Metal Brake Lines

hvangeel

hvangeel

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Looking for a winter project I noticed that there are quite a few metal brake lines on the market. I know that I should get a DoT approved set but I am still wondering if there are any differences. Any recommendations? Any ones with known problems/failures?
 
hvangeel said:
Looking for a winter project I noticed that there are quite a few metal brake lines on the market. I know that I should get a DoT approved set but I am still wondering if there are any differences. Any recommendations? Any ones with known problems/failures?
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Goodridge is probably the biggest supplier of DOT approved braided stainless steel lines, and yes, the make a considerable difference in how firm the brakes feel. These type lines are mandated is several forms of racing, and I have never heard of any failing in over 40 years of competition......
 
Thanks JFP. So it is worth to spend the extra money and go for the most expensive ones...?
 
hvangeel said:
Thanks JFP. So it is worth to spend the extra money and go for the most expensive ones...?
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Shop around, I've always found Goodridge to be competitively priced. What I would not do is use some unknown, cheap crap off of flea bay; after all, it is your brakes and potentially your life riding on them……….
 
Docdanracy said:
and what exactly is wrong with stock rubber lines?:rolleyes:
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I am just really paranoid about brake pedal feel and travel. Have been using Motul RBF600 for a couple of years now and still change it before and after every track-weekend. So I guess metal brake lines and bleeding the clutch are the next step.
 
maybe you are over braking...I found the braking in my '99 to be just great....no fade.;)
 

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sometime it is how long you stay on the brake...and you may be braking in areas where you really don't need more than a tap...just to set the front end.

After almost 20 years of instructing with GGR this is one of the things that is the hardest for folks that are newer to track driving...
when they start the are frying the brakes and after several years and lots on instruction, they find that their brakes last much better because they are using them less or in a better more efficient way.:)

what pads are you using?
 
What other maintence should we be doing with our Brembo brake calipers? Should we be cleaning the pistons in the calipers every so often or just checking to make sure there is no tearing in the rubber boots?
 
piston seals eventually need replacement

The piston seals eventually need to be replaced. I'm not sure exactly what constitutes a bad situation or what damage it causes ... perhaps too much dirt and dust getting into the piston and causing scoring. With the brake pads removed you can see if the seals are cracked or torn.

Anyway, you can get the kit for not very much and replace them yourself. If I recall they are just a friction fit, so no tools required (once you have the caliper and rotor removed), but I found it a little bit frustrating to get them properly seated and to stay in place correctly. I think they actually call these "piston dust covers". There are inner seals, too, but those are not DIY, at least for me.

Just for future reference, here are three links to relevant part info. The exact parts depend on the model/year and front/rear, because the piston sizes vary. Each caliper has 2 larger pistons and 2 smaller pistons.
1. This UK parts site page has two good pictures of the outer seals I am talking about.
http://www.design911.co.uk/fu/pt66_484_-cma81-cmo82/Porsche/Boxster/Caliper-Seal-Repair-kits/
2. This Renntech thread discusses the whole process including a full rebuild, and has some part numbers.
http://www.renntech.org/forums/index.php/topic/25913-brake-caliper-seal-replacement/page__p__181970#entry181970
3. This Pelicanparts page lists the kits.
http://www.pelicanparts.com/catalog/shopcart/986M/POR_986M_BRKhyd_pg3.htm
 
You might want to consider going to the RS14 Blacks....little higher temp range.
Better overall feel on track.
I used to run Pagid Orange on track on my 914-6 with a 2.7RS motor running 4 piston JFZ calipers front and rear.
Also ran Pagid Orange on my 1987 951 with complete Turbo Cup suspension on track.:D

I have also had good results running Porterfield R4-Ss on my track 914s
 
Thanks for the link. On the pelican parts page, there is "caliper rebuild grease". Would this kit with the seals for the pistons on the brake cliper constitute a "rebuild"? Not sure what else you can do. Thanks
 
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