The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

b20b dizzy - vacuum RETARD ???? 140-160 1970

posted by  someone claiming to be Rhys on  Thu Jan 23 14:44 CST 2003 [RELATED]

Phil the factory method of setting timing on the B20 with vacuum retard is to set the initial timing with the vacuum disconnected. To set 10 degrees BTDC with it connected would produce a total advance of over 40 degrees, which is far too much.
Ported vacuum advance, like old Fords, can be set connected or disconnected as there is no vacuum signal at idle. GM and Chrysler are disconnected because they use manifold and the vacuum is present at idle. Exceptions exist in all by the time emission controls happened by though.






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.