Search results

  1. jimmbo

    Ok to shorten trailer's arm?

    If you move the boat forward, you would want to move the bunks forward as well, some trailer are designed for that, by allowing the crossmembers and therefore the bunks to move, Of you place the boat too forward on the bunks the forward part of the hull be supported. My Trailer came from the...
  2. jimmbo

    Merc1150 in-line 6 cooling issues

    Is water coming out of the horizontal slots just above the Anti-ventilation Plate? The prop? What condition was the old impeller? Those engines have simple cooling system, and water pretty much has to go thru the block first. The flow pattern i the block is very simple Water enters the bottom...
  3. jimmbo

    just an enthousiast threat - 75 hp on a 14 foot piece of plastic

    I had a 140 on a 15 footer, it handled ok
  4. jimmbo

    84 90hp mercury inline 6

    You say the engine is an 84, I will assume it has a control box like this On this type. there is no separate Fast Lever. To utilize a Fast Idle control, You press the square shaped button located on the Lever's pivot point. That will disengage the Gear Shift and allow the throttle to be...
  5. jimmbo

    Johnnyrude 25 2 strokes?

    Well the Non Thru Hub model does perform a bit better in reverse, but in forward the Thru Hub version is better. More advanced Prop Design regarding Blade Shape and Rake. The gears themselves are larger and stronger. We had a 1979 25hp and a 1980 35hp, on identical boats(14 ft car toppers) . Top...
  6. jimmbo

    Mercury 140hp. Serial number 3424016

    Number 6 can be a pain. A different Compression Gauge might work better at getting in, the other way is a pain and requires removal of the front and rear cowl supprts, to tilt the pan out of the way(I was replacing the waterjacket cover gasket in this pic, back in 87). The numbers you gave good...
  7. jimmbo

    New to me Mariner 115 with oddball S/N 5794485 ?

    Fast Idle Lever? I think the control boxes from 1980 till about 1990, didn't have a dedicated idle lever, but used the 'pushbutton to disengage the gearshift from the throttle lever' system. ​​​​​​​
  8. jimmbo

    Swaping Quadrajet with Edelbrock Marine 1409 on New 5.7 Long Block Need Advice

    This about the only adapter I would consider using, flipped over of course l
  9. jimmbo

    Help me identify Trim Cyl - 50HP Evinrude - 50573B

    Looking the parts diagram; it is a butchered trim system A tilt system was quite a bit different
  10. jimmbo

    electric shift help

    That looks like a control box for 1962 - 1968 electric shifts. Hydro-Electric 55hp not included. As Racer said, the correct control box would have the ignition and choke switches integral to the control box
  11. jimmbo

    Switching from Aluminum to SS

    First Impact with my SS, a RAKER, resulted in a damaged Prop, scratched Skeg, and a bent Prop Shaft. $$$$
  12. jimmbo

    Risk of running a cracked manifold

    Did it look like this?
  13. jimmbo

    Switching from Aluminum to SS

    Cleaver type Props, if that is what you have, are not great props for recreational boating as they are Stern Lifters, That works well on Tunnel/Picklefork racing hulls as it helps keep the boat from flipping over backwards. Since I don't know how the engine is mounted Height wise on your...
  14. jimmbo

    Mercury classic 50 Outboard Reeds?

    Lots of 2 stroke don't have reeds, the carb is mounted directly to the block at a port and the piston opens and closes it. Other use a rotary valve, basically the crankshaft throw or a plate attached tot he crankshaft covers and uncovers a port in the crankcase as the crankshaft rotates Your...
  15. jimmbo

    1980 Johnson 25hp

    A drive pin prop would be used on Pre 1978 engines, and is not usable on the Post 77 engines This is from a 1981 OMC accessory catalog. The props for this engine will resemble the second prop. The part numbers though old, should permit cross referencing to newer props of BRP or 3rd party...
  16. jimmbo

    Spare Tire Mount

    Had to use the spare one day about 18 months ago
  17. jimmbo

    Lightened boat, same speed?

    Holley 650 Spreadbore 0-80552. It's the 4bbl I have. A 350 turning 5000 rpm is not going to use all of that carb, the secondaires when open 50 percent, will be more than enough. It is jetted a bit rich on the secondary side
  18. jimmbo

    Spare prop recommendation?

    Good Luck trying an Adjustable Open End Wrench on this prop. FWIW, Crescent is/was a brand of wrenches
  19. jimmbo

    Evinrude Fisherman circa 1965? E07588

    And in 65 they looked like this, more HP but smaller cover/cowl
  20. jimmbo

    14' Mirrocraft & 20hp Johnson prop selection help.

    In theory the centerline of the propshaft should be perfectly perpendicular to vertical when boat is moving. In reality that doesn't always provide highest top speed. Experimentation will reveal that. Higher trim settings may result in ventilation when engine id turned to steer boat. Higher...
Top