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  1. Q

    Electrical, ignition interference or other issue (Humminbird 858c)

    My boat has a carbureted 350, Delco Voyager ignition, NGK BR6FS plugs. The Humminbird 858c fishfinder is about a year old, barely used it last year and it has about 20 hours on it this season. I know I have an ignition interference problem at ~1000rpm (screen loads up with static) that I...
  2. Q

    5.7L points to HEI conversion: what spark plugs & gap?

    I picked up a marine Delco Voyager conversion kit to replace the points ignition in my 1978 Sea Ray. Question is, with the HEI, do I just plug & play with the existing spark plugs or is a change needed? Current plugs: NGK - BR6FS (roughly the equivalent of MR43T's if I'm not mistaken) Current...
  3. Q

    New engine, mechanical fuel pump inoperable

    I built a new engine for my Sea Ray last winter - all new internals. It is a Chevy 350 / Mercruiser setup. Anyhow, the mechanical fuel pump works great on the bench (pulls and pushes out of the respective bosses on the pump), but it doesn't pull or push when put on the engine. I have gas to...
  4. Q

    Alpha 1 upper swivel pin to steering lever play

    Did a search of the forum for this and came up pretty dry on my specific question... How much play is acceptable between the upper swivel pin and the steering lever on a Mercruiser Alpha 1? I am familiar with 3 differernt upper swivel pin designs: a splined/splined upper shaft, a...
  5. Q

    Acceptable to shim rear mounts? Mercruiser engine alignment

    I am working on a Frankenstein project - it's a 1978 Sea Ray V240 with Mercruiser 260 (Chevy 350) engine. It's getting a new Alpha drive; should be arriving later this week. I replaced the floor in the boat after I purchased it / knew it needed it before the purchase. While I was had the...
  6. Q

    Circuit breakers - will these work for 12v applications

    I am building a new switch panel for my project boat; part of my intention is to eliminate the glass tube fuses. Relative to circuit protection, I am looking to install push-button reset style breakers in the new panel. I am considering these breakers. The voltage rating listed shows 125-250...
  7. Q

    Mercruiser U-joint bellows reinforcing wire

    I am replacing the bellows on my 1978 Sea Ray V240 (project boat) equipped with 260hp Chevy 350. I think the boat had the MC-1 drive on it but that's a guess - no outdrive on the boat when purchased (just the gimbal housing, gimbal ring and bell housing). The old U-joint bellows I took off the...
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