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We’re engineering as hard and as fast as we can this week, all in the name of fitment.
Although, we’re not referring to wheel fitment. Currently, we’ve got Ashley’s E90 3-series up on a lift, wheels off, ready to party. And by party, we mean “replace the stock 3-series front brakes with an E90 M3’s front brakes.” This has been one of our big fabrication tasks this week, as the front brakes are not a simple unbolt-and-bolt exercise. To replace the stock rotors, calipers and brackets with those of an M3, there’s a bit of work involved.
Originally, we wanted to get everything to fit up nicely with the stock brackets. Thanks to differences in part sizes, we had to machine down the calipers just a tad. Sure, it made them shiny and fixed the fitment issue, but not everybody wants to take a rapidly-spinning drill bit to their M3 front brake calipers. Therefore, we went about searching for a new answer. That answer? The bracket. Here’s a picture of the stock one in the caliper, followed by our prototype:
Don't worry, it's only aluminum for prototyping. We'll make the final production version out of steel, since nobody should go 3 laps and have to worry about exploding brake systems.
With this bracket, it should be all that's required to install E9x M3 front brakes on an E9x 3-series.
http://www.fluidmotorunion.com/archives/5194
Although, we’re not referring to wheel fitment. Currently, we’ve got Ashley’s E90 3-series up on a lift, wheels off, ready to party. And by party, we mean “replace the stock 3-series front brakes with an E90 M3’s front brakes.” This has been one of our big fabrication tasks this week, as the front brakes are not a simple unbolt-and-bolt exercise. To replace the stock rotors, calipers and brackets with those of an M3, there’s a bit of work involved.
Originally, we wanted to get everything to fit up nicely with the stock brackets. Thanks to differences in part sizes, we had to machine down the calipers just a tad. Sure, it made them shiny and fixed the fitment issue, but not everybody wants to take a rapidly-spinning drill bit to their M3 front brake calipers. Therefore, we went about searching for a new answer. That answer? The bracket. Here’s a picture of the stock one in the caliper, followed by our prototype:
Don't worry, it's only aluminum for prototyping. We'll make the final production version out of steel, since nobody should go 3 laps and have to worry about exploding brake systems.
With this bracket, it should be all that's required to install E9x M3 front brakes on an E9x 3-series.
http://www.fluidmotorunion.com/archives/5194
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