The same engine shop that builds the racing engines also builds the street car engines; these talented engineers, machinists, and builders have built hundreds of engines from OEM street rebuilds to full-blown racing engines. Performance increase for the cash though, nothing can touch it. This long block assembly meets our stringent requirements for our own race cars and is the perfect solution to replace your worn out S54.

S54 rebuild costs and who? How much do you guys think it'll cost to rebuild one? The CarBahn Autoworks S54 3.3L race engine rebuild is blueprinted and balanced, featuring CP centered pin low friction forged pistons and Carrillo forged connecting rods. Regardless of the cause the result is the bearings show premature wear. Oh yeah they do. Last couple of bits the short shift kit and quick steering rack, well worth the upgrades, specially for the track. Think I paid £400 for a 5.1kg flywheel and the acceleration improvement was night and day, just feels a lot more lively and responsive. They do require a few special tools but you can make or improvise alternatives. Yeah that's on my to-do list too actually, I like the idea of weightier steering also with that mod. While the sub frame is out we shot blast it and apply also replace all of the rear bushes (inc. suspension arms) with upgraded Powerflex bushes and complete the work with our 4 wheel alignment setup. Average Replacing the engine bearings should be done with the upmost care and attention, whilst you can just replace the bearings like for like we take the time to make sure every journal is perfectly cleaned, inspected and measured.

We regularly check the Diff play and condition as part of all our M3 services. One other note: Although the S54 is (especially for its age) a tremendous engine, its not super exotic, so any good engine shop can rebuild one. Steve Dinan has been building high performance and racing engines for BMW’s since 1977, winning 11 racing championships including 3 prototype championships and two 24 Hours of Daytona. If the issues are left unattended it can cause serious damage to the rear diff assembly so we would recommend overhauling the diff when it develops signs of a problem.

Good A racing spec multi-layer-steel (MLS) head gasket is utilized. Make sure you do a lot of research on Vanos system and do a full rebuild. Like most cars there are common areas that can need attention. Steve Dinan has been building high performance and racing engines for BMW’s since 1977, winning 11 racing championships including 3 prototype championships and two 24 Hours of Daytona. We also give your VANOS a full Beisan Systems treatment. Steve’s car was missing one of the nuts for this, so one was removed from our own S54 E36 to finish it off nicely. Regardless of the cause the result is the bearings show premature wear.