17mm vs 19mm Brake Master Cylinder, again! Options

[87m491]

With the prospect of incoming rotten tomatoes forefront, I wade in here looking for a little BTDT.
Background, just got the 74, 2.0 back on the road after a 7 year hiatus. Over the years,, I did fuel system, brake system (19mm master(ATE) /calipers (PMB rebuilt fronts, stock rears) /rotors/hoses) engine mechanicals and cosmetics.

I haven't driven the car during that time and I only had about 150 miles on it before it came off the road and memory ain't what it used to be.

I did the 19mm MC many years back because it was way less expensive than the 17 and the forum feedback seemed fine. I also have a mid 80's Carrera (with turbo brakes) against which many folks relate the 19mm MC pedal feel. I like a firm pedal and the 911 is pretty easily modulated, heavy but responsive.

Fast forward to this past week and some short shakedown runs. The 914 pedal is "right there" and noticeably firmer than the 911. But while being firmer, the braking is far from commensurate with pedal input. Yes, the 911 pedal is firm, but with the right effort, the car will slow/stop NOW. Been on the track with it no problem. On the 'teener, I feel like I am about to bend/break the pedal and the car seems to barely slow. No way I can lock up these brakes at any road speed, nor do I feel I could lose momentum in a hurried stop situation, even at in town speeds.

I'm wondering if I have missed something or is this type of pedal feel/action is "typical" of the swap? Shamefully, I honestly can't recall if I did pads, but the rotors are spotless and look like they're getting good pad contact but would love any pad advice as well.

[Eric_Shea]

We always bed Porterfields. We're their second largest retailer. And I've spoken with Porterfield about the pre-bed pad scenario. I asked how they pre-bed them and they simply state it's not needed. Basically, the friction numbers come in at a lower temperature. We don't necessarily agree that an "un-bedded pad" is "pre-bedded" but... therein lies what some call "heresay". It never hurts to bed your pads as there are other benefits that come along with it.

Bedding the pads seasons the rotors. Fact.
Bedding the pads breaks in the new caliper seals. Fact. and,
Bedding the pads decreases the stopping times... even on "pre-un-bedded" Porterfields.

We've never, ever glazed a pad. That's our "real world experience" not from the interwebs.