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> Informatie tehnica motor M30, topic dedicat motorului M30
bartro
post Jan 31 2012, 10:49 PM
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Despre chiulase pe M30:
http://www.firstfives.org/faq/cylinder_hea...er_head_faq.htm

Informatie tehnica despre blocuri:
http://www.bimmersport.co.nz/forums/index....=15756&st=0


M90 cs M30:
http://bigcoupe.com/phpBB2/viewtopic.php?t=1296
http://forum.roadfly.com/threads/10196218?...40#post10201040
http://e9coupe.com/forum/showthread.php?t=1244



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warhammer23
post Jan 12 2013, 01:38 AM
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Pana acu am gasit asta
http://www.mye28.com/viewtopic.php?t=101900

From what i gathered the 2.8 and the 3.0 have the same stroke but different piston size.
That may mean same block same crank just different bore size.


----

Daca toate blocurile M30 sunt la fel (exceptand M90) ar trebui doar bore sa difere 2,8 l vs 3,0 l , stroke-ul fiind acelasi.
Si asa este? M90-ul se referea daor la 3,5 l nu?
Ca asa am inteles din primele link-uri.

Cred ca putem sa 'extrapolam'.
Daca M90 de 3,5 L avea 6,6 mm ca spatii intre cilindrii, ca din ce am citit e fix blocul de M88 dar cu chiulasa de SOHC iar cand au trecut la noua generatie de M30 (3453 cc la 3430 cc ), logic ar fi la 2,8 sa fie al 2-lea cel mai gros primu fiind 2,5-ul.

Si luand urmatoarele date:

3,5 - 3,453 cc - 93.4 mm bore x 84 mm stroke - 6,6 mm distanta
3,5 - 3,430 cc - 92 mm x 86 mm (diferenta totala de 1,4 mm adica 6,6 + 1,4 = 8 mm ?

Ca am calculat dupa urmatorul exemplu:
s38b38 (94,6 mm bore cu 5,4 mm intre ziduri) vs
s38b36 (93,4 mm bore cu 6,6 mm)
iar diferenta dintre bore (94,6-93,4) adica de 1,2 mm e = cu diferenta si dintre grosimea cilindrilor 6,6 - 5,4 = 1,2 mm
Are vreo logica ce zic biggrin.gif ca e si tarziu.

3,3 - 3,210 cc - 89 mm x 86 mm (diferenta fata de primu, de 4,4 mm + 6,6 = 11 mm ? )
3.0 - 2,986 cc - 89 mm x 80 mm (idem)
2.8 - 2,788 cc - 86 mm x 80 mm (diferenta de 7,4 + 6,6 = 14 mm ?

Ce parere ai?





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Posts in this topic
- bartro   Informatie tehnica motor M30   Jan 31 2012, 10:49 PM
- - bartro   M30 cu un turbo mare: http://www.mye28.com/viewtop...   Feb 7 2012, 11:29 AM
- - warhammer23   Legat de motorul M30b35 in principiu, stiu ca este...   Jan 11 2013, 04:39 PM
|- - bartro   Banjo bolts, da. Sunt piulitele care tin pe loc te...   Jan 11 2013, 05:23 PM
- - warhammer23   Am inteles, multumesc de info. Eu am mai gasit ac...   Jan 11 2013, 06:51 PM
|- - bartro   QUOTE (warhammer23 @ Jan 11 2013, 06:51 P...   Jan 11 2013, 10:01 PM
- - warhammer23   Pana acu am gasit asta http://www.mye28.com/viewto...   Jan 12 2013, 01:38 AM
- - warhammer23   Se pare ca am primit un raspuns pe un forum extern...   Jan 12 2013, 07:02 PM
|- - bartro   M90 a fost primul 3.5, care avea cursa mai scurta ...   Jan 18 2013, 01:31 PM
- - warhammer23   Si asa de mica e distanta? Inseamna ca nu toate ...   Jan 18 2013, 03:40 PM
|- - bartro   Nu stiu cum sa masor grosimea la pereti. Ar trebui...   Jan 18 2013, 03:58 PM
- - warhammer23   Nu, nu eu ma refeream strict la : iei linia/subl...   Jan 18 2013, 04:23 PM
|- - bartro   QUOTE (warhammer23 @ Jan 18 2013, 04:23 P...   Jan 18 2013, 04:41 PM
- - warhammer23   Si mai stiu ca la S38b36 overbore maxim este 0,4 m...   Jan 18 2013, 04:40 PM
- - warhammer23   Nu ma intereseaza doar acel lucru, dar de acolo am...   Jan 18 2013, 04:51 PM
|- - bartro   Poze cu al meu 2.8 plin de calcar sau ce o fi mize...   Feb 4 2013, 10:29 PM
- - warhammer23   Ce tare, fix 14 mm cat calculasem si eu. Am int...   Feb 5 2013, 01:13 PM
- - bartro   Din M30B25 se face M30B28 prin schimbarea de vibro...   Feb 5 2013, 01:53 PM


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