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-   -   Subframe / bushings upgrade (http://www.maxbimmer.com/forums/showthread.php?t=101427)

Mickey Knox 02-19-2008 11:35 AM

Subframe / bushings upgrade
 
hello,

I do need to replace my control arm bushings this year (93 325is) , and while i am at it i figure i might as well take a good look at all the other bushings and subframe reinforcements.

so far i had a eibach pro suspensions kit with front and real roll bars installed
http://www.tirerack.com/suspension/s...780&perfCode=S

along with

alignement kit http://www.tirerack.com/suspension/s...ded+Align.+Kit

strut mounts front and rear http://www.tirerack.com/suspension/s...255&perfCode=P

i had this done at a good autobody shop and aligned.

now i am thinking about adding this, to get rid of the weak bmw bushings and reinforce the subframe before it fails.

powerflex control arms and bushings
http://store.bimmerworld.com/shared/...t=products.asp

trailing arm toe bushings
http://store.bimmerworld.com/shared/...t=products.asp

rear subframe reinforcement kit
http://store.bimmerworld.com/shared/...t=products.asp

rear subframe bushing kit (powerflex)
http://store.bimmerworld.com/shared/...t=products.asp

questions i have:

- will the above be considered a complete subframe/suspension overhaul? did i miss anything? or is it total overkill?

- is powerflex making good product?

- is any or all of this doable in the driveway? (i have pretty much everything but a lift)

sorry for the lengthy post and the haevy linking, but i know how you guys like complete information :cool:

thx in advance

E36is 02-19-2008 12:01 PM

^^ good question and links! i need to do that to my ride this year as well.

bump!

ScotcH 02-19-2008 12:10 PM

pm sent

carjoe 02-19-2008 01:59 PM

Interesting. I've been thinking of doing this stuff to my car as well.

I've heard nothing but good things about Powerflex for other cars, I don't see why it would be any different for BMW's. I've used Energy Suspension poly bushings with good luck but haven't looked into their availability yet.

sthomas 02-19-2008 05:32 PM

I've been using the powerflex in the front lower control arm rear bushing spot and they work fine. Just pulled them out and cleaned them up a few weeks ago - look like new. I'm running the M# RTAB bushings with the GC enforcers and they seem nice and tight.

I also have UUC bushings ready to go in the rear sub-frame. Not installed so I can't say how they run yet.

You might want to check out the UUC products in addition to the Powerflex.

Mickey Knox 02-19-2008 08:28 PM

what do you guys think of those?
 
having no idea about bushing those sound good, are they?


http://www.uucmotorwerks.com/FCAB/

Mickey Knox 02-24-2008 12:55 PM

nobody?
 
noone has an opinion on those control arm bushings? i have no clue abotu suspension so i dont know if what they say makes sense or no

ScotcH 02-25-2008 12:56 AM

It makes sense, but it's too new. Not many people have tried the product yet (and probably none on this forum). The PF stuff is proven.

E36is 02-25-2008 07:32 AM

^^ in addition.. if your using your car 356 days, poly bushings arent that great of an investment. Ive talked with a few people who had poly bushing on their car and after one winter they were garbage (ie: cracked and deformed). Im thinking of just changing over to OEM M3 bushings as i use my car in winter months as well.

Mickey Knox 02-25-2008 09:20 AM

rgr that
 
so either oem m3 bushings or the PF ones for a daily driver then?

E36is 02-25-2008 10:18 AM

^^ after talking with a few people who installed poly bushings on their DD, im swaying to OEM M3 rubber bushings just for longevity specifically to cold climates.

Mickey Knox 02-25-2008 01:09 PM

ty guys
 
so as far as I understand it, only one of the control arm bushings can be replaced seperately, the rest has to be replaced with the control arm, correct? (i.e. balljoint)

so now i am thinking, new oem control arms, will the m3 bushing just be a straight fit or do i need the m3 control arms (can those even be used)?

sorry i am a total noob when it comes to suspension.

thx
mickey

ScotcH 02-26-2008 11:33 AM

M3 arms fit fine, and are a nice upgrade (solid balljoints). However, they are pricey. The regular non-M arms are fine for a DD (non-track car). Make sure to get only Lemforder brand parts.

Your car is a 325, so it uses centered LCABs. You need M3 bushings for a 96+ M3, and it will fit just fine on non-M arms. However, as stated earlier, I have the PF stuff in stock if you want those (front and rear).

98Dinan3 02-26-2008 01:17 PM

I've been running powerflex LCABs and 96+ M3 control arms for over a year now with no issues. Last time I checked, which wasn't that long ago, the bushings still looked like new. This is the 2nd winter with them in... Powerflex=*th-up* from me.

With that said, I've been really happy with everything I've bought from UUC. I can't see Rob putting out something crappy. UUC also = *th-up* from me.

Mickey Knox 02-26-2008 08:36 PM

rgr that
 
so new m3 arms, PF bushings for the control arm (with those arms do i need the m3 pf's or regular?) and pf's for the subframe with the reinforcement kit. anything else while i am down there? engine and/or tranny mounts? my tranny is kinda notchy at high cornering speeds and at high rpm and i heard thats what could be causing it

will be awhile before i can get to it though. 1.) still snowing 2.) alternator just died :-(

it will not be a track car but it will be close to that once i get home to the rolling hills of bavaria next year, so i want it to be beefy.

ScotcH, could you pm me a price for the pieces of the setup that you have available please?

thx guys
mickey


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