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  1. R

    Mercuiser 3.7 - timing problem ?

    I have a perplexing problem with my 3.7 Liter I/O<br />Occasionally, while running under load at say, 3000-3500 rpm, the engine sounds like it is holding back, and is slightly hunting for power. Then after running for about 10min, it will 'snuff' or lightly backfire, and then the...
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    Help ! - bolt size on 3.7

    Is anyone on-line who can tell me what size th e bolts are (3/8, 7/16 ?)which hold the bracket, which holds the rad overflow bottle to the block of a 3.7 liter (224) block ? My boat is at the lake, and I'm fashioning a new bracket to mount an alternator.<br /><br />Thanks in advance
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    Merc 3.7 - Timing Cover Torque ?

    Having repaired the leaking Water Pump with new Speedy-Sleeves, I am reassembling my 3.7 Mercruiser's timing cover - can anyone please advise the correct tourque for: a) the timing Cover, and b) the front pully.<br /><br />Thank you in advavce...
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    3.7L Merc - Waterpump Repair

    I am preparing to fit a sleeve to the cam to restore the cam surface under the two seals on the water pump drive. I have mic'd the shaft and it measures .872, the smallest CR-speedy sleeves measure .873 to .877. Can anyone offer comment on this, will I be all right with sleeve using some Red...
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    Con-Rod question

    I have benn working on a frozen 3 Cyl. 50HP Merc. (1998). I have disasembled the power head and utilizing quite a bit of 'Release All' and Heat, have managed to free everything up. Problem is, I used a mild metal cleaner to remove the rust from the #3 Connecting Rod. This procedure cleaned...
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    Bolt Type ?

    Simple question, although I just finished a trip to the local tool supplier, and bought the wrong socket! Can someone please advise the socket type/size for the rod bolts on a 1998 vintage 50HP Merc.<br /><br />Thank You in Advance, <br /><br />Ron
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    mercury motor ratings

    My quest continues to determine the interchangeable parts between a 1997 & 2000 vintage merc 40 & 50 Hp engines. While checking the Merc web site, I note that the 40HP/50HP/60HP motors all have the same Bore X Stoke. Can anyone suggest how the increase in HP is achieved between these models?<br...
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    Mercury 50HP / 40HP Engine-Leg Swap

    If anyone can help me here it would be appreciated, I do not have the benefit of having the serial numbers for either of these engines, however - I was wondering if I could marry the Powerhead off of a 1999-2000 3 Cylinder 40,(merc) with the Lower end from a 1997-50Hp unit?<br /><br />I have...
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    97 Merc 50-3 cly (lower end) to 2000 40-3 top

    If anyone can help me here it would be appreciated, I do not have the benefit of having the serial numbers for either of these engines, however - I was wondering if I could marry the Powerhead off of a 1999-2000 3 Cylinder 40,(merc) with the Lower end from a 1997-50Hp unit?<br /><br />I have...
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    Sand Resin - or Piant while resin is still hot

    I am in the process of replacing the transom and all of the stringers in our 11' runabout. I have sanded extensively with 50 Grit on an angle grinder to cut and remove all of the old stringers and related matting. I have epoxied the new stringers to the hull, and I am now peparing to Glass the...
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