how many hrs till i need to rebuild
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=2278
Printed Date: November-23-2024 at 3:43am
Topic: how many hrs till i need to rebuild
Posted By: Guests
Subject: how many hrs till i need to rebuild
Date Posted: August-19-2005 at 12:53am
| i am looking at buying a 1997 ski nautique that has 500 hrs is that to many hours? some tell me at 500 hrs it is due for a rebuild. the boat currently runs good but how do you know when you need to really get in there and check it out |
Replies:
Posted By: GottaSki
Date Posted: August-19-2005 at 2:01am
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That sounds absurd. 1500-2000 hrs is typical, more if it was maintained well. A compression test is most indicative of internal condition. ------------- "There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing." River Rat to Mole |
Posted By: bkhallpass
Date Posted: August-19-2005 at 2:30am
Concur 100%. 400-500 hours is about average for 97. Anything less would be considered very low hours. Doesn't even begin to touch the lifespan of that engine. BKH ------------- Livin' the Dream |
GottaSki wrote:Posted By: AWhite70
Date Posted: August-19-2005 at 11:18am
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A friend of mine has over 1700 hours on his '82 SN 2001 and it still runs strong. It's starting to show some signs of wear but probably still has a few strong years left in it.
As long as the engines are well maintained they'll last a long time. It seems a lot of folks have some sort of mishap that leads to an engine rebuild in much shorter time. Thinks like severe overheating from a blown impeller, bad winterizing and cracked parts, etc. |
Posted By: Morfoot
Date Posted: August-19-2005 at 12:44pm
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I agree. 500 hrs is nothing. Got a bud who has an 88' 2001 and has 2200 hrs on it and it still pulls like it were knew. He also carry's about 1800 lbs of lead and water weight with him too. ------------- "Morfoot; He can ski. He can wakeboard.He can cook chicken.He can create his own self-named beverage, & can also apparently fly. A man of many talents."72 Mustang "Kermit",88 SN Miss Scarlett, 99 SN "Sherman" |
Posted By: 79nautique
Date Posted: August-19-2005 at 2:32pm
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well isn't 500hrs the recommended sevice hours for the prop shaft, in other word it would be time to replace the prop saft and strut bushings. But the engine is good to go?
------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: mackwrench
Date Posted: August-19-2005 at 4:57pm
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I would, if buying a used inboard boat, reguardless of hours, check output shaft bushing, replace raw water pump inpeller, change all fuilds (engine/trans) fuel filter, clean raw water intake strainer (if equiped) check trans cooler for restrictions (leaves trash etc.. in water line to cooler) Just commom maintenance stuff as you may not really know how boat was treated before you bought it. I have seen many engines with proper maintenance run over 2500 hours, and some with 300 hours be a POS ------------- NO LONGER A MEMBER |
Posted By: Rosser
Date Posted: August-22-2005 at 3:41pm
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Most of us are understand miles.To get a good idea just say hours x 45mph will give you miles on engine if in a car.Not perfect,but close.Also,a marine engine does not have to deal with dust.Ever.500 x 45mph = 22500 miles.2000 x 45mph = 90000.I think this sounds about right if you change your oil.
------------- 1971 Skier holman&moody 1971 Mustang holman&moody |
Posted By: Guests
Date Posted: August-24-2005 at 11:43pm
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The first PCM 351 in by boat was replaced @ 2300 boat hours,the second 351 was pulled @4993 boat hours and overhauled.Both were still running when taken out but were down on power.
The first motor was stripped and rebuilt requiring rings-original pistons reused bearings 2 exhaust valves new lifters,cam and timing chain That motor went into another boat and is still running fine 5 years on. The second engine was stripped and rebuilt, exactly the same scenario but required 4 exhaust valves,this engine is still running strong 730 hours later,the trans was fitted with new seals. The hull has 5700 hrs and is still fine.Both motors have heat exchangers and the boat was used commercialy only in salt water. How?? Great product! Maintainence,Maintainence! 150 hr servicing,filters oil ect Clean dry bilge The engine is set up to run at a contiuous hot operating temp, not fluctuating hot and cold and the boat is used not abused! 500 hrs on a 97 CC if its been looked after its barely run in!! |
Posted By: Guests
Date Posted: August-25-2005 at 12:52pm
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on the other hand you have to remember that disconnecting the wire or a bad fuse can shut down the counter. You see a lot of early 80's inboards for sale that claim 300 hrs.
Not saying that that boat is inaccurate but I recently looked at an 82 that was supposed to be under 400 hours and it was beat. I'd bet it had over 2,000 |