Princess Caliper replacement?

So,

Chrysler Sunbeam. Road use.

Fitting an AJ30 3.0 V6.

Normally the car would have P14 callipers. The Sunbeam Lotus had M16.

I am using 505GTI discs, these were used on my race car, the Avenger Tiger, these are 265mm and fit the Princess calliper perfectly, the Princess Callipers eventually split and i then fitted AP Forest Callipers, these were never ideal as they were second hand and the mounting lugs had been modified before i got them. The AP lugs started to fail so i replaced them with AP4567 Callipers but i increased the size of the disc to 276mm from a 206GTI.

This leaves the 265mm free and able to be used on the Sunbeam, sadly the set sets of callipers i have that fit them are scrap, hence my question.

Hi Nev.

I'm in the midst of doing a lot of work on my Avenger currently. For the brakes I have used Peugeot 406 V6 coupe (Brembo) calipers up front. They are aluminium 4 pots, bolt straight onto the Avenger/Sunbeam strut, and weight much, much less than the Princess calipers. They cost about the same.

The best disc I could find after scouring the catalogues is also from a Peugeot 406 (not the V6). You need the 283mm versions. They will need machining down to 269/270mm, and the 4 mounting holes will need drilling along with a tiny increase in centrebore diameter. You'll then need to use 6mm washers to mount the caliper so it centralises correctly.

You'll also need to run a 14" wheel, as I think 13" will catch.

I have a few pictures if you like.

If that's the case make sure you get the right sized pistons with whatever calipers you buy; they vary even in the model ranges.

Peugeot 406 ones aren't miles away from the Princess calipers and will be lighter. You may get a slightly longer pedal however but improved braking.

Just to clarify a few things:

1) You had P14s and standard
2) When it became a race car you went to 505 GTi discs on Princess calipers but with the same master cylinder. If that is the case did your pedal travel increase quite a bit? If so, did your braking power go up alot in terms of when the pads hit the disc as well as fade resistance?

If you are looking for the same amount of braking power definitely stay with the same piston size (38mm in your case). If you can live with a little less braking power but a firmer brake pedal I'd then consider going slightly smaller on the piston size.

ChasR,

The time line of the brakes was not quite like that as the car already had M16 as replacement for the P14 when it was a road car and i had moved to a bias pedal assembly after i fitted the Princess callipers but fitted rear discs. The standard Estate M/C was more than adequate for travel and feel prior to the bias set up. On the Sunbeam i will use another Estate M/C or 22mm depending.

Interestingly, the biggest difference to the pedal came from fitting Pagid pads, RS-4 i think, i had tried various EBC and found them to be awful for feel.


Jonsey,

AP do one? As you say maybe a bit pricey. I had searched to see if there was any review of the various Hi-SPec and Wilwood callipers but i wasn't that successful.

Nev

Here they are....

IMG_20171205_143906 by Chris Witkowski, on Flickr

IMG_20171205_143902 by Chris Witkowski, on Flickr