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Old 02-20-2004, 07:46 PM   #1
Porsche914boxer4
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Default Brake pedal play with Stoptechs

Hey there. I have the Stoptech kit (calipers and rotors) and Axxiss Ultimate pads. The problem is that sometimes when I try to apply the brake, the pedal travel is significantly increased as compared to other times, almost triple the usual travel. I don't think it's an issue of the pads warming up either, as it happens when they are warm too. Could this be a lack of vacuum for the brakes or something? What are you guys with Stoptechs seeing?

Thanks for all your help.

Eli
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Old 02-20-2004, 08:15 PM   #2
granteeton
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first, did you change out the brake fluid for the superblue stuff. if so, try bleeding the system. i installed some the other day, cobb brakes but the same stuff, and didn't bleed the system correctly and got the same result. do the pass. front, driver rear, driver front, pass. rear sequence and see how that works. your could also try going to the service dept. and have them do an ABS check sequence. that bleeds out the air in the abs system.
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Old 02-21-2004, 02:57 AM   #3
wylie
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I've had pedal travel due to bearing flex and axle problems. Can't think of any other reasons for pedal travel, unless you've boiled your fluid and experience piston knockback, but sounds like you are experiencing this on the street under cold operating temps?
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Old 02-21-2004, 02:32 PM   #4
rgg16g
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Default Re: Brake pedal play with Stoptechs

Quote:
Originally posted by Porsche914boxer4
Could this be a lack of vacuum for the brakes or something? What are you guys with Stoptechs seeing?

Sounds like air in the lines, calipers or master cylinder. Did you bleed both sides of each caliper? My Stoptech brakes are very firm with less travel then the stock floating calipers.

Bob
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Old 02-21-2004, 02:48 PM   #5
Arnie
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Pad knockback perhaps?
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Old 02-21-2004, 04:33 PM   #6
mikkyo
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I vote for an air pocket in the system.
Try bleeding the brakes with the car running, then bleed with the car off, or use a pressure bleeder. That on/off sequence has helped some folks.
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Old 02-22-2004, 04:39 AM   #7
Razlak
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Quote:
Originally posted by Arnie
Pad knockback perhaps?
Yep, more than likely... here's a Stoptech article on it: http://www.stoptech.com/whitepapers/knockback.htm
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Old 02-23-2004, 11:42 AM   #8
Porsche914boxer4
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Thanks for all the help, I will bleed them with new fluid. Any recommendations?

Thanks!

Eli
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Old 02-23-2004, 12:07 PM   #9
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