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  1. thumpar

    choosing a lower unit

    Which do you need? One is a drive the other is the lower half. If you get the whole drive you need to get the right ratio. If you get just the lower you only need to make sure it is NOT the one for a 2 or 2.4 ratio.
  2. thumpar

    EFI throttle body whine

    My throttle body has always had a high pitch whine coming from it at idle. When I first got it I thought it was just the nature of the EFI. I looked into it last year and thought it might be the high pressure fuel pump but that is not it and it is defiantly coming from the throttle body area...
  3. thumpar

    Christmas night clam haul.

    My dad rented a cottage in seabrook WA. Last night after dinner we all went out on the beach to do some night time clam digging. All 9 of us limited (15) out except a couple. We are heading out again tonight.
  4. thumpar

    Why use diesel engine oil.

    So lets not turn this into an "oil thread". I know some people use engine oil normally meant for diesel engines in a gasoline engine. What is the thinking behind it? My only guess is because of the constant speeds and high loads. I am not looking for suggestions on brand or weight just...
  5. thumpar

    My turn to do it. Clean bilge and test pump.

    So I dropped the boat in today and after getting the trailer in I remember seeing the plug on the shelf in the garage. I asked my wife if the plug was in. She says "there's water coming out the side" (bilge pump outlet). I run back to the Burb and yank it out. We had a storm come through a...
  6. thumpar

    Will 350 mag sparkplug wires work on 5.7l EFI of the same year?

    I found a good deal on plug wires for a 350 Mag of the same year as my EFI 5.7l motor. Will they work?
  7. thumpar

    5.7l EFI with cool fuel and fuel in the sight tube?

    Today we were out and just siting about 12 miles out from the launch. When we went to move the motor didn't want to start so I checked it out. There was fuel in the sight tube. I disconnected it from the flame arrestor to get it started and we high tailed it back to the launch. The sight...
  8. thumpar

    Cleaning brake line internals?

    When I go my trailer the brakes weren't working. The previous owner only used the trailer to launch and retrieve once a year so he didn't fix it. I decided to replace the actuator and have new drum brake plates that are complete units. Before I hook everything up I would like to clean out the...
  9. thumpar

    Mercruiser engine driven seawater pump compatibility.

    The original seawater pump on my boat was the multi piece housing type and has been converted to the one piece plastic type. I am looking to get an extra impeller to carry on board in case. Are the impellers between the two the same?
  10. thumpar

    Bravo installation kit. Which o-rings where?

    Re: Bravo installation kit. Which o-rings where? Thanks. What about the one around the shift linkage? Is that not part of the kit? I thought the water passage was sealed by the rectangle with the swoop in it.
  11. thumpar

    Bravo installation kit. Which o-rings where?

    I have an OEM install kit with the o-rings and water seal. I can't find the information on which o-ring goes where. I can figure out some but this is what I have: 1.424 X .103 1.046 X .139 .924 X .103 (2) .739 X .070 The first 3 are orange. I looked in the manual and it doesn't give which...
  12. thumpar

    Boating handgun carry laws

    Re: Boating hangun carry laws Re: Boating hangun carry laws Spokane is the second largest city in Washington state behind Seattle. It is far from podunk. We are still not allowed to own SBRs or AOWs. We just got the right to own suppressors. My friend can own and manufacture or modify...
  13. thumpar

    1972 Mercury 75 (7.5hp) throttle/timing advance adjustment.

    I have a friend with the 1972 Mercury 75 7.5hp with some issues. He said it would start but then start "popping" and die. I am taking a look at it and found that when using the handle throttle the timing is advanced but the ramp that is supposed to move the throttle on the carb doesn't contact...
  14. thumpar

    2005 Yukon Denali to 2003 Suburban hitch compatibility ?

    I am looking for a hitch for our 2003 Suburban and found someone on Craigslist with a 2005 Yukon Denali factory hitch made by Northern Stamping. Does Anyone know if these are compatible? I can't seem to find much info on that brand.
  15. thumpar

    Trim limit wires...no where to be found

    Re: Trim limit wires...no where to be found Here is the Mercathode diagram.
  16. thumpar

    Replace brass plugs with "blue" plugs??

    My exhaust manifold plugs are the blue plugs but the 2 on the sides of the block are the brass type and a pain to get a wrench to. Can I just replace them with the blue plugs?
  17. thumpar

    1996 5.7l EFI with Bravo 1 overheating immediately.

    Re: 1996 5.7l EFI with Bravo 1 overheating immediately. This would explain the problem. Now when I go to put the new one it which way do I twist to make the fins go in the right direction. There is not enough left to know how it was before.
  18. thumpar

    1996 5.7l EFI with Bravo 1 overheating immediately.

    I know I need to do diags but we are 2 hours from home and just want to get some ideas to brainstorm. We had the boat out 2 days ago with no problems. We decided to bring the boat to a company party on the river 2 hours from home. We get the boat launched and head out. We get a few hundred...
  19. thumpar

    Verify engine model.

    The paperwork for my new to me boat from the factory authorized dealer says the engine is a 350 mag EFI. It was replaced in 2002 and have the paperwork showing almost $8k to do it. Is there any way to tell if it truly is a 350 mag? The cover says 5.7 EFI. It has the Bravo one drive which...
  20. thumpar

    U-joint bellows orientation?

    I am installing new bellows The U-joint bellows at one end have a flat edge. Do those go vertical at the outdrive side? Also, should the water input tube be install before or after the U-joint bellows? TIA
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