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> Intrebare diferentiale pt E28
Mihai_AMD
post Nov 24 2010, 06:32 PM
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asa...
am si eu ceva intrebari..
in primavara vreau sa schimb grupul de pe masina,ca de la o vreme are o bataie cand schimb mai brusc,nu e de la bucsa de sus,zic ca e de la grup,ca si cand e bagata in viteza si ma bag sub ea si misc de cardan,acolo cat permite,e mai mare jocul decat inainte
la grupul meu scrie pe placuta S 3.91 0912 si pr grupul de rezerva(de pe e28 aceasi motorizare),fara S, decat 3.91 4951
de ce al meu are S in fata raportului?...si celelalte 4 cifre stei cineva ce mai inseamna?

a2a intrebare,daca as pune un blocant,cu raport mai mic,adica 2.91,3.45,etc....care va fi inconvenientul?demaraj mai slab sau viteza de top mai slaba?sau invers?


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05aBi
post Nov 24 2010, 06:45 PM
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S = autoblocant, deci tu practic ar trebui sa ai autoblocant pe masina. biggrin.gif
Daca e sa pui un diferential mai lung, pierzi pe partea cu demarajul, dar castigi pe partea cu viteza.

This post has been edited by 05aBi: Nov 24 2010, 06:46 PM


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bartro
post Nov 24 2010, 07:10 PM
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Pot sa ai si viteza top mai slaba, depinde cum merge masina acuma. Daca la viteza maxima sa plafoneaza usor la turatia maxima, pot sa castigi ceva viteza cu in diferential cu raport mai mic in cifre. Daca masina acuma ajunge la viteza de top dar mai ai loc de RPM, sau ajunge greu la viteza maxima, atunci un diferential mai mic o sa reduce si mai mult viteza de top.. ca nu are motor putere destula.

Si da, S pe diferential inseamna blocant.


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iorgos
post Nov 24 2010, 07:29 PM
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Pot sa-ti dau rapoartele de la diferentialele de E28

1) 518i, 520i = 4.10:1

2) 520iA, 520i* =3.91:1

3) 525e =2.93:1

4) 525eA =3.07:1

5) 525e CAT =2.93:1

6) 525i =3.64:1

7) 528i =3.46:1

8) 528i =3.25:1 (sport gearbox)

9) M535i =3.07:1

10) M535i Cat =3.25:1
535iA Cat

11) M535iA Cat =3.45:1

12) 524d =3.91:1

13) 524td =3.15:1 3.25:1**

* Versiune pentru Franta

** Versiune pentru Austria

Astea sunt datele luate dupa net, nu mai stiu dupa ce site, dar le-am printat. smile.gif
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Mihai_AMD
post Nov 24 2010, 10:10 PM
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mda....am intrebat ca idee ce pierd sau ce castig daca schimb raport diferential,ca nu am asta de gand,vreau sa imi gasesc vreodata blocant tot 3.91
nu am fost niciodata de acord cu schimbarea raportului....asta pt ca nu cred ca vreunu de aici e mai "citit" decat o armata de ingineri germani care au pus un anumit raport pe o anumita caroserie/motorizare smile.gif
a,ca vrei sa iti personalizezi masina proprotional cu stilul de condus e altceva...

app de S de pe placuta diff meu....sa-l ia naiba,ca blocant nu e...sau cel putin nu cred smile.gif
ramane de verificat,chiar m-a facut curios :?


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Ciupanezu
post Nov 24 2010, 10:18 PM
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Dacă are S, trebuie să fie autoblocant.
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Mihai_AMD
post Nov 24 2010, 10:26 PM
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hmmm....da....destul de ciudat...la toate masinile care le prind in curte verific ce grup are,dar la a mea sincer de 3 ani de cand am motorul/transmisia implicit grupul asta nu m-am uitat odata sa vad cum se invart rotile,sau macar sa fi curatat placuta.azi m-am uitat asa la nimereala..
si sincer sa fiu am cam facut partie unde am vrut cu e12-ele iernile trecute wink.gif))
maine la prima ora o suspend pt cercetari amanuntite smile.gif

sper sa nu fi fost vreo gluma proasta facuta de fostul proprietar al grupului,sa fi pus tablita la misto


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05aBi
post Nov 24 2010, 10:29 PM
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Am trecut de la 3.64 la 3.91, raspunde ceva mai bine la acceleratie decat inainte, iar viteza maxima a ramas aceeasi.

Where's the crime ? tongue.gif

Apropo Mihai, la cum mergi tu cu masina, sau cel putin la cum stiu ca mergi cu masina, nu cred ca aveai cum sa iti dai seama. biggrin.gif

This post has been edited by 05aBi: Nov 24 2010, 10:30 PM


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Mihai_AMD
post Nov 24 2010, 10:39 PM
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CITAT(05aBi @ Nov 24 2010, 10:29 PM) *
Apropo Mihai, la cum mergi tu cu masina, sau cel putin la cum stiu ca mergi cu masina, nu cred ca aveai cum sa iti dai seama. biggrin.gif

laugh.gif
da gabi sa stii,ca deseori cand iau curbele pe 2 roti simt ca partea care nu e in aer are aderenta smile.gif))))

This post has been edited by db85amd: Nov 24 2010, 10:40 PM


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haifisch
post Nov 24 2010, 10:56 PM
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laugh.gif snf (45).gif
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Mihai_AMD
post Nov 25 2010, 06:41 PM
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Azi la prima ora am mers la curte,am suspendat masina si intr-adevar..blocantul exista... celb (15).gif aflu si eu dupa 3 ani ca am blocant la masina...bagam mana in foc ca nu este...nu ca as fi verificat vreodata,dar nush,asa...
acum e nevoie de niste gume ca iarna vine nu mai asteapta sad.gif


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