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View Full Version : Engine life ....



Swoop
11-20-2007, 05:07 PM
How long do you THINK or have you had the experience and held on to an engine long enough to know?
Let's say all with proper maint.
Service every 20-30 hrs
600/700 SCI Mercs
Teague 800/900
TPI 848/900/1000+ ( 200ax whipples on them)
Pfaff 700/900
I know the Mercs from what I hear go 500-600 without any major issues... Anyone know about these customs?

Swoop
11-20-2007, 05:21 PM
bored & curious - anyone awake...

DEMOMAN
11-20-2007, 05:35 PM
My guess would be around 400 hrs if serviced every 15-20 hrs and driven responsibly.

shippingguy
11-20-2007, 05:39 PM
My guess would be around 400 hrs if serviced every 15-20 hrs and driven responsibly.
I would agree with this. If treated right(not ruinning full throttle on the rev limiter all day) and serviced properly I would say the motor will last longer than you own the boat.
Mike

Throttle
11-20-2007, 08:20 PM
I would agree with this. If treated right(not ruinning full throttle on the rev limiter all day) and serviced properly I would say the motor will last longer than you own the boat.
Mike
ez there, lower your voice
you don't need to yell

kap
11-21-2007, 08:31 AM
Swoop:
Interesting subject.
However, I think to many variables come into play in the equation. The question of whether to refresh---rebuild---remanufacture a marine engine is a case by case formula---versus a benchmark hour interval.
Generally, speaking I would think a refresh at about the 250/350 interval. For some boaters that is longer than most keep the boat so they never really need to address the issue.
Respectfully,
KAP

Garrddogg
11-21-2007, 08:56 AM
How long do you THINK or have you had the experience and held on to an engine long enough to know?
Let's say all with proper maint.
Service every 20-30 hrs
600/700 SCI Mercs
Teague 800/900
TPI 848/900/1000+ ( 200ax whipples on them)
Pfaff 700/900
I know the Mercs from what I hear go 500-600 without any major issues... Anyone know about these customs?
108 hours!:jawdrop:

Swoop
11-21-2007, 09:55 PM
I would be very sad, haha

Lavey29
11-23-2007, 12:35 AM
My Eickert 850 goes for 450-500 hours before you even have to begin to think about freshening the motor according to the engine builder..

Boa1277
11-23-2007, 05:18 PM
My buddy has a Pfaff 700 with over 200 trouble free hours. He originally figured he would have to rebuild the valve train and top end at this point, but after talking to Gordy he is good for at least another 200hrs, which of course bummed him out since he wanted to do the new whipple charger.

brianthomas
11-23-2007, 05:53 PM
My buddy has a Pfaff 700 with over 200 trouble free hours. He originally figured he would have to rebuild the valve train and top end at this point, but after talking to Gordy he is good for at least another 200hrs, which of course bummed him out since he wanted to do the new whipple charger.
Would a really good synthetic oil prolong the valve train life? What exactly wears?

BrendellaJet
11-23-2007, 05:53 PM
The answer is-it depends. Depends on part selection & power output as much as it does your driving style. If you have a stock merc motor I think the 400-450 hour marks are conservative and as long as you aren't a leadfoot they should run for atleast that long.
The higher output motors I would say will get a refreshin fewer hours, not because they cant handle it but because they get pushed harder because they can handle it, thus wearing them out faster.Its cheaper to freshen a high output motor than it is to do a complete rebuild.

Boa1277
11-24-2007, 09:14 AM
The weak link of any BBC is the valve train. I imagine they want you to rebuild it sooner than later because when it goes it will take out a very expensive botom end. Billet cranks are not cheap. (not saying the Pfaff motor has a billet crank) either are really nice forged internals.

Swoop
11-24-2007, 10:36 AM
thanks everyone, its amazing how much you can learn just from posting on this site :D