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  #1  
Old April 12th 2016, 15:03
flat flat is offline
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Boxster brakes on LP bug

I posted on TS because of picture hosting, but can attach here:

Quote:
Originally Posted by flat
Ive been doing this machining and others for over 15 years, so I figured I'd post on how I do it. I'm apprehensive in general due to the armchair experts, but lets see how this goes.

This setup is for boxster brakes on LP dropped spindle. The hub and caliper bracket are modified, but consumables (rotor, pad, caliper) are stock Porsche stuff, easy to find 10 years down the road. The spindles are modified for quality control but could revert back to drum brakes. The hubs are machined for regular bearings.

First up spindle check. Ive seen all kids of problems from tight/loose shafts to wrong threads machined (go figure). In this case the radius on shaft wasnt right and the bearing backstop off by more than a mm.






Heres other side:




Measure difference





Put on lathe to fix:









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Old April 12th 2016, 15:05
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Quote:
Originally Posted by flat
Next cut the inner bearing

Indicate both ways (axially and radially)





Measure bearing size



And cut to size

More on bracket in next post
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  #3  
Old April 12th 2016, 15:06
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Quote:
Originally Posted by flat
Flip the hub over, indicate and turn for outer bearing. I forgot to take pics of that.

Next is the caliper bracket; cut, chamfer for spindle radius, countersink for spindle bolts, tap for radial adapter:










Make radial bracket and test fit:





And thats about it. Cleanup, paint and assemble.
Hope that helps
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  #4  
Old April 13th 2016, 22:27
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wrenchnride247 wrenchnride247 is offline
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Good post Lanner! I'm working with a set of those spindles on a build right now. The first thing I did was clean up that ruff grease seal surface.
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  #5  
Old April 15th 2016, 11:22
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Quote:
Originally Posted by wrenchnride247 View Post
Good post Lanner! I'm working with a set of those spindles on a build right now. The first thing I did was clean up that ruff grease seal surface.
On the spindle? Yeah a polish helps. Post your machining pics please, what car is that for? I'll try and post more stuff and keep GL alive..
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Old April 16th 2016, 22:04
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wrenchnride247 wrenchnride247 is offline
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Ruff!



Polished up with emery cloth and finished with crocus cloth. VERY nervous with that hunk of steel spinning out there...only went 110rpm

It's not a conversion to Porsche brakes or anything, just stock '63 drums...not my car. A friend just wanted it lower in front.
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  #7  
Old April 20th 2016, 13:22
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Nice!
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  #8  
Old May 18th 2016, 02:00
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Thanks for the tutorial!

Jason
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  #9  
Old May 18th 2016, 22:17
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No worries.

If I ever get back home I'll post more stuff. I'm part of the evacuees from Fort McMurray..been out of our home since we escaped the fire May 3. Hope to be back to town early June...and hope even more to still have a home and shop standing....
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