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  1. Dukedog

    Crank end cap seals

    tha two seals and o-ring making up tha end cap assembly?.. if so, not really anyway ta "test" 'em that i know of.....
  2. Dukedog

    Mercury overheating problems

    first we're on a computer.. hard enough if ya standin' next to tha motor.. so dialogistic's here is basically a "guess".. i can only recall two motors (all 2.0, 2.4 or 2.5's.. only motors i used) like symptoms over tha years.. never found tha reason causin' tha problem by doin' one thing at a...
  3. Dukedog

    Mercury overheating problems

    pumps can look pristine but tha stainless ride plate and cup inside housin' can be worn and ya never know it.. if pump is all good tha only thing between it and top of tha block where ya get a pressure reading would be powerhead gasket and adapter plates/gaskets.. checking divider plate and...
  4. Dukedog

    Mercury overheating problems

    ya say ya did tha pump? a complete kit (housing, impeller, ride plate, base, gaskets) or jus impeller?
  5. Dukedog

    Another Model year and HP thread

    let me know if ya get it..........
  6. Dukedog

    Another Model year and HP thread

    135-150-175-200 With Serial Numbers United States - 0G960500 and Above.pdf that didn't work.... send me an email addy and i'll send ya tha pdf file for it............ or part number 90-878079
  7. Dukedog

    Mercury 200 problem.

    (y)
  8. Dukedog

    Mercury 200 problem.

    check with tux974.. good guy.. knows his motor stuff.. always good parts and such. 3- 2pc plates large exhaust ports. (screamandfly.com)
  9. Dukedog

    Mercury 200 problem.

    2.5 opti? (screamandfly.com) picture "rock" posted is a modified one piece plate.. tha one your lookin' at should be a two piece.. it will have two external discharge holes.. a large one and a small one.. you will need ta plug tha large one.. its for compressor coolin'....
  10. Dukedog

    Mercury 200 problem.

    join this group... i know someone there has tha answer.. i posed tha question there and will let ya know what they say as soon as someone answers..... Scream And Fly Powerboat and High Performance Powerboating Discussion Forums
  11. Dukedog

    Mercury 200 problem.

    sorry, can't answer that.. i've not fooled with tha opti parts enough ta know.. but i'm pretty sure there is gonna be a difference???.. maybe someone thats "in tha business" can answer that...
  12. Dukedog

    XR2 150HP won't rev past 3,000 RPM?

    when ya get done with all tha adjustin' be sure ya have a slight gap between throttle cam and linkage roller when at idle.. don't remember if manual tells ya that.. that is ta insure that idle timin' and idle circuit of carbs controls rpm and/or speed.. again numbers don't mean much!.. i've had...
  13. Dukedog

    Mercury 200 problem.

    thinkin' PM has a slightly bigger exhaust openin' vs. production blocks best i remember.. don't hold me to that though.. any 2.5 "high performance" gasket will work though..
  14. Dukedog

    Mercury 200 problem.

  15. Dukedog

    Mercury 200 problem.

    a 2.5 (even tha 225 PM) will run ona 2.4 mid... can get ya part numbers but if ya don't know what ya lookin' at you probably won't know tha difference... if this is tha case ya need ta start completely over with tha adapter plates.. there are several combinations you could possibly have and if...
  16. Dukedog

    Mercury 225 Offshore- LOSING MY MIND PLEASE HELP

    if it lost a magnet (they are glued) there would be no doubt... have you tried squirting (pre mix) straight in to tha carbs when it starts ta "hunt" or shut down?
  17. Dukedog

    Mercury 225 Offshore- LOSING MY MIND PLEASE HELP

    have ya tried a different ecu?
  18. Dukedog

    XR2 150HP won't rev past 3,000 RPM?

    sounds like ya on tha right track............ trash tha idle stabilizer.. reset timin'..............
  19. Dukedog

    Another Model year and HP thread

    https://www.mercruiserparts.com/merc-mar-2-5l-carb-0d935271-and-up that one is for Hi. Perf. motors..................
  20. Dukedog

    XR2 150HP won't rev past 3,000 RPM?

    first thing you need is an OEM manual for it................ (ebay). like said comp and fire check... comp 110 or more. Things already done (I'm assuming correctly): - Mechanic set the timing & carb sync 4) clogged carbs -> the bottom one was rebuilt and I believe the other two were examined...
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