Reply
 
Thread Tools Display Modes
 
Old 08-14-2012, 03:54 PM   #41
Guru
 
ben2go's Avatar
 
City: Upstate,SC
Country: USA
Vessel Name: The Caroliner
Vessel Model: Plans to build 30' Spira Sitka
Join Date: May 2012
Posts: 1,080
Quote:
Originally Posted by ancora View Post
The real question is: How many of you would repower with the same brand of engine?
I would,if I was happy with the current set up.If I knew I could get more/better economy,I'd ditch and go with another power package if it was a reasonably priced.
__________________
Advertisement

__________________
BEN'S BOAT BLOG

ben2go is offline   Reply With Quote
Old 08-14-2012, 04:29 PM   #42
Curmudgeon
 
BaltimoreLurker's Avatar
 
City: Stoney Creek, MD
Country: USA
Vessel Name: Moon Dance
Vessel Model: 1974 34' Marine Trader Sedan
Join Date: Oct 2007
Posts: 2,629
If I could just drop in a new FL120, I'd do that. If I could drop in a NA anything else with no, or extremely minor, mods I'd go with something more modern. JD or Lugger, maybe.
__________________

BaltimoreLurker is offline   Reply With Quote
Old 08-14-2012, 05:25 PM   #43
Guru
 
City: North Charleston, SC
Country: USA
Join Date: Sep 2010
Posts: 4,390
Quote:
Originally Posted by ancora View Post
The real question is: How many of you would repower with the same brand of engine?
I would rebuild or replace with a rebuilt identical engine if possible. It's a much simpler job leaving controls, instruments, transmission, etc. in place.

It's possible a more modern engine would be more efficient but it would take thousands of hours to make up the extra cost.

The engine in my boat is pretty well matched to the boat.
rwidman is offline   Reply With Quote
Old 08-15-2012, 02:17 AM   #44
TF Site Team
 
ksanders's Avatar
 
City: SEWARD ALASKA
Country: USA
Vessel Name: LISAS WAY
Vessel Model: BAYLINER 4788
Join Date: Feb 2011
Posts: 3,952
Quote:
Originally Posted by ancora View Post
The real question is: How many of you would repower with the same brand of engine?
I did.

The cummins B series engine is an extremely popular power plant. Parts are available nationwide, service is pretty easy, and if the problem is over my head there are factory technicians almost everywhere in North America.
ksanders is offline   Reply With Quote
Old 08-15-2012, 04:42 AM   #45
Member
 
Golden Gate 37's Avatar
 
City: Homborsund
Country: Norway
Vessel Name: Jungle Queen
Vessel Model: Golden Gate 37
Join Date: Aug 2012
Posts: 6
Why only Volvo vs Lehman?

Yanmar is probably the best boating engine. But maybe not for slow trawlers.

Lehman lasts forever, and should only be replaced by other similar engines. RPM up to 2500 and slow cruising will keep any engine alive for decades!
Faster engines wear considerably more than these, and should not be directly compared...

My trawler has the original Lehman engine from 1980, and it runs like clockwork!

The sparepart market is obviously different in Europe than in the US. Volvo parts is found in any city and even in small marinas, whilst parts for Ford must be ordered.

Still I will never toss out the Lehman! First of all because it runs so well, but also because of all the other gear that will need to be replaced with a faster running engine. And ofcourse, the trawler is buildt for low cruising speed.
Golden Gate 37 is offline   Reply With Quote
Old 08-15-2012, 06:48 AM   #46
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,518
I would rebuild or replace with a rebuilt identical engine if possible.

Great idea , but not all engines have a Factory rebuilt engine avilable.

The boat yard will NOT have the ability to rebuild an engine , that takes a full machine shop , perhaps with special tools for your engine.

A rebuild is stripped to the block, the block boiled to get it clean.

Then it is checked to see if there is no problem and it will be re machined.

The crank will be aligned bored as will the cam .

The cylinders will be bored and trued to 90deg to the crank.

The crank and cam will be straightened , the bearing area ground , and then bearings of the now proper size will be ordered.

I could go on , but you can see that only a specialist shop can do this easily.

Tossing in new bearings and a set of rings (most boat yard inframe "overhauls" ) will perhaps keep an old engine working a few more years , but if your going to remove the engine, it should be properly rebuilt.

Ask if you will get a "Build Sheet" or blueprint(all the bearing ID & OD and the specs for the rebuild ), if they look at you strangely , go elsewhere.

I would add the step and send the reciprocating to a "speed shop" for crank balance , rods end for end ,wrist pin& pistons matched , the flywheel balanced .

Tell the shop your normal idle and cruise speeds and they can counterweight the crank for SMOOOOTH!

Then you have a Keeper that will excel and raise the number of hours to the next rebuild.
FF is offline   Reply With Quote
Old 08-15-2012, 08:59 AM   #47
Member
 
Golden Gate 37's Avatar
 
City: Homborsund
Country: Norway
Vessel Name: Jungle Queen
Vessel Model: Golden Gate 37
Join Date: Aug 2012
Posts: 6
OK
Sorry, I did not know this was a thread abt rebuild.
I thought it was covering comparison of engines :-)

As said in Scandinavia:
"The great thing about Volvo engines is that there is spare parts everywhere, and the poor thing about Volvo is the likelihood of needing spares"
Golden Gate 37 is offline   Reply With Quote
Old 08-15-2012, 11:11 AM   #48
Guru
 
ancora's Avatar
 
Join Date: Dec 2007
Posts: 3,489
Maybe in Scandinavia Volvo parts are "everywhere", but not here in the US of A. Volvo readily admits they will not support their older products.
ancora is offline   Reply With Quote
Old 08-15-2012, 01:01 PM   #49
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,518
And the only "support" for most stuff is that the local Viking will order it shipped to himself , on your dime of course.

Volvo is also really crappy about warentee work , will pay for almost NOTHING!
__________________

FF is offline   Reply With Quote
Reply

Tags
diesel, lehman, volvo

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 10:45 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012