06:55 AM

#842

bostonhatcher

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Quote:

Originally Posted by eTiLiKo

Hi Spyros,
the average piston speed that you indicate for F1 engines is wrong. In the V10 era F1 engines have a stroke that was between 41 and 43mm. Now in the V8 era the stroke is about the same, or smaller. So, assuming a stroke of 43mm at 18.000rpm, it translate into 25.8m/s.
Also if we consider the 20.000rpm revlimit of the 2006 season, it will be 28.7m/s.
Andrea

+1

0.043 meter stroke
=0.086 meters traveled per revolution

0.086 * 18000 rpm = 1548 meters traveled in a minute

1548 / 60 seconds in a minute = 25.8 meter/sec

This is however mean piston speed, not peak.

Spyros, let's see your math for peak speed

Nov 4, 2011, 07:59 AM

#843

griceiv

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Quote:

Originally Posted by bostonhatcher

You have to know the rod length to calculate the peak piston speed, but this link does a good job of explaining it in the "piston motion" section.

http://www.epi-eng.com/piston_engine..._cup_to_f1.htm

Nov 4, 2011, 08:16 AM

#844

russianvr4

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i think we found out who is responsible for greece's economical troubles, its spyros using all the $$ to build car parts

Nov 4, 2011, 08:55 AM

#845

SWOLN

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Funny, I was wondering how that effected him and his business...

Nov 4, 2011, 08:59 AM

#846

redleg225

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Quote:

Originally Posted by russianvr4

i think we found out who is responsible for greece's economical troubles, its spyros using all the $$ to build car parts

Nov 4, 2011, 09:12 AM

#847

FJF

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Quote:

Originally Posted by tscompusa

pretty amazing.. then the fact its 14psi.. pretty much the turbos so big that it shifts the powerband to the 2nd half of the rpm gauge . i was in another car that had a powerband similar to that. its amazing when youre just normal shifting around town at 6500rpm and it feels like 3000.

How is any of this a good thing on the road? Seriously. The Evo in the video is billed as a street car. What happens when the thing is driving around with 2.0-worth of torque before it begins to rev? It's a slug with a big wing. Really, I cannot for the life of me understand how this is something to be admired. A racecar that's kept on the boil, sure. A street car that has to negotiate the obstacles posed by life, itself, not so much. What don't I understand?

Nov 4, 2011, 09:27 AM

#848

94AWDcoupe

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Quote:

Originally Posted by SWOLN

Funny, I was wondering how that effected him and his business...

my guess is none at all. since this new economy makes rich people richer and poor people poorer. his focus is attracting those with money from around the world. he seems to be doing quite well at it.

Nov 4, 2011, 09:36 AM

#849

Hubbard 0

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Quote:

Originally Posted by SWOLN

Funny, I was wondering how that effected him and his business...

affected

Nov 4, 2011, 10:43 AM

#850

norrback

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F1 toyota v8 @ 18000 rpm.

------- Piston Motion Data -------
Average Piston Speed (M/S)= 23.99 in Meters per Second
Maximum Piston Speed (M/S)= 38.29 occurs at 80.096 Degrees ATDC
Piston Depth at 80.096 degree ATDC= 18.3123 MM Cylinder Volume= 134.8 CC
Maximum TDC Rod Tension GForce= 8546.75 G's
Maximum BDC Rod Compression GForce= 5938.14 G's

easy

/Andre'

http://www.anorrback.fi

Last edited by norrback; Nov 4, 2011 at 10:47 AM.

Nov 4, 2011, 12:22 PM

#851

Anton T.

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http://www.youtube.com/watch?v=IYaqskg3Wh0

Oooo my God!!!! It's incredible!!!!

Nov 4, 2011, 01:33 PM

#852

folienrainer

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Hello Spyros,

I am also a european guy, can you give me the costs for such a street project.
For the moment I will drive an E9 with about 450HP, my car is a daily driver and I am interested in a streetlegal 800HP´s

bes regards Rainer

Nov 4, 2011, 03:55 PM

#853

SWOLN

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Quote:

Originally Posted by Hubbard 0

affected

Thank you.

Nov 5, 2011, 12:15 AM

#854

lekonna

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Quote:

Originally Posted by norrback

/Andre'

http://www.anorrback.fi

f1 bore 98mm and 8-cyl displacement 2.4l means that the stroke size is around 39.8mm .. around 1.5" which is not much compared to the 4g63. This piston has a lot more distance to cover in a stroke. impressive stuff.