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73 412 brake upgrades????
Posted: Mon Jun 14, 2010 6:11 pm
by Kgb412.Thomas
i ahve a 73 412 wag let it sit for a while cuz of lost licence and now is all locked up and rusted drums/rotors what rotors drums will fit with what calipers or does any one make the oem parts..... new to the forums
Re: 73 412 brake upgrades????
Posted: Mon Jun 14, 2010 8:52 pm
by Bill K.
Welcome to the forums!
Fronts are same as Porsche 914 (42mm piston), still available, but $$. Can upgrade to BWM 320i calipers (48mm piston) also, but need spindle offset modification (?). Can upgrade to vented Porsche 911-M calipers (48mm piston), but need hub modification. I have pair of used '73 calipers in good shape from my daily driver for $50.
Rears are same as late Type 3, still available.
Re: 73 412 brake upgrades????
Posted: Tue Jun 15, 2010 1:20 am
by Piledriver
Welcome to the STF!
The drums/rotors/calipers you have will probably break free and/or clean up, and the calipers are easily rebuilt.
(The $50 offer is great tho if rebuildable)
I got a nice 69 Bug once for $400 since the "brakes were frozen"...
Dropping the clutch at ~5K cured that, drove it home.
(Expression on sellers face: Priceless)
If you have an automatic Do Not Try That. Big hammer and torch time.
(In fact, I'm not sure I'd try that in a T4 manual trans due to it being unobtanium)
USUALLY it's only the rears locked due to the pking brake being set (I've had the rears rust lock sitting a week at the airport in PDX)
...if the fronts are locked it's usually rust wedged behind the caliper piston seal.
Re: 73 412 brake upgrades????
Posted: Wed Jun 16, 2010 4:09 pm
by Kgb412.Thomas
thanks guys! i want to kepp it simple for know so i can drive it. i would eventually like to do upgrades similar to Bill (i love what you have done, very nice). i htink my MC may be toast to. is the 914 MC the same to. what about the rear brakes are they the same as 914.
Re: 73 412 brake upgrades????
Posted: Wed Jun 16, 2010 4:45 pm
by Bill K.
Nope, rears are late Type 3 drums.
MC is 411/412 only. Watch out, don't buy the 411/412 servo (power assisted) MC that is out there. It has the mounting flange on the end. The manual MC has the mounting flanges on the side - harder to find, but still some around. Search here for a lot of info on rebuilding them.
Re: 73 412 brake upgrades????
Posted: Wed Jun 16, 2010 5:22 pm
by perrib
There are several brake shops adveritised in Hemmings Motor news that resleeve and rebuild worn out master cylinders.