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  1. harringtondav

    Thunderbolt IV ==> Thunderbolt V?

    So I'm wasting my Sat. afternoon time pipe dreaming, and probably will be wasting some of your time too. I'm wondering if my '96 4.3LX could be converted from it's Thunderbolt IV to a V. Assuming the graybeards don't answer "Nope", I have questions. First mine is working fine, and hopefully...
  2. harringtondav

    807962A15 to new 87-8M0052936 plunger shift cut-out switch conversion?

    On behalf of my penny-wise, pound-foolish boating bud. His old roller arm cut-out switch is bad, and he shifts w/o the cut-out function because he is too cheap the buy the $116 807962A15 riveted old switch/plate assy. I keep telling him he is in for big repair$ if he doesn't fix that function...
  3. harringtondav

    Want to share Merc. special tool drawings

    I see professor emeritus Don S has stickies for Merc. special tools. 22 yrs ago I had the design know how and tool room access to reverse engineer all necessary Alpha Gen II special tools. I have copies of CAD drawings and would like to share these on this forum, if permitted, and if I could get...
  4. harringtondav

    Merc. 4.5L replacement for GM 4.3?

    I know I'm stretching this forum's DIY rules, but I'm curious if there are any experience based knowledge on Merc's. new 4.5L replacement for the GM 4.3L Vortec. I'm daydreaming about a replacement for my 22 yr. old solid 4.3 Vortec Gen II boat, but I see my choice is the Merc 4.5 or a GM big...
  5. harringtondav

    iBoats Parts Diagrams?

    Where does iBoats keep their model ​​​​​number & year parts diagramd?
  6. harringtondav

    Gimbal bearing seal removal?

    I've got this one behind me, but need tips b4 the next time. I always change the transom seal with the gimbal brg. But my slide hammer jaws slip on the rubber. Last time I had the engine out and pushed it out from inside. Any suggestions for improved pulling?
  7. harringtondav

    Dist. Rotor Removal?

    I finished up 22 yr. deep maintenance this winter, changing serviceable good parts just because I had access. I've never touched the dist. cap, rotor or plug and dist wires 'cause the engine has been running great. But This is the last maintenance point I haven't touched, and I'd like to get at...
  8. harringtondav

    Bell hsg. lube monitor hose size?

    I've had my bell hsg. off many times, and I think the worst part is disconnecting the lube monitor's reusable clamp on the bell hsg. hose barb. I know it's tight in there, but if Merc. would have given me an extra inch, removal would much easier. My bud tore his in two, so we went to Advance...
  9. harringtondav

    Need advice on exhaust boot hose clamp

    Need some tips from you salty gray beards. I've replaced at least six Alpha exhaust boots on my and friends boat's in 22 yrs. Getting that hose clamp correctly placed around the gimbal plate hub has always vexed me. Keeping it positioned between the drive shaft bellows, and keeping the screw...
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