|
Here is the promised photo of my removed cylinder liner and 2 tools. I will probably remove the other 4 the same way. I don't think the welder is required. The bore in the block is fine. That cheap steel screwdriver can't scratch cast iron. Note the groove at the top of the cylinder that locks the liner in place (per factory manual). I read that 86+ 300D engines (alum block) don't have a locking groove.
My current issue is deciding to keep or change the liners in cyl 2-5. I measure bores between 90.830 to 90.907 mm (crosswise & axial), whereas factory limit is 90.919 to 90.928 mm for cyl 2-5. Not only are they in spec, but some are even "too small". The main thing is machining the liners to match the pistons (~1.5 mil gap), so maybe the factory did that (no record of re-sleeve by prior owner). "Out of round" is 1 mil or less for cyl 2,3,4 (good) but 4 mil for cyl 5 (bad). I don't fully trust my measurements using a telescoping transfer gage and vernier micrometer (+/- 1 mil), since it is easy to get the gage cocked or for it to slip. I will try judging by the end gap of the new rings and gap of the pistons once I get them clean.
|