Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

Reply
 
LinkBack Thread Tools Display Modes
Old 09-28-2015, 06:49 PM   #1
On the slippery slope
 
JayG's Avatar
 
Join Date: Mar 2014
Location: San Diego
Posts: 3,429
Garage
Brake flush amounts

I'm getting ready to do some track days and want to replace my brake fluid before I go. My current fluid is clean, so it is almost impossible to tell when the "old" fluid is out and the new in. That is why I want to do it by measuring the amount.

Last time I bleed and flushed my brake fluid, I found a post that specified how much fluid per caliper. I do remember it did add up to less than a liter.

I can't find that thread again

Does anyone know how much fluid you need to push through each caliper and the clutch slave to full replace the fluid?

__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region, 2014 Porsche Performance Driving School
2013 C300, 2010 Jetta 2011 Mazda 3, 1998 Windstar - Dog van , 2004 F-150 "Big Red"
JayG is offline   Reply With Quote
Old 09-28-2015, 06:59 PM   #2
Registered User
 
Pdwight's Avatar
 
Join Date: May 2013
Location: North Alabama
Posts: 2,079
This would be a good stickie for reference. I am about to flush my fluid as well (Original as far as I can tell)
Pdwight is offline   Reply With Quote
Old 09-28-2015, 07:07 PM   #3
Registered User
 
steved0x's Avatar
 
Join Date: Dec 2012
Location: FL
Posts: 3,997
Are you a member of the Boxster register? They have an article on brake flushing with exactly what you are asking. You have to have a login to see it though I think.

PCA Boxster Register

In this article he bleeds 6 ounces out of each rear caliper (3 oz per bleeder) and 5 oz out of each front, to get a complete flush.

I am about to do a flush as well but luckily(?) my old fluid is dark from use so it is easier to tell

I recently had to bleed my front driver side and before I did I pushed the caliper pistons back using a brake pad spreader tool. I figured this would help me flush the old fluid that was in the caliper closest to the piston. When I bled I got a slug of ate blue from a couple of flushes ago... I am going to make this a part of my brake bleed workflow from now on. I also swapped my pads inside to out because the inner had less wear, I believe due to the cooling from my gt3 brake ducts.

Steve
steved0x is offline   Reply With Quote
Old 09-28-2015, 07:25 PM   #4
On the slippery slope
 
JayG's Avatar
 
Join Date: Mar 2014
Location: San Diego
Posts: 3,429
Garage
^^^
I saw that one. The one I remember was in ML, not oz
Its interesting as the entire system is .4 liters or ~12.8 oz

6 oz is ~ 175 ML per rear caliper and 5 oz is~150 per front
That totals ~650 ml, so that makes a lot of sense

I saw another amount from someone and they were saying 500ml per caliper
That seem pretty high to me

__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region, 2014 Porsche Performance Driving School
2013 C300, 2010 Jetta 2011 Mazda 3, 1998 Windstar - Dog van , 2004 F-150 "Big Red"

Last edited by JayG; 09-28-2015 at 07:34 PM.
JayG is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 10:43 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page