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  1. NHGuy

    Who knows 5.7 Performance stuff? Cam Choice...

    Hi, My boat is fairly light for it's power and I want to try to get all the oomph I can out of it. I don't have to, I just want to! The engine is a 1988 5.7 serial # with the 64cc combustion chambers. 2 years ago I tested the compression and got 170 to 185. So at that point it was still tight...
  2. NHGuy

    Thank you

    To all of you who add your knowledge and experience I just want to thank you. I've been on this forum for about 5 years and it's been invaluable to me. I'm a do it myselfer, and I work the service counter at an auto and tire company. I wish I could express the joy I am getting this sumer of...
  3. NHGuy

    Suddenly no oil pressure

    I have run the boat all of 30 minutes this season. 25 minutes from the launch ramp to my slip at around 2500 rpm. And today it was beautiful out so my daughter and I thought we would go for a ride. Normal start, ran it up to 2500 or 2800. The water was so smooth, so I gave her some gas...
  4. NHGuy

    Power steering fluid leak

    Mercruiser 5.7 Alpha One, OC417576. I just took my first lake test of the year & when I got back I gave her a good look over. I found some PS fluid on the motor so I started looking, I found a bit on the assist unit so I gave it a wipe and tested. I find that with the motor off, if I turn...
  5. NHGuy

    trim retracts 3.5" less than it should, Alpha 1

    I was putting the drive on today and found the trim would not go all the way down. Took the rams back off to be sure it was not the drive holding up, but that went down fine. I tried exercising it a little but no luck. Comes to the same spot and halts every time. When it stops it makes the...
  6. NHGuy

    Alpha 1 drive gear sticking

    I am trying to remove the drive gear from my upper. I need to check whether my drive has the small spacer, which I should have checked before. I put in a new inner yoke last season and used the 6 to 10 inch/lb rolling torque when setting it's preload. Last summer my drive had a bit of gear...
  7. NHGuy

    rear mounts

    Can I change some rear engine mounts on an alpha 1 with a portable ball joint press? Or will it require a "real" floor standing unit?
  8. NHGuy

    You guys have changed me...

    I've been working on reupholstering my boat. It's coming along slowly since I have not ever been trained in sewing, just watched my mom & gramma do some sewing when I was a kid way back. Then some videos recently. I'm still down on the beginning of the learning curve but I'm improving and...
  9. NHGuy

    Estimating Upholstery Material

    So next project is to recover the interior of my boat. I already had a sewing machine. I have watched some videos, bought some heavy duty thread and some #16 needles. I brought home a few swatches of vinyl, the machine sews it fine. I removed my boat interior and brought it in the basement...
  10. NHGuy

    Alpha 1 upper gear shimming

    I put a new input yoke on my drive last winter because it had a rough seal surface. It would not hold pressure. Now the drive whines more than before. I thought that since I was using the same gear cluster there would be no need to redo the shims. Apparently I am wrong. I thought that since...
  11. NHGuy

    Alignment issue

    Hi, Alpha 1, Mercruiser 5.7 LX with an alignment question. I have the motor out for some gaskets right now and I'll be reinstalling it in a couple of days. Before I removed the engine I had to put my front mounts all the way down to get the alignment bar in, so that's what I did. I'd have...
  12. NHGuy

    Pulling my 350 for oil pan gasket

    I am about to pull my motor to do the oil pan gasket. I'm also going to do the crank seal, the rear main seal and an oil change tube to the bottom plug. I have a set of rear motor mounts too. The oil pan gasket is a single piece of silicon rubber from Mercruiser. I bought the flat stiffeners...
  13. NHGuy

    Paint vs Galvanized

    Can I repaint or repair small rusted areas of a galvanized trailer? Ideally I'd repaint the entire thing to freshen it up. But if galvy is best left alone I can easily use it as is.
  14. NHGuy

    1930 Raised Deck Chris Craft wake

    I had to share this pic, the boat is a 27' Triple Cockpit Raised Deck Chris Craft. Owner had the local wood boat guru work the finish up to glass-like. You can see cloud reflections in the bottom of the picture. What a boat! He's had this boat for a few years, but this was my first ride...
  15. NHGuy

    water in engine oil, cracked port exhaust manifold and engine water jacket

    I went for a little ride today. When I stopped to check my oil I found water in the engine oil. Upon inspection I found a cracked ex manifold on the port side, it's on the outside. Goes along above where the center bolts are. Does the water get in the crankcase through the combustion chambers...
  16. NHGuy

    tilt & trim inoperative from buttons

    I have an 89 Mercruiser Alpha 1. I was under the dash doing some repair and somehow botched my trim controls. There is no up and no down using the 2 switches on my throttle lever. I checked the motor, it runs both ways. I checked both solenoids, they run. I plugged in some jumpers to the...
  17. NHGuy

    dieseling

    Hi, 89 5.7 Alpha 1, carb tag 5.7L 5.7 INB 1347-9662, engine serial C315645. It has Thunderbolt IV ignition. I recently put in a new distributor sensor, not for a problem - just cause I didn't like the look of the old one. It was pretty rusty and ugly. I did spark plugs (NGK) the week...
  18. NHGuy

    Open cooling vs Closed cooling

    Closed cooling is a term I can wrap my meager brain around. To me that's a heat exchanger with coolant running through the block and possibly elsewhere. Closed would indicate recirculating. Am I right? Conversely open cooling is lakewater, or other outside water through the entire system...
  19. NHGuy

    What's on your boat wish list?

    What have you done to improve your boat? What will you do eventually. And what is your no holds barred "I can afford anything" list? I have done the maintenance stuff including bellows, shift cable, plugs yearly, cap, wires, rotor, fuel filter each year. Replaced a balky fuel level sender...
  20. NHGuy

    Power steering pump leak

    I've been so busy with life and kids, just got my first day on the water this year. It's my latest start ever. So of course something ain't right. We stopped for swimming and hanging out with some friends after running for a while. I took a look under the hatch while I was there. Guess...
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