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> 914 brake upgrade options
75porsche914
post Jul 21 2014, 07:57 PM
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Hi, would love some recommendations regarding upgrading my brakes w/o braking the bank so to speak.

I recently upgraded to a 911 master brake pump or is it know as a cylinder and stainless steel brake lines. Changes my brake fluid reservoir to a new OEM Porsche one so the front trunks looks nice and new.

So before I go rebuilding and making my current calipers all nice and shiny, what other options do I have to improve my braking performance?

Can I go 911 brake calipers w/o having to change my whole front suspension to 911 suspension?

I appreciate everyone's advice.

I will post pictures soon, my car has been a two year journey and quite a story to get her where she is today. Many ups and downs, and almost 100% restored, bigger bored 2.0 now 2.4, new interior, paint, konis, springs, stereo, the works... Originally 52,000 now 55,000 mile original car. 75 2.0 now with back dated bumpers and many other items, so I call it Zambezi green , although a 75 was known as Forrest green. Finally proud to drive her around town.

Been a hobby, passion, obsession and many reasons for past arguments regarding my income investments.

Thanks for your recommendations.

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Dave_Darling
post Jul 23 2014, 07:51 AM
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It's 25% more, BTW. also 20% less distance traveled by the pedal.

19^2 / 17^2 ~= 1.25

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race914
post Jul 23 2014, 09:41 AM
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QUOTE(Dave_Darling @ Jul 23 2014, 06:51 AM) *

It's 25% more, BTW. also 20% less distance traveled by the pedal.

19^2 / 17^2 ~= 1.25

--DD


Finally some actually facts!! Thanks Dave...

The 19mm is not a downgrade, and certainly not "lesser performing part"

I think the incorrectly perceived issue of "lesser performance" is due to the fact the 19mm requires more pedal pressure to achieve the same effective braking force (fluid displaced from the Master Cylinder to the Calipers) as compared to the 17mm. At the same time, the 19mm has shorter pedal travel than the 17mm. They can both apply the same pressure to the Calipers.

A good layman's analogy is Harbor Freight Floor Jacks. The basic model takes many 'easy' pumps of the handle to raise a 914 off the ground, while the 'racing' version takes 6 'hard' pumps. Sure the racing version handle is harder to push down, but they both can raise the car up. The racing version is not a downgrade or "lesser performing part".

It's Basic Fluid Mechanics. Same applies to Master Cylinders.

That being said, I also agree 'feel', and the ability to control brake pressure modulation is very important. And with that in mind, I'm in agreement and would not put a 23mm Master cylinder in a 914 with stock brake calipers.

I just don't agree that the 19mm is a downgrade or "lesser performing part" with stock 914 brake calipers, just because of the additional pedal pressure.


Now after all of this, back to the original topic

I agree with everyone else who states that the stock 914 brake system is very good, and performs very well. Also agree that if it is in good mechanical condition, and has fresh upgraded fluid such as ATE, Motul, etc, Good Pads such as Porterfields, and good tires, there might be no need to upgrade at all, especially if it is primarily a street car.

The only reason I upgraded my fronts to 911 M Calipers is because 25 minute run sessions at Laguna can really be hard on your brakes and despite good fluid, good pads, and adding cooling scoops, removing the splash shields, etc I could still easily overheat the 914 brakes to the point they would fade horribly. If I wasn't doing regular track days I probably never would have upgraded the stock 914 brakes.

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Posts in this topic
75porsche914   914 brake upgrade options   Jul 21 2014, 07:57 PM
mepstein   19mm reduces stopping power. It was used with the ...   Jul 21 2014, 08:19 PM
396   19mm reduces stopping power. It was used with the...   Jul 22 2014, 11:16 AM
mepstein   19mm reduces stopping power. It was used with th...   Jul 22 2014, 12:32 PM
race914   [quote name='396' post='2064592' date='Jul 22 201...   Jul 22 2014, 03:56 PM
mepstein   [quote name='396' post='2064592' date='Jul 22 20...   Jul 22 2014, 08:17 PM
bdstone914   Better pads is the best upgrade. Nothing wrong wi...   Jul 21 2014, 08:32 PM
ConeDodger   Better pads is the best upgrade. Nothing wrong w...   Jul 22 2014, 12:50 PM
ClayPerrine   On the front you have to change the struts if you ...   Jul 21 2014, 09:19 PM
Dave_Darling   Better tires. If you can lock up your brakes, the...   Jul 21 2014, 09:19 PM
Brian_Boss   If you can lock up your brakes, they have done ev...   Jul 23 2014, 03:20 PM
mgp4591   Braided stainless lines do look pretty but the goo...   Jul 21 2014, 09:31 PM
75porsche914   I totally appreciate everyone's experience and...   Jul 21 2014, 11:10 PM
swooshdave   I've never seen the braided line dismissed lik...   Jul 21 2014, 11:38 PM
Spoke   I've never seen the braided line dismissed li...   Jul 22 2014, 02:33 PM
ripper911   I think that it's because you can't see th...   Jul 22 2014, 05:25 AM
rick 918-S   Nothing wrong with new stainless lines. :agree: t...   Jul 22 2014, 08:11 AM
JawjaPorsche   I would contact http://www.pmbperformance.com/tee...   Jul 22 2014, 08:39 AM
race914   I'll add a BIG +1 on PMB Performance. Eric ca...   Jul 22 2014, 09:06 AM
brant   really good pads, like the R4S and good tires new ...   Jul 22 2014, 09:14 AM
infraredcalvin   Better pads is the best upgrade. Nothing wrong ...   Jul 22 2014, 01:50 PM
GeorgeRud   I think the best thing you can do for your brakes ...   Jul 22 2014, 01:59 PM
Eric_Shea   There hardly any difference between the 19 and the...   Jul 22 2014, 02:23 PM
Chris H.   Can't believe we're talking about braided ...   Jul 22 2014, 03:12 PM
brant   :beer3: hardly heartily.   Jul 22 2014, 10:17 PM
Eric_Shea   I actually think a 19 performs better on a stock T...   Jul 22 2014, 10:22 PM
mepstein   I actually think a 19 performs better on a stock ...   Jul 23 2014, 06:40 AM
Dave_Darling   It's 25% more, BTW. also 20% less distance tr...   Jul 23 2014, 07:51 AM
race914   It's 25% more, BTW. also 20% less distance t...   Jul 23 2014, 09:41 AM
Dave_Darling   However, Greg just (indirectly) pointed out the ma...   Jul 23 2014, 06:15 PM
Brian_Boss   However, Greg just (indirectly) pointed out the m...   Jul 24 2014, 10:54 AM
Eric_Shea   Like I said... way too much Internet yak, yak, yak...   Jul 24 2014, 09:15 AM
patssle   So to sum it up...if you're not tracking the c...   Jul 24 2014, 01:19 PM
ClayPerrine   So to sum it up...if you're not tracking the ...   Jul 24 2014, 01:50 PM
396   So to sum it up...if you're not tracking the...   Jul 24 2014, 09:48 PM
ClayPerrine   [quote name='ClayPerrine' post='2065506' date='Ju...   Jul 25 2014, 06:01 AM
brant   No need for vented rear rotors. Even on the track...   Jul 25 2014, 06:42 AM
OlymOwen   My first post. It’s to a nine year old thread. N...   Apr 22 2023, 10:56 PM


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