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  1. jimmbo

    Serial number means ...?

    More than once, that has translated to scored Cylinder(s)
  2. jimmbo

    Mercury 40hp Motor mounts

    I had those bolts loosen on my 84 115. I suspect an out of balance Stainless Prop caused enough Vibration to loosen them. It cost me a couple of Buckets of KFC, and a couple of cases of Barley Sandwiches, to get the Service Manager at my Dealer to do the repair, after hours one evening. Also...
  3. jimmbo

    New prop

    Welcome to iboats "Same size" doesn't mean Identical, so there is no reason to expect Identical results compared to the original Prop. You said "extra cup version". What brand and model is the replacement Prop? Cupping can add a bit of pitch, and/or rake, depending on where the cup is on the...
  4. jimmbo

    Tilt trim 70s mercury 850

    The Yoke is definitely different, Best way is to check out the Parts List for the 850, and compare it to a List for the 1984 75hp, that was the 1st yr the new Bracket/Trim System was used.
  5. jimmbo

    50HP evintude tiller fuel connector question

    Automatic Oiling systems were brought in to free the operator from having to mix the Gas-Oil, yet from the moment of introduction, these units have been Mistrusted. Granted, some like Mercury's Auto-Blend, were complete junk, except as a practice for Hammer Throwing, the majority of the designs...
  6. jimmbo

    1978 Mercury 90hp outboard

    Carbon buildup will cause sticking, that doesn't happen from submersion
  7. jimmbo

    1978 Mercury 90hp outboard

    You certainly got that wrong. Racer was being Honest, and trying to keep you from wasting a whole pile of Time and Money. Compression numbers are horrible, and there is a very slight chance that the rings are stuck, but there is a greater chance that they are not. Every High Tension wire is...
  8. jimmbo

    50HP evintude tiller fuel connector question

    VRO got a bad Rap, mainly from Mechanics that didn't understand how it operated, so they would just call it junk. Myself, I have never seen one fail.
  9. jimmbo

    Evinrude 1968 waterpump etc.

    deleted
  10. jimmbo

    Yama carburetor 15 vs Tohastu EFI 15

    I would rather have a carb gum up than a FI system go wonky. Carbs are simple and easy to troubleshoot and fix. FI system are Voodoo and Poltergeists combined when it comes to dealing with trouble shooting/servicing them
  11. jimmbo

    Can I replace my 1994 Mercruiser 5.0 2BBL (305) with a 1998 5.7 2BBL (350) ?

    Make use to get a Marine Carb, I like the Holley 650 Spreadbore https://www.holley.com/products/fuel_systems/carburetors/factory_refurbished_carburetors/parts/FR-80552 also available in factory fresh I would also recommend an Intake that was cast with marine usage in Mind...
  12. jimmbo

    Hello all, I want to install a remote oil filter mount for my 4.3 V6, is it neccessary to replace the filter mount bypass valve?

    Maybe they are, I have never looked. I first noticed the engine sounded like it had Solid Lifters. I happened to touch the Oil Filter after the engine had been running a about an hour, and it was at Ambient for the engine compartment. Dealer was good, they admitted that they messed up, pulled...
  13. jimmbo

    Hello all, I want to install a remote oil filter mount for my 4.3 V6, is it neccessary to replace the filter mount bypass valve?

    Just pay attention to the flow of oil in and out of the Remote fitting. Get it backward, like my Dealer did when they installed the remote, and the Engine gets no filtered Oil because of the Drainback/Check Valve in the Filter. 104hours old, the engine had to be replaced. No cost to me.
  14. jimmbo

    Can I replace my 1994 Mercruiser 5.0 2BBL (305) with a 1998 5.7 2BBL (350) ?

    Someone else was... I was responding to them
  15. jimmbo

    Can I replace my 1994 Mercruiser 5.0 2BBL (305) with a 1998 5.7 2BBL (350) ?

    As I said above, I would take a 5 liter over a 4.3, even if the 4.3 had a few more horses. Torque is more important in a Boat.
  16. jimmbo

    Can I replace my 1994 Mercruiser 5.0 2BBL (305) with a 1998 5.7 2BBL (350) ?

    Cause some people don't want/need a 5.7 liter, and a 4.3 is too small. Given the choices of a 4.3 and 5.0 making, say 200hp, I would take the 5.0 on a heartbeat. Same goes for a 5.0 and a 5.7 making 260hp, again the larger one. My Boat was supposed be made with a 260hp 5.0 FI engine, It...
  17. jimmbo

    Good Tow Vehicle ? - Tow Rating ?

    You should know what you got wrong if you are such an Expert
  18. jimmbo

    Good Tow Vehicle ? - Tow Rating ?

    You have no clue about the 1994 Impala SS, which puts everything you post into Question
  19. jimmbo

    1988 48 special carbs

    If the carbs from one year have size 'X' jets, and the carbs from another year have size 'Y' jets, there might additional difference between the Carbs, to get a similar Fuel Delivery Curve.
  20. jimmbo

    My old Motor

    The only Grave Diggers we have had where I live have been Land Developers/Speculators. Actually they don/t dig, they just build on top
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