After the cracks have all been repaired, the chassis is prepped for the installation of reinforcement plates such as the ones here from Turner Motorsport.These are stitch-welded to the chassis, and then coated in POR-15, and then seam sealer/undercoat for rust protection.Īfter that, we move onto the subframe itself, as most customers elect to have the complete rear end re-bushinged using Powerflex Polyurethane bushings, which are lifetime guaranteed. This multiple track record holding E46 M3 TT car was at Vorshlag in Jan 2012 for a rear subframe bushing. If cracks are spotted, they are individually addressed by drilling the ends to terminate the cracking, ground down and welded. BMW E46 Rear Subframe Reinforcement + Bushings. This kit will save time when repairing the chassis, and is also strongly recommended as a preventative maintenance item.
We do this by thickening the metal and distributing the load over a larger area. Every e46 has the same design flaw but its the harder drive, more powerful cars like the M3 that tend to suffer the most. A typical subframe reinforcement will cost around 1,500 and if the entire floor needs to be replaced, you’re looking at somewhere around 4,000-5,000. This product reinforces the chassis sheet metal at the subframe mounting points. This constant abuse leads to fatigue in the metal, causing cracks and separation from the chassis.Normally at the time of reinforcement, the normal course of action includes complete subframe removal, cleaning of the subframe and associated chassis floor and an up-close inspection for damage. The crack from above turns through 90deg and travels right up. FOLLOW ME ON INSTAGRAM YEVSBuildsFOLLOW DANIEL'S DATSUN BUILD ON INSTAGRAM papachenks30Pt 1 How to Remove the Subframe. This occurs as the rear differential transmits the torsional load from the engine through the subframe, and then, into the chassis of the vehicle. We are specialists in BMW E36 and E46 subframe reinforcement, with custom design and installation of metal plates to better spread the load of the subframe. Stage 1 - E46 Subframe Mount Reinforcement Plates. This issue specifically appears in the rear mounting points of the subframe, which can tear out from their position in the sheet metal. The VAC Motorsports Rear Chassis Reinforcement Kit is highly effective while also being simple to install and saving you precious time for repairs in the. The issue was also common on the earlier 3 Series models and unfortunately, have reoccurred with the E46 from 1999-2006. These reinforcement plates will fit a stock mount for added strength but need to be trimmed to fit. 2001-2006 E46 BMW M3 - The stock M3 upper strut mount already does a good job of dispersing the loads of the suspension. Owners of the BMW 3 Series (E46 models) have been reporting cracks and damage in the rear subframe area of their vehicles. Owners of the BMW 3 Series (E46 models) have been reporting cracks and damage in the rear subframe area of their vehicles. E46 Rear Chassis/Subframe Reinforcement Kit T: 91 Part: TDR4675412.
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