273 302 318 340 build

Yes for side clearance on top and 2nd rings. Measured amounts varied from 0.001"-0.0035". FSM spec is 0.0015-0.0030", Not sure what Mahle spec is(Ill double check), for now I figger good on top 2.
I cant find measurements on expander and rails. Next one I will look closer to see that expander and rails are in the grooves properly.
I will look into specs. At least with one piston in I can get closer to compression ratio.
I measured as best I could with dial indicator, and then again with "straight" edge and verniers. Both times I come up with 0.034" outta the hole.
So early compression figures are ranging 9.9:1 to 10.1:1. Head gasket bore diameter and compressed thickness will play a role.

Yes to end gaps for top 2(both within spec). I will look into specs for expander and rails
Pickin away at it....
Thanks!

nm9stheham said

The oil rings and expanders feeling snug in the groove is normal. I can't remember: Did you check ring side clearance in the grooves? It all ought to be fine with new parts..... I just make sure. And you put the rings down in the holes and checked rings gaps? (I figure you did all that as you are thorough, but just can't recall for sure.)

It's coming along!

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