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> Brake Upgrades for a 4 lug, what's available
76-914
post Oct 30 2016, 08:46 AM
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Looking to upgrade my present brake system but I want to keep it 4 lug AND keep the parking brake. Not to mention, staying out of the Poor House at the same time. I'm not opposed to moving up to a larger MC. Is there such an animal? TIA, Kent (IMG:style_emoticons/default/beerchug.gif)
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zach914v8
post Jan 20 2017, 09:46 AM
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I think for 90% of the 914's out there, the stock system working correctly is great. It is us, the 10% that have scary fast cars that need more. Its a strange feeling when your at the end of a drag strip trying to slow down from 115 mph and see the end of the road come up fast and your car wont stop. When you get out of the car and see you rotors glowing, you know that you have maxed out your brakes.
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stugray
post Jan 20 2017, 11:39 PM
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QUOTE(zach914v8 @ Jan 20 2017, 08:46 AM) *

I think for 90% of the 914's out there, the stock system working correctly is great. It is us, the 10% that have scary fast cars that need more. Its a strange feeling when your at the end of a drag strip trying to slow down from 115 mph and see the end of the road come up fast and your car wont stop. When you get out of the car and see you rotors glowing, you know that you have maxed out your brakes.


If you are maxing out your brakes from one drag racing pass you are doing something seriously wrong.
That would barely give them a workout compared to how I abuse my stock brakes on the track.

I brake about as hard as I can from 110 MPH (with 215 Hoosiers) on just one of 10 corners at the track, and do that for 20 minutes without stopping.
I have only detected brake fade a few times
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jmitro
post Feb 21 2017, 10:56 AM
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bumping this thread as I'm contemplating my options for brakes (vented rotors??) on the car for occasional track use. Car will be close to stock weight, I weigh 175lb, and the engine will be 120hp.

I have brand new solid rotors with PMB 5lug conversion, rebuilt calipers, new pads, lines, proportioning valve, 19mm master cylinder.

QUOTE(stugray @ Jan 20 2017, 11:39 PM) *

I brake about as hard as I can from 110 MPH (with 215 Hoosiers) on just one of 10 corners at the track, and do that for 20 minutes without stopping.
I have only detected brake fade a few times


based on your experience, I'm thinking my desire for vented rotors is probably not necessary?

thoughts?

I'm using my stock Boge strut bodies; if I want vented rotors using Porsche calipers and 5lug, I'm assuming the only option is to convert to 911 front struts?
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Racer
post Feb 21 2017, 05:34 PM
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QUOTE(jmitro @ Feb 21 2017, 11:56 AM) *

bumping this thread as I'm contemplating my options for brakes (vented rotors??) on the car for occasional track use. Car will be close to stock weight, I weigh 175lb, and the engine will be 120hp.

I have brand new solid rotors with PMB 5lug conversion, rebuilt calipers, new pads, lines, proportioning valve, 19mm master cylinder.

QUOTE(stugray @ Jan 20 2017, 11:39 PM) *

I brake about as hard as I can from 110 MPH (with 215 Hoosiers) on just one of 10 corners at the track, and do that for 20 minutes without stopping.
I have only detected brake fade a few times


based on your experience, I'm thinking my desire for vented rotors is probably not necessary?

thoughts?

I'm using my stock Boge strut bodies; if I want vented rotors using Porsche calipers and 5lug, I'm assuming the only option is to convert to 911 front struts?



Occasional track use will come down to driver skill and the tracks involved. Going back, I had a 2056/4 with 4 lug stock brakes. Like most track diving geniuses, I knew the only way to go faster was to improve the car (since the drover was already perfect ; ) ) .. So after 2 years of saving my pennies I upgraded to 911 front end (3.2 Carrera brakes) and never had an ounce of brake fade thereafter. For me, I was running 4-5 events (10-14 track days/year).

Yes, the 5 bolt 911 brakes are the solution, hence the factory using them on the 914/6.

The stock brakes are fine for a stock car and can likely handle up to 110-120hp. Track driving is about HEAT management. If you want to avoid the $$ to change to 911 brakes, do what others have done:

1) Quality lines
2) Quality fluid
3) Great brake pads
4) AIR - Get lots of air to the front brakes
5) Learn to drive better (brake less, carry more speed).
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Posts in this topic
76-914   Brake Upgrades for a 4 lug   Oct 30 2016, 08:46 AM
bdstone914   Looking to upgrade my present brake system but I ...   Oct 30 2016, 08:59 AM
jeffdon   Looking to upgrade my present brake system but I...   Oct 31 2016, 10:55 AM
1stworks   Looking to upgrade my present brake system but I...   Oct 31 2016, 05:50 PM
Dave_Darling   What is wrong with your current brakes that you ar...   Oct 30 2016, 06:05 PM
tomh   What is wrong with your current brakes that you a...   Jan 20 2017, 09:15 AM
76-914   [quote name='76-914' post='2417594' date='Oc...   Oct 31 2016, 08:09 AM
Dave_Darling   Why you ask? On a back road, I scared the shit out...   Nov 1 2016, 12:32 AM
stugray   I often laugh when people want to upgrade the stoc...   Oct 31 2016, 12:09 PM
Racer   Someone once told me, "If you can lock the t...   Oct 31 2016, 08:07 PM
draganc   Someone once told me, "If you can lock the ...   Oct 31 2016, 09:09 PM
Elliot Cannon   Someone once told me, "If you can lock the...   Oct 31 2016, 10:29 PM
draganc   [quote name='draganc' post='2418226' date='Oct 31...   Nov 2 2016, 08:17 AM
Elliot Cannon   [quote name='draganc' post='2418226' date='Oct 3...   Nov 2 2016, 11:22 AM
ClayPerrine   Remember, "it is better to look good than to...   Nov 2 2016, 11:29 AM
914_teener   Someone once told me, "If you can lock the ...   Nov 1 2016, 12:37 PM
Dave_Darling   I would agree that locking the tires up indicates...   Nov 1 2016, 04:16 PM
ThePaintedMan   Bruce, count me in. I am worried, since I track th...   Nov 1 2016, 07:17 AM
mbseto   ...On a back road, I scared the shit out of myse...   Nov 1 2016, 07:23 AM
Vacca Rabite   100% serious. Have Eric rebuild your stock calipe...   Nov 1 2016, 07:38 AM
zach914v8   Bruce put me on the list please.   Nov 1 2016, 09:00 AM
StratPlayer   I'm running the BMW 320i calipers up front, ha...   Nov 1 2016, 10:15 AM
Elliot Cannon   I'm running the BMW 320i calipers up front, h...   Nov 1 2016, 11:41 AM
ClayPerrine   On Betty's car we have the stock 4 lug brakes....   Nov 1 2016, 12:49 PM
76-914   Why you ask? On a back road, I scared the shit ou...   Nov 1 2016, 05:15 PM
Elliot Cannon   [quote name='Dave_Darling' post='2418277' date='O...   Nov 1 2016, 11:06 PM
914forme   :agree: I think you need Subaru brakes. :rotf...   Nov 2 2016, 12:43 PM
rhodyguy   <_<   Nov 1 2016, 05:52 PM
stugray   Sounds like your flex-line liners are swollen. Th...   Nov 1 2016, 06:51 PM
76-914   Sounds like your flex-line liners are swollen. T...   Nov 2 2016, 07:54 AM
Mueller   John Rogers had a set of the original billet hubs ...   Nov 2 2016, 01:28 PM
Korijo914   I had a ride, can't remember with whom, went a...   Nov 2 2016, 02:48 PM
Eric_Shea   Clay. Bed her pads again. http://www.pmbperforma...   Nov 2 2016, 07:00 PM
zach914v8   I bumped this to see if there was any progress in ...   Jan 18 2017, 02:32 PM
BigFour1973   I bumped this to see if there was any progress in...   Jan 18 2017, 05:15 PM
stugray   I bumped this to see if there was any progress in...   Jan 18 2017, 09:27 PM
zach914v8   [quote name='zach914v8' post='2445262' date='Jan ...   Jan 19 2017, 07:45 AM
Mueller   kerscher beetle brake rotor The problem with get...   Jan 19 2017, 03:40 PM
zach914v8   Mueller, old pal... Its like deja vu with you me a...   Jan 19 2017, 04:32 PM
Mueller   Mueller, old pal... Its like deja vu with you me ...   Jan 19 2017, 06:11 PM
zach914v8   Hey Mueller, you said Bruce is selling them in the...   Jan 19 2017, 04:55 PM
zach914v8   PM'd Bruce, his hubs are still in development....   Jan 19 2017, 07:39 PM
bdstone914   Some progress made. First samples had issues due ...   Jan 19 2017, 11:25 PM
anderssj   . . . BMW 320i calipers modified for use with ven...   Jan 21 2017, 07:14 AM
bdstone914   . . . BMW 320i calipers modified for use with ve...   Jan 21 2017, 07:40 AM
zach914v8   I think for 90% of the 914's out there, the st...   Jan 20 2017, 09:46 AM
stugray   I think for 90% of the 914's out there, the s...   Jan 20 2017, 11:39 PM
zach914v8   [quote name='zach914v8' post='2445968' date='Jan ...   Jan 21 2017, 06:26 AM
stugray   [quote name='zach914v8' post='2445968' date='Jan...   Jan 21 2017, 11:42 AM
zach914v8   [quote name='zach914v8' post='2446353' date='Jan ...   Jan 21 2017, 12:08 PM
stugray   [quote name='zach914v8' post='2446353' date='Jan...   Jan 21 2017, 12:13 PM
zach914v8   [quote name='zach914v8' post='2446448' date='Jan ...   Jan 21 2017, 12:27 PM
stugray   Wow, that is good to know. I guess I need to fig...   Jan 21 2017, 12:36 PM
zach914v8   Wow, that is good to know. I guess I need to fi...   Jan 21 2017, 12:40 PM
jmitro   bumping this thread as I'm contemplating my op...   Feb 21 2017, 10:56 AM
stugray   bumping this thread as I'm contemplating my o...   Feb 21 2017, 11:08 AM
jd74914   I have heard many horror stories about vented rot...   Feb 21 2017, 11:33 AM
mepstein   I have heard many horror stories about vented ro...   Feb 21 2017, 11:39 AM
stugray   I have heard many horror stories about vented ro...   Feb 21 2017, 05:14 PM
Racer   bumping this thread as I'm contemplating my o...   Feb 21 2017, 05:34 PM
mepstein   I wouldn't have the patience you guys do. If I...   Jan 20 2017, 02:31 PM
Mueller   The original intent of the 4 lug disc brake kit wa...   Jan 21 2017, 01:27 PM
stugray   The original intent of the 4 lug disc brake kit w...   Jan 22 2017, 01:23 PM
Mueller   The original intent of the 4 lug disc brake kit ...   Jan 22 2017, 01:31 PM
jmitro   true. do you use brake cooling ducting?   Feb 21 2017, 11:15 AM


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