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  1. Scott06

    4.3 to 5.7 swap

    Fantastic.
  2. Scott06

    Mercruiser 5.0 TKS vs 4.3 MPI

    Again memory is off a tad 4.3 vortec2 bbl is 190 hp.. the 230 4 bbl you reference is non vortec rating, mpi you reference is a vortec, merc never Made a mpi non vortec so Not apples to apples
  3. Scott06

    Mercruiser 5.0 TKS vs 4.3 MPI

    I think your memory is off 4,3 vortec 2 bbl is 190 hp, no 4 bbl offered , 5.0 Vortex 220 is 2 bbl Again no 4 bbl , 5.7 vortec 260 hp is a 2 bbl.
  4. Scott06

    Can't find 1992 Mercruiser 4.3 Pre-Vortex intake manifold

    https://www.michiganmotorz.com/edelbrock-performer-intake-manifold-1985-p-4370.html this is not a brass lined cross over so won’t work if you are in salt and raw water cooled
  5. Scott06

    Mercruiser 5.0 TKS vs 4.3 MPI

    I don’t want to add fuel to this cause I’m happy with my carb and your happy with your mpi, but the hp comparisons you give are not apples to apples. These are the 2 bbl engines vs mpi As when merc started offing mpi they dropped the 4 bbl. versions. You have to give some one a reason to buck...
  6. Scott06

    Considering a swap

    If you upgraded to something like this https://www.michiganmotorz.com/vortec-marine-silver-package-1967-current-replacement-p-58.html these are about 295 at the prop, I think your current engines are 200 hp. each You’d gain almost 200 hp total. i got one of these packages and swapped over my...
  7. Scott06

    4.3 to 5.7 swap

    I swaped a 4.3 for a 5.0 if youre boat was sold with a sbc if think you will find what I did- the needed 4&1/2” in front of the engine will be there and the stringers had a 12” long pad so that the 4.3 and sbc side motor mounts would both fit. I bought a partial Engine package from Michigan...
  8. Scott06

    1988 Bayliner 2560 Trophy with 5.7 GM and OMC Stern

    If it’s a single engine it will be standard rotation (I think what you’re calling fwd) on older dual engine set ups one will be reverse rotation, now it’s typically done I drive or transmission
  9. Scott06

    Mercruiser 5.0 TKS vs 4.3 MPI

    805359T is the throttle bracket part number. The slave solenoid circuit breaker etc that are on the existing one
  10. Scott06

    Considering a swap

    X2 swap them for newer Vortec engines. What carbs are on your existing ones, you will need new intakes to work with Vortec heads, can use a marine performer for a few extra horses.
  11. Scott06

    New 205ss crownline-is 200 HP enough?

    best advice offered, get the boat with or close to the highest hp offered for that model year. I have yet to own a boat with too much power. 200 hp with a lower pitch prop and 4 blade for water sports would work ok if you don’t mind swapping props and you really like the boat otherwise. i used...
  12. Scott06

    Mercruiser 5.0 TKS vs 4.3 MPI

    comes Down to how many people you want to take out My 200 sport is comfortable for water sports with 6-8 pp, Ten for a cruise
  13. Scott06

    Mercruiser 5.0 TKS vs 4.3 MPI

    sure the 4.3 mpi is great , and likely on paper will get better gph... but ok may be 3gph better fuel consumption. Most people’s use you will never see that difference in your wallet. I’m in the NE US so our season is very short 3-4 months. My total fuel bill is like $800 per year. for me the...
  14. Scott06

    Mercruiser 5.0 TKS vs 4.3 MPI

    I think you are on the luckier side with both the boat and the car. My 3.0 was in a 1991 I cleaned the carb twice. One of those times It made a big difference in runability/idle/ off idle throttle response, but I rebuilt it due to Black fouled plugs Only to find the choke sticking past...
  15. Scott06

    Gear Oil in UJoint Bellows

    That’s in really good shape for a 1974. merc had I think 14 drives prior to the R/MR/ alpha one I think So hard to tell but ther is a lot of interchangeability from the mc1 thru alpha gen 1 (1990) I think you will need to remove the cap to make sure the shims etc go in corrct when reinstalling...
  16. Scott06

    Sea Ray 195 vs 205

    Get the 205
  17. Scott06

    Gear Oil in UJoint Bellows

    Yes I think better together. But I think you want to make a similar fixture to attach it to the workbench or something less spindly than the portable workbench. try some heat on the outside of the housing where the nut goes in . These can be difficult to remove on older drives. Worst case drill...
  18. Scott06

    Mercruiser 5.0 TKS vs 4.3 MPI

    Absolutely I just gave that for engine comparison. 3.0 was in a 17 ft the 5.0was in a 21 ft. But to your point the 3.0 will only use enough fuel to make 135 hp not the 260 that the 5.0 makes, so It’s really about how much hp you are making and using at a given throttle position ... again fuel...
  19. Scott06

    Mercruiser 5.0 TKS vs 4.3 MPI

    You won’t notice much difference. At the same hp out put they will use pretty much the same amount of fuel. 1. if you are concerned about fuel economy pick a different hobby. 2. fuel economy is determined by how hard you hit the throttle. there are a couple gph fuel consumption calculators on...
  20. Scott06

    Sea Ray 195 vs 205

    How many people Do you want to take out? If it’s 4 or less the 195 will be fine I have a 2004 sea ray 200 sport which I think was rebagged in 2006 and 2007 as the 205 sport, before they tweaked the swim pad and rear end. ive had this boat 5 years and absolutely love it. the size is perfect...
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