1979-1993 & 94 Conv [Subscribe to Daily Digest] |
![]() | [Main C900 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: vacuum retard, ported vacuum question Posted by RS [Email] ![]() ![]() ![]() In Reply to: vacuum advance, ported vacuum question, Steven W, Tue, 2 Jun 2015 09:54:44 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Quiet day. Surprised nobody else replied.
It's a little different situation than good, ol' American iron (of which i have fond memories): the servo on the side of the distributor is actually a vacuum retard - as boost increases, you need to retard the timing.
The port that's almost directly above the throttle plate is the right one. It could be put on a port further behind the throttle plate, but there won't be much difference in performance, and the spot it's in probably gives the servo faster response to fluctuating pressures.
In fairness, there are some custom distributors that have been talked about on the site which are set up for a a range of advance and retard, but they're not all that common.
->Posting last edited on Tue, 2 Jun 2015 15:16:34.
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.
![]() |
![]() |
![]() |
![]() |
![]() |