Subframe bushings?

the_duke · 10-09-2016, 11:53 AM

Can anyone speak to subframe bushing upgrades? I've seen a few posts on this forum where guys have said they've put in more aggresive, even solid, subframe bushings, but I haven't seen anyone really talk about what it did to the car. What I'm wondering is, what difference have you seen in the chassis characteristics? Would you consider it a real performance upgrade or more of a 'because racecar' type thing? Feel free to divulge if you have done this on non-f22 chassis's.

Bee Pee · 10-10-2016, 03:01 AM

Duke,

Have a read of this thread.

DVC is yr man and BTW your M235i will already have the underbelly chassis brace I refer to in the thread

BP

the_duke · 10-10-2016, 03:46 AM

Just what I was looking for. Thanks.

Pparana · 10-13-2016, 05:08 PM

I have done them, a big improvement over stock. I used superpro bushings for f30. I also did differential bushings at same time.

casualDIYer · 10-15-2016, 04:05 PM

I'm thinking FCA bushings because I hear the stock ones die an early death as a result of enthusiastic driving. Problem is I hear too many models of solid bushing introduce extra vibrations because they're so stiff. Wouldn't it be the same for the sub frame bushings?

M-terkait · 01-27-2017, 11:41 AM

Quote:

Originally Posted by Pparana

I have done them, a big improvement over stock. I used superpro bushings for f30. I also did differential bushings at same time.

done all superpro bushings? how long will all that take like two days of labor?
im going to fit my quaife lsd soon, also need adjustability of front camber due to variance of left and right

kmli5 · 01-31-2017, 08:03 PM

Just did the Delrin subframe bushes from Bimmerworld.

Made a day and night difference. It helps putting power to the ground so much. Gone is the wobble from the subframe moving. especially when you are powering out a bumpy corner.

No extra harshness or vibration.

100% recommend it.

M-terkait · 02-01-2017, 08:45 AM

Quote:

Originally Posted by kmli5

Just did the Delrin subframe bushes from Bimmerworld.

Made a day and night difference. It helps putting power to the ground so much. Gone is the wobble from the subframe moving. especially when you are powering out a bumpy corner.

No extra harshness or vibration.

100% recommend it.

Nice, Im still going for superpro soon, because i also want the front bushes to adjust camber, my front camber (left/right) variance is big causing a pull to the left.
And thinking of LSD bushes considering that im also doing quaife install soon what do you think

Pparana · 02-01-2017, 12:52 PM

Quote:

Originally Posted by M-terkait

done all superpro bushings? how long will all that take like two days of labor?
im going to fit my quaife lsd soon, also need adjustability of front camber due to variance of left and right

2 days would be a lot, prob 2 days if doing front rear and diff swap.

Bee Pee · 02-02-2017, 12:28 AM

Quote:

Originally Posted by kmli5

Just did the Delrin subframe bushes from Bimmerworld.

Made a day and night difference. It helps putting power to the ground so much. Gone is the wobble from the subframe moving. especially when you are powering out a bumpy corner.

No extra harshness or vibration.

100% recommend it.

How much of a job is rear subframe bushes ? Is it drop the whole subframe to press out old and replace off the car or can you push out old then install new bushes one side at a time, using suitable sized socket and longer studding to remove old bushes ?

x233 · 02-02-2017, 02:13 AM

Quote:

Originally Posted by Bee Pee

How much of a job is rear subframe bushes ? Is it drop the whole subframe to press out old and replace off the car or can you push out old then install new bushes one side at a time, using suitable sized socket and longer studding to remove old bushes ?

Don't think replacing one side at a time is great idea.

Pparana · 02-02-2017, 11:30 AM

Quote:

Originally Posted by Bee Pee

How much of a job is rear subframe bushes ? Is it drop the whole subframe to press out old and replace off the car or can you push out old then install new bushes one side at a time, using suitable sized socket and longer studding to remove old bushes ?

going to be a huge pita, best to drop.

jmwilson125 · 02-02-2017, 06:49 PM

Quote:

Originally Posted by Pparana

going to be a huge pita, best to drop.

Curious about this too. I'd like to diy if possible. I believe the financial swaybar install shows you how to drop the subframe.

kmli5 · 02-03-2017, 01:21 AM

Quote:

Originally Posted by Bee Pee

How much of a job is rear subframe bushes ? Is it drop the whole subframe to press out old and replace off the car or can you push out old then install new bushes one side at a time, using suitable sized socket and longer studding to remove old bushes ?

The subframe must be lower evenly. It is much easier to drop the whole subframe and press out the bushing.
My shop charged 6 hrs for the job which I think is more than reasonable.

I am pretty sure there is a DIY from forum member VTL. Check out his build page in the Australia 1 series E series forum.

Bee Pee · 02-03-2017, 03:28 AM

Quote:

Originally Posted by x233

Don't think replacing one side at a time is great idea.

Neither do I !!!

I was suggesting if the swap could be

1.work on one side
2 then switch to work on the other side

You change out all 4 bushes without lowering s/frame completely.....

Pparana · 02-03-2017, 07:28 AM

I did myself with a portable lift (trackback). You could do it I guess, you would prob have to cut out most of the bushings and then press out metal, also not sure if you could drop enough to seat new bushings. Really you can disconnect the driveshaft at the transmission and just replace those 6 bolts, drop the whole subframe LSD, suspension and change. III dropped into a moving dolly rolled out, changed rolled back in. 6 hours is more than enough. I see no benefit of trying this on the car. Just a lot of headache.

x233 · 02-04-2017, 02:22 AM

Quote:

Originally Posted by Bee Pee

Neither do I !!!

Thanks, Bee Pee. It's a good one. This made my day.

10-09-2016, 11:53 AM	#1
the_duke New Member 7 Rep 17 Posts Drives: m235i Join Date: Jan 2016 Location: Alexandria, VA iTrader: (0)	Subframe bushings? Can anyone speak to subframe bushing upgrades? I've seen a few posts on this forum where guys have said they've put in more aggresive, even solid, subframe bushings, but I haven't seen anyone really talk about what it did to the car. What I'm wondering is, what difference have you seen in the chassis characteristics? Would you consider it a real performance upgrade or more of a 'because racecar' type thing? Feel free to divulge if you have done this on non-f22 chassis's.
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10-10-2016, 03:01 AM	#2
Bee Pee Brigadier General 1784 Rep 4,528 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	Duke, Have a read of this thread. DVC is yr man and BTW your M235i will already have the underbelly chassis brace I refer to in the thread BP __________________ Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten: Current '22 X3M LCI..
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10-10-2016, 03:46 AM	#3
the_duke New Member 7 Rep 17 Posts Drives: m235i Join Date: Jan 2016 Location: Alexandria, VA iTrader: (0)	Just what I was looking for. Thanks.
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10-13-2016, 05:08 PM	#4
Pparana Captain 463 Rep 957 Posts Drives: 2015 m235i Join Date: Oct 2014 Location: Jacksonville Fl iTrader: (1)	I have done them, a big improvement over stock. I used superpro bushings for f30. I also did differential bushings at same time.
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10-15-2016, 04:05 PM	#5
casualDIYer Major 448 Rep 1,372 Posts Drives: 340i xDrive M Sport Join Date: Nov 2008 Location: Toronto iTrader: (0)	I'm thinking FCA bushings because I hear the stock ones die an early death as a result of enthusiastic driving. Problem is I hear too many models of solid bushing introduce extra vibrations because they're so stiff. Wouldn't it be the same for the sub frame bushings?
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01-31-2017, 08:03 PM	#7
kmli5 Private First Class 10 Rep 183 Posts Drives: E92 M3 Join Date: Mar 2012 Location: Melbourne iTrader: (1)	Just did the Delrin subframe bushes from Bimmerworld. Made a day and night difference. It helps putting power to the ground so much. Gone is the wobble from the subframe moving. especially when you are powering out a bumpy corner. No extra harshness or vibration. 100% recommend it. __________________ 2008 BMW M3 \| 6MT \| OEM Exhaust Mod \| Black Grilles \|
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02-03-2017, 07:28 AM	#16
Pparana Captain 463 Rep 957 Posts Drives: 2015 m235i Join Date: Oct 2014 Location: Jacksonville Fl iTrader: (1)	I did myself with a portable lift (trackback). You could do it I guess, you would prob have to cut out most of the bushings and then press out metal, also not sure if you could drop enough to seat new bushings. Really you can disconnect the driveshaft at the transmission and just replace those 6 bolts, drop the whole subframe LSD, suspension and change. III dropped into a moving dolly rolled out, changed rolled back in. 6 hours is more than enough. I see no benefit of trying this on the car. Just a lot of headache.
	Appreciate 0 Quote