Modified retard capsule. - Saabnet.com Bulletin Board


[General | Members | C900 | 9000 | NG900 & OG93 | 93 | 95 | NG95 | 99 | Sonett | Vintage Models | Performance | Detail | Clubs & SOC | Other Cars | Books Movies & Music | Chat | FAQs | Gifts | Member Photo Galleries | Member Directory | Classifieds | Service/Mechs | Manuals | Polls | What's New | Raffle | Photo of the Month | Sponsors]

C900 Bulletin Board
1979-1993 & 94 Conv
Search:
(Search Author's Posts: e.g. Keyword:Author)*Members Only


[Main C900 Bulletin Board | Post Followup | BBFAQ ] [ Prev by Date ] [ Next by Date ] Member Login / Signup [Most Recently Edited Saabnet.com Photo Galleries]
Modified retard capsule.
Posted by SWEDISHDYNAMICS [Email] (#2114) [Profile/Gallery] (more from SWEDISHDYNAMICS) on Fri, 3 Nov 2017 13:50:01

In Reply to: Modified retard capsule., Acejed, Wed, 1 Nov 2017 15:53:24
Alert me when someone posts in this thread:

Hello,

Thank you for posting!

The SAAB 900 ignition retard mechanism is a factory set 5 degree reduction from base ignition timing. With a typical 16 DBTDC set base timing, the factory retard mechanism will reduce this to 11 DBTDC.

When under additional charging/boost pressures via APC enhancement, etc., the ignition timing should be brought to 10 DBTDC when under these increased pressures which will provide a more consistent plus higher charge. We will typically recommend fully pressurizing the retard diaphragm when setting the ignition timing to 10 degrees. When relieving this pressure, the base timing would be apparent though the timing light. Modification of the factory ignition retard mechanism stop could take some trial and error but could be 17-16 DBTDC base ignition timing with a retard to 10 DBTDC when under pressure/charge.

We have had customers employing manual boost control on the ignition signal line to allow for some control of ignition retard curve but a majority of ignition impact will come through the change in 1-3 degree change from the factory ignition timing.

Best of luck with your project!

Sincerely,

GSK at SWEDISH DYNAMICS, INC.



posted by 32.209.3...

http://WWW.SAABPerformanceParts.com


Posts in this Thread:
Alert me when someone posts in this thread:

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 [Most Recently Edited Saabnet.com Photo Galleries]
E-Mail: (Optional)
Re-Enter E-Mail: (Confidential & Secure - Not revealed to other users!)
Note: Please check your spam folder for BB responses.
If you use GMail, follow these instructions from Google so that they appear in your regular inbox.

Subject:

Posting rules are simple - No for sale/wanted ads or live auctions may be here - use the classifieds.
You may not cross-post your message to multiple BBs.
Personal attacks, insults, or flaming are not allowed.
Site Members do not see any red text, inline ad links, skyscraper ads, box ads, nor anti-spam check.

Message: (please no for sale/wanted classifieds - post those in the TSN Classifieds)
To add inline links to your post, use [link]http://www.domain.com/[endlink] or use the Optional fields below.
To add inline images to your post, 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/)
To promote your own Saab site here, you must have a link back to The Saab Network.
Link Title: (Optional)
Optional Image Link: (e.g. http://www.saabnet.com/img.jpg)




The content on this site may not be republished without permission. Copyright © 1988-2017 - The Saab Network - saabnet.com.
For usage guidelines, see the Saabnet.com Mission and Purpose Page.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

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 | RandomScreening.com
Your address is: 54.224.168.206 - Using CCBot/2.0 (http://commoncrawl.org/faq/) - Logged.

Site Members do not see red text instructions, skyscraper, nor box ads.
Click here to see all the Site Membership Benefits!