LPT Boost Up, Wastegate issues - SaabCentral Forums
* site search:  
Home Saab Pictures Saab Classifieds Saab Dealer Listings Saab Forum Saab Forum

Go Back   SaabCentral Forums > Saab 9000 > Saab 9000 Performance, Mods & Tuning
Saab 9000 Performance, Mods & Tuning Covers Tuning & Performance modifications for the Saab 9000

SaabCentral.com is the premier Saab Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
  #1  
Old 26-05-07
Fan-TC Fan-TC is offline
SaabNut!
 
Join Date: Jan 2002                                                
Location: Australia
Posts: 262
Default LPT Boost Up, Wastegate issues

Right.
Firstly, I am now in a 96 9000 CD LPT. I dont love it anywhere as much as my old c900 aero but its good, cheap (extremely) transport.

I have driven it stock for about 3 weeks. Now i have decided nuts too that so I have put a full turbo computer in it and a turbosmart 2 stage boost controller.

My issue is that i am having heaps of trouble getting the turbo to make extra boost. Even with the bleed valve fully open I cannot get more than 0.5 bar (from 0.4 bar stock). I have played around with it, wound the wastegate actuator rod in. But no matter what i cannot get higher boost. I have disconnected the wastegate line just for testing and it definitely will make 1+ bar without a wastegate so I am definitely having wastegate issues. (yes i was careful not to overboost with the wastgete disconnected)

I need to know what the best option is to fix these rediculously soft wastegate actuators is?

thanks for the help.

Karl
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 26-05-07
Paul's Avatar
Paul Paul is offline
Vendor
 
Join Date: Aug 2001                                                
Location: Northamptonshire
My Saabs: -
Posts: 1,889
Default

Quote:
Originally Posted by Fan-TC
Right.
Firstly, I am now in a 96 9000 CD LPT. I dont love it anywhere as much as my old c900 aero but its good, cheap (extremely) transport.

I have driven it stock for about 3 weeks. Now i have decided nuts too that so I have put a full turbo computer in it and a turbosmart 2 stage boost controller.

My issue is that i am having heaps of trouble getting the turbo to make extra boost. Even with the bleed valve fully open I cannot get more than 0.5 bar (from 0.4 bar stock). I have played around with it, wound the wastegate actuator rod in. But no matter what i cannot get higher boost. I have disconnected the wastegate line just for testing and it definitely will make 1+ bar without a wastegate so I am definitely having wastegate issues. (yes i was careful not to overboost with the wastgete disconnected)

I need to know what the best option is to fix these rediculously soft wastegate actuators is?

thanks for the help.

Karl
My previous car was a 96 9000 LPT, which I converted to FPT with a BSR stage 1 ECU, as part of the upgrade, this also required fitting a Saab Boost Pressure Valve, as the standard LPT is not fitted with one of these. Have you got this BPV fitted? If not you will not be able to make full pressure...

I also found that to get the power that I should be getting I needed to upgrade the actuator to a Forge unit, once all this was done the car was transformed and easily made 1.2 + Bar boost and in excess of 220 BHp
Reply With Quote Quick reply to this message
  #3  
Old 27-05-07
Fan-TC Fan-TC is offline
SaabNut!
 
Join Date: Jan 2002                                                
Location: Australia
Posts: 262
Default

Saab Boost Pressure Valve???

Are you talking about the APC?

If so, i am not going to run APC. I am not planning on pushing boost high enough to really need one. I am justn using (or trying to) a boost bleed off valve in the wastegate line.
Reply With Quote Quick reply to this message
  #4  
Old 31-05-07
Norman Lovie Norman Lovie is offline
Saab Lunatic
 
Join Date: Nov 2006                                                
Location: aberdeenshire Scotland
My Saabs: 9000 Aero 97
Posts: 1,036
Default

not tried this but no reason why not

a) fit an external spring between the gate rod & the actuator = increase overall spring strength = give you a better intial boost
b) fit a perforated pipe inline between the press supply & the actuator, keep adding holes until you get the desired bleed off & hence boost. Assist this by putting a flowrestrictor up stream of the pipe to reduce the overall supply
crude but could be effective
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the SaabCentral Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 Off

Forum Jump


All times are GMT -4. The time now is 03:33 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

top of page | sitemap | email us



copyright © 2003 - 2011 saabcentral.com, All rights reserved http://www.whiter.co.uk - valid xhtml - valid css
SaabCentral is an independently run website and is not affiliated in any way to Saab Automobile AB.


Garage Plus vBulletin Plugins by Drive Thru Online, Inc.