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  1. Dukedog

    What should i do ?Need some insight on 87 merc 181pro

    up ta you.. spend a coupla grand on it ta make it pretty good and ya still have an old (but decent) motor.. or do it yourself.. get an OEM manual for it and follow it to a T for tha most part and ya MIGHT getaway with hone and re-ring only ta give it a little boast...21 inch?.. depends on...
  2. Dukedog

    What should i do ?Need some insight on 87 merc 181pro

    if your comp is actually what ya say tha motor is really tired ta start with.. should be at least 110+ or better for a healthy motor.... ya might try another gauge ta compare.. tha motor needs ta turn up with whatever prop/height ya end up at... tha 56 ta 5800 is a lot better on tha little...
  3. Dukedog

    1995 175 switch box problems. I messed up.

    tha 12 is justa superseded number as tha years went by.. tha original switch box (like in 1976 ) was 332 7778 A1.. as long as as it is a 332 7778 A whatever its all good for your motor.. think last number for producton (and maybe ProMax, 260's) was A14...
  4. Dukedog

    Jack Plate for a 1990 Mercury black max 175

    if ya happy with performance and handlin' of what ya got then jus leave it.. tha jack plate has its benefits though.. mostly in performance and a ill handlin' boat.. it also will eliminate havin' ta remove and reseal tha transom bolts and problems with access to 'em if motor removal becomes an...
  5. Dukedog

    Please help cant find the correct wiring digram

    can't find a dia for a 16 amp system.. only a 9 and a 40!!! rectifier you should have two yellows (from stator) and one red (from + batt at start solenoid or from harness) plus a gray (makes to either yellow) for tach at rectifier.. a red and a yellow from regulator to rectifier. all reds are...
  6. Dukedog

    Would like to verify my 1990 2.4 l is actually a Bridgeport powerhead..

    understand how ya feel.. been there way more than once.. it is a 200 for sure though.. it has tha marking and its got a horizontal front half... looks ta have had a tough life.. been over heated.. oiler disabled? looks like it.. could be fuel, and/or electric?.. jus keep pluggin' and you'll find...
  7. Dukedog

    Would like to verify my 1990 2.4 l is actually a Bridgeport powerhead..

    no..... should run circles around it......... tha only one of less horse power that will run with tha 200 is "SOME" 175's.. tha ones that actually use tha 200 block half..
  8. Dukedog

    94 mariner 150 hp efi

    what brand (manufactor) reg/rec. did ya get?
  9. Dukedog

    Would like to verify my 1990 2.4 l is actually a Bridgeport powerhead..

    i can guarantee if its got 200 stamped on tha plug you won't find a bridge in it................... that stamp was only on hi performance oval ports (actual same as production block, jus naked) and 200 production motors
  10. Dukedog

    Would like to verify my 1990 2.4 l is actually a Bridgeport powerhead..

    has (had)oil injection.. has mech fuel pump.. has 200 stamped on tha welsh plug.. all 2.4 200 production motor stuff.. .
  11. Dukedog

    Would like to verify my 1990 2.4 l is actually a Bridgeport powerhead..

    not even hi performance much less a bridgeport.................... 200 production motor.
  12. Dukedog

    Converting 2.4 Merc EFI to 200 carbs

    which carbs?? wh, wmv, wmh?.. you will need ta use tha jetting that matches tha carburetor number you are using............. although if its tha WH series (which is what pre '91's use) tha vent jetting is really not important.. some don't use any vent jetting even if it calls for 'em.. will...
  13. Dukedog

    Need help with a 87 150 Merc has a couple issues

    does it "sputter" ta a cadence or jus a random sputter??? ya might take tha cowls of and run a screw driver ta ground around tha spark plug wires at different rpm.. best ta do it in tha dark.... lotsa folks over look tha wires jus cause they "look good"....
  14. Dukedog

    2001 merc 150efi 2 stroke tempature

    tha pressure gauge will tell all.. most temp gauges can and will be all over tha place.. jus make sure your over temp warnin' buzzer is workin'.. its a lot more dependable than any metal ta metal temp gauge sensor.. get yourself a temp gun and be sure if ya worried 'bout it................ jmo.
  15. Dukedog

    1980's Mercury 175 power trim

    most everything i'm familiar with is tha single ram stuff.. most 3 ram stuff that we fixed we jus went with a whole clamp and trim assy. replacement.. hydraulics we left ta a whole 'nother hyd. shop.. drop off and pick up when they called.. i do know that tha main thing ya gotta make sure of is...
  16. Dukedog

    1980's Mercury 175 power trim

    first your motor is: 1986 Outboard 175 [ELPTO] these are really good, stout motors when healthy.. 200's got nothin' on 'em.... next tha jack plate should not come inta play at all when ya wanna pull tha one side of tha clamp.. ya really need some type of support on tha motor doin' it that way...
  17. Dukedog

    1990 Mariner 150

    are you doing this by holding tha key pushed in? how old are tha fuel lines and bulb? has tha mech. fuel pump been rebuilt or replaced? carburetors been cleaned and refreshed? fire at all six been established? link/sync timing been changed? have ya done a comp test? these are jus tha start of...
  18. Dukedog

    Does the Lower engine mount wear out?

    no, you CAN cut tha bolts and put tha new ones in backwards... you did not mention cutting tha bolts......... thats tha hot rod/DiY'er way and not in any manuals.......
  19. Dukedog

    Does the Lower engine mount wear out?

    won't work that way with these type mounts Chris.. PH has gotta come off for top and bottom mounts........... if merc had put tha bottom bolts in opposite tha way they are it would.....
  20. Dukedog

    2 Stroke oil

    https://www.academy.com/p/pennzoil-marine-premium-plus-1-gallon-synthetic-blend-2-cycle-engine-oil?sku=1-gallon&gclid=ef2255ebd78a128d4e5d316f05ee88a4&gclsrc=3p.ds&&ogmap=SEM|PLN|MSFT|SSC|c|OUT|IM|Non-Brand-Shopping-SmartShopping-Outdoor|Outdoor||427270730|1286429031795608&msclkid=ef2255ebd78a128...
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