I just replaced the head gasket on my 73 MerCruiser 140.
I dutifully kept track of which rocker and push rod went to each valve. I neglected however to keep track of which end of the push rod is up - The end with the big hole, or the end with the little hole.
I'm pretty sure I can tell from...
The prop on my merc 140 - pre-alpha has a flange-ring at the trailing edge of the hub that widens as it extends the hub length about an inch. This flange cracked and I removed it. The next time I took the boat out the rubber tube that connects down from the riser to the outdrive burst...
I put a kit in the Rochester 2bbl carb on my NewToMe 1973 Mercruiser 140 because it was idling rough and bogging around 4000 rpm. Completely disassembled and gave it a 24hr soak in parts cleaner, cleaned everything with carb cleaner and blew out all passages with compressed air. Measured and...
So I'm trying to set the dwell on my '73 Mercruiser 140 and it kinda jumps all over the place. Turns out the distributor shaft is so wobbly that I can wiggle it about 1/8th of an inch. So the point gap can vary from something like .022 +/- .125"! sigh.
Could this be why the thing runs kinda...
I just bought a 1973 sidewinder 16' w/Mercruiser 140 and took it to the lake. It very quickly overheated. I then replaced the impeller which was, of course, completely shot. I also replaced the missing thermostat.
Now it warms up to about 160-180 degrees and stays constant until I push it...
