If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Follow us on Facebook Follow us on Twitter
Page 2 of 2 FirstFirst 12
Results 11 to 19 of 19
  1. #11
    My Boats:
    Advantage 28ft Sport Cat w/ pair of 8's
    Join Date
    Jul 2007
    San Diego
    Quote Originally Posted by THLWL View Post

    I have a couple of posts going on this (see General Tech Support where it starts out at "Corsa...)". Merc. says it was the "modified exhaust" (Corsa Capt. Call) and not their baby. Corsa says there is nothing in their exhaust causing this. Machine shop says valve stem to guide tolerance it too tight. 4 weeks later and I finally get tired of all the finger pointing and lack of acceptance of responsibility and proceed to (hopefully) repair the motors at my costs (for now). This is a big issue locally (2 other 525's are currently failed with similar symptoms which were built about 6 months before mine) and the local Merc. Rep. is of little help. I would think that Merc. would have flown in someone from the factory for these issues which are located about 1/2 mile apart.

    Wow, the whole situation just stinks. Did it end up dropping the valve? It is very strange that 2 other 525's are having the same problems that were built around the same time period.


  2. #12
    Registered sleeper_dave's Avatar
    Join Date
    Apr 2005
    General rule of thumb, i'd say 100 miles in a car = 1 engine hour on a boat. But like any rule of thumb, it's not applicable to everything, and in most cases, it really doesn't mean anything. my old mans boat has 1800 hours on the 454's, but it's a cruiser. 180,000 miles equivalent and still going strong, by my rule of thumb.

    Take a supercharged big block engine in about the only automotive application where you'd find that nowadays - drag racing - and your 112 hours is the same as 11,200 miles. Figuring half of that in the car would be 1/4 mile at a time, that's not too far off. Although I do agree that a failure at 112 hours is unacceptable for a 525. For a 1075, that might be acceptable.

    Put a blower on your car engine, the life will shorten dramatically. Run your boat around N/A, and spend 95% of the time under 3500 rpm, and it'll life a long happy life.

  3. #13
    Geronimo36 Gold Member Panther's Avatar
    My Boats:
    36' Apache Warrior
    Join Date
    Sep 2002
    Elkton, MD
    I still say the miles to hours conversion doesn't make any sense.....

    So if X hours is equal to X miles...... what's the difference between these boats that are kept on lakes? The lake boats are "highway miles" and the ocean boats are "offroad hours"?

    I really think it's a silly comparision...I'll stick with hours, more importantly the type of hours (cruising vs. WOT).

  4. #14
    SeaRay Sundancer Gold Member tblrklakemo's Avatar
    My Boats:
    In the Slow Lane
    Join Date
    Nov 2005
    SW Missouri
    My truck, 06' silverado, has aprox 950hrs and 25k miles.

  5. #15
    Registered The Menace's Avatar
    My Boats:
    46 turbined Skater
    Join Date
    Nov 2002
    Bonita Springs, Florida
    With some guys 1 hour of running was a lifetime for that engine.

  6. #16
    Registered techman's Avatar
    My Boats:
    Fountain 35 Lightning
    Join Date
    Jan 2005
    The calculation could balance out if the car side of the equation had the car going uphill, towing a trailer at its tow limit, floored, going through 6 inches of water, in 100 degree air temp. Add a full tank of gas, a trunk full of beer kegs, a canoe on the roof, and a deer strapped to the hood.

    Add some ladies in the front and back seats for good measure. Those car to boat hours just might come close!

  7. #17
    Diamond Member #001 Charter Member C_Spray's Avatar
    My Boats:
    2000 Formula 382 with Innovation 600's
    Join Date
    Oct 2000
    Coastal North Carolina
    Quote Originally Posted by THLWL View Post
    ...Machine shop says valve stem to guide tolerance it too tight...
    That certainly doesn't sound like anything CORSA did. Exactly what happened/failed in the engines?
    Retired! Boating full-time now.

  8. #18
    Gold Member Gold Member
    My Boats:
    34 Fountain trip 300's
    Join Date
    Jan 2004
    Houston, Texas
    The end result was 1 valve on each engine struck a piston.

    Corsa Exhaust Reversion in 2- 2006 Merc. 525's

  9. #19
    Registered Playn's Avatar
    Join Date
    Jan 2001
    I don't think you can compare the two.....unless your car weights 5000-10000 lbs and you are pushing it thru flood water at 60 plus mph at WOT. IMHO

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Hours into miles conversion
    By Prostreeter in forum General Boating Discussion
    Replies: 15
    Last Post: 06-10-2007, 10:43 AM
  2. Hours to Miles Formula
    By gripit in forum General Boating Discussion
    Replies: 7
    Last Post: 10-06-2005, 08:48 PM
  3. Hours vs Miles vs Hummer
    By Maximus in forum General Boating Discussion
    Replies: 30
    Last Post: 01-07-2003, 02:06 PM
  4. Engine Hours vs. Engine Miles
    By Ricochet in forum General Boating Discussion
    Replies: 15
    Last Post: 11-04-2002, 06:17 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
All times are GMT -5. The time now is 04:59 PM.
Powered by vBulletin® Version 4.2.0
Copyright © 2016 vBulletin Solutions, Inc. All rights reserved.
Search Engine Optimization by vBSEO 3.6.1
Original Poster In Postbit provided by Original Poster In Postbit v1.0.0 (Free) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Copyright 2011 OffShoreOnly. All rights reserved.