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Old 07-23-2013, 02:12 AM   #21
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Ok, Boat is performing as I thought it should.. took all the advice, took the weekend.. found out my boat is 1.81, my new drive is 1.81
changed out the outdrive, and there it is.. boat is hitting 35-36 mph and cruising nicely at about 28-30.. rpms at wot with 19p prop about 4500 ( if the tach is correct)
I believe the drive I pulled off the boat was not matched in gear ratio and was not the OEM drive, when I pulled it there were yellow marks on the inside that look like salvage part numbers..

so after a day of running it, its beginning to bog down at the upper rpms..similar to running out of gas.. so, I am thinking to change out the filters and check the fuel lines.. but overall, a huge difference.

I know its not a speed boat, but as long as it gets us around close to where the other boats similar to ours are running I will be ok with it until its time to move up to a 3200
Thanks everyone for helping out on this mystery!
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Old 07-23-2013, 11:41 AM   #22
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Jr, glad you resolved the performance and the new drive payed off.

New issue bogging at high rpms, change filters, pour the old gas from filter into a clear container and let it settle and look for signs of water. Also test fuel pump pressure ~7 psi for mechanical pump and ~30 - 40 for electric pump. Could also be time to rebuild carb if has one else dirty injectors? more data will be needed for better advise but start with the filters and look for water in gas.
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Old 07-23-2013, 02:06 PM   #23
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Thank you Mike! The mechanic that was down there told me the carb needed attention so, this is probably what I am dealing with..I will do the filters today if the rain quits and hopefully get the carb off and to a shop for a rebuild, might just purchase a remanufactured one from national carb, i have had success with them in the past.
will keep you posted!!
Thank you all for your interest on this journey
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Old 07-23-2013, 04:13 PM   #24
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Always a pleasure to help fellow boaters
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Old 08-07-2013, 11:31 AM   #25
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So after a couple of weeks of fun boating...the bogging issue returns.. however briefly, because the Raw Water pump went shortly after and chewed up the fuel pump. There was a little chatter and then it ran terribly at all rpms.. I am wondering if this was going all along. I did replace a few things,
the Carb was old and in need of a rebuild, so I decided to buy a remanufactured marine carb, I replaced the fuel pump, lines and water seperator.. all was running just fine.. and the fuel pump started chattering.. got it back in, took off the fuel pump.. the arm was worn down bad and the cam or bearings on the pump was spinning freely. A little frustrating, but ordered parts, a week or so to get here and I hope that solves this issue for now.
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Old 08-07-2013, 02:02 PM   #26
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Photos of that would be super, Jr, got some to share?
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Old 08-07-2013, 05:44 PM   #27
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Jr, sounds like this could have been the problem all along. So new fuel pump and new or rebuilding raw water pump that drives the fuel pump. If rebuilding pump did you verify housing is Ok and that play in the bushings did not cause the problem? Pictures of the broken parts will interesting to see.
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Old 08-07-2013, 09:24 PM   #28
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Hi There ! I will take pics when I go back down there.. or when I take the pump off. I ordered the Mercruiser replacement Pump Assembly with fuel pump..
$770 with shipping expedited.. dont want to chance a two week down rather than one.. being that it is now August and the warmer weekends are numbered..

Mike I believe this was the problem for the bogging all along.. however not sure about the rpms and the drive issue? or could it be?
Will that engine make more RPMs if it is trying to get fuel? I was thinking about this today.. is that possible?
Thanks!!

How do I post pics to this forum I dont see a picture option here..
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Old 08-07-2013, 09:54 PM   #29
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Trying to add pics just so I know how.. anyway if this works this is my boat..securedownload.jpgsecuredownload.jpgsecuredownload.jpg
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Old 08-07-2013, 10:17 PM   #30
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If the engine is starving for gas then it can't make full power. The drive ratio may still have been an issue, hard to say. At this point just need to install new unit and see how it performs.
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