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 2 valves vs 4 valves per cylinder

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16_Valve_
Interceptor F7P
matrix_023
7 posters
Idi na stranu : Prethodni  1, 2
AutorPoruka
matrix_023

matrix_023


Broj poruka : 715
Datum upisa : 27.06.2010
Godina : 40
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeNed 9 Jan - 17:32:49

opet kazem da gresis i da dugotrajnost ne zavisi samo od kubikaze,no dobro...
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16_Valve_

16_Valve_


Broj poruka : 1895
Datum upisa : 26.06.2010
Godina : 33
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimePon 10 Jan - 19:27:06

Pa ne zavisi, uzmi G3 GTI 8V i GTI 16V, ista kubikaza, 8V garant duze traje...
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remus

remus


Broj poruka : 43
Datum upisa : 13.10.2010
Godina : 38
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimePon 10 Jan - 22:48:37

O cemu vi polemisete... Ima jos 100 drugih faktora koji uticu na dugotrajnost motora a ne to koliko ima ventila. 2 valves vs 4 valves per cylinder  - Page 2 371860
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16_Valve_

16_Valve_


Broj poruka : 1895
Datum upisa : 26.06.2010
Godina : 33
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimePon 10 Jan - 22:52:30

Pa morao sam nekako da nazovem temu, a uglavnom ovi motori sa 4 ventila po cilindru imaju vecu snagu od ovih sa po 2 kada se radi o istoj kubikazi 2 valves vs 4 valves per cylinder  - Page 2 31595
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remus

remus


Broj poruka : 43
Datum upisa : 13.10.2010
Godina : 38
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimePon 10 Jan - 23:06:13

A zasto to imaju vecu snagu?
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16_Valve_

16_Valve_


Broj poruka : 1895
Datum upisa : 26.06.2010
Godina : 33
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeUto 11 Jan - 15:22:41

Pa zato sto na svakom cilindru imaju po 2 ventila vise, jedan usisni i jedan izduvni... Bolje "Usisava" i "Izduvava"...
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remus

remus


Broj poruka : 43
Datum upisa : 13.10.2010
Godina : 38
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeUto 11 Jan - 22:55:35

Ok. A od cega zavisi trajnost motora?
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remus

remus


Broj poruka : 43
Datum upisa : 13.10.2010
Godina : 38
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeUto 11 Jan - 23:23:43

Mean Piston Speed
- -----------------
The best known "rule of thumb" is mean piston speed (average
speed the piston travels at a fixed rpm). It goes like
this:

Mean Piston Speed Result
------------------ ------
Under 3,500 ft/min Good reliability
3,500-4,000 ft/min Stressful, needs good design
Over 4,000 ft/min Very short life


Mean piston speed is easy to determine. It's based on the
piston stroke and rpm.

Cm = 0.167 x L x N

Cm = mean piston speed in feet per min
L = stroke in inches
N = crankshaft speed in rpm

Using the 1988 E28 M5 as an example:
E28 M5, Bore and stroke 3.68 x 3.31 in (93.4 x 84 mm)
At 6,900 rpm (factory redline)

Cm = 0.167 x 3.31 x 6900 = 3,814 ft/min

At 7,200 rpm (Dinan chip redline) = 3,980 ft/min
At 6,500 rpm (max constant speed) = 3,593 ft/min
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matrix_023

matrix_023


Broj poruka : 715
Datum upisa : 27.06.2010
Godina : 40
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeČet 13 Jan - 17:47:41

Znaci da vidimo Renault 19 16v

Cm=0.167x3.29x7000=3846 znaci nije lose,potrebna dobra konstrukcija

Golf VR6

Cm=0.167x3.56x6500=3864 moj je dugotrajniji za brucu po ovome Smile

plus da uzmemo da nisam video VRa koji ne vrti do 7 znaci boom Smile
Nazad na vrh Ići dole
remus

remus


Broj poruka : 43
Datum upisa : 13.10.2010
Godina : 38
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeČet 13 Jan - 22:27:48

Yugo Cm=0.167x2.16x6500=2344 ???? Po ovom bi yugo trebalo da je vecan,ali?
Nazad na vrh Ići dole
matrix_023

matrix_023


Broj poruka : 715
Datum upisa : 27.06.2010
Godina : 40
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimePet 14 Jan - 12:33:22

remus ::
Yugo Cm=0.167x2.16x6500=2344 ???? Po ovom bi yugo trebalo da je vecan,ali?
pa i bio bi mozda vecan da su upotreabljeni kvalitetni materijali,ipak je to presudno a svi znamo kakav je kvalitet izrade kod nas
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Sinisa 309 GTI

Sinisa 309 GTI


Broj poruka : 591
Datum upisa : 20.06.2010
Lokacija : Beograd

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimePet 14 Jan - 23:07:19

Bas ste me nasmejali Very Happy Ventilko dere svoju staru kozu da je VR6 najbolji na svetu,matrix se uvredio pa brani rendzu,remus ubacio neku forumulu koja je obojicu bacila u rebus....sou! 2 valves vs 4 valves per cylinder  - Page 2 39249 4 strane dezinformacija. mrzi me da pisem,ali obojica ste se nalupetali fino.
ps. nemojte da se sad naljutite na mene sto iznosim iskreno misljenje 2 valves vs 4 valves per cylinder  - Page 2 82995
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16_Valve_

16_Valve_


Broj poruka : 1895
Datum upisa : 26.06.2010
Godina : 33
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeSub 15 Jan - 0:38:46

Sinisa, nemoj da te mrzi da pises 2 valves vs 4 valves per cylinder  - Page 2 733631
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remus

remus


Broj poruka : 43
Datum upisa : 13.10.2010
Godina : 38
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeSub 15 Jan - 2:19:20

remus = rebus Exclamation Question 2 valves vs 4 valves per cylinder  - Page 2 31595
Nazad na vrh Ići dole
matrix_023

matrix_023


Broj poruka : 715
Datum upisa : 27.06.2010
Godina : 40
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeSub 15 Jan - 12:52:47

sinisa da ima neki argument napisao bi,ovako samo ispada kao da zna a u stvari ne bi da lupi siso
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Sinisa 309 GTI

Sinisa 309 GTI


Broj poruka : 591
Datum upisa : 20.06.2010
Lokacija : Beograd

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeSub 15 Jan - 14:56:30

misli sta hoces siso mrzi me da pisem,kad budem raspolozen oglasicu se
Nazad na vrh Ići dole
matrix_023

matrix_023


Broj poruka : 715
Datum upisa : 27.06.2010
Godina : 40
Lokacija : Zrenjanin

2 valves vs 4 valves per cylinder  - Page 2 Empty
PočaljiNaslov: Re: 2 valves vs 4 valves per cylinder    2 valves vs 4 valves per cylinder  - Page 2 Icon_minitimeSub 15 Jan - 15:05:15

aj cekamo Smile
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2 valves vs 4 valves per cylinder
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