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View Full Version : Mercury Tech 2.4 1988 XR4 Block concern



Champ203scx
07-14-2024, 12:38 PM
Just got block back from machine shop and noticed something a tad eye catching....On cylinder #1 the sleeve is a tad separated from the block cast causing a small gap. I even put alcohol in the gap to see if it would seep out. Alcohol stayed, even old piston looks good from cylinder #1 and the head for that area. With this block I needed to clean up cylinders #3 and #6 so I had to take the whole block to .020 to get everything cleared for new Weisco Pistons for their clearance....My concern is I've never seen this before is it a concern ? Thoughts ?? 534376534377534378

rock
07-14-2024, 02:36 PM
Probably gonna be a heat transfer issue.

Rock

skialot2
07-14-2024, 03:31 PM
Is that a replacement sleeve? Looks like it's not installed correctly. Is it loose? Is it out of round?

tlwjkw
07-14-2024, 03:51 PM
that ain't gonna work very long at all.... register (?) needs boring and oversize sleeve...

think its called register?.. been way to long ta remember for sure

LakeFever
07-15-2024, 05:29 AM
Check cyl for round