Volvo RWD 120-130 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 11/2022 120-130 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

No Compression After re-built 120-130

posted by  derek uk on  Mon Jul 31 06:15 CST 2023
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 12:33 CST 2014
[RELATED]

I think you have had the same low compression with both heads on the same cylinder so unlikely to be the head. A big coincidence if it was. 120 compression is low. 160-180 better. 10% difference between cylinder acceptable. New rings won't have bedded in yet so that won't help compression. Did the bores get honed for the new rings? Glazed bores are generally not fixable without honing.
Did you use the same rocker gear with both heads? A cam can be checked visually for excessive wear by watching the rocker movement while turning the crank by hand. A dial gauge on a magnetic base is obviously better if one is available.






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New No Compression After re-built [120-130]
posted by  poderoso  on Wed Jul 26 21:39 CST 2023 >


<< < > >>



©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.