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  1. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    those are drilled holes in tha flat part of tha can (3/8" or 1/2", don't remember which one, five on each side) right above tha cav plate.. tha can liner is also pulled.... not back yard butchery.. drilled and/or cut anywhere else is butchery.. all hi performance "bass" cans are drilled there...
  2. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    idle sound tells tha tale!.. sounds really good.. someone knew what they were doin' with tha removing tha can and where they drilled tha exhaust.. will go well on your tinny thinga ma jig......😎
  3. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    gotta disagree ta some extent.. if we didn't turn our motors (stock high production most rated at 8200 max) at 10 grand plus we might as well put it on tha trailer..... but thats "hot roddin".......:devilish:
  4. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    what hull ya gonna put it on?
  5. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    yep,, still original gear case is unusual for one that old.. thats a very good sign of how well it was taken care of! here's another site will identify "what it is" jus not tha year... but crowley seems ta be better at both...... https://webapps.brunswick.com/literature/literatureSearch.do i...
  6. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    1992 xr6................. tha first pic shows a small case so it still original.... https://www.crowleymarine.com/mercury/oem-parts/outboard/1992/1150453md?mdl=XD4RZI&q=0D144802
  7. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    there is one "sticker/plate".. its on tha tha clamp bracket.. tha serial number also will be stamped on tha motor at either tha welsh plug or tha port side block flange usually... 20"... '91 ta maybe '95. has tha small 1.78 ta 1 gearcase, plus cowl changed in '96... max from merc is 'bout 5800...
  8. Dukedog

    1998 40ELPTO gear oil from weep hole?

    thats exactly why he needs ta identify it.... computer pictures jus don't cut it....
  9. Dukedog

    1998 40ELPTO gear oil from weep hole?

    if its not commin' from a seal then where/what is commin' from??? besides, he has not confirmed jus what it is thats drippin'???.. looks like gear oil in tha pic but that don't mean nothin' ona computer.......... other than tha drain/fill holes tha only way in and/or out a gear case is a seal...
  10. Dukedog

    1998 40ELPTO gear oil from weep hole?

    seal can sometimes give a false positive.. depends on where it stops in relation to tha sealin' surface if tha flaw if is very minor in either... there is absolutely no way for gear oil ta get to that weep hole.... except thru a seal.... he will get it figured out one way or another.... calf...
  11. Dukedog

    1998 40ELPTO gear oil from weep hole?

    like i said, tha only way out for any fuel/oil burnt or unburnt is thru tha exhaust... it drips out tha bottom of tha gear case and/or prop.. not thru a weep hole/drain......................
  12. Dukedog

    1998 40ELPTO gear oil from weep hole?

    its gear oil.. your motor oil is mixed with fuel.. easy ta see... put a match to it... there is absolutely no way for fuel/oil mix to exit except thru exhaust unless there is something major happenin' with tha motor... doubt it would even run... as for tha pressure test.. don't know on this...
  13. Dukedog

    1998 40ELPTO gear oil from weep hole?

    leaky seal under tha water pump............. unburnt fuel mixture goes out tha hub with exhaust....... if bad enough it makes tha prop look nasty............ there is only supposed ta be one way for gear oil ta exit tha case and thats tha two drain/fill plugs.. if its leaking anywhere else ya...
  14. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    understand completely.. lost my best friend 4 years ago myself.. jus happen ta be my 48 year old son........ i'm gettin' pretty short on tha clock also...
  15. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    call 'em whatever ya want.. but if ya say "steel sleeve" most in their right mind know exactly what ya talkin' about................. its actually an iron alloy.
  16. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    tha "XR4 is and was tha only 2.4 steel sleeve motor from production ever built".. it was offered in '91 and was a 2.4 but was in a "fat block" design and over lapped tha XR6 in '91.. from 1991 everything from production was steel sleeve motors (no more chrome anything) and in tha new design...
  17. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    '91 (first year of tha "fat block") anything is gonna be a steel sleeve motor... '91 175 should be a bottom guided steel sleeve 2.5 motor......... would be almost tha same as tha XR6... different tuner and carburetors.... normal size (4 3/4") gear case.
  18. Dukedog

    How to choose an old 2-stroke 150/175 Merc

    can't go wrong with tha XR6 in my opinion... simple and very dependable (pre cdm ign.).. depending on year of tha XR6 as to which gear case it has... tha XR4 and first years of tha 6 had tha small case with 1.78 gears and tha only motors ta have a small case.. tha 4 being a tad weaker (smaller...
  19. Dukedog

    1990 Mercury 175 Overheat warning possible causes?

    jan... you would be ahead by removing tha lower cowls also.. four 1/4 20 screws (either 3/8 or 5/16 head under neath tha cowl.. a little more work but well worth it for removing and replacing tha poppet.....
  20. Dukedog

    Spark Plug Half-Fouling

    (y)
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