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  1. Dante04SRT

    The engine is OUT!!!! WOOT!!

    After tinkering for a few hours today, the engine is out. Pulled out really nice too - My hoist pulled it out w/o any problems at all. I just raised the bow and had tons of clearance. Thanks to all who helped w/ their advice! Hopefully next weekend I can be installing the new engine and get...
  2. Dante04SRT

    Where to attach chains on rear of 3.0?

    I am going to (hopefully) be lifting out my 3.0 Merc today. Since I have the head off, my front lift point is not currently attached; I'll just have to use a head bolt or something to chain to. How about for the rear? The service manual I've seen doesn't show a rear lift/chain point. Where...
  3. Dante04SRT

    Local places to buy alignment tool?

    Do local marine places usually carry alignment tools for the engine/outdrive?
  4. Dante04SRT

    Why won't the outdrive come off?

    I followed the directions on mercstuff.com for removing the outdrive. I undid the trim ram bolts, removed them, removed the 6 bolts on the outdrive, but it won't free from the bellhousing... Any ideas why? Any tips/tricks? I have my trailer nose all the way down and I'm trying to pull it back...
  5. Dante04SRT

    ...Making some progress...

    Well, after searching for DAYS for either a new long block, short block, cylinder head or just a used engine I've found SOMETHING. I'll be picking up a low hours shortblock either this weekend or next. I just kept thinking, "If I just put a new/rebuilt head on the current block, its gonna blow...
  6. Dante04SRT

    Interesting 2.5-3.0 head compatability comparisson

    I found this while doing some investigating on the different head styles from the 2.5 and 3.0 marine engines. http://remanufactured.com/IMG_0017.JPG I almost bought a newer style 3.0 head and it looks like the manifold wouldn't mate 100% up to it. Something to look at when searching for 2.5...
  7. Dante04SRT

    What all is involved in physically replacing a 3.0 Merc?

    I have a lead on a whole boat with a low hour 3.0 and rebuilt Alpha One. I am going to swap motors with mine and have a few questions. I've swapped motors in cars, so I understand somewhat what to expect, but the marine world is pretty different. How does the outdrive connect to the motor? A...
  8. Dante04SRT

    Understanding the 120 vs the 140

    I am having one He77 of a time finding a 140 3.0 Merc for my boat. I have found a 120 that is very close. Will the 120 interchange? I realize its going down in performance, but honestly, I don't care, I just want a running boat. How about just the head? Will it interchange?
  9. Dante04SRT

    The bad news keeps growing...

    Today, I was sifting through pictures I had taken, trying to get a view of my cylinder head and I stumbled upon this one: I noticed the crack below the #2 cylinder on the block. Went outside to see it in real life and sure enough, its a crack... Just *&$%*&# great... ANYONE KNOW WHERE I...
  10. Dante04SRT

    Will this head fit my 3.0?

    http://cgi.ebay.com/ebaymotors/Mercruiser-OMC-Marine-Cylinder-Head-2-5-L-3-0-L_W0QQitemZ190136467613QQihZ009QQcategoryZ33617QQrdZ1QQssPageNameZWD1VQQcmdZViewItem My 3.0 head has the big valves, and this one appears to have the small ones (poss 2.5 specific), however, I need a head and need one...
  11. Dante04SRT

    Best place to get new cyl head?

    I can't afford a lot, and have searched the internet, but can't find a REASONABLY priced 3.0 Merc cylinder head. Any ideas, ppl? Is there a classified section on iboats anywhere?
  12. Dante04SRT

    3.0 Interchangeablility issues?

    I am looking at a slightly newer 3.0 motor for my boat. Mine is an '87, I'm looking at a '90. Looks like the only physical differences are the flame arrestor and the electronic ignition. Is the carb any different? I primarily need the long block and I'll use all my original stuff. will my...
  13. Dante04SRT

    The machine shop just called... :(

    The head has a 2" crack in it. Unfixable. :mad: I have seen this head here: http://cgi.ebay.com/ebaymotors/Mercruiser-OMC-Marine-Cylinder-Head-2-5-L-3-0-L_W0QQitemZ190136467613QQihZ009QQcategoryZ33617QQrdZ1QQssPageNameZWD1VQQcmdZViewItem However, it seems to be FROM a 2.5 motor. I...
  14. Dante04SRT

    Old Head Gasket Out.... New One Soon!

    WOW, I can't believe how bad the head gasket looked! I just pulled it off about 10 minutes ago and it there was a full length 1" of material missing from both the 1-2 and 2-3 cylinders, the exact ones that were showing very low compression! I am really glad to see definitively that the HG was...
  15. Dante04SRT

    Parts/Gasket checklist for 3.0 Merc Headgasket job

    I was just adding parts/prices up tonight for my headgasket job on my 3.0 Merc. The part numbers for the FelPro gasket sets seem to be: 17200 - Head Gasket, valve cover, and some misc gaskets: http://www.partsamerica.com/ProductDetail.aspx?MfrCode=FEL&MfrPartNumber=17200 -&- 17301 -...
  16. Dante04SRT

    Help me identify this part...

    These are the clips that my top attaches to. One is broken, as shown, which I'd like to replace. If it is identifiable, what is it called and where could I buy one? Is it a general part or some unique type of part? Also, how does my top clip onto this? My top only has the "V" shaped braces...
  17. Dante04SRT

    Spark jumping on the surface of the coil assembly?

    I was doing a compression test tonight and I disconnected the coil from the dist before doing the test, but saw something I wasn't expecting. There was a spark jumping from the one of the terminals on the coil to the center of the coil, where the spark plug boot attaches. Attached is a pic...
  18. Dante04SRT

    Compression test complete; Understanding results?

    OK, I did another compression test tonight, both a dry and a wet test. Here is what I got, and before anyone asks, the gauge is new and tested fine on my car. --DRY-- (cylinder order is front of boat to back) #1: 39-40lbs #2: 30lbs #3: 69-70lbs #4: 165-170 --WET-- (with thick motor oil) #1...
  19. Dante04SRT

    Head gasket replacement ???s...

    I took my boat in today and got it checked out. Everything is fine with the timing, carb, basically everything -- BUT -- Its only running on 2 cylinders! There was basically no compression on two of the cylinders. Using the motor oil in the cyl trick, we determined the rings to be OK, so...
  20. Dante04SRT

    Merc 3.0 performance?

    I am curious, what is the max RPM and max speed that one could reasonably expect out of a 3.0 Merc? I realize every boat is different, but I just want something to compare mine to. I got it running a little better and have seen max RPM at around 3800 and max speed (according to speedo) at...
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