While the sub frame is out we shot blast it and apply also replace all of the rear bushes inc. First, clean off all the dirt around the subframe mounting points. I think the subframe on my e46 m3 finally gave out. Did you know that sprint motorsports offers subframe welding and shock tower crack repair for your bmw. The subframe is bolted to the chassis at four points under the trunk floor. E46 subframe major issue or overblown internet rubbish. Red numbered arrows represent the common areas the panel fails as well as the order they generally occur. If you have a bmw e46 or are in the market for a used one, you might have heard of the rear subframe issue. Mar 04, 2014 i found the crack after viewing a reddish motorsport video, i had looked before with the entire subframe out but i did not look in all of the right places so i dont know if is new or was existing. Dec 12, 2015 anyway, the e46 subframe issue came as a surprise to me. This car had a small crack on the passenger side and it was an easy.
E46 rear chassissubframe reinforcement kit the e46 rear driveline and suspension are very similar to that of the e36. Rear subframe reinforcement kit bmw e46 akg motorsport. We recommend going with a solid 75d red urethane subframe bushing if youre going to upgrade the bushings. Aug 15, 2017 fixing the bmw e46 cracked subframe issue if you have a bmw e46 or are in the market for a used one, you might have heard of the rear subframe issue. Quck call to redish motorsport for the subframe repair kit. I was going to mention reddish, he had some pics up on facebook of some reinforcement. Its one of the worst design flaws ive ever learned about affecting a bmw. Tdr4675412 e46 rear chassissubframe reinforcement kit. I got them welded on instead of epoxied, with my previous cracks drilled and welded too. Redish motorsport e46 v2 rear subframe racp reinforcement. Our specialist combo includes e9x rear subframe bushings and diff mounts. Redish motorsport are bmw specialist in bristol who offer the ultimate bmw experience when it comes to specialist procedures for your bmw mpower vehicle, at our fully equipped workshop in bristol.
E46 rear subframechassis reinforcement kit chicane motorsport. Ive owned only bmw m power cars for the past 6 years, a 5 series 525i e60, 3 series e90 320si and now am the lucky owner of a m3 e46 absolutely love them when theyre running well but have had so many problems with them that i need serious help and advise. Redish motorsport independent bmw specialists offering oil, insp 1, insp 2, cbs including valve clearances for all models of bmw. Jul 07, 20 similar to the e36 bmw the e46 series chassis was cursed with thin sheet metal in some vital areas. As well as permanently repairing and reinforcing the subframe mounting points, we also provide a folder with photos along the way for your records. Bmw m3 e46 genuine alloy wheel 19 bmw e46 m3 strut bar brace shock mount bracket. Detailed info about e46 m3 rear sub frame repair and strip great read.
Includes model range, engines, transmissions, safety equipment, crash testing, features and updates. This classaction suit was brought on due to numerous complaints, and bmw will inspect and repair at no cost to the owner or leasee of the vehicle. What happens is flexing of the rear subframe and body eventually crack and in extreme cases, pull out, the drivers side rear mount or the passenger side front mount from the body. With experience with both road and race m3s you can be sure your pride and joy is in good hands. Oceanside motorsports bmw repair 92058 oceanside audi. I decided to go with the redish motorsport plates as they have a good amount of surface area. Psdesigns redish motorsport bmw e46 chassissubframe. E46 m3 rear subframe strip down and repair tms motorsport. E46 rear chassissubframe reinforcement kit turner motorsport. Bmw e46 m3 subframe reinforcement solo motorsports. Hi guys, if anyone would like a look at the process to repairing a subframe, we are writing a blog on what we did to our own car e46 m3 subframe repair blog tms motorsport we also have a thread on this forum here about the subframe repair. We also sell our redish motorsport e46 subframe reinforcement plate kit v2 which can be seen here.
If i were you i would get it reinforced if you plan on owning it for an extended period of time. This is our latest e46 subframe reinforcement plate kit which is named and part numbered with a v2 aka version 2. In a spectacular final battle matt field won against kristaps bluss becoming the first noneuropean driver who has won an event in bikernieki. The e46 might be the most popular m3 chassis to mod by enthusiasts, but like all cars, th. Redish motorsport e46 v2 rear subframe racp reinforcement plate kit. Redish motorsport e46 rear subframe reinforcement kit. Apr 04, 20 redish motorsport has developed a kit to offer a cost effective long term solution to the welldocumented problem of floor cracking which the bmw e46 series suffers.
We use uhmw in all our machined suspension bushings because it is stiff, has almost zero deflection yet also absorbs some vibration. Jan 14, 20 the rear subframe can often fail due to the increased torque of a modified engine or higher suspension loads and track abuse. So good that we put our lifetime warranty on all of our subframe repairs. Welcome to oceanside motorsports bmw auto repair and maintenance.
Bmw e46, how widespread is the rear subframe issue. The v2 redishmotorsport psdesignse46rearsubframereinforcementkit has been designed to provide the best repair and reinforcement option available on the market, regardless of crack damage, age, mileage, service history or modifications made. One such problem is the rear subframe tearing or cracking, which actually led to a class action lawsuit settlement in 2009. Bmw settles e46 3series subframe lawsuit, promises to repair. E46 v2 racp reinforcement plate kit redish motorsport. Yes, we ran an e46 m3 story yesterday, but we make no apologies for coming back to. Redish motorsport e46 subframe reinforcement plate v2 kit. Redish motorsport e46 rear subframe reinforcement kit the. Hgk drift challenge was a great show today at bikernieki racetrack, with stars from 9 countries. Chassis rear subframe reinforcement in the bmw e36 brent. The e46 might be the most popular m3 chassis to mod by enthusiasts, but like all cars, they have their common problems. In my case the crack was located in the classic spot i. Bmw e46 m3 subframe cracks at 60,000 miles with original. E36 bmw rear subframe reinforcement lang racing development.
We had a 2002 m3 with 80k miles and tracked once and it had a small crack in the body just above the rr subframe mount. This is due to torque traveling through the driveline into the rear of the chassis through the poorlydesigned rear subframe mounting points. On the rear subframe of the e36 bmw created a fix for the chassis and made weld on plates that could be welded on retroactively to the early m3 and the rest of the e36 models if necessary. Another issue that can lead to subframe cracks, so check your boot floor too. The redishmotorsporte46rearsubframereinforcementkit has been designed to provide the best repair and reinforcement option apart from a new floor available on the market. Aug 15, 2017 if you have a bmw e46 or are in the market for a used one, you might have heard of the rear subframe issue. Motor trend explains, the suit originated in 2006 and claimed that defects in e46 3 series models cause fractures in the. E46 m3 subframe crack specialist james redish redish motorsport. Just like the earlier e36 chassis 3 series, the rear subframe to chassis attachment points on the e46 are all failure prone and can rip away from the unibody after time. There is a guide on youtube am at work but reddish. This comprehensive overhaul and upgrade of the rear of the e46 m3 will insure the car has many more years of fun available. Racp is the another failure that requires an additional reinforcement.
Then prep the metal for welding by sanding down the area completely down to the bare metal. Use leftright arrows to navigate the slideshow or swipe leftright if using a mobile device. After purchasing i found out that mine had a hairline crack, after dropping the subframe there were a few more that were hidden. Psdesigns, in partnership with redish motorsport, redeveloped the original chassis repairreinforcement plate kit for the bmw e46 3 series to offer a superior, more cost effective, long term solution to the welldocumented problem of floor cracking rear subframe as its commonly known which the e46 3 series suffers with.
I did this first because i knew if they wouldnt fix it, it would at least be in the system and acknowledged by bmwna that the. Have you read our blog about bmw e46 m3 rear subframe. Ti motorsport offer a thorough and cost effective repair solution to this common issue for e46 m3s. But even a wellmaintained vehicle could experience tears or cracks in the rear subframe. Bmw e46 3 series rear subframe tearing bimmershops. This problem is common among heavilyused e46 bimmers, especially those that were used for racing. Rod bearings, vanos, or smg pumps are not uncommon and not cheap or easy. The rear subframe was severely cracked around the rear driver side differential carrier mount and the carrier was hopping all around the place when the car was put in gear. It turns out this is a problem that plagues e46 models, especially m3 track cars. Now that i have an e46 m3, ill be getting the subframe reinforced for the peace of mind.
Bmw settles 3 series subframe suit, will inspect, repair. Redish motorsport has developed a kit to offer a cost effective long term solution to the welldocumented problem of floor cracking which the bmw e46 series suffers. Many m3 owners shudder when they hear the words subframe floor crack. All e46 m3 crack in the same way coupe, vert, manual or smg. If you drive your bmw e46 hard, chances are at some point you will need to repair this area. Bmw e46 2003 m3 smg coupe alternator and belt tensioner. So after reading the updated jezebel thread which mentioned subframe cracks, i decided to go and have a look at mine 2002 e46 330i. Similar to the e36 bmw the e46 series chassis was cursed with thin sheet metal in some vital areas. Based on the information gathered, two not to scale technical drawings of the rear left subframe member and how it is ties into the chassis were developed to aid in analysing the chassis as shown below. Home redish motorsport specialists for bmw mpower vehicles. Our engineers has developed a kit to offer a cost effective long term solution to the welldocumented problem of floor cracking which the bmw e46 series suffers. The bmw e36 and e46 chassis includes m3, 320i, 325i, 328i, 330i are prone to cracking at the rear subframe, and strut tower mounts when put to the stress of performance suspension, aggressive driving, normal commuting, and track events.
Cracked subframe on an e46 oceanside motorsports bmw repair. The best is reddish plates from the uk because it offers the most coverate. Cracked subframe on an e46 oceanside motorsports bmw. The attachment points where it gets bolted are spot welded to the sheet metal of the floor. The redishmotorsporte46v2rearsubframereinforcementplatekit has been designed to provide the best repair and reinforcement option apart from a new rear axle carrier panel from bmw available on the market to date, regardless of crack damage, age, mileage, service history, or modifications made.
Its suggested to do both subframe and racp reinforcements at the same time, while the subframe is out. Installing rear subframe and floor reinforcements in bmw e46 models 323i, 325i, 328i, 330i, and m3. The e46 rear subframe mounting points are prone to crack and rip partially or completely out of the chassis. We come across the issue on a regular basis and are well versed in fitting the reddish motorsport floor upgrade kits. E46 bmw rear subframe reinforcement lang racing development. Another issue that can lead to subframe cracks, so. Well its unfortunate that this flaw is very common and were getting really good at fixing them. The suit originated in 2006 and claimed that defects in e46 3 series models cause fractures in the rearaxle supports in the subframe. You can get these plates at turner motorsports or from reddish motorsports.
Since i plan on keeping my m3 for several years at least and driving it like its meant to be, its a worthwhile investment. The rear subframe, particularly on the early produced nonm 3 series, often rips from the mounting points over time. In fact that was once a recall from bmw on the matter, but that has now expired. Chassis rear subframe reinforcement in the bmw e36 on january 18, 2017 september 18, 2017 by brentfordracing racing a normal roadgoing car with stiffer suspension puts more stress onto the chassis than it was originally designed and this can cause cracks to develop near suspension mounting points. It also doesnt help if you already have cracks in the rear floor. Our experienced technicians are asecertified and work with stateoftheart equipment, allowing us to provide quality repairs on many makes and models. E46 rear subframe failure gallery turner motorsport. It will outlast other types of rubber or urethane bushings.
Anything from a simple light bulb to diagnosing that annoying engine light, installing a new transmission, fixing a dent, or. Psdesigns v2 e46 boot floor reinforcement plates hack. The previous owner obviously drove the car really hard. Once the paint and undercoating is removed, you can see the damage clearly. An unfortunate side effect of this is that the e46 also shares some of the same problems as the e36. These cars are known to have subframe issues and we strongly suggest to have your subframe reinforced to lengthen the life of your beloved e46.
This owner is currently winning our longest uk distance. As advanced and solid as the e46 feels it has a major weakness in the rear suspension. If youre thinking of buying a e46 m3, you should be aware of the all too common subframe cracking issue that affected all e46s. Regularly regarded as one of the uks premier specialists for bmw vehicles, we pride ourselves on outstanding customer service, unique proven procedures, and great competitive prices. Jun 18, 2009 if you own an e46, this may apply to you. Jan 09, 2015 worlds worst bmw e46 m3 subframe crack failure. Unlike the e36 m3, the e46 models did not receive sheetmetal reinforcements from the factory and subframe and floor failures continued to be a problem well into the e46 production. Rear subframe and floor failures are quite common on the e36 and e46 models. Basically due to engineering defects, the subframe of the e46 will eventually have tears on them. Bmw servicing specialist west sussex walkers autotech. May 25, 2017 bmw e46 subframe reinforcement2003 bmw m3 convertible. Fixing the bmw e46 cracked subframe issue speed academy.
E46 m3 subframe failure bmw m power page 1 owners forum. Jun 19, 2009 bmw settles e46 3series subframe lawsuit, promises to repair affected models ralph hanson june 19, 2009 comment now. Comprehensive e46 rear subframechassis reinforcement kit. While bmw made a recall kit for the e36 chassis they didnt do so for the e46 so we are left to our own devices to reinforce it. The subframe is bolted to the chassis at four points under the boot floor. In 2012 redish motorsport repaired e46 m3s in their workshop suffering from cracked floors, in 20 a further 38 were repaired, to date redish motorsport have now repaired well over 100 e46 m3s and we have sold hundreds of kits all over the world to individuals and businesses. He called me over to the shop to show me a big problem hed found. The original chassis design leaves a lot to be desired. And to my surprise probably believed like most owners that this would not happen to me i found a crack on the left side.
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