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



 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Newly Rebuilt B30, Compression Test Results? 140-160

posted by  walrus3 on  Fri Aug 11 02:18 CST 2006
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Mon Dec 2 14:20 CST 2013
[RELATED]

Carbs should not affect compression testing - it is all in valves, rings,
headgasket, and to a degree, valve timing. (At cranking speed a radical
cam has so much overlap that compression readings may be low.)
I would imagine that your cam is not that wild - probably a C cam, right?
And the specs are for that cam.

If your throttle shafts are worn or if you have other vacuum leaks, to get
the carb to tune right with the lift pin at idle, it needs to be too rich
for high-speed running. If the plugs are tan, it is not too rich. Too rich
will make them darker or black.

Did you test the compression again after resetting the valves?
--
George Downs Bartlesville, Heart of the USA!






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.