Ok all, after much trial and error, and a lot of troubleshooting, the new mechanic found a hairline crack on Cylinder 7 (Cracked block). Can't say this was the culprit of the overheating, how long it has been there, or (most likely) if this was simply the cause of the block overheating. Either...
All,
Looking to flush mount a Garmin or Raymarine GPS (6"-7" screen) into my dashboard, so I will have to relocate/ purchase new gauges. Has anyone done this? If so, I would love to see some pictures on how you relocated everything. Thanks in advance!
Quick update:
Engine is out of the boat and getting a full review of everything. Thus far, the following has been completed:
-New Starter installed
-New Alternator installed
-New raw water pump housing, impeller, gaskets, and bolts installed
-Heads/ valves redone
-New 165 degree thermostat and...
I hear ya! It almost makes me want to open my own marine shop. By simply doing honest work and managing client expectations, there’s a lot of money to be had. Good reliable mechanics seem to be so hard to find these days.
Correction, thanks espos4. I did purchase new manifolds and risers. This mechanic will be taking them back off though to verify the previous mechanic did it correctly, and of course reinstall new gaskets.
The borescope is for the cylinders, making sure they aren’t marked and scored.
Hello All,
Long time update coming. Long story made short: My local marina, whom I trusted to do solid work, simply did not. The first in-house mechanic updated me on progress being made throughout the winter months (albeit slow progress due to "winterizing 300 boats")... only when I called...
I have to replace the manifolds, spacers, and risers on my 07 Sundeck 5.7 Mag MPI.
To those that have replaced yours on the same engine, any recommendations on who to buy/ stay away from for cast irons?
Lastly, if my manifolds, risers, and spacers are not currently dry joint, is there any...
Any signs of leakage around the head gaskets? Any black or white smoke coming out of the exhaust? If you pull the spark plugs, are they oily?
Id recommend cleaning it up and running it with the hatch open to see if you can identify the source.
Thanks for the info! Did you have to remove the cool fuel housing?
Currently on order, awaiting delivery:
Impeller
Housing
O rings
Bolts and washers
Gasket
160 thermostat and all of its gaskets
Belt
Should all be here by next weekend.
If that doesn’t solve the issue, I will be looking more...
This is the the seawater pulley. To the left of this, there’s about 1” clearance between the pulley and the side of the inner Hull. From there, it rises about 12” tall, where it meets the steps to the swim platform. I’ll take another pic tomorrow.