06-02-2022, 03:16 PM
(This post was last modified: 06-02-2022, 03:27 PM by Bob Culver.)
Ring order seems correct. The third oil ring is usually slotted and drilled.
Opinions differ on gap arrangement and a look thru sundry "modern" workshop manuals reveals a myriad recommendations. The rings usually turn anyway. Has more influence with loose fitting pistons. Will little affect comp.
What causes you to consider the comp low? As long as at least one of top rings has a reasonable gap, and .o10 certainly is, comp is little affected, and running comp even less so.
With Sevens can try others on the handle to establish what is common, although many now have raised cr.
Opinions differ on gap arrangement and a look thru sundry "modern" workshop manuals reveals a myriad recommendations. The rings usually turn anyway. Has more influence with loose fitting pistons. Will little affect comp.
What causes you to consider the comp low? As long as at least one of top rings has a reasonable gap, and .o10 certainly is, comp is little affected, and running comp even less so.
With Sevens can try others on the handle to establish what is common, although many now have raised cr.