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    riser & spacer surface space limit

    What is the space limit on the surfaces anyways? If I put a straight edge across the surface is it ok if a piece of paper can slide under the straight edge in spots? I am guessing that they won't be 100% perfect and that is one reason for a gasket.....
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    Salt Water Cooled

    I went to my local marina and asked what they suggested on a way to flush the salt water while the boat is docked. He said why bother. Salt bakes into the entire engine so even if you flush out the salt water that baked salt mixes with the fresh water and now its salt water again so it...
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    Mercruiser Service Manuals

    Now that it looks like there gone for good, Is it possible for us to post them here? Between all of us I'm sure some people saved them on their computers or whatever. Boatfix has some avail but there are ALOT missing. Not sure if it's allowed but it's worth a try.
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    riser spacer plug

    on one of my new spacers the threads were cut on an angle so the plug fits in on an angle. I know that you don't insert the plugs all the way just a few threads to seal the hole. I just want to make sure that it won't leak.
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    motor mounts

    Are there only the 2 mounts that hold the engine in place? That seems like alot of weight on just 2 mounts or everything mounted together helps with the load.
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    Superflush 400 engine flush kit

    Do they work well? Is it worth the $300.00 for the kit. It looks easy to install on my 7.4L MPI engine. I boat in salt water and wonder if its worth it or not? Will manifolds & risers last much longer? 9 yrs on originals before they were changed.
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    Brief Cranking During Winter?

    Yes or No to this? I read on another forum that it was a good idea just to crank it over a little to change the position of all internal parts.
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    searay drain plug?

    Not sure where to post this.......My drain plug only screws in a few threads and then it's tight. The plug end sticks way out. Is this normal or should it screw in almost flush?
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    98 7.4L drain plugs

    Do the block drain plugs leak? It looks like antifreeze is dripping out. maybe needs a reseal
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    Rusted Manifold Bolts??

    I have a few that you can't even tell there's a bolt there. I uses PB Blast on them ALOT and chizzeled the crap surrounding the bolt. I spent 2 hours on this so far. What are some ideas on the best way to deal with this? I can't get a good grip even with a metric socket. 1998 7.4 L MPI. I...
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    Marine speakers

    I got some Polk Audio DB 650 6.5' speakers for the boat but it's winter in Mass. I go in the boat about once a week and was wondering if it's dumb to install them now or should I wait til spring? I want to hear them now but I don't want to damage them by subjecting them to winter elements. The...
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    98 Bravo 3 rear trim limit spacer?

    Mine is cracked but not all the way through. Should I replace it? What is the part number as I can't find it? It's the white plastic spacer that fills the gap when mounting the rear pivot pin & trim cylinders.
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    another manifold & riser??

    Whats a better method. lost foam or green sand? It seems like the new lost foam method will be the wave of the future as it's easier and looks better. The question is though will they last longer and fail less? Anyone know more on this?
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    Marine Battery

    My batteries say 2001. They seem ok. I charged them and brought to autozone for a load test. It said Good but low charge. Not sure why as I charged them 1st. I charged it again and the volts were high but the next day they were 10.8 volts but the battery still cranked the engine. Is it...
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    another perfect seal ??

    I am changing manifolds & risers and according to the bottle it sayd to use it on everything(except manifold gasket of course) My question is for all the manifold & riser plugs should I use perfect seal or plumbers pipe sealant? What about the bolts, studs, etc? The bottle says use this but I...
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    Hot water tank?

    The liquid to liquid hoses were disconnected. one of the barbs is broken off the tank. Can I use an easyout and just buy a new fitting? Then I will have hot water both ways? The fitting shouldn't be molded to the tank. The others are threaded holes that fittings screw into.
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    water pump hose?

    I have a hose that runs from my engine mounted water pump way over near my hot water tank and connects to another hose (w/ a plastic barb) that runs along the other hose and this one goes below the thermostat housing. What is it for and why are they rounted way over near the hot water tank and...
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    manifold casting plugs?

    Whats a better seal? a threaded plug or a freeze plug for the casting holes on a manifold. Does water flow there or is that the exhaust chamber? My old ones were threaded but my new ones have a pressed freeze plug. I will also but high temp silicon just in case(added protection)
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    manifold/spacer & spacer/riser gasket?

    Do I use the same gasket for both? I ordered a compl kit(risers, manifolds etc) There were 2 different types os gaskets. There were 2 gaskets with the 4 slots and 2 restrictor gaskets with 2 slots Doesn't make sense to me to use 2 different gaskets. ??? 1998 7.4L MPI engine
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    anti-fouling paint copper %?

    Is more copper better? Some paints by Interlux that are more expensive have only 48%copper than some cheaper ones. Interlux ACT has 48 %copper and the boatersworld Ablative 56 has 56 % copper. The expensive micron extra has only 38% copper. I don't get it. This is my 1st boat that I am using...
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