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  1. mr300z87

    Yamaha 115 stroke flush line clogged

    Hi All, New here on the Yamaha thread, and it been a while since on the forum at all, my BB 7.4L MerCruisers are running good. I recently bought a 2002 Sea Pro CC 180 with a 2002 Yamaha 115 2 stroke. She runs great. Unfortunately its getting cold here in NJ and I have only had her out once...
  2. mr300z87

    Milky oil from oil cooler failure

    Quick update. Did 5 quick oil changes with 4 quarts each time and dumping the oil filter, 5-10 runs. The I did a full oil change and new filter then took her out for a nice 30 min run at 3400 rpms. All seem good. I will do another full oil change before winter storage in a couple month...
  3. mr300z87

    Milky oil from oil cooler failure

    Thats the plan!!
  4. mr300z87

    Milky oil from oil cooler failure

    Hi all, It been a long while since I been on here and I hope everyone is doing well. Last week I discovered that the oil cooler on my 7.4L Bluewater inboard had failed and I had milkshake coming out the exhaust with the cooling water. The oil cooler has been replaced, no more milkshake in the...
  5. mr300z87

    496 bravo 3 3000 RPM plus overheat

    Thanks AD. Quick update, they picked the boat last night and we took her for a test ride. 4500 RPM and 44 MPH on the GPS. Both engines ran at 170 degrees. We took her out for another ride tonight.
  6. mr300z87

    496 bravo 3 3000 RPM plus overheat

    Its been a while since I have been on the forum, I just lost my wife to a 6 month battle with cancer and am trying to recover from it. Since I am feeling OK I figured I would post an update to this thread. After we serviced the heat exchangers all seem OK and they took the boat on a 30 plus...
  7. mr300z87

    1972 Checkmate MX-15 Rebuild

    Zool, that looks beautiful. Cant wait to see her running around the bay.
  8. mr300z87

    496 bravo 3 3000 RPM plus overheat

    This was the post about the Y fitting?
  9. mr300z87

    496 bravo 3 3000 RPM plus overheat

    A few weeks ago we rodded both heat exchangers which seems to have helped. They took the boat on a 2 hour trip from their marina to Altantic City 3K most of the way no overheat alarms. However he decided that this fall when the he would like to put through hulls in for engine cooling. This...
  10. mr300z87

    1996 Century Boats 1800 Center Console Refit and Modernization

    Zool, The Ocean is a beautiful boat good luck with her. At our new marina this year my SR Dancer is surrounded by Sedan Bridges. What are your plans for your SR? Want to sell me your interior. LOL.
  11. mr300z87

    1989 5.7L 4brl won't idle below 900 - 1000 rpms

    I may have forgot to mention if I adjust the the idle screw to lower it to normal 700ish rpms the engine stalls and will not fire or idle again without added throttle. Once I re adjust the idle screw back up the 900 + RPMs she will run fine all. The idle screw has to be turned to the point of...
  12. mr300z87

    1989 5.7L 4brl won't idle below 900 - 1000 rpms

    Yesterday I helped another friend prep his boat, my old Invader. After gear oil change, flat tire repair and a failed attempt to replace temp over heat sensor her 5.7L Rochester 4brl bravo 1 fired right up. This is a reman 5.7 with all the original bravo bits and pieces from the original...
  13. mr300z87

    496 bravo 3 3000 RPM plus overheat

    AD, thanks for your post as well your knowledge is always welcome. I saw in your signature file a new boat did you get rid of the Formula and the other boat you had , can't remember what it was? Haven't been on much. Loving life with inboards.
  14. mr300z87

    496 bravo 3 3000 RPM plus overheat

    Thanks Ted, I read through your bravoitis thread. I found most of your threads useful as the engine in my last boat was the same Gen 6 7.4L as your SS except mine was carbed. If it is possible to do this job on the 03 PC31 it's got to be by someone alot younger and skinnier than either of...
  15. mr300z87

    496 bravo 3 3000 RPM plus overheat

    One other comment if it is bravoitis through hull is the only way to go. After poking my head in there the other day even with the exhaust off I don't think there is a way to replace the pickup hoses without at least 1 engine coming out.
  16. mr300z87

    496 bravo 3 3000 RPM plus overheat

    Update! Saturday we took the end caps off the HEx and rodded as many tunes as possible, soom the casting prevents the stiff 1/8 rod we were using from fitting. We were doughtful this was going to work but was relatively in expensive to try. Did a test run in pretty snotty conditions at 3k RPMs...
  17. mr300z87

    496 bravo 3 3000 RPM plus overheat

    We have had no time to do any troubleshooting but my friend is in denial that this is Bravoitis. I told him we need to check water flow first. He want to drain the cooling system and rod the HEx? We had the port drive off for some other maintenance but not the Starboard drive which is one...
  18. mr300z87

    496 bravo 3 3000 RPM plus overheat

    Thanks for the reply Ted, last night after speaking to my marina manager who said sounds like bravoitis I read through your thread on fixing it and since I used to own a 7.4L bravo I know how tough access is. The way the 04 PC 31 is set up I'm not sure if it's even possible to do with engines...
  19. mr300z87

    496 bravo 3 3000 RPM plus overheat

    Thanks for the response, we decided not to do any troubleshooting this weekend. Our NJ forecast is for beautiful 70s and sunny. Better to have partially usable boat then stuck at the dock.
  20. mr300z87

    496 bravo 3 3000 RPM plus overheat

    Yesterday I help my friends launch their 2004 Formula 31PC with twin 496 mag Bravo 3. They are closed cooling, with about 400+/- hours. Raw pump impeller was new last season he was told by the mechanic who used to work on it for PO the Exhaust was new and never run when they bought the boat in...
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