Recent content by TheHunter990

  1. TheHunter990

    1986 Century 3500 LX 20FT Bowrider Prop

    Boat: Weight with fuel right around 4000lbs. (no people on board) Engine: We have a Vortec 350 putting out about 300HP, never dynoed, but that should be close. Thinking WOT should max with light load at 5K RPM. Recently re geared the Alpha One drive to 1.5 (was 1.98). All the props we were...
  2. TheHunter990

    Flywheel housing installation

    We installed the flywheel housing on a new engine (housing and all other parts from a mercuriser1987 305 230 model alpha one). We were surprised that the dowel pins don't locate the housing at all, there is about an 1/16" gap. Is this nothing to worry about or is there special tools to line it...
  3. TheHunter990

    Riser interchangeability

    We need to replace the exhaust manifolds/risers on our Alpha One Gen One system. Has a V8 305 chevy for the engine. (Plan to switch to a 350 as well as exhaust). Engine serial A570518. This 4"/7 degree outlet manifold/riser seems like it is much more available than the 3" 15 degree currently...
  4. TheHunter990

    V8 305 Mercruiser Engine ID

    Hi, can you help me ID this motor: Serial A570518 on Rocker cover Serial 0B559861 on gimbal housing or engine starter Engine block casting is 14093627 I think it is a 88 Mercruiser 305, 1 pc rear main seal, roller cam, 4 bbl carb. I'd love to know what is it for sure. Have some upgrades in...
  5. TheHunter990

    1986 Mercruiser 305 optimum temperature

    Re: 1986 Mercruiser 305 optimum temperature This is what both valve cover caps look like, and the breather hose was plugged this the same stuff. We run the boat 2-3 hours at a time. I pulled a valve cover cap when the engine was running once, and steam was coming out pretty good.
  6. TheHunter990

    1986 Mercruiser 305 optimum temperature

    We have been noticing some white greasy sludge on the valve cover caps, and in the 2 breather hoses to the carbs (one was completely plugged with it). Our engine is runing at 150 F on the top of the thermostat housing, does that seem right? (Checked with a infrared gun). The engine oil is looks...
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