while my motor is out

[benzboy]

my motor and trans is out of the car. a 73 911e. i replaced all vacuum lines and in the process of changing out the fuel lines too. i assume all the lines are 40 years old. i have a few questions while im in there.

1. i want to replace all brake lines. how hard of a job is this? i never changed brake lines. both the hard lines and rubber lines.

2. i would like to replace all suspension bushings too. i have read if the spring plate bushings arent installed right, they will squeak. how many rear bushings is there?

3 if i take the whole trailing arm and springplate offf as one piece, will my alignment be off?

4. i want to replace my rear wheel bearings too. i read a lot about the best way to pull and replace them. whats to best way? heat and freeze new bearings?

all of these seam pretty straight forward. i have books and have read a lot. i think i should be able to do all these myself. but would like to get thoughts from the "experts" on here

[zippy_gg]

1) I am only replacing the rubber brake lines at this point so I can't comment on the hard lines. However I highly recommend using the right type of wrench and be sure to soak in PB Blaster beforehand and let it soak.
2) If you use quality spring plate bushings, such the rubber ones from ER you should not get any squeaking. There are of bushings per spring plate. I also replaced the trailing arms, and again would recommend ER products. I went with the sealed monoball units but the rubber ones (they come with the aluminum inserts) would do quite well.
3)While I have not tried to remove the trailing arm and spring plate as a unit, I don't think it is possible; you may bent things out of shape...
4) Heat and a "Home Depot" special tool are your friends when removing the rear wheel bearings, and yes Freezing the bearings will help with reassembly.
I work very slowly and read a lot before every step since this is not my daily driver, and I have the luxury of a garage, but take your time and think, ask questions, and the act.
Good luck with your rehab project!

[wholio94112]

...when changing your bushings, you will be removing spring plates and control arms and even your trailing arms, you will definitely want an alignment done...most would recommend a corner balance as well...i don't care how many reference lines and torque values you record during disassembly, you will not duplicate your current settings with regards to your alignment - especially with new, turgid rubber bushings in place of the 40 year old ovals youre replacing...i am a mechanical idiot, but i have not been to a mechanic for the last two porsches i have had the pleasure of burning through...you are about to embark on a fairly straightforward journey...take your time, double-triple check everything you do before you move on, and use this forum and the wealth of help you can get from real gurus...

[zippy_gg]

Replacing your clutch cable while everything is out may be a good idea too!

[80-911SC]

also a good time to look at the engine sound pad ...

[benzboy]

i replaced the clutch cable as well, since im doing a clutch job too. sound pad was replaced. can the hard brake lines be bent by hand? i found a brake line kit from another porsche site. would this kit also include the brake line through the tunnel? how hard is it to change the tunnel line?

[80-911SC]

i would not try to bend the hard lines .. especially if your first time ... not easy ...

buy pre bent for your cars year

[Scott R]

I'll go the other route and suggest you make your own hard lines. You just copy the old ones. The only trick is you need a "double bubble" flare tool for the 911 and that's not as common of an item.

[sballard]

Good time to chase down oil leaks no matter how trivial while the engine is out. Also MFI pump pump belt if it applies.

[benzboy]

also fixing oil leak at mfi pump. im deciding to do a top end rebuild. not even sure if it needs a rebuild. anybody use neatrix susp. bushings? they seem to be a lot chaper then elaphant racing bushings, but i dont want to save a few bucks, if these arent any good