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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Fri, Jul-27-2018, 03:32:45 PM   #41
albino09
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Default Re: Best subframe repair options as of July 2018?

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Originally Posted by TboneM3 View Post
Ya but what about 8 years later, surprise! I don't know, I see your logic, but I just would always want a plan b waiting. It's a shitty situation for all of us unfortunately- the never really knowing 100% what may happen in the future part :/
If he installs a brand new RACP, with welded in plates, and foam, and it's cracked 8 years later, its already beyond saving. You're not going to want to cut out welded in plates and redo all of that anyway. It would be better to just start over IMO.
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Old Fri, Jul-27-2018, 03:36:47 PM   #42
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Default Best subframe repair options as of July 2018?

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Originally Posted by Toasty View Post
I sure hope we hear from him soon and that's he doing well. As I said before in this thread, I like his designs and think he's doing important work, and I'd like to see him succeed.
+1!!!

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Originally Posted by bimmerfan08 View Post
Points to consider but welding done poorly/incorrectly can have its own set of downsides. Fatigue of metal, distortion of metal due to uneven heating/cooling, etc.

That can happen and welding thin sheet metal is far more difficult.

But...as long as you start the pool on the plate and push it onto the PROPERLY PREPPED sheet metal then it welds up no problem. Prep work is key. If the prep isnít done then you will blow holes in the sheet metal which isnít much different that what you would do to epoxy the plates on.
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Last edited by bigjae1976; Fri, Jul-27-2018 at 03:48:10 PM.
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Old Fri, Jul-27-2018, 04:11:09 PM   #43
terraphantm
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Default Re: Best subframe repair options as of July 2018?

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Originally Posted by albino09 View Post
If he installs a brand new RACP, with welded in plates, and foam, and it's cracked 8 years later, its already beyond saving. You're not going to want to cut out welded in plates and redo all of that anyway. It would be better to just start over IMO.
And frankly if I still have this car in 8 years, Iíll probably be putting on so few miles on it that it will be a moot point.
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Old Fri, Jul-27-2018, 05:06:46 PM   #44
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Default Re: Best subframe repair options as of July 2018?

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And frankly if I still have this car in 8 years, I’ll probably be putting on so few miles on it that it will be a moot point.
I would like to take this opportunity to express my dismay at you not reinforcing your RACP yet. AND you're a forum mod! Vote to ban!!!

lol
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Old Fri, Jul-27-2018, 05:14:03 PM   #45
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Default Re: Best subframe repair options as of July 2018?

Everything -appears- perfect on my car but of course, I'm concerned.

Thinking about getting 8 foam kits from ECS, go to town and hope for the best.

Would prefer to keep oem appearance rather than welded or riveted plates and trunk brace. (Though if it was broken would do whatever is necessary).
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Old Fri, Jul-27-2018, 05:16:52 PM   #46
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Default Re: Best subframe repair options as of July 2018?

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I would like to take this opportunity to express my dismay at you not reinforcing your RACP yet. AND you're a forum mod! Vote to ban!!!

lol
Yeah I know. Obioban and his brother gave me shit for it when we were working on my clutch the other day too lol. What can I say, when I bought the car the dogma was that it was exceptionally rare for failures to occur in late model cars. And by the time the truth of the matter came to light, I was already at a high enough mileage where it was all but guaranteed I had cracks. I didnít have the capability to DIY any of the work, and didnít have the money or time to take it to a shop.
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Old Fri, Jul-27-2018, 05:49:10 PM   #47
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Default Re: Best subframe repair options as of July 2018?

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Yeah I know. Obioban and his brother gave me shit for it when we were working on my clutch the other day too lol. What can I say, when I bought the car the dogma was that it was exceptionally rare for failures to occur in late model cars. And by the time the truth of the matter came to light, I was already at a high enough mileage where it was all but guaranteed I had cracks. I didn’t have the capability to DIY any of the work, and didn’t have the money or time to take it to a shop.

Lol...totally understood. It’s not a cheap or easy repair. I’d rather replace the motor.

It’s a great excuse to learn how to MIG weld if you go the DIY route. MIG welding is fairly easy. You’re a smart dude so you’ll pick it up quick.
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Old Fri, Jul-27-2018, 05:59:58 PM   #48
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Default Re: Best subframe repair options as of July 2018?

I reinforced my RACP before there were so many options out there. I did the AKG SF bushings, epoxied Turner plates and the BMW foam on the rear mounts a 5 years back. Since then there have been so many new options that have been developed and are possibly better, but I haven't had any new issues after 5 years, 50k ish miles, and about 10 track days.
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Old Fri, Jul-27-2018, 06:15:49 PM   #49
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Default Re: Best subframe repair options as of July 2018?

4 years ago i saw a small hairline crack near the rear driver side mount.

Brought it in to a shop, they installed Turner plates with Epoxy, no welds and i inspect once a year and zero issues here aka no more cracks, no plate movement, no deformation.

Took the same car to another shop, saw the epoxy and said it was a big nono and the job was not done properly.

Bottom line is, after 4 years and around 60k km of daily driving/spirited driving i have no issues with Turner plates and Epoxy.

In my books and for my application, the problem is resolved.
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Old Fri, Jul-27-2018, 06:21:06 PM   #50
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Default Re: Best subframe repair options as of July 2018?

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Originally Posted by terraphantm View Post
Yeah I know. Obioban and his brother gave me shit for it when we were working on my clutch the other day too lol. What can I say, when I bought the car the dogma was that it was exceptionally rare for failures to occur in late model cars. And by the time the truth of the matter came to light, I was already at a high enough mileage where it was all but guaranteed I had cracks. I didnít have the capability to DIY any of the work, and didnít have the money or time to take it to a shop.
People love it when I go issue hunting with their cars.

Quote:
Originally Posted by BigLooga View Post
4 years ago i saw a small hairline crack near the rear driver side mount.

Brought it in to a shop, they installed Turner plates with Epoxy, no welds and i inspect once a year and zero issues here aka no more cracks, no plate movement, no deformation.

Took the same car to another shop, saw the epoxy and said it was a big nono and the job was not done properly.

Bottom line is, after 4 years and around 60k km of daily driving/spirited driving i have no issues with Turner plates and Epoxy.

In my books and for my application, the problem is resolved.
Anyone who poo poos on epoxy simply does not understand the strength it can yield.
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Discussing Best subframe repair options as of July 2018? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)