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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

ocatanes 120-130

posted by  Phil S. on  Mon Mar 29 10:16 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 13:18 CST 2014
[RELATED]

As I said, the B18D (8.7:1 CR) that's the stock motor for a 122S runs just fine on 87-octane, using the R+M/2 standard. The B18B (10:1 CR) is the 1800S / 123GT motor, and it much prefers 91-octane or better.

I am very much against using thick head gaskets. Efficient combustion requires that the piston comes close to the combustion chambers, and the stock design is already far from optimum in that regard. The thicker gasket not only reduces CR, it *requires* more timing advance -- there is no gain to be had from it; it's all negative for performance, economy, head/valve temperatures, and pinging.






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.