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Gearbox & rear diff
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<blockquote data-quote="Lionel_Koh" data-source="post: 333723" data-attributes="member: 205"><p>Hope sifus can help:</p><p> </p><p>- how to tell what gearbox type we have ? ie is m20b20 & b25 same ratios ?</p><p>i things theres coding/ part nos rite ? where is this located ?</p><p> </p><p><span style="color: red">-Yes its same ....</span></p><p> </p><p>- the 325i sports came with shorter gearing g/box - wats the coding for this?</p><p>( this is not the dog leg version of the M3)</p><p> </p><p><span style="color: red">-Which 325 u refer to ?? E30 or E36?</span></p><p> </p><p>- wats the std rear diff gearing for m20b25 - is it 3.75? how to tel wat the ratio - where is it written?</p><p> </p><p>-<span style="color: red">Yes ...its 3.75...U can found it at d axle cover ...written on metal plate ...</span></p><p> </p><p>- if you fit a 4.44, it will give better pick but crusing in 5th at @ 100kmh , wat the revs? anybody running tis ratio can share - is it very high - screaming?</p><p> </p><p><span style="color: red">-Simple ...by raising d rear axle ratio 10% ...u getting 10% more on ur rpm .....better pick up for sure but u also lossing 10% on ur top speed....</span></p><p> </p><p>thnks</p></blockquote><p></p>
[QUOTE="Lionel_Koh, post: 333723, member: 205"] Hope sifus can help: - how to tell what gearbox type we have ? ie is m20b20 & b25 same ratios ? i things theres coding/ part nos rite ? where is this located ? [COLOR=red]-Yes its same ....[/COLOR] - the 325i sports came with shorter gearing g/box - wats the coding for this? ( this is not the dog leg version of the M3) [COLOR=red]-Which 325 u refer to ?? E30 or E36?[/COLOR] - wats the std rear diff gearing for m20b25 - is it 3.75? how to tel wat the ratio - where is it written? -[COLOR=red]Yes ...its 3.75...U can found it at d axle cover ...written on metal plate ...[/COLOR] [COLOR=red] [/COLOR] - if you fit a 4.44, it will give better pick but crusing in 5th at @ 100kmh , wat the revs? anybody running tis ratio can share - is it very high - screaming? [COLOR=red]-Simple ...by raising d rear axle ratio 10% ...u getting 10% more on ur rpm .....better pick up for sure but u also lossing 10% on ur top speed....[/COLOR] thnks [/QUOTE]
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