Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 07-01-2025, 07:52   #1
Registered User

Join Date: May 2012
Location: Wilton, CT
Boat: Endeavour 37
Posts: 257
Perkins 4-108 Engine. Complete

1981 Perkins 4-108 engine. Complete with Hurth HW15 transmission. Engine is currently running in my boat in Stamford, Connecticut. Available in May 2025. Starts immediately and runs excellent. Consistent 40-50 lbs. running oil pressure. Normal operating temperature at 180 degrees. Recently replaced heat exchanger, raw water impeller, fuel distribution pump, starter motor, secondary fuel filter. Needs lift pump and rear main oil seal replacement, while engine is out. Engine can be picked up in Branford, Connecticut in May 2025. $3,000. If interested, send me a message with contact info.
Attached Thumbnails
Click image for larger version

Name:	Perkins_4-108a.jpg
Views:	50
Size:	439.9 KB
ID:	297494   Click image for larger version

Name:	Perkins_4-108b.jpg
Views:	51
Size:	427.9 KB
ID:	297495  

Click image for larger version

Name:	Perkins_4-108c.jpg
Views:	40
Size:	419.6 KB
ID:	297496  
BozSail is offline   Reply With Quote
Old 25-01-2025, 11:21   #2
Registered User

Join Date: May 2012
Location: Wilton, CT
Boat: Endeavour 37
Posts: 257
Re: Perkins 4-108 Engine. Complete or Will Sell Parts

Open to parting out this engine, but it runs very good... if you need one.
BozSail is offline   Reply With Quote
Old 05-02-2025, 11:03   #3
Registered User

Join Date: Feb 2025
Posts: 3
Re: Perkins 4-108 Engine. Complete

Boz, what do you guesstimate the cost to have the lift pump and the rear mail seal replaced? Also, im looking at replacing gasoline engine and transmission on a 1985 32’ islander with a diesel type. Do you happen to know if your Perkins can be fitted with minor modifications?
Raul V is offline   Reply With Quote
Old 05-02-2025, 12:30   #4
Registered User

Join Date: Apr 2021
Location: Deale, MD
Boat: Moody 376
Posts: 619
Re: Perkins 4-108 Engine. Complete

Lift pump is less than $50 and maybe 45 minutes most of which will be spent bleeding the fuel.

rear main seal is about the same price for parts. Assuming nothing else is wrong. I'm doing the Rear main on my 4108 right now in situ. but i needed a new coupler, new damper plate, new cutless bearing, new shaft seal. on a bench getting everything apart will be easier. but on a bench if everything plays nicely, I think a rear main seal could be done in a few hours of work. start to finish. in the boat, many more hours.
marcjsmith is offline   Reply With Quote
Old 05-02-2025, 16:32   #5
Registered User

Join Date: Feb 2025
Posts: 3
Re: Perkins 4-108 Engine. Complete

I agree, any component like a rear main seal, is much easier to install outside. And at that time , you can also assess as you did, the condition of any other component that may warrant replacement. Thanks for your reply.
Raul V is offline   Reply With Quote
Old 06-02-2025, 03:40   #6
Registered User

Join Date: Apr 2021
Location: Deale, MD
Boat: Moody 376
Posts: 619
Re: Perkins 4-108 Engine. Complete

the only reason I know the info about the RMS is I'm doing it now... flywheel is fighting me now....





marcjsmith is offline   Reply With Quote
Old 06-02-2025, 08:24   #7
Registered User

Join Date: May 2012
Location: Wilton, CT
Boat: Endeavour 37
Posts: 257
Re: Perkins 4-108 Engine. Complete

Reply to Raul V: This engine starts and runs excellent. A lift pump, as stated in a post above, is about $45-$50 and very easy to replace. The rear main seal is also relatively easy to replace when the motor is out of the boat (not so easy with the engine still in the boat). I would also recommend that, with the engine out of the boat, the fuel distribution pump should be examined by a technician (also much easier to do with the engine out of the boat). Other components replaced fairly recently: water pump">Raw water pump, engine water pump, engine water hoses, secondary fuel filter, thermostat, plus normal maintenance.
BozSail is offline   Reply With Quote
Reply

Tags
engine, perkins

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
For Sale: Perkins 4-108 Marine Diesel Engine Marine Engine & Transmission - Running katieb Boats For Sale and Wanted 4 18-09-2023 07:33
For Sale: Complete Perkins 4.108 Engine and Transmission svJuggernaut Classifieds Archive 0 02-02-2015 09:48
For Sale: Westerbeke/Perkins 4.108 Complete Engine & Trans svJuggernaut Classifieds Archive 11 01-01-2015 11:16
Perkins 4-108 vs Westerbeke 4-108 world spectator Engines and Propulsion Systems 14 15-08-2010 18:33

Advertise Here


All times are GMT -7. The time now is 01:00.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2025, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.