I have read up on this and it seems that the caliper and rotor were identical in the 73/74 412 and Porsche 914 1972->
Is this true? If so, great as the 914 ones seem more readily available in internet land.
Front Brakes for late 412
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kps70
- Posts: 77
- Joined: Tue Jan 16, 2007 2:00 pm
Front Brakes for late 412
Welding's nearly complete on my 412 sedan. Now sorting the front brakes. I sourced a NOS set of 412 calipers from Germany and NOS rotors/disks. However, I did not research and have ended up with the earlier type of disk/rotor. So, if anyone's interested, I have a brand new pair of early rotor/disks up for sale! I'm also wondering about the calipers. The new ones look identical to the ones on mine. Does anyone know the changes to the calipers that took place through the years/(411/412)models?
I have read up on this and it seems that the caliper and rotor were identical in the 73/74 412 and Porsche 914 1972->
Is this true? If so, great as the 914 ones seem more readily available in internet land.
I have read up on this and it seems that the caliper and rotor were identical in the 73/74 412 and Porsche 914 1972->
Is this true? If so, great as the 914 ones seem more readily available in internet land.
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kps70
- Posts: 77
- Joined: Tue Jan 16, 2007 2:00 pm
The part number 411407075B matches the Porsche part number. The rotor/disks are in stock at £44 each incl tax.
Looking good!
Website: http://partsforporsche.co.uk/osc/gasket ... 49fa09b0ad
I've ordered them so we'll see if they are indeed the same.
Kieron
Looking good!
Website: http://partsforporsche.co.uk/osc/gasket ... 49fa09b0ad
I've ordered them so we'll see if they are indeed the same.
Kieron
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wshawn
- Posts: 209
- Joined: Thu Dec 27, 2007 6:36 am
Had the same issues with mine last year regarding disc/rotors...
I was very lucky and a Club member just down the road had a pair of NoS ones sat on a shelf in his garage for years he let me have cheap. I think the changes to the calipers are to do with the offset of the later disc and the thickness of the pads increasing by 3 or 4mm each.
As for the disc the early disc they will fit Type 3s so should be easy enough to sell on.
I was very lucky and a Club member just down the road had a pair of NoS ones sat on a shelf in his garage for years he let me have cheap. I think the changes to the calipers are to do with the offset of the later disc and the thickness of the pads increasing by 3 or 4mm each.
As for the disc the early disc they will fit Type 3s so should be easy enough to sell on.
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raygreenwood
- Posts: 11912
- Joined: Wed Jan 22, 2003 12:01 am
Be aware....you cannot swap calipers or rotors early to late....unless you have the correct steering knuckle. You can swap 412 or late 914 calipers and rotors to a 411...if you have the 412 steering knuckle to go with it.
They were a set.
The 412 steering knuckle bolts right up to the 411....no changes necessary. That will allow the use of the 412 rotor ...which allows the use of teh later 412 caliper with the thicker pad.
The difference...is the fact that the 411 rotor was not only thinner in surface area....its internal recesses for the bearings were in a different location...so it uses a differnt spindle...hence different steering knuckle.
You can't just use a 412 steering knuckle...and stay with 411 rotors...and use 412 calipers. The 411 rotor will not fit on the 412 spindle and have teh rotor surface be in the right place. You also cannot....in a pinch...use 411 rotor and caliper on 412 steering knuckle and spindle.
If you havea 411....you will have to stay with calipers, pads and rotors listed for august of 72 and Earlier....unless you have 412 steering knuckles to bolt on. Likewise...if you have a 412....you must use rotors, calipers and pads....listed for AFTER August of 1972....unless you have a set of early 411 steering knuckles to bolt onto your 412.
I have done that last one for a short period of time. I could not source new calipers for my 412 in time to get it on the road...so I installed a set of 411 steering knuckles, rotors and calipers. When the 412 parts came in stock...i swapped the whole set again.
Is all of this clear. these are two completely different sets...based around steering knuckle differences. The cut-off for both 411/412 and 914....is up to August of 1972 and after August of 1972. Ray
They were a set.
The 412 steering knuckle bolts right up to the 411....no changes necessary. That will allow the use of the 412 rotor ...which allows the use of teh later 412 caliper with the thicker pad.
The difference...is the fact that the 411 rotor was not only thinner in surface area....its internal recesses for the bearings were in a different location...so it uses a differnt spindle...hence different steering knuckle.
You can't just use a 412 steering knuckle...and stay with 411 rotors...and use 412 calipers. The 411 rotor will not fit on the 412 spindle and have teh rotor surface be in the right place. You also cannot....in a pinch...use 411 rotor and caliper on 412 steering knuckle and spindle.
If you havea 411....you will have to stay with calipers, pads and rotors listed for august of 72 and Earlier....unless you have 412 steering knuckles to bolt on. Likewise...if you have a 412....you must use rotors, calipers and pads....listed for AFTER August of 1972....unless you have a set of early 411 steering knuckles to bolt onto your 412.
I have done that last one for a short period of time. I could not source new calipers for my 412 in time to get it on the road...so I installed a set of 411 steering knuckles, rotors and calipers. When the 412 parts came in stock...i swapped the whole set again.
Is all of this clear. these are two completely different sets...based around steering knuckle differences. The cut-off for both 411/412 and 914....is up to August of 1972 and after August of 1972. Ray
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kps70
- Posts: 77
- Joined: Tue Jan 16, 2007 2:00 pm
thanks Ray,
I realised all of this after bringing up the 411 rotor to my 412 only to find that the caliper did not fit, as you said! It's out by about 5mm because of where the earlier rotor sits on the shaft. I have a pair of 914 rotors making their way to me in the post now! My main question was about the calipers. The ones I have seem to be exactly the same as the ones on my (1974) 412 - the pads that came with them are very thick so fingers crossed it all fits next week.
Kieron
I realised all of this after bringing up the 411 rotor to my 412 only to find that the caliper did not fit, as you said! It's out by about 5mm because of where the earlier rotor sits on the shaft. I have a pair of 914 rotors making their way to me in the post now! My main question was about the calipers. The ones I have seem to be exactly the same as the ones on my (1974) 412 - the pads that came with them are very thick so fingers crossed it all fits next week.
Kieron
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raygreenwood
- Posts: 11912
- Joined: Wed Jan 22, 2003 12:01 am