Re: It works. read this JJ, Doc - Saab Performance Bulletin Board - Saabnet.com
The banner above is an advertisment - if it asks you to download software, please ignore.
Site News - 7/1: Members: Log In to See Fewer Ads! | 5/28: SAAB Evolutions/TSN T-Shirts $14
[General | Members | C900 | 9000 | NG900 & OG93 | 93 | 95 | NG95 | 99 | Sonett | Vintage Models | Clubs | Other Cars | FAQs | Gifts | Member Photo Galleries | Member Directory | Classifieds | Manuals | *Buddy Registry | *Mileage Registry | Polls | What's New | Raffle | Photo of the Month | Sponsors]

Performance Bulletin Board
[Subscribe to Daily Digest]
(Search Author's Posts: e.g. Keyword:username)*Members Only

[Main Performance Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: It works. read this JJ, Doc
Like This Post: - Subscribe to Daily Digest for this Bulletin Board
Posted by jj (more from jj) on Mon, 19 Mar 2001 17:19:48 Share Post by Email
In Reply to: It works. read this JJ, Doc, WASSAAB, Mon, 19 Mar 2001 14:24:02
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup

Someone is thinking left-handed, but it's not me.

The wastegate actuator works by applying pressure to a diaphram that is
preloaded by a spring. When the applied pressure exceeds the spring
pressure the wastegate begins to open. If you plumbed the output of
the turbo directly to the wastegate actuator, the maximum boost would
be
equal to the spring pressure or 'base boost'.

You state "IF you increase the amount of pressure "pushed' throught he
solenoid vacuum line to activate the wastegate, then you end up with more
boost pressure" WRONG. If you increase the pressure on the actuator, you
will open the wastegate reducing the boost.

The restriction you are inserting is an inpediment to fluid flow. Since
there is no fluid flow in the actuator plumbing (the pressure is just pushing
on a diaphram, no air is moving) there is no pressure drop.

If the turbo is "generating the same amount of boost (duh)" How does the
throttle receive more boost? The throttle can only receive more boost if
the turbo is putting out more pressure.

I don't know about your test. Did you measure boost pressure at the manifold?
Was it just a subjective feeling that there was more boost?
Are you sure you did not introduce a vacuum leak in the line to the
actuator when you put in your restriction?

I still maintain that putting a restriction in the vacuum line to the
wastegate actuator will not increase max boost.

jj

Posts in this Thread:
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup

No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.

Name: Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
E-Mail: (Optional)
Re-Enter E-Mail: (Confidential & Secure - Not revealed to other users!)
Note: Please check your spam folder for BB responses.

Subject:

Posting rules are simple - No for sale/wanted ads may be posted here - use the site classifieds.
You may not cross-post your message to multiple BBs.
Not permitted: political/religious topics and being disrespectful (personal attacks, insults, etc...).
 Site Members do not see any red text, inline ad links, bottom of page anchor ads, box ads, or anti-spam check.

Message: (please no for sale/wanted classifieds - post those in the Saabnet.com Classifieds)
Links are now automatically made active, no need for any special code (or use the Option Link field below) - don't put links in () or end with a '.'
To add inline images to your post, use [img]http://www.domain.com/img.jpg[endimg] (or use the Optional Image Link field below).

Links are now automatically made active, no need for any special code (or use the Option Link field below) - don't put links in () or end with a '.'
To add inline images to your post above, use [img]http://www.domain.com/img.jpg[endimg] (or use the Optional Image Link field below).
Optional Link: (e.g. http://www.saabnet.com/)
Link Title: (Optional)
Optional Photo/Image Link: (e.g. http://www.saabnet.com/img.jpg)
Photo/Image to Upload: (Please be patient while file uploads)



StateOfNine.com
SaabClub.com
Jak Stoll Performance
M Car Covers
Ad Available

The content on this site may not be republished without permission. Copyright © 1988-2024 - The Saab Network - saabnet.com.
For usage guidelines, see the Mission & Privacy Notice.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right. Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY. Classifieds are to be listed in The Saab Network Classifieds pages. This is a problem solving forum for over 250,000 Saab owners, so expect to see problems discussed here even though our cars are generally very reliable. This is not an anything goes type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the Saabnet.com Mission and Purpose Page. Please remember that you are not anonymous. Site Contact | Site Donations | Other Sites by SP - Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot


Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all the Site Membership Benefits!