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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

How Much Compression Is Too Much? 200

posted by  Smitty on  Tue Oct 21 15:10 CST 2003
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Aug 9 22:44 CST 2014
[RELATED]

That much of a change in the 'good' direction does seem strange, but engine block temperature and ambient temperature can vary the ring-cylinder fit somewhat. Cranking speed (which also varies with engine temp and battery condition) may be responsible for some of the difference. Maybe you've been using better oil and filters? Or maybe some oil is getting past the guides, and the head is starting to get some carbon deposits?

Nothing to worry about, though - you won't blow the head through the hood. If anything, you're getting some slight increase thermodynamic efficiency (Carnot cycle) with an increased compression ratio.






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.