Racing Blog

Project and Technical Write ups for BMW and Porsche.

E46 Rear Subframe Reinforcement Plates

E46 BMW Rear Subframe Reinforcement

By Andrew Lang | Jul 7, 2013

  Similar to the E36 BMW the E46 series chassis was cursed with thin sheet metal in some vital areas. The rear subframe, particularly on the early produced non-M 3 Series, often rips from the mounting points over time. While BMW made a recall kit for the E36 chassis they didn’t do so for the…

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E30 BMW Rear Subframe Modification for Toe and Camber Adjustment

By Andrew Lang | Jul 7, 2013

The method for modifying the E30 subframe to allow for camber and toe adjustment is nothing new, we’ve been doing this for years since the E30 has been raced for so many years now. However we noticed that we get lots of E30’s on our alignment rack that haven’t had this modification done properly so…

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Building BMW Engines for Club Racing Competition and Power to Weight Ratio Classes

By Andrew Lang | May 28, 2013

Selecting the right engine platform for a club racing car is one of the biggest decisions a racer will have to make. In the last few years most of the competitive classes have shifted towards the power to weight ratio method of classification. For some engines and chassis this has been great, but for others…

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E36 and E46 Front Strut Tower Crack Repair and Reinforcement

By Andrew Lang | Mar 12, 2013

Similar to the issues that the E36 and E46 rear subframe mounts have, the front strut towers are notorious for cracking. We find this happens often especially when using coil overs with camber plates and stiff springs. This particular car had some cheap aftermarket camber plates installed with a fairly poor design. The flaw we…

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BMW Race Car Aerodynamics Part 3: Diffusers, Rear Wings, Venturi Tunnels, Underbodies

By Andrew Lang | Jan 31, 2013

Finally we can focus on the areas of the car that really tie the whole system together. As we’ve discussed before its crucial that the car be considered as a complete aerodynamic system, not as separate components. Whenever a single component is changed, one has to consider how that affects flow in other regions. To…

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Lang Racing Discount LED’s Light the Way to Victory for 949 Racing at the WERC 25 Hours of Thunderhill

By Andrew Lang | Jan 27, 2013

We knew we had stumbled upon a great way to bring cost effective LED lighting to our fellow racers when we started experimenting with our own line of LED Lighting solutions in early 2012. There was some trial and error and debugging trying to get some previously untested lights to work in the incredibly demanding…

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E36 BMW Rear Subframe Reinforcement

By Andrew Lang | Jan 14, 2013

In the never ending pursuit of creating a strong and light unibody chassis BMW occasionally makes mistakes. The E36 chassis has a few structural weak points, the front strut towers, the rear subframe mounts are some of the most common failures. In order to keep the frame as light as possible BMW used some thin…

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AST Releases The New 4150 Suspension Upgrade

By Andrew Lang | Dec 28, 2012

All New AST 4150 Damper AST is now releasing its update to the 4100 series damper; the AST 4150 Series Damper. The 4150 design builds on the basic architecture and market success of the AST 4100 series monotube single adjustable damper, and brings experience learned in the recent wins in GRAND-AM Continental Tire Sports Car Challenge,…

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Installing AIM MXL Pista Datalogger on a SPEC 944 Race Car or Other Motronic ECU

By Andrew Lang | Dec 15, 2012

We recently finished building our 944 project car that we’ve had on the back burner for over a year. The push to finally complete this project was to compete with this car in a 14 hour endurance race at Chuckwalla in December. Our biggest focus for a race like this, and any of the other…

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