we havent looked at a 4cyl strut....

the ears must be cut to clear the pads

here are more facts about the swap of calipers vs A calipers.

http://members.rennlist.com/sjanes/brakes.htm

What do Boxster calipers usually run for a set of 4?

Also, when do we see pics for how you're modifiying the rear trailing arms to mount these?

rich johnson makes a simple bolt on adapter for the rear.
You can also mill some yourself if you are so inclined.

Boxster calipers usually run about 300 per axle... give or take.... on ebay.

Rich's fine work:

Click to view attachment

He repainted the calipers for me.

What stopped you from using Boxster S calipers? Size? Cost?

If you're refering to my earlier plans, they would have fit in my 18's and I already had a pair. I didn't want to focus my time on prototyping them and Rich has proven adapters so I sold them.

If you're refering to use with 15", they are larger and less available so yes size and cost are a factor.

How about an update?
Any idea of cost?
Would it be possible/easier to modify an existing 3.5" adapter to work on a 3" strut?

They stop on a dime and give ya change

cost? market rate on a PAIR of calipers is around 300 bucks
Machining time? Ask craig.... a few sixpacks and lots of time on the bridegport.

You cannot use a bolt on adapter, ad the ears of the strut interfere with the pad. THUS the ears were trimmed as you saw.

I am sure you could use a way bigger rotor, and make a bolt on adapter, requiring 16" wheels or larger. Try a 944 turbo rotor for that.

Nice Aaron.

WOW Aaron had shoes on ......

Boy do they work. We got them mounted and went for a spin. Got down the street
a little bit and Aaron gave them a firm petal and holy sh*t they are powerful with no
lock up. This was with the stock rear calipers. I can imagine how it will be with the
boxster rear calipers installed.
Here is the rear mocked up. Just have to install a 911 e-brake 1st

Click to view attachment

Oh the rears are a lot easier. They just require a aluminium adaptor that bolts
to the stock mounts

Cool, cool, cool!

Click to view attachment

The brake line fittings on the caliper (Banjo) are they stock boxster? I need a set for a 993 brake conversion for my rear calipers. It is tight between the caliper and trailing arm. Those would be exactly what I need instead of trying to make a tight bend with a steel brake line.

Thanks! great thread

The banjo fitting is from a 911 M caliper

I have several sets 0f 911 M calipers, two 911 front suspension setups and none have banjo fitings.

Thanks,
Ken

I take it all back, I have A calipers 3.5". I always get them confused.

Thanks,
Ken

So did you guys just post these on Ebay for sale?...daveyboy

nope..... alot of work.
with these pictures, and a set of boxster calipers + a mill- someone could recreate these pretty easily. Just takes some time. I'm sure we could even supply some dimensions if someone wanted to make some.


there are adapters out there already for putting them on 3.5" struts..... just not 3" struts.