Page 1 of 2 12 LastLast
Results 1 to 10 of 15
  1. #1

    Default How many hours will the Indmar Last?

    Looking at a 2001 Outback LS with 315 hours. How many hours of life is typical, prior to major overhaul on the Chevy Indmar engine? Is 315 a lot in a boat application?

  2. #2
    Join Date
    Aug 2006
    Salt Lake City


    I average 50 -60 hours a year.. If the motor has been serviced properly (fluid changes, etc.) you should have MANY hours left. I have seen 1 year old boats for sale from ski/wakeboard camps with 500-600 hrs on them.
    Since an inboard runs at higher rpms than a vehicle, if you considered those hours as miles... say, 75 mph for a higher rpm, that would be 23,000 miles... My tahoe has 102k miles in 3 years and runs like a top..
    Since boats only get used 3-6 months a year by most, you don't hear of many that get very high... Considering my 06 has 157hrs, I would not worry about an 01 with 315 hrs. You might want to have a mechanic look it over to ensure it is in proper order... I would think that if you changed plugs, wires and fluids, it should last MANY more hours...

    2011 Launch 21V Sold... boatless replaced with a Jeep JKUR
    2006 Moomba Mobius LSV sold
    2004 Outback sold

  3. #3
    Join Date
    Dec 2007


    I agree. All things considered, it is a GM marine engine. I have a GM Diesel truck with 1180 hrs in 3 years (48000 miles) which works out to about 40 miles per hour. I guess I drive alot slower!

  4. #4
    Join Date
    Jan 2006
    Jacksonville, FL


    I have a 98 with around 600hrs. Just check the compression to make sure everything is within a few of each other.

  5. #5
    Join Date
    Mar 2003
    Springfield Missouri


    I had a 1979 Glastron Carlson until 2002 and I sold it to a friend and it is still running without a rebuilt. 98outback, do you have the PCM engine? I can't remember when they changed over.

  6. #6
    Join Date
    Nov 2003
    Land O Lakes, Florida


    1,000 hrs-no big deal with normal maintence
    2-3,000 hrs very possible with good-great servicing.

    salt water---changes everthing, but still possilbe with finatical servicing


  7. #7
    Join Date
    Jan 2008
    Pensacola, FL


    It will depend on proper maintenance and how the motor is used (i.e. wakeboard speed vs. barefoot speed). You could expect at least 800 hrs as worst case. I have been on ski teams with boats having over 1200 hrs with no problems (and still good compression).

  8. #8
    Join Date
    Aug 2004
    Lake Hickory, North Carolina


    1500 - 2000 hrs shouldn't be a prob. Just do regular maintanence. You might have to change the water pump, starter, raw water pump, etc eventually because that kind of stuff even wears out on an auto.
    hope this helps
    Learn all you can today. Tomorrow you may need to know it!
    2004 Moomba Outback. Tower Speakers, amp, ballast, ssrr ... she's a cutie!

  9. #9
    Join Date
    Dec 2006
    tally, fl


    I got to chime in here... the GM 5.7/350 is practically a bullet proof motor.
    I'm running two vehichles now pushing 250,000 miles with the 5.7 eng. My '98 mobius has well over 700 hrs, and runs great, a buddy of mine is pushing 3000 hrs and is running good. CHANGE OIL regular, watch heat guage, and lay off upper RPM range for long periods of time and she will serve you a long time ! Heck you can get a brand new 5.7 marine eng.carb to oil pan for bout $3500 from Michigan Motorz on ebay. compare that to a V-6 outboard price

  10. #10


    Thanks to all for the great information. Being new to the inboard arena, I didn't have much insight into to it. I spoke with what now appears to be an uneducated newbie salesman, who said "315 hours thats a lot", and then proceeded to show me the new $48K Moomba sitting in his showroom. I have seen a lot of inboards listed with 900 or so hours, so this reaffirms my initial thoughts. Thanks again!

Similar Threads

  1. key left on...= hours...
    By bobwells in forum General Chat
    Replies: 10
    Last Post: 03-31-2008, 12:28 AM
  2. First 10 Hours: One problem after another…
    By mtm_lsv in forum Service & Repair
    Replies: 31
    Last Post: 06-01-2007, 01:48 PM
  3. How many hours a year?
    By BaileyAZ in forum Boat Owners
    Replies: 42
    Last Post: 02-27-2007, 06:10 AM
  4. Hours on a used boat
    By splash in forum General Chat
    Replies: 7
    Last Post: 05-21-2006, 08:15 PM
  5. engine hours
    By Yellowmobius in forum General Chat
    Replies: 1
    Last Post: 05-19-2005, 11:29 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts