Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 30-10-2011, 18:26   #1
Registered User
 
Tristan's Avatar

Join Date: Aug 2006
Location: Cruising
Boat: Custom Ketch Asperida
Posts: 211
Perkins Aftercooler

Maybe this is not the right forum to ask, but I hope somebody might have some experience with it. I have an old Perkins 6 354T. The aftercooler has corroded very badly.
It 's difficult to find a replacement and even if I can, it costs a small fortune.
My question is: How much power would I lose (in percents) if I run a turbocharged engine without an aftercooler .
T.
__________________

__________________
Tristan is offline   Reply With Quote
Old 30-10-2011, 18:36   #2
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,352
Re: Perkins Aftercooler

I cant answer your question, but there were a couple of those engines for sale on Craigs list up here in the northwest pretty cheap a few months ago. Not sure if you could link up for parts or not.
__________________

__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 30-10-2011, 18:52   #3
Registered User

Join Date: May 2008
Location: daytona beach florida
Boat: csy 37
Posts: 2,844
Images: 1
Re: Perkins Aftercooler

friend of mine has a 34' trawler with that engine. his aftercooler also broke down on him and he didn't want to spend the big bucks to fix it. he's been running without it for the past couple of years. he thinks his fuel mileage has improved and the loss in power was not that great at the speeds he normally cruises.
__________________
onestepcsy37 is offline   Reply With Quote
Old 30-10-2011, 19:30   #4
Registered User

Join Date: Jan 2010
Location: Gloucester, MA
Boat: CS 36t
Posts: 387
Re: Perkins Aftercooler

This will have a large effect on performance and it will vary will rpm. Without the cooler, the intake air will be hotter and therefore less dense. There will be greater losses through your valves and the engine will tend to run richer. At low load, this can occasionally be a good thing because it will make your combustion and expansion more efficient. At higher loads, you will not have sufficient oxygen to fully burn the fuel hurting both power and economy.

Another thing to be concerned with is your EGT's. Without the cooler, your exhaust gas temperature will be higher potentially to the point of being harmful to the engine. Without a pyro gauge, I would not run without the cooler.
__________________
klem is offline   Reply With Quote
Reply

Tags
perkins

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
Perkins Fuel Injection Pump Timing Problem dancamp009 Engines and Propulsion Systems 27 30-11-2013 02:22
Fram Oil Filter for Perkins RHoodJr Construction, Maintenance & Refit 18 30-10-2011 19:11
Correct Prop Size for Perkins 4236 anglooff Engines and Propulsion Systems 12 13-09-2011 04:04
Perkins 4107 Starter billwa Engines and Propulsion Systems 11 10-09-2011 08:22
Want To Buy: Perkins M30 or Volvo MD2030 velocitytrey Classifieds Archive 0 08-08-2011 11:32



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 08:39.


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.