100hr service?

So on a freshwater only boat, how often should those be replaced?

Salt water corrodes a riser in 5 or 6 years with zincs... their lifespan is affected by the waters conductivity plus the amount of electrical current created by disimilar metals... and the marina itself if you're at one. Failed risers are quite common in salt water boats. Most humans don't do preventive maintenance as diligently as regular maintenance.
I don't think I've seen a 'fresh water boat' that had a riser fail. They may last as long as the engine... or close to it. My neighbor has a '95 205 Monterey / 5.7 volvo. He uses it regularly in both fresh and salt and hasn't replaced his yet.
 
Salt water corrodes a riser in 5 or 6 years with zincs... their lifespan is affected by the waters conductivity plus the amount of electrical current created by disimilar metals... and the marina itself if you're at one. Failed risers are quite common in salt water boats. Most humans don't do preventive maintenance as diligently as regular maintenance.
I don't think I've seen a 'fresh water boat' that had a riser fail. They may last as long as the engine... or close to it. My neighbor has a '95 205 Monterey / 5.7 volvo. He uses it regularly in both fresh and salt and hasn't replaced his yet.


Great, thank you for the info. I was worried that it was time to check mine on my 2005 since it's 4 years old now. Good to know for the upgrade to a 280/300/320 as well. Definitely going to go for a freshwater only on the upgrade to avoid things like this.
 
Great, thank you for the info. I was worried that it was time to check mine on my 2005 since it's 4 years old now. Good to know for the upgrade to a 280/300/320 as well. Definitely going to go for a freshwater only on the upgrade to avoid things like this.

Going for fresh water only? That would be like prison! haha
We're all ocean boaters almost exclusively in this area but we do have some beautiful lakes to enjoy on occasion.
Don't be afraid of the salt. Sea Ray uses good quality materials that don't deteriorate like some other manufacturers do and a little preventive maintenance goes a long way.
Salt water is more dense than fresh so your boat has better buoyancy. It'll make you faster and get better fuel economy by around 10%...
 
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The other factor to consider on replacing risers and manifolds is that they usually rust from the outside in........i.e., from the exhaust passage into the water jacket, not the other way around, as you might think. Every time you run your boat, the exhaust tends to clear away some of the surface rust on the interior walls of the castings...you put the boat up for a week or 2...the freshly exposed cast iron rusts again..then, next week, you fire up the boat and do it all over again.

The riser is particularly subject to corrosion because there is a tight bend in it just a short distance away from the water's surface.

The aluminum sea water cooled manifolds and fuel coolers don't last long enough to know if they corrode in the same manner or not.

Freshwater boats are not immune from exhaust system corrosion.........it just takes them linger to show the effects.

This is also another area where an automotive comparison just doesn't work.
 
So here's one...

My boat (new) was sitting on a MM lot for 600 days before I bought it. Because the oil has been sitting so long in the AZ heat, might it need changing right away? I think I have about 5 hours on the boat.
 
So here's one...

My boat (new) was sitting on a MM lot for 600 days before I bought it. Because the oil has been sitting so long in the AZ heat, might it need changing right away? I think I have about 5 hours on the boat.

In Arizona? No moisture really and only 5 hours use... I bet that oil looks like new, smells like new and tastes like new! :lol:
It's probably fine but... for your own piece of mind, do your first service before you start running it hard. Why take a chance on those beautiful 496's?
 
Going for fresh water only? That would be like prison! haha
We're all ocean boaters almost exclusively in this area but we do have some beautiful lakes to enjoy on occasion.
Don't be afraid of the salt. Sea Ray uses good quality materials that don't deteriorate like some other manufacturers do and a little preventive maintenance goes a long way.
Salt water is more dense than fresh so your boat has better buoyancy. It'll make you faster and get better fuel economy by around 10%...


Yeah, the ocean is kinda far from Dallas, ha. Someday we will definitely have a boat on the ocean though :). But... i'm about 30 years from retirement, ha.... so it'l be a while.

Hadn't thought about the buoyancy, lol. Makes perfect sense, ha.
 
The other factor to consider on replacing risers and manifolds is that they usually rust from the outside in........i.e., from the exhaust passage into the water jacket, not the other way around, as you might think. Every time you run your boat, the exhaust tends to clear away some of the surface rust on the interior walls of the castings...you put the boat up for a week or 2...the freshly exposed cast iron rusts again..then, next week, you fire up the boat and do it all over again.

The riser is particularly subject to corrosion because there is a tight bend in it just a short distance away from the water's surface.

The aluminum sea water cooled manifolds and fuel coolers don't last long enough to know if they corrode in the same manner or not.

Freshwater boats are not immune from exhaust system corrosion.........it just takes them linger to show the effects.

This is also another area where an automotive comparison just doesn't work.

Thanks for the reply, Frank. Definitely starting to notice lots of differenes in car and boat engines haha.
 
Original question: Delaying the 100 hour service should not be a problem as long as your oil changes are current in accordance with the service manual, usually 100 hours or 1 year, whichever comes first. You have to agree that this is a conservative service interval - there is no way they would push the limits on this one. I wouldn't either, for two reasons 1) Warantee would be void 2) It's your engine's life blood - keep it fresh. I wouldn't push it to two years under any circumstance. You might get away with it if you constantly had the oil tested, but what's the point? I do it myself. $100 for 5 gallons of Merc Synth Blend, about $15 for oil filters, and maybe 30 min's per engine after you get them warmed up.

Impeller: Depends on which drive we're talking about. 8.1's - 300 is a long shot. I'm going every 2 years (150 or so). I wouldn't compare it to a tiny, little, fragile generator impeller. That needs to be replaced every year. I don't see any difference in changing the impeller in the water or on the hard. Never check it - just change it - seeing it is 99% of the work. It's easier if you remove the exhaust tubing and rotate the muffler out of the way (from our local SR mechanic, Sean).

Engine tune up: 8.1's - They don't need anything until 3 - 4 years, then consider new plugs. I wouldn't change an IAC valve as preventative. Carry a spare. They only take a second to change out (engine runs, but won't idle = change IAC valve). The are the same as car IAC's, as I understand. They don't withstand the harsh environment of boating as well as a warm, dry car engine. The parts fail, then you replace them.

Hurth transmission service - very limited. I'd change the fluid now, if you haven't done it yet, and clean the filters with solvent (if metal, which they are). Dry them, then replace. Suck the oil out through where the filters goes before replacing them. The dealers do NOT do this on a regular basis, even though it is in the service manual. The fluid lasts quite a long time. It's good to change it out to remove contaminants every few years.

If you get rich, try to avoid getting fat by continuing to stay active and instead of eating great big, fat steaks, nibble on caviar and sushi and fresh, expensive fish.

100 hour service can be a huge rip-off. The dealers do not do a lot of the service items listed. A significant number of them are "Check this," and "Inspect that." If you haven't complained about it, they have checked it and it passed. Other than out-drive service, I personally believe that the average owner will perform a much more thorough 100 hour service than almost any shop in the world. Service your batteries regularly until you change them out for service-free ones.

If your ass is snobby, consider letting it get dirty every once in a while. That'll teach it.

Most of our trips are 45 minutes or less, except for the 4 larger trips we take each year.

8.1 manifolds: Apparently, since they are made of aluminum, they are only good for right about 3 years in salt water. If you are there, GO GET THEM REPLACED UNDER WARRANTY NOW! , if you can. Do not wait for them to fail and take your engine out. Merc may be willing to put new, ceramic coated cast-iron manifolds on for you for free. They did for me at 3.5 years because my dealer pressured them to. Other engines - after 2 years of use, have them pulled and inspected yearly in salt water (maybe every 2 years in fresh?).

Promocop - I'm surprised you went ballistic. Mellow out man, life's too short.

Gary - Go back to your corner; the bell hasn't sounded yet.

Uplate - Subtle jab, and slightly below the belt. 1 warning.

FWebster - too mellow. Have a shot and jump in the fray.

Arid 240 - Now you're getting the hang of it.

Turtle Tone - Who died and appointed you mediator?

Impulse - Not very impulsive. Join Frank in a drink.

Vince - Now you know why the 340 is much better than the 320 for the do-it-yourselfer.

Chuck - You're not supposed to funny in this thread.

Glock - Thread creeper - back on topic - this is about bitchin'.

Hack - Mild sarcasm; + 1/4 lazy ass point.

L & L - Who cares?

Mag - Salty snob.

B/B - If I had that boat, I'd be putting new oil in it every freakin day.

Deniska - Did we answer your question or what?

John D - Read Frank's post about running shallow.

Smiley - Just 'cause it broke once doesn't mean you have to fix it every year.

Fishnut - Good advice. -1.

JV - So?

Jim T - Are you reading the dang thread?

Tonka - I don't have anything to say. Go back to your toys.

Groucho - Now that's good advice - just F--- it.

TM - Nice hit and run.

Bolts - Yes Sir!

2fish - Thread creep - mildy irritating; +1.

If I didn't offend you, f--- off! Now go back to bitch slapping eachother as scheduled.
 
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Original question: Delaying the 100 hour service should not be a problem as long as your oil changes are current in accordance with the service manual, usually 100 hours or 1 year, whichever comes first. You have to agree that this is a conservative service interval - there is no way they would push the limits on this one. I wouldn't either, for two reasons 1) Warantee would be void 2) It's your engine's life blood - keep it fresh. I wouldn't push it to two years under any circumstance. You might get away with it if you constantly had the oil tested, but what's the point? I do it myself. $100 for 5 gallons of Merc Synth Blend, about $15 for oil filters, and maybe 30 min's per engine after you get them warmed up.

Impeller: Depends on which drive we're talking about. 8.1's - 300 is a long shot. I'm going every 2 years (150 or so). I wouldn't compare it to a tiny, little, fragile generator impeller. That needs to be replaced every year. I don't see any difference in changing the impeller in the water or on the hard. Never check it - just change it - seeing it is 99% of the work. It's easier if you remove the exhaust tubing and rotate the muffler out of the way (from our local SR mechanic, Sean).

Engine tune up: 8.1's - They don't need anything until 3 - 4 years, then consider new plugs. I wouldn't change an IAC valve as preventative. Carry a spare. They only take a second to change out (engine runs, but won't idle = change IAC valve). The are the same as car IAC's, as I understand. They don't withstand the harsh environment of boating as well as a warm, dry car engine. The parts fail, then you replace them.

Hurth transmission service - very limited. I'd change the fluid now, if you haven't done it yet, and clean the filters with solvent (if metal, which they are). Dry them, then replace. Suck the oil out through where the filters goes before replacing them. The dealers do NOT do this on a regular basis, even though it is in the service manual. The fluid lasts quite a long time. It's good to change it out to remove contaminants every few years.
....

Now way in the world would you want to spoil a perfectly good thread by posting useful boat information??
 
Hampton, you are the new 'BOAT MAVEN' exactly what I have been saying all along...just clearer. Thanks for bring some sanity to this disucussion. Now maybe Gary can go back to his diesel corner as I never understood why he was commenting about anything to do with gassers as he hates them anyway (his own admission) I guess that's what happens when you feel the need to comment on every thread that gets posted on this blog.!
 
We had a very likeable guy in our squadron about 10 years ago who one day sat down and composed an e-mail for everyone in the squadron taking a jab at everyones' weaknesses and sensitivities. He sent it out to all. It was a hit. I'm just bored and trying to mimic his humor.

Maven? That's one hell of a compliment, unless you were being sarcastic, which if you were, good one. Almost everything I know I learned here. Sometimes I just like to help cut through the crap and actually help a guy out every now and then. I know, I know - boring. Now, who's up for a good insult?

Perhaps an argument?

The Argument Sketch

A man walks into an office.

Man: (Michael Palin)
Ah. I'd like to have an argument, please.

Receptionist:
Certainly sir. Have you been here before?

Man:
No, this is my first time.

Receptionist:
I see. Well, do you want to have the full argument, or were you thinking of taking a course?

Man:
Well, what would be the cost?

Receptionist:
Well, It's one pound for a five minute argument, but only eight pounds for a course of ten.

Man:
Well, I think it's probably best if I start with the one and then see how it goes from there, okay?


Receptionist:
Fine. I'll see who's free at the moment.

(Pause)

Receptionist:
Mr. DeBakey's free, but he's a little bit conciliatory.
Ahh yes, Try Mr. Barnard; room 12.

Man:
Thank you.
(Walks down the hall. Opens door.)

Angry man:
WHADDAYOU WANT?

Man:
Well, Well, I was told outside that...

Angry man:
DON'T GIVE ME THAT, YOU SNOTTY-FACED HEAP OF PARROT DROPPINGS!

Man:
What?


Angry man:
SHUT YOUR FESTERING GOB, YOU ***! YOUR TYPE MAKES ME PUKE! YOU VACUOUS TOFFEE-NOSED MALODOROUS PERVERT!

Man:
Yes, but I came here for an argument!!


Angry man:
OH! Oh! I'm sorry! This is abuse!

Man:
Oh! Oh I see!


Angry man:
Aha! No, you want room 12A, next door.

M:
Oh...Sorry...


Angry man:
Not at all!
(under his breath) stupid git.

(The man goes into room 12A. Another man is sitting behind a desk.)

Man:
Is this the right room for an argument?

Other Man:(John Cleese)
I've told you once.

Man:
No you haven't!

Other Man:
Yes I have.

Man:
When?


Other Man:
Just now.

Man:
No you didn't!


Other Man: Yes I did!

Man:
You didn't!


Other Man:
I did!

Man:
You didn't!


Other Man:
I'm telling you, I did!

Man:
You did not!


Other Man:
Oh I'm sorry, is this a five minute argument, or the full half hour?

Man:
Ah!
(taking out his wallet and paying)
Just the five minutes.


Other Man:
Just the five minutes. Thank you. Anyway, I did.

Man:
You most certainly did not!


Other Man:
Now let's get one thing quite clear: I most definitely told you!

Man:
Oh no you didn't!


Other Man:
Oh yes I did!

Man:
Oh no you didn't!


Other Man:
Oh yes I did!

Man:
Oh no you didn't!


Other Man:
Oh yes I did!

Man:
Oh no you didn't!


Other Man:
Oh yes I did!

Man:
Oh no you didn't!


Other Man:
Oh yes I did!

Man:
Oh no you didn't!


Other Man:
Oh yes I did!

Man:
No you DIDN'T!


Other Man:
Oh yes I did!

Man:
No you DIDN'T!


Other Man:
Oh yes I did!

Man:
No you DIDN'T!


Other Man:
Oh yes I did!

Man:
Oh look, this isn't an argument!

(pause)


Other Man:
Yes it is!

Man:
No it isn't!

(pause)

Man:
It's just contradiction!


Other Man:
No it isn't!

Man:
It IS!


Other Man:
It is NOT!

Man:
You just contradicted me!


Other Man:
No I didn't!

Man:
You DID!


Other Man:
No no no!

Man:
You did just then!


Other Man:
Nonsense!

Man:
(exasperated) Oh, this is futile!!

(pause)


Other Man:
No it isn't!

Man:
Yes it is!

(pause)

Man:
I came here for a good argument!


Other Man:
AH, no you didn't, you came here for an argument!

Man:
An argument isn't just contradiction.


Other Man:
Well! it CAN be!

Man:
No it can't!

Man:
An argument is a connected series of statements intended to establish a proposition.


Other Man:
No it isn't!

Man:
Yes it is! 'tisn't just contradiction.


Other Man:
Look, if I "argue" with you, I must take up a contrary position!

Man:
Yes but it isn't just saying 'no it isn't'.


Other Man:
Yes it is!

Man:
No it isn't!


Other Man:
Yes it is!

Man:
No it isn't!


Other Man:
Yes it is!

Man:
No it ISN'T! Argument is an intellectual process. Contradiction is just the automatic gainsaying of anything the other person says.


Other Man:
It is NOT!

Man:
It is!


Other Man:
Not at all!

Man:
It is!

(The Arguer hits a bell on his desk and stops.)


Other Man:
Thank you, that's it.

Man:
(stunned) What?

Other Man:
That's it. Good morning.

Man:
But I was just getting interested!


Other Man:
I'm sorry, the five minutes is up.

Man:
That was never five minutes just now!!


Other Man:
I'm afraid it was.

Man:
(leading on) No it wasn't.....


Other Man:
I'm sorry, I'm not allowed to argue any more.

Man:
WHAT??


Other Man:
If you want me to go on arguing, you'll have to pay for another five minutes.

Man:
But that was never five minutes just now!
Oh Come on!
Oh this is...
This is ridiculous!

Other Man:
I told you... I told you, I'm not allowed to argue unless you PAY!

Man:
Oh all right.
(takes out his wallet and pays again.)
There you are.


Other Man:
Thank you.

Man:
(clears throat) Well...


Other Man:
Well WHAT?

Man:
That was never five minutes just now.


Other Man:
I told you, I'm not allowed to argue unless you've paid!

Man:
Well I just paid!


Other Man:
No you didn't!

Man:
I DID!!!


Other Man:
YOU didn't!

Man:
I DID!!!


Other Man:
YOU didn't!

Man:
I DID!!!


Other Man:
YOU didn't!

Man:
I DID!!!

Other Man:
YOU didn't!

Man:
I don't want to argue about it!

Other Man:
Well I'm very sorry but you didn't pay!

Man:
Ah hah! Well if I didn't pay, why are you arguing???
Ah HAAAAAAHHH! Gotcha!


Other Man:
No you haven't!

Man:
Yes I have! If you're arguing, I must have paid.


Other Man:
Not necessarily. I could be arguing in my spare time.

Man:
I've had enough of this!


Other Man:
No you haven't.

Man:
Oh shut up!
 
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John,

I have 2 minor points of disagreement with your earlier post, #110.

1. Every few years with transmission service can get you in trouble and cost you a ton of money and inconvenience.........4 years ago I noticed more metal particles in my port transmission than in the stbd one. Three years ago there were even more, enough to see and make a guess at what was going on (bearing or gear failure). Two years ago I was appalled at how much ferrous metal was in the gear oil. I began considering options. Last year it was even worse, so I ran the boat 50 hours and washed the filters again. The same or more filings and now the problem has diagnosed itself..a bearing on the output shaft is going bad. I made the decision to replace the transmission, began shopping for remanufactured units, and figured a way to pull the transmission out of the boat without removing the cockpit interior and cockpit deck. I found the one and only new ZF-85IV in the US and ordered it. This one was here in 3 days; waiting longer would mean a 3-4 month wait for one to be built in Italy, and me stuck with a boat I didn't trust to make it to the island and back. While waiting for the new transmission, I built an a-frame to lift the engine and block it, then lift the transmission and move it where a forklift could reach the lift ring. A whopping 6 man hours later we were done and the boat back in the water.

My point with this saga is that regular service and checking the stuff you need to check (even if the manual says check and inspect!) allowed me to postpone a major issue until it was convenient, but more importantly, it kept me from losing the transmission 250 miles from where I have access to a superb dealer and technicians I trust. God only knows what would have happened had this occurred in a place where I had to leave my boat to the mercy of unknown technicians, boat yards, etc. and flew home to worry. This was expensive, but likely a fraction of the cost I was facing had I not serviced the transmission regularly and been able to schedule the repair on my terms.

2. I'm too mellow.......?

Perhaps, but I do this to help others and to stay active in boating when I am away from the coast and my boat. I don't particularly enjoy the angst and confrontation others seem to thrive on any more. I don't do well with the anonymity of the internet and am and more comfortable looking in someone's eyes when I chew their ass and tell them they are an idiot. I worked in and for Fortune 500 companies as a consultant solving problems they had tried and failed to solve. I am a retired, reforming type A, go for the throat, take no prisoners personality. Confrontation was a daily experience in my past life, and I can do it well. Trust me.....you guys probably wouldn't like it if I "gave it a shot and jumped into the fray", so I'll pass on that one.
 
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Frank, the guy I learned most of my stuff from, very good point about servicing the transmissions more regularly.

On the second point, I had a hard time coming up with an insult. You'll have to live with that one.
 
Thanks, Promo!

And now for something completely different.
 
I need to update my "list" on my profile page....

I do hate gas engines. I worked on a 150 HP outboard all afternoon... pain in the a$$.
(It runs properly now)
 
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I need to update my "list" on my profile page....

I do hate gas engines. I worked on a 150 HP outboard all afternoon... pain in the a$$.
(It runs properly now)

Union wages, I presume? : )
 

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