Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 03-05-2009, 18:01   #1
Registered User

Join Date: Nov 2005
Location: New Orleans
Boat: Nomoboat -- yay Gustav ;)
Posts: 248
Send a message via AIM to drew.ward
Upgrading older Englines?

I am looking at a few classic motor yachts and many of them have either cats or detroit diesels. One boat has two strongly running, well maintained 12 cyl detroits.

They've proven themselves a great fit for the boat for 40 some odd years. Now I understand the whole idea of not messing with a good thing, but I can't help but wonder if there are some sorts of upgrades that have become available for these thirsty beasts that could be integrated into the existing setup to up the fuel economy / performance.

Is this even a plausible idea?

You can put fuel injection or better engine controls or a new carb or exhaust on older car engines. So does the same apply with these bigger marine engines?
__________________

__________________

drew.ward is offline   Reply With Quote
Old 03-05-2009, 18:21   #2
Moderator Emeritus
 
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
Quote:
but I can't help but wonder if there are some sorts of upgrades that have become available for these thirsty beasts that could be integrated into the existing setup to up the fuel economy / performance.
I'm not sure what your expectations are.

Quote:
You can put fuel injection or better engine controls or a new carb or exhaust on older car engines. So does the same apply with these bigger marine engines?
Turbo chargers do a lot for performance but just about nothing for economy. Diesels already have fuel injection. Classic boats get that way because of what they were not because you can make them more fuel efficient. Last I checked a carb on a diesel just is never going to help, work, or even be possible at least in a functional sense.

The concept of fuel efficiency along with improved performance is not something you can get in a boat. They tend to be very fuel inefficient. It's not all bad because the fuel costs are the cheap part of the operation. The analogy between cars and boats really is not very telling.
__________________

__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 03-05-2009, 18:32   #3
Registered User

Join Date: Nov 2005
Location: New Orleans
Boat: Nomoboat -- yay Gustav ;)
Posts: 248
Send a message via AIM to drew.ward
I wasn't actually trying to say putting a carb on a marine engine...just pointing out that there are tons of upgrades for older auto engines. It certainly seems likely that in 50 years there would be some technological advances that would be applicable.
__________________

drew.ward is offline   Reply With Quote
Old 03-05-2009, 19:02   #4
Moderator Emeritus
 
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
Quote:
just pointing out that there are tons of upgrades for older auto engines.
I'm not aware of any refits for any older engines of any type that actually make a difference so long as we stick with just the engine. As for tons I think you need to make a list. Newer engines tend to be from the top down and bottom up - newer.

They may be cheaper, lighter, or they may have some properties about them that make an advantage, but I wouldn't say they fundamentally changed anything or that you can refit older engines to make them something different in a better way.
__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Upgrading a Charter Cat cameron forsyth Multihull Sailboats 45 26-06-2009 07:28
Upgrading alternator Nyssa Electrical: Batteries, Generators & Solar 10 03-12-2008 07:51
Upgrading AC System R&B Electrical: Batteries, Generators & Solar 14 27-02-2007 04:09
Upgrading Spars GordMay The Library 3 28-05-2006 05:55
upgrading charter cat cameron forsyth Multihull Sailboats 2 17-04-2006 00:41



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:00.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.