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> Boxster Calipers, got them installed today!
SirAndy
post Feb 27 2012, 01:12 AM
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About time too as my Carrera brake pads were down to the metal.

The idea was simple, get rid of the Carrera Calipers and mount Boxster Calipers all around using the mounting adapters from Rich Johnson.


Of course, nothing ever goes as planned: (IMG:style_emoticons/default/headbang.gif)

First, i failed to read Rich's instructions that clearly state that you have to use a 20mm 911 SC rear rotor.

Well, i have 24mm Carrera rear rotors. The Boxster Calipers had to be machined (2mm off each of the brake pad pins) and the adapters had to be milled to center the Boxster Calipers over the wider rotors.
(IMG:style_emoticons/default/smash.gif)

Then, after everything was bolted together, i recalled reading that the hard brake lines may not be long enough.
And sure enough (of course) the front brake lines were about 1" too short. Arrghhh.
(IMG:style_emoticons/default/rolleyes.gif)

McMark came to the rescue and we made two new lines. (IMG:style_emoticons/default/thumb3d.gif)

In the rear, i used banjo fittings on the Calipers (Thanks to Eric Shea for those!) and the rear brakelines were no problem.

Mark and i then bled the brakes. I was still getting some air in the front, but it was already 9pm so we decided to call it a night and i drove it home (40+ miles). The brakes actually felt fine, they seem to work great.
I'll go back to the OC shop next weekend and we'll bleed them again.
(IMG:style_emoticons/default/driving.gif)


And now for the pitchers:
(IMG:style_emoticons/default/beer3.gif)
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jim_hoyland
post May 31 2012, 08:13 AM
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Get that VIN ?
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I have not mounted those adapters. They are in a drawer.... (IMG:style_emoticons/default/smile.gif)
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Luke M
post Jul 9 2012, 06:47 AM
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I have the same setup as Andy but I installed the early 911 e-brakes on the rear.
It wasn't too bad had to measure alot to get things just right with the lever mounts.
I also had to make a small cable to attach to the 914 e brake cable.
I took a look at my caliper pistons like Aaron brought up . The rear calipers bolt right up ( small piston to the top ) as for the fronts they need to be flipped ( right now larger piston is on top ) .


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CptTripps
post Aug 30 2013, 01:28 PM
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So here I go digging up an old thread, and digging into minutia.

I know that the calipers that start with 996 are newer than 986, but does anyone have an idea on the next three numbers?

Rich said to stay away from the .352. calipers but I can't for the life of me see a difference when I have them in my hand. I'm on the hunt for:

986/996.351.421
986/996.351.422
986/996.351.424
986/996.351.425

Everywhere I turn, I'm finding sets that have 1 or 2 .352. calipers in the mix. Can they really be that different?
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Luke M
post Aug 30 2013, 04:00 PM
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I just checked my calipers and this is what I have for #'s.
Fronts are : 986 351 421 & 986 351 422
Rears are : 996 352 421 & 996 352 442

Why stay away from the .352 # ?

I have the standard Boxster calipers but there's also a Boxster S calipers which is different from what I hear.
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CptTripps
post Aug 30 2013, 05:15 PM
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I think you may have a set of fronts on the rear...
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Luke M
post Aug 30 2013, 05:38 PM
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From the Pelican site.
http://www.pelicanparts.com/catalog/shopca..._BRKprf_pg1.htm

The part numbers for the Boxster calipers required for this kit:

Front left: 986-351-421-03
Front right: 986-351-422-03
Rear left: 986-352-423-01
Rear right: 986-352-424-01

The part numbers for the brake rotors required for this kit:

Front Carrera: 911-351-041-22
Rear 911SC: 901-352-041-14

The part numbers for the brake pads required for this kit:

Front: 986-351-939-15
Rear: 986-352-939-10
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Jeff Hail
post Aug 30 2013, 06:01 PM
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QUOTE(Luke M @ Aug 30 2013, 04:38 PM) *

From the Pelican site.
http://www.pelicanparts.com/catalog/shopca..._BRKprf_pg1.htm

The part numbers for the Boxster calipers required for this kit:

Front left: 986-351-421-03
Front right: 986-351-422-03
Rear left: 986-352-423-01
Rear right: 986-352-424-01

The part numbers for the brake rotors required for this kit:

Front Carrera: 911-351-041-22
Rear 911SC: 901-352-041-14

The part numbers for the brake pads required for this kit:

Front: 986-351-939-15
Rear: 986-352-939-10



Yes- Those are the correct PN's for the calipers you should be using.









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Jeff Hail
post Aug 30 2013, 06:10 PM
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and pads




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CptTripps
post Aug 30 2013, 07:08 PM
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Hmmm...

I've got another set on the way. So I'll have to see what the part numbers are when they arrive. I KNOW the last set was wrong. (They shipped 3 rears and 1 front.)

Thanks gang.
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Bates
post May 8 2015, 04:47 AM
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Will the Boxster calipers fit under 15" Fuchs?
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SirAndy
post May 8 2015, 10:23 AM
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QUOTE(Ecke Liebhaber @ May 8 2015, 03:47 AM) *
Will the Boxster calipers fit under 15" Fuchs?

They should, i run them under 15" cookie cutters ...
(IMG:style_emoticons/default/idea.gif)
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ClayPerrine
post May 12 2015, 09:12 PM
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QUOTE(SirAndy @ May 8 2015, 11:23 AM) *

QUOTE(Ecke Liebhaber @ May 8 2015, 03:47 AM) *
Will the Boxster calipers fit under 15" Fuchs?

They should, i run them under 15" cookie cutters ...
(IMG:style_emoticons/default/idea.gif)


Don't try to run one of the collapsible spares with the Boxster calipers. The offset is wrong and the caliper locks against the wheel (BTDT)

I bought a Boxster spare rim so I don't have to worry about it.
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SirAndy
post May 13 2015, 10:57 AM
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QUOTE(ClayPerrine @ May 12 2015, 08:12 PM) *
QUOTE(SirAndy @ May 8 2015, 11:23 AM) *
QUOTE(Ecke Liebhaber @ May 8 2015, 03:47 AM) *
Will the Boxster calipers fit under 15" Fuchs?

They should, i run them under 15" cookie cutters ...
(IMG:style_emoticons/default/idea.gif)


Don't try to run one of the collapsible spares with the Boxster calipers. The offset is wrong and the caliper locks against the wheel (BTDT)

I bought a Boxster spare rim so I don't have to worry about it.

I got a full size 7" cookie cutter as a spare wheel, so no problems there.
(IMG:style_emoticons/default/smile.gif)
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madmax914
post May 13 2015, 03:13 PM
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Andy, can you pass on Rick Johnson's information, his adapters look so much "beefier" than the other adapters I've seen.
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GermermanCarGuy
post May 13 2015, 03:53 PM
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QUOTE(madmax914 @ May 13 2015, 03:13 PM) *

Andy, can you pass on Rick Johnson's information, his adapters look so much "beefier" than the other adapters I've seen.


(IMG:style_emoticons/default/agree.gif) Better than what I've been trying to work out. If he's making sets, I'd be in for some.

Rob
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SirAndy
post May 13 2015, 05:46 PM
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QUOTE(madmax914 @ May 13 2015, 02:13 PM) *
Andy, can you pass on Rick Johnson's information, his adapters look so much "beefier" than the other adapters I've seen.


You can find his contact info here:
http://www.914world.com/bbs2/index.php?showtopic=4319

Or send him a PM: a914guy
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amallagh
post Mar 17 2019, 06:58 PM
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What happens if you use the 996 part number rear calipers (still non S) ?
i.e. part numbers 996 352 421 & 996 352 422, (rather than 986-352-423-01 & 986-352-424-01 as stated below) ?

I see Luke asked this question way back then but I don't see an answer. ( I have some of these 996 part number rear calipers and need to know if I can use the adaptors and whether to use SC 20mm rotors or 24mm Carrera ones on the rear.
Regards
Andrew


QUOTE(Luke M @ Aug 30 2013, 11:38 PM) *

From the Pelican site.
http://www.pelicanparts.com/catalog/shopca..._BRKprf_pg1.htm

The part numbers for the Boxster calipers required for this kit:

Front left: 986-351-421-03
Front right: 986-351-422-03
Rear left: 986-352-423-01
Rear right: 986-352-424-01

The part numbers for the brake rotors required for this kit:

Front Carrera: 911-351-041-22
Rear 911SC: 901-352-041-14

The part numbers for the brake pads required for this kit:

Front: 986-351-939-15
Rear: 986-352-939-10
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Retroracer
post Mar 17 2019, 07:51 PM
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Andy - did you flip the link lines and the bleeders on the front brakes so that the larger cylinder is at the bottom? Recall that on the Boxster the calipers are the other side of the strut (inboard).

I've seen some expensive 911 builds where people have forgotten (or were unaware) of this. Not sure it makes a huge difference to stopping power, probably just uneven pad wear....

Anyway,

- Tony

PS. Looking back through the thread, I see the issue has been brought up already; oops.
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Retroracer
post Mar 17 2019, 07:53 PM
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QUOTE(Ecke Liebhaber @ May 8 2015, 03:47 AM) *

Will the Boxster calipers fit under 15" Fuchs?



Yes on the fronts. Running 15" fake Fuchs with no issues,

- Tony
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roblav1
post Nov 1 2019, 08:01 PM
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I just put this setup on my car yesterday:

- Carrera front rotors / Boxster front calipers
- SC vented rear rotors / Boxster rear calipers

The front calipers are swapped left to right and vv.

7X15 and 8X15 Fuchs easily fit.

Someone mentioned bolts not mounted in shear... all are mounted in shear, yes.

I set up the rear E-Brake with 69-73 type 911 shoes. Cables will run to the bottom, not through the trailing arm nor with a lever mechanism. I welded parking brake brackets in a new location. This alteration was easy.

Anyway, I highly recommend this setup.
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