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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2021 Posts: 6,939 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,939 | Cylinders can be bored over or sleeved. Don't condemn the block, yet.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Nov 2021 Posts: 1,399 'Bolter | | 'Bolter Joined: Nov 2021 Posts: 1,399 | I know that you are looking for issues in the cylinder bores related to the excessive exhaust smoke but I believe that you indicated cylinders #1 and #2 that you recently inspected with the bore scope had no indication of being the source of the smoke (clean plugs and decent compression). While the pictured piston defects are concerning and may add to your list of concerns for the engine try not to go down every rabbit hole you find or your driive yourself crazy. If your goal is to have a resonable looking and driving truck that will get used like most of these trucks are (a few thousand miles a year at most) without the cost of rebuilding the engine step back and review what you know, what else you need to know, and how best to obtain the information.
Having a lot of air pushing out of the carburetor when doing a leak down test would tend to indicate the intake valves were open, not just leaking past the valve/seat interface.
A good running replacement engine that you can install and achieve your goal without spending money on a rebuild is like winnning the lottery, possible but odds are not good. | | | | | Joined: Sep 2010 Posts: 517 'Bolter | | 'Bolter Joined: Sep 2010 Posts: 517 | OK, I'll secure from GQ...for now. In the meantime, stupid questions: if one of the possibilities is oil leaking past bad valve guides or seals, what will happen if oil/diesel makes its way into the cylinder? Will I cause even more damage? Is there a downside to filling each cylinder with the Berryman and allowing it to drain into the pan before I drain it and then remove it to clear out the sludge? Am I overthinking the sludge clogging up oil passages and should I go straight to the diesel flush (assuming that I won't cause any damage from diesel entering the cylinders)? Then there's the concern of running the engine with pistons that have chunks missing. I've assumed that is a bad thing. Am I wrong? A gentle reminder: I have no experience working on engines! I am truly at everyone's mercy on this!!! | | |
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