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  1. jimmbo

    What are the best ST225/75R/15 boat tires?

    Goodyear Endurance.
  2. jimmbo

    Concerned about Hull Config / Cramped Engine Bay

    Like how Cars have been built the past 25 years. Have to take the front of the car off to replace a Head Light bulb
  3. jimmbo

    Best upgraded ignition system for use with Sniper EFI on a 1979 Mercruiser 260

    If the points were badly worn/corroded, replacing them would restore HP, and improve Economy
  4. jimmbo

    Best upgraded ignition system for use with Sniper EFI on a 1979 Mercruiser 260

    Reread post #2. It has the best option you can opt for. Easy to obtain Parts if it does crap out, unlike like the 3rd Party stuff.
  5. jimmbo

    Concerned about Hull Config / Cramped Engine Bay

    Removing the that Rear Panel might compromise the the Hulls Integrity by removing Structure. Dzus Fasteners aren't the same as a few layers of Glass
  6. jimmbo

    Concerned about Hull Config / Cramped Engine Bay

    On this unit, the boat would likely need to be split to even do that. A questionable purchase when new and under warranty(everything is the Dealers problem), but one the Warranty ends, the 'For Sale' Signs appear on these boats
  7. jimmbo

    Squeezing more from 5.0L 220hp

    I never bothered to read all the posts, but First is the engine in good condition Mechanically? Compression #s As for getting more power out of the 5 liter, it is not known for its Torque producing ability, which you need in a 23 footer. You are currently over propped, and need to get the RPMs...
  8. jimmbo

    Concerned about Hull Config / Cramped Engine Bay

    If it looks difficult to access the engine, it will become worse than you imagined, when you do have to service it, or things like the Steering Linkage. All the stuff you can't easily reach, including the engine was likely installed before the Cap was attached to the Hull... Myself, I wouldn't...
  9. jimmbo

    Can You Make Up For Different Gear Ratio With a Different Pitch Prop?

    As Scott06 said, it is a yes and no answer. While dropping pitch enough will bring up the Rpms, it does result in a loss of Efficiency. There are reasons that the Engine Manufacturers use different Ratios on different Engines, one of which is to reduce the number of Prop designs/pitches they...
  10. jimmbo

    Yamaha lf200 four strokes not planing out

    The joys of Computerized 4 Strokes, well Computerized 2 Strokes as well, very difficult to Diagnose and/of Fix
  11. jimmbo

    Does VP go nuts on revisons and models vs. Mercrusier?

    I've a had a VP for 20 yrs, and it has never given me a Problem. I like the Cone Clutch, as it doesn't wear like a Clutch Dog does. Raw Water Pump is inside the boat, and doesn't require the outdrive to come apart or off, to replace
  12. jimmbo

    went from 3 blade to a four blade prop

    Check that you didn't bend the Propshaft
  13. jimmbo

    thread wear on prop shaft what is causing it?

    Improper Torque on the Prop Nut?
  14. jimmbo

    same speed with different props

    Try a 23, which is more of a "Speed Prop" than the 21, the result more impressive
  15. jimmbo

    same speed with different props

    I did the same in my teens with my dad's boats, and later with my own, pretty much the same results
  16. jimmbo

    Johnson 112 vs 90 questions..

    If it is a 112 powerhead, perhaps it isn't?
  17. jimmbo

    Johnson 112 vs 90 questions..

    I will assume that the 90spl is a Crossflow, as is the 112. Both are 99.6 cubic inch Blocks, and there is supposed to be significant differences in the Porting between the two engines, The 90 makes its best power, around 4900 rpm, propping it to rev higher actually reduces its HP. Now the 112...
  18. jimmbo

    how to break in a rebuilt 60 hp Merc 2 stroke ?

    There are a lot of Unscrupulous People unloading things, after they wreck them. I have weeded out a few, by saying I would want the Motor checked by a Shop, of my choice, and that I was willing to pay for that. Any seller who baulked at that idea, saw me leaving real quick.
  19. jimmbo

    What mix

    And dumping the Oil into a Full tank, ends up will all the Oil at the Bottom, so initially the mix is very heavy with Oil, then a the Tank empties, it leans out to where there is not enough Oil. Rocking the tank does F all when it comes to mixing the oil with the Gas. Same goes for hauling it...
  20. jimmbo

    Running 5.7 without choke on quadrajet?

    GM autochokes were always, at least the ones on my Buicks, Olds, and Cadillacs, reliable. The Old Man, had a Dodge, and it would start fine when cold, and would drive away, but as you came to the first Stop Sign, it would stall, and he could grind on the Starter all Day, foot to the Floor, and...
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