Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-05-2007, 12:09 PM
Registered User
 
Join Date: Jan 2006
Posts: 101
'86 Saab diesel sail boat engine

Learned Gentlemen: I have a 1986 18 hp Saab diesel sailboat engine. It has 1500 hours. I was going to splash the boat a few weeks ago but got sidetracked. I have been scared to start the engine. If I change the oil, make sure the impeller takes in water and expells it through the outlet insuring that I am getting cooling, should I be scared to start the motor? It likely hasn't been started in almost two years.

Any advice appreciated. I could take it to a yard, but am in Katrina territory and they are still backed up from 2005!!!! And you know boats are more $ to service than even MBS


Thanks in advance for any suggestions (including get another hobby).
Reply With Quote
  #2  
Old 06-05-2007, 12:24 PM
Bajaman's Avatar
Registered User
 
Join Date: Mar 2005
Location: Bern, Switzerland
Posts: 713
Why are you scared to start it? Are you afraid of water in places it shouldn't be? If so, the simple answer is to take things apart and drain the water. Though water sitting anywhere in an engine for two years (other than water jacket) is cause for concern. Other than that, I can't think of any reason you should not start it???
bb
__________________
For Sale: 1982 MB 300TD
1995 Chevrolet Suburban 6.5TD

Sold: 1980 IH Scout Traveler- Nissan SD33T Diesel
Reply With Quote
  #3  
Old 06-05-2007, 12:32 PM
R Leo's Avatar
Stella!
 
Join Date: Mar 2003
Location: En te l'eau Rant
Posts: 5,367
Quote:
Originally Posted by John Doe View Post
Learned Gentlemen: I have a 1986 18 hp Saab diesel sailboat engine. It has 1500 hours. I was going to splash the boat a few weeks ago but got sidetracked. I have been scared to start the engine. If I change the oil, make sure the impeller takes in water and expells it through the outlet insuring that I am getting cooling, should I be scared to start the motor? It likely hasn't been started in almost two years.

Any advice appreciated. I could take it to a yard, but am in Katrina territory and they are still backed up from 2005!!!! And you know boats are more $ to service than even MBS


Thanks in advance for any suggestions (including get another hobby).
Make absolutely sure that the raw water intake ...

1) is open and that seawater is getting to either the heat exchanger (if equipped) or to the cooling water pump...
2) and, that after going through the engine or exchanger, the seawater is going overboard and not into the bilge.

Also, if it has a heat exchanger, make sure that the cooling circuit is filled with coolant.

Those little SAABs are neat engines. Thing One's boat in San Diego had a similar little Volvo hooked to a v-drive. It was only redeeming thing that miserable old boat had going for it.
__________________
Never a dull moment at Berry Hill Farm.
Reply With Quote
  #4  
Old 06-05-2007, 12:33 PM
Registered User
 
Join Date: Jan 2006
Posts: 101
I'm scared because I don't know that much about engines, other than it would cost $12K to replace it with a Yanmar if I screw it up

I drained the tank and put in fresh diesel and some isopropyl alcohol to boot, just in case. I am going to change the oil soon and try to force some water through the impeller and make sure it circulates. Thought about changing the glow plugs first, but probably won't. Just didn't know if there was something I wasn't thinking about before trying to fire her off.
Reply With Quote
  #5  
Old 06-05-2007, 12:35 PM
Registered User
 
Join Date: Jan 2006
Posts: 101
Quote:
Originally Posted by R Leo View Post
Make absolutely sure that the raw water intake ...

1) is open and that seawater is getting to either the heat exchanger (if equipped) or to the cooling water pump...
2) and, that after going through the engine or exchanger, the seawater is going overboard and not into the bilge.
Thanks Randy. I am pretty competent on the cooling issues and things like repacking stuffing boxes and running rigging but I am just not a motor guy.
Reply With Quote
  #6  
Old 06-05-2007, 12:36 PM
R Leo's Avatar
Stella!
 
Join Date: Mar 2003
Location: En te l'eau Rant
Posts: 5,367
I think if it were mine and it had sat that long, I'd bar it over by hand for a few turns just to make sure it spun freely and didn't have a stuck ring or was hydrolocked for some reason.
__________________
Never a dull moment at Berry Hill Farm.
Reply With Quote
  #7  
Old 06-05-2007, 12:41 PM
R Leo's Avatar
Stella!
 
Join Date: Mar 2003
Location: En te l'eau Rant
Posts: 5,367
Quote:
Originally Posted by John Doe View Post
Thanks Randy. I am pretty competent on the cooling issues and things like repacking stuffing boxes and running rigging but I am just not a motor guy.
OK. Wasn't sure where you were in the continuum...for sure, overheating one will definitely spend your money.

For a sailboat auxiliary, I believe I'd work to keep that SAAB going for as long as possible. From my distant past research on low-hp auxiliaries for small, displacement-hull cruisers, Yanmar seems to be in the habit of dropping support for small diesels after about 10 years at which time, if something significant breaks, you will get to buy a new engine. Period.
__________________
Never a dull moment at Berry Hill Farm.
Reply With Quote
  #8  
Old 06-05-2007, 02:08 PM
Registered User
 
Join Date: Jan 2002
Posts: 18,353
Is it sitting in a yard or in the water? I've started my Atomic 4 quite a few times after it sat for over a year. If it's in a yard, you could undo the cooling water suction hose and put it in a 5 gallon bucket of water to get a short period of cooling. Was any effort put into treating the engine for storage the last time it ran?
__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
  #9  
Old 06-05-2007, 03:09 PM
Registered User
 
Join Date: Jan 2006
Posts: 101
Quote:
Originally Posted by R Leo View Post
OK. Wasn't sure where you were in the continuum...for sure, overheating one will definitely spend your money.

For a sailboat auxiliary, I believe I'd work to keep that SAAB going for as long as possible. From my distant past research on low-hp auxiliaries for small, displacement-hull cruisers, Yanmar seems to be in the habit of dropping support for small diesels after about 10 years at which time, if something significant breaks, you will get to buy a new engine. Period.
Yanmar is infinitely better than Westerbeke on obtaining parts, though. The saab looks like you could eat off of it. I am going to try to turn it over a coulple of times manually if possible once I do a sea foam flush and change the oil.
Reply With Quote
  #10  
Old 06-05-2007, 03:15 PM
Registered User
 
Join Date: Jan 2006
Posts: 101
Quote:
Originally Posted by kerry edwards View Post
Is it sitting in a yard or in the water? I've started my Atomic 4 quite a few times after it sat for over a year. If it's in a yard, you could undo the cooling water suction hose and put it in a 5 gallon bucket of water to get a short period of cooling. Was any effort put into treating the engine for storage the last time it ran?
Its on the hard. I have a special suction cup hose end that I can force water through the impeller so I don't need to take off the hose, but thanks for the suggestion. I bought it out of an estate from a widow, so there is no telling what was done before it went into storage. However, when it was pulled, it got new bottom paint and a wax job, and it hasn't been back in the water since. The guys that were storing it said before the old man got Alzheimer's he would have one of his employees go over and start it, but I think it has been at least 2 years since it was done. The guy was like one of the importer freaks () here: he went to the Netherlands to the factory, spec'd the boat and went to the Port of New Orleans to pick it up personally. There are tins of varnish, wax, ect....in the cabin that were ordered from the Netherlands from the factory where it was built. He didn't even use a local sail loft--all from over there.
Reply With Quote
  #11  
Old 06-05-2007, 03:22 PM
Registered User
 
Join Date: Jul 2004
Posts: 7,103
Do not force water thru the cooling sytem without the engine runningWith the engine not running there is no exhaust gas pressure and the water may then run into the cylinders- which could ruin the engine. I see no reason you cannot attempt to start the engine. Even if there is no water running thru the raw water system it takes quite some time before you get a overheat situation- at least three minutes at idle, providing everything else is working properly. Letting it run for 90- second with no water will do no harm.
Reply With Quote
  #12  
Old 06-05-2007, 03:34 PM
bgkast's Avatar
Rollin' on 16s
 
Join Date: Dec 2005
Location: Vancouver WA
Posts: 6,528
What kind of boat is it in? I have a Catalina 25 my self. Unfortunately it looks like I may have to sell it soon (New house, new baby).
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
Reply With Quote
  #13  
Old 06-05-2007, 03:54 PM
oldiesel's Avatar
Registered User
 
Join Date: May 2007
Location: florida
Posts: 677
Thumbs up

As was already said,be sure to turn it thru several revolutions by hand,you should feel some resistance from compression but turning slowly it should rotate.If you come to a spot that feels solid and does not give to continued pressure STOP and find out why. If i were doing it i would put a new impeller in the raw water pump on ant engine that has been sitting for a long time.
My$.02 Don
PS Looks like alot of boat guys here!
Reply With Quote
  #14  
Old 06-05-2007, 03:58 PM
Registered User
 
Join Date: Jan 2006
Posts: 101
Quote:
Originally Posted by MTUpower View Post
Do not force water thru the cooling sytem without the engine runningWith the engine not running there is no exhaust gas pressure and the water may then run into the cylinders- which could ruin the engine. I see no reason you cannot attempt to start the engine. Even if there is no water running thru the raw water system it takes quite some time before you get a overheat situation- at least three minutes at idle, providing everything else is working properly. Letting it run for 90- second with no water will do no harm.

Makes sense. I do it on outboards when flushing them all the time, but only for a second--I put the ear muffs on, turn on the hose then crank it up and have never had a problem, but may not do that anymore. I think I see what you are saying--even in the water it may take a few seconds for the water to get sucked up by the impeller and begin to circulate. But, I was thinking that a vacuum holds water in the jacket after you shut the engine off--as long as this boat has been up I know there is no water in the jacket.
Reply With Quote
  #15  
Old 06-05-2007, 04:00 PM
Registered User
 
Join Date: Jan 2006
Posts: 101
Quote:
Originally Posted by bgkast View Post
What kind of boat is it in? I have a Catalina 25 my self. Unfortunately it looks like I may have to sell it soon (New house, new baby).
Congrats on the new house and new baby. I got it BECAUSE I just bought a new house and have a new baby

It is a 27ft. Van der Staadt sloop.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 11:17 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page