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      03-24-2024, 12:12 PM   #7
GuidoK
#buildnotbought
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Drives: Z4 3.0i ESS TS2+
Join Date: Jul 2012
Location: Tinkering in the garage

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Quote:
Originally Posted by Westersund View Post
I've decided to revert back to an oil weight that the bearing clearance in the S54 calls for so I'm using Motul 300V 10W-40.
Are you sure that's wise? the bearing clearance on the s54 rodbearings is considerably larger than on say a m54.
10W40 is also an oil weight that is used by a lot of people that have a m54b30.
Although it's difficult to say which engine runs hotter. The s54 takes longer to heat up evenly (cast iron block) but also has an oil cooler with thermostat.
I think in the end rodbearings are just a part of life for the s54/65/85 owner. Calculated costs for high revving undersquare engines.
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Z4 3.0i | ESS TS2+ supercharger | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers/KW camber plates | Sachs race engineering clutch | tons of custom sh#t
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