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  1. J

    Improving Ford 302 reliability/performance

    My Nova 210 (1976) has a re-built Ford 302. After the re-build (2003), the prior owner simply had all the old bolt-on stuff re-bolted on. The ignition is old distributor with points and advance weights. The carburetor is the same (4 bbl, vacuum on second barrels), same spark coil, etc. Would...
  2. J

    Filling I/O Transom Holes

    I have a 25' Wellcraft that has twin engines. Want to fill transom holes and re-power using an outboard bracket. Is this hole filling a layman's glass job, or are professional materials/techniques called for? Are the holes simply filled, or does the transom require additional...
  3. J

    Swap: Merc 470s for Merc 4.3Ls (Fit?)

    I'm looking at a 25' open skiff that currently has a pair of Mercruiser 470 (4 cyl) power plants that I want to scrap. I had planned to re-power with a 6.2 L Mercruiser/Bravo 1 until I found the Mercruiser 4.3 L V-6 engines. The 6.2L requires glassing two transom holes and cutting a new center...
  4. J

    Mercruiser Engine Weights

    Considering repowering a 25' Wellcraft that currently has a pair of Merc 470s (4 cylinders), with a Merc 6.2 L. What is the weight of an operating 470 vs an operating 6.2 L that is FWC and has PS?
  5. J

    Mercruiser 470 Magnetos

    I'm looking at a used boat that has a pair of 470s (I/O). The seller advises that the magnetos are awry (not properly charging batteries) and recommends installing an alternator kit on the port engine (the power steering is on starboard).<br /><br />Q#1 - Are magnetos a reliable engine...
  6. J

    Engine Temperature Spikes

    Have a 302 Ford FWC in my 21' Nova, with thru hull raw water pick-up (I/O pick-up is capped off in bilge). Have 160 thermostat. Whether idling or underway, the temp will spike from 160 to 200, then come back down to 160 (steam out exhaust prop hub). May do this 5 or 6 times underway, then...
  7. J

    Tachometer for 1883 75hp Seahorse

    Bought an OMC full gauge (rpm, oil, temp) on e-bay for a trivial sum, but can't figure out the hook-up. Obviously, I'm only interested in the tach. Harness is 8-wire, gauge has positions for 5 or 6 pul/rev on the back side and brochure (minus connection instructions) says for 1996 and after OMC...
  8. J

    Propeller Weight

    I have a 1983 Johnson 75 hp. The props I've been using have been aluminum, weighing upwards of 6 pounds. I recently bought a stainless 13 3/8 X 17 prop and it weighs in at 10+ pounds. Will the inertia of this heavier prop beat up my gear train, lower unit shaft and seals? I'm thinking about...
  9. J

    Diffusers on Propeller Hubs

    I recently went from a small hub (40 hp Johnson) to a large hub (re-built 1983 75 hp Johnson). On the 75 hp, the prop has a ring aft of the blades whose purpose appears to "flare out" passing water. On other props (Hustler, for example), there is a flaring of the prop housing itself, rather...
  10. J

    Johnson 1983 75 hp winterize/power TT

    Can I crank the engine to spray cylinders with the sparks out and dangling, or must they be grounded?<br /><br />Also, can a two-wire power TT motor be installed where a three-wire was previously used? If so, how do I do this (the electrical part)?
  11. J

    Water Intake Screens on Lower Housing, '83 75 hp John

    On commissioning engine (1983 75 hp Johnny) with ear muffs on water intake ports, either blew in, or sucked in port screens (both sides). Am I in trouble? Where did they go? Where can they go? Without screens, can debris go into housing, into water intake tube, into water pump, and into...
  12. J

    Lack of rpm at WOT

    FYI - Have a 1976 Nova Wellcraft (21' - cuddy at 3750 lbs) with Ford 302 (188 hp). Could not clear 3500 rpm with 15-square prop (came down from 15 x 17). Covered everything else (tune-up,clean fuel lines, water separator, secondaries wide open, etc,), but no 3800 - 4200 rpm. Getting 39 mph @...
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