Evinrude 1987 140 v4 Rebuild

[nymack66]

Thanks for the advise and the words of encouragements, You Guy's hit exactly on two issues I was having second thoughts about, one I can easily address just use the new heads I have, the other in regards to the corrosion around the sleeves???

My plans for now is to dissemble the LU and Mid only to the point where I will get to the critical bolts to make sure they are all in removable condition for future access etc, I don't want surprises later on.
It will also allow me to replace the impeller and inspect the water pump area not to mentioned drain the LU oil and inspection for contamination or metal shavings.
I will not use the tilt and trim off this motor, since I have one in immaculate condition with new motor, the one on here shows some corrosion.
I have since loosen the bolts on the mid and LU for soda blasting, I was soaking the bolts with PB Blaster since Sunday they are all loosen up now for removal, my tree shade mechanic last year worked on my old LU broke a number of bolts. See it pays to do this crap yourself.
Rocking the bolts back and forth never force it or make them overheat trust me they were tough removing but I score :)
Tip:
Be sure NEVER to have the PB blaster come in contact with any rubber example the end caps of the tilt and trim it will ruin the seals.
The installation of these bolts I will coat each one with High Temp Gasket Sealer so they can never freeze up, grease will not work here. One big word Electrolysis one simple fix! I have tried this on my propeller shaft and inspected it after a year slid off like poop out a goose.
Sorry the high resolution photos may shift the view off I will re-adjust the camera next time
Photos of Mid/LU
Notice the paint job ? Not good at all painted over the sealant and all.