Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

986 Brake vacuum pressure

DiyEvBoxster
 Share

Recommended Posts

DiyEvBoxster Member

DiyEvBoxster

Posted
Posted

Hello

 

I'm in the process of converting an 2000 2.7L 986 to full electric car. I have mostly everything sorted, car is moving and working.

 

But to get it registered to road, I should prove that my new electric vacuum pump (Hella UP30) will provide enough vacuum for brakes.

 

Does anyone know any workshop-manuals or any other "definitive source" for vacuum pressure or vacuum specs for the 986 brake system ?

 

That would help me a lot, hopefully I would be able to prove that new system is adequate for brakes - certainly when driving, it feels just right.

 

Thanks

 

Henkka

 

  • Moderators
JFP in PA Member

JFP in PA

Posted
  • Moderators
Posted

Manifold vacuum is going to vary with throttle position, but at idle you should be seeing around 20+ inches of vacuum.  More than likely, you are going to need to install a vacuum reserve chamber along with the vacuum pump to assure sufficient vacuum under all operating conditions.

DiyEvBoxster Member

DiyEvBoxster

Posted
  • Author
Posted

Yes, installing an vacuum reserve is definitely an option to consider. Would you happen to remember any workshop manuals or similar that would mention correct vacuum pressure ? 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.