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  1. M

    anode to protect engine

    Ive been thinking about this.... In freshwater where corrosion of an aluminum intake might be minimum anyway, Why couldnt you install a magnesium anode pipe plug in the engine cooling system somewhere, like an unused hole on the intake crossover? Sure it may need replaced often (maybe not)...
  2. M

    aluminum intake

    Did a search but got mixed reviews. If raw water cooled, and only used in midwest freshwater lakes, will an aluminum intake like an Edelbrock Performer be ok without a coated water crossover? Seems like it shouldnt be a problem with water itself, I dont know if electrolysis or anythign else...
  3. M

    mercarb and engine swap

    I am going to be repowering from a 2000 year 5.0 to newer 5.7 longblock. I currently have a Mercarb and am trying to figure out if it will run out ok on the new engine. I have no doubts it will run but question the off idle and transition and am curious as to the differences in the 2 carbs...
  4. M

    brand new GM replacement engine

    Does anyone know or reccomend a place to get a brand new GM replacement 350 long block marine engine? Im talking brand new in the crate 0 hours. I have found several ads touting 'new' long blocks only to find out later they are remanifactured to new spec engines. To some people im sure...
  5. M

    350 vs 357 magnum

    What exactly is the difference between a reman 350 and a 357 magnum? Im shopping to repower my 5.0 and cant seem to get a clear answer on what the difference between the 2 is. One place I called has theem advertised as 5.7 service replacement long blocks, but when i called he said they are...
  6. M

    nauti engines

    Anybody ever dealt with Nauti Engines out of Kansas City and Lake of the Ozarks. http://www.nautiengines.com/Products.html Looking for an 5.7 engine to repower with and came across this site. Seems pretty decent on prices, they told me their engines come from Mercruiser or GM marine. 1 yr...
  7. M

    used or new engine

    I found out my 5.0 is having some head issues, and decided at this point to repower with a 5.7. Any thoughts on used Mercruiser CPO engines vs a new service replacement long block vs having a local shop rebuild one for me? Here are my options locally... Mercruiser CPO long block $2000...
  8. M

    TB5 distributor

    Is there any reason for this distributor to be grounded. Since its an electronic ignition without points, I dont think there is any reason it would need to be grounded. Im fighting what i think is an ignition problem causing a backfire started out at higher rpms 4000+ but now occurs...
  9. M

    5.0 coughing/popping at high rpms

    Need some help on a 2000 carbureted 5.0 Alpha one. At the beginning of the season I went through the carb, and put in new plugs, wires, dist cap and rotor. Took it out for a test and to dial in carb and it ran perfect. Went out a couple more times with no issues. Then took it for a...
  10. M

    prop help MW vs Solas & 4 blade

    On my 2000 Maxum 2100SR I currently have a 17P Michigan vortex prop, and was going to go down in pitch a little to get some more power but also considering a 4 blade. Would there be much gain in the 4 blade on this application? MW doesnt make a 15P 4 blade, but Solas does. How does the...
  11. M

    Thunnderbolt 5 and no knock sensor?

    I have a 2000 Maxum with a 5.0 alpha one, that im trying to do a tune up on. It says on the flame arrester cover it is a thunderbolt 5, but it does not have the knock module. I got serial numbers and looked everythign up and it all comes up TB5 even the ignition module part number. So my...
  12. M

    2000 maxxum prop help

    I have a 2000 Maxum 2100 with a 5.0 and Alpha 1. We thought it was having trouble getting out of hte hole with a skier and recently went through the carb, replaced plugs wires, cap/rotor etc, which were all needed, especially the ignition. Took it out to test and it was definitely better...
  13. M

    Mercarb float

    First off, can anybody tell me if Sierra 18-7202 carb float is brass or not. All pictures i see show it as nitrphyl, but Napa crossed it to one of their float and its brass Just curious... Next question....Anybody with experience using a brass float in a mercarb, did you have trouble with...
  14. M

    carb paint

    Im getting ready to go through a Mercarb, and there are places where the paint is chipped from taking it apart and im curious how many strip and repaint their carbs, or just clean them up and put them back together. The last one did was an older Rochester and it wasnt painted. If you do...
  15. M

    Napa carb kit

    Anybody use the NAPA Echlin line of carb kits? On my Mercarb, they looked it up and would have to order the Sierra part at 65$ or it crossed to the Echlin that was on the shelf for 35$? They said it was a direct cross so it should be exactly the same, but something makes me wonder why its...
  16. M

    mercarb power valve

    Any suggestions on how to remove this. Took carb apart, but for the life of me I cant get it broke loose and a screwdriver is starting to strip out. I left it today soaking in penetrating oil but im not sure it will help any.
  17. M

    re-jetting a Mercarb

    Im rebuilding my mercarb and wondering if anyone has messed with jetting any. The issue is a hesitation or bog off idel when pulling a skier, but why Im in there just thinking if I can help it more. I assume from the factory its prob tuned for fuel effeciency and wondering if a little more...
  18. M

    carb kit and tune up

    I am going to be freshening my carburetor(mercarb 2 barrell), and Im just curious to hear anyones opinions on different kit manufacturers. I have used Sierra before (different carb) and was fine but wonder if there is any difference in Sierra, vs GLM vs Merc kits? Same with ignition wires and...
  19. M

    Thunderbolt V timing

    When checking timing on a thunderbolt V system, when you put it into base mode by grounding the appropriate lead, does it disable all ignition advance? Tried to check timing on mine this past weekend, and even after grounding if you revved the engine it would advance so I wasn?t sure what was...
  20. M

    5.0 cam specs

    Anybody know what the cam specs are for a 2001 mercruiser 5.0? Are they roller or flat tappet? Has anybody messed with 1.6 rockers on these engines?
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