Search results

  1. J

    MerCruiser 140: Which end of the push rod is up?

    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...
  2. J

    exhaust riser to outdrive tube burst.

    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...
  3. J

    Rochester 2bbl rebuild questions

    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...
  4. J

    Do I need a distributor?

    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...
  5. J

    Mercruiser 140 overheating at WOT

    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...
Top