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05-27-2010, 12:26 PM
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#16
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2nd Gear Member
Join Date: Apr 2006
Location: Waterloo/GTA
Posts: 105
Car: e30
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hmm ok thanks guys
im pretty sure my brake lines and trailarm bushes are fine, im really hesitant to drop the whole thing, and i only have one weekend to do all this so brake bleeding i dunno if i can include in the time alloted..
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05-27-2010, 12:55 PM
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#17
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6th Gear Member
Join Date: Apr 2010
Location: Ottawa
Posts: 1,818
Car: 2010 Mazdaspeed3
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Quote:
Originally Posted by Berlin
hmm ok thanks guys
im pretty sure my brake lines and trailarm bushes are fine, im really hesitant to drop the whole thing, and i only have one weekend to do all this so brake bleeding i dunno if i can include in the time alloted..
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Was just saying.. So far I've put 2 days work into my rear brakes. Only the trailing arm lines are done, the rest is just a headache. So if everything is out of the way, I would be nearly done.
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05-27-2010, 12:59 PM
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#18
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2nd Gear Member
Join Date: Mar 2008
Location: GTA
Posts: 199
Car: 1987 325i
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In that case, your method sounds good. Do you have a contingency plan for if the bushing core breaks and stays in the body? I'm unfamiliar with changing the subframe bushes with the 2" drop. I imagine it's less likely they break, but it's still something to consider. Shoot some penetrating lube on the SHCS (2 per side) that hold a plate under the bushings now to help insure they are free.
Rear springs are easy. Do you have a spring compressor for the fronts? Ball joint separator? Big pipe wrench for the strut collars?
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05-27-2010, 01:41 PM
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#19
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Cars in Perpetual Repair
Join Date: Nov 2007
Location: Guelph
Posts: 5,280
Car: 328i & 327i turbo
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Quote:
Originally Posted by Berlin
hmm ok thanks guys
im pretty sure my brake lines and trailarm bushes are fine, im really hesitant to drop the whole thing, and i only have one weekend to do all this so brake bleeding i dunno if i can include in the time alloted..
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Bleeding the rear brakes takes a whole of 10-15 minutes with the help of a friend. The only dangerous thing is your bleed screws might be siezed in the caliper, so try to open the bleed screws on the calipers before you disconnect any of the brake lines (should you choose to drop the subframe completely). With the subframe completely out of the car I was able to easily remove the subframe bushings. If the core was still bonded to the bushing I used a coping saw to cut the core out (cut through the two rubber ribs, then used a sawzall to cut through the metal sleeve in two spots and hammered the sleeve out, took about half an hour per bushing.
Quote:
Originally Posted by cirrusblau
Do you have a contingency plan for if the bushing core breaks and stays in the body?
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5/8" tap, 5/8" bolt, a piece of steel rod and a BFH 
Tap the piece stuck in the body from underside of carand insert bolt. Go into cabin with rod and BFH and start slamming. I had to pound both sides out on my car, and it took a good few minutes of hammering... be careful not to hit the rear window with the BFH
Last edited by Bullet Ride; 05-27-2010 at 01:47 PM.
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05-28-2010, 09:05 AM
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#20
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2nd Gear Member
Join Date: Apr 2006
Location: Waterloo/GTA
Posts: 105
Car: e30
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thanks for all the tips guys
Quote:
Originally Posted by cirrusblau
In that case, your method sounds good. Do you have a contingency plan for if the bushing core breaks and stays in the body? I'm unfamiliar with changing the subframe bushes with the 2" drop. I imagine it's less likely they break, but it's still something to consider. Shoot some penetrating lube on the SHCS (2 per side) that hold a plate under the bushings now to help insure they are free.
Rear springs are easy. Do you have a spring compressor for the fronts? Ball joint separator? Big pipe wrench for the strut collars?
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im gonna borrow those from partsource, and ya, what else do you think can go wrong so i can prepare
thanks
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05-28-2010, 11:40 PM
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#21
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2nd Gear Member
Join Date: Mar 2008
Location: GTA
Posts: 199
Car: 1987 325i
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Quote:
Originally Posted by Bullet Ride
Bleeding the rear brakes takes a whole of 10-15 minutes with the help of a friend. The only dangerous thing is your bleed screws might be siezed in the caliper, so try to open the bleed screws on the calipers before you disconnect any of the brake lines (should you choose to drop the subframe completely). With the subframe completely out of the car I was able to easily remove the subframe bushings. If the core was still bonded to the bushing I used a coping saw to cut the core out (cut through the two rubber ribs, then used a sawzall to cut through the metal sleeve in two spots and hammered the sleeve out, took about half an hour per bushing.
5/8" tap, 5/8" bolt, a piece of steel rod and a BFH 
Tap the piece stuck in the body from underside of carand insert bolt. Go into cabin with rod and BFH and start slamming. I had to pound both sides out on my car, and it took a good few minutes of hammering... be careful not to hit the rear window with the BFH 
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I just simply drilled a couple holes in the remaining material, stopping shy of the body, then used a chissel to break it the rest of the way through and it fell right out. Took all of 10 minutes per side  Wouldn't work if the subframe was in... at least not as easily.
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05-28-2010, 11:50 PM
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#22
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2nd Gear Member
Join Date: Mar 2008
Location: GTA
Posts: 199
Car: 1987 325i
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Quote:
Originally Posted by Berlin
thanks for all the tips guys
im gonna borrow those from partsource, and ya, what else do you think can go wrong so i can prepare
thanks
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Partsource is great - free tool rentals are amazing.
What else can go wrong? Well, you've already done dif, if I'm not mistaken, so that shouldn't be an issue. We've covered subframe (broken ends, stuck SHCS on the retaining plate). Front suspension is simple with the right tools, rear suspension, you might have to stand on the trailing arm to pop the spring, particularly if it's stock. If you've got the spring compressor for the front, you could use that too. All the fasteners should be big or unexposed and not rusty, aside from the 4 SHCS.
You'll need a way to hold the strut while you loosen the nut holding it to the bearing, or you might get lucky and have it come right off. Despite the temptation, I suggest you avoid impact tools here.
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05-31-2010, 11:54 AM
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#23
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2nd Gear Member
Join Date: Apr 2006
Location: Waterloo/GTA
Posts: 105
Car: e30
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Quote:
5/8" tap, 5/8" bolt, a piece of steel rod and a BFH
Tap the piece stuck in the body from underside of carand insert bolt. Go into cabin with rod and BFH and start slamming. I had to pound both sides out on my car, and it took a good few minutes of hammering... be careful not to hit the rear window with the BFH
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yes, a piece did break off and i wasted some time trying to get it out with the air chisel then i remembered the 5/8tap method which popped it out in 2 seconds flat thanks man
the air hammer came in handy for taking the knurled studs out though, no problems there.
the work is still in progress, had to make a custom tool for the bushings ill post a pic later when its all done...
thanks
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