|
11-10-2020, 10:51 PM
|
#1
|
Veteran Member
City: Washougal WA
Join Date: Nov 2020
Posts: 34
|
6-3544M Perkins
Hi all, the PT-41 has twin Perkins 6-3544 M diesels. I don't know a thing about them. Except the smoke a fair bit cold! A Seatte broker said they are trouble. I would appreciate input. These have about 3200 hrs. Tracy
|
|
|
11-10-2020, 11:10 PM
|
#2
|
Senior Member
City: Tampa
Join Date: Oct 2019
Posts: 138
|
Hi Tracey, Couldnt be farther than the truth. They are great engines. Properly maintained and they will last a life time.
|
|
|
11-10-2020, 11:21 PM
|
#3
|
Guru
City: Here
Join Date: Sep 2012
Posts: 2,940
|
This horizontal version had 20,000hrs on it when this photo was taken.
Most parts can be purchased through farm equipment dealers for a fraction of "marine" prices.
|
|
|
11-10-2020, 11:40 PM
|
#4
|
Veteran Member
City: Port Orchard, WA
Vessel Name: Synergy
Vessel Model: Hershine TriCabin Trawler
Join Date: Jul 2012
Posts: 76
|
Ditto. My trawler has twin 6.354 Perkins circa 1985 that continue to work well without trouble. Naturally aspirated Perkins were very reliable while the later model Turbo design was prone to overheat problems. That may be what your dealer was thinking about, so check to see if they are naturally aspirated. I think the turbos numbers have "T" in the suffix, like 6.354T. Other TFs can correct me if I am wrong.....
__________________
Cheechako
Port Orchard, WA, USA
|
|
|
11-11-2020, 06:55 AM
|
#5
|
Guru
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48 (sold)
Join Date: Apr 2008
Posts: 10,185
|
Quote:
Originally Posted by boatpoker
This horizontal version had 20,000hrs on it when this photo was taken.
Most parts can be purchased through farm equipment dealers for a fraction of "marine" prices.
|
BP
On most of our marine engines, the parts most used, abused and sometimes hard to find are the marinization parts. These cannot be found at farm equipment dealers.
A Perkins engine that has the manicooler design should cause a prospective buyer pause. The manicooler itself is pricey and hard to find. Leaky manicoolers can severely damage an engine.
So when boat shopping, being leery of a Perkins with a 30+ year old manicooler is wise. There are plenty of Perkins engines out there that have a better heat exchanger design, I suggest the OP focus on those.
|
|
|
11-11-2020, 10:54 AM
|
#6
|
Senior Member
City: Chesapeake Bay
Vessel Name: Patty Ann
Vessel Model: Mainship 34 MK1 1980
Join Date: Jan 2014
Posts: 410
|
"So when boat shopping, being leery of a Perkins with a 30+ year old manicooler is wise." There are plenty of Perkins engines out there that have a better heat exchanger design, I suggest the OP focus on those."
The above is the position we took when shopping for our boat. Our Perkins
T6.354 has the heat exchanger and tank on the port side, not the manicooler. . The heat exchanger end caps are easily removed to inspect and clean if needed. The Perkins smokes VERY little at start up and goes away within a couple minutes. Our Perkins has been a reliable economical power choice with no complaints for 6 years.
__________________
David
|
|
|
11-11-2020, 11:51 AM
|
#7
|
Guru
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,964
|
Our Perkey has the Multi-Cooler which it the more rectangular of the Perkins HX's. See attached. No issues in 36 years.
__________________
Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
|
|
|
11-11-2020, 01:02 PM
|
#8
|
Veteran Member
City: Washougal WA
Join Date: Nov 2020
Posts: 34
|
Can you tell from these pics if these are manicooler? These look like manipulated to the untrained eye.
|
|
|
11-11-2020, 02:15 PM
|
#9
|
Guru
City: Everett, WA
Vessel Model: Ocean Alexander 38'
Join Date: Oct 2007
Posts: 801
|
Is there a difference between the mani-cooler and multi-cooler?
I've always referred to mine (coolant and exhaust manifold) as a mani-cooler.
I have the same as the perks in above pic, which also look super clean for 3,200 hrs
|
|
|
11-11-2020, 02:33 PM
|
#10
|
Veteran Member
City: Washougal WA
Join Date: Nov 2020
Posts: 34
|
The entire engine room is beyond immaculate. Lets hope mechanically is is as good as it looks. I do however recognize its a 35 year old boat.
|
|
|
11-11-2020, 03:06 PM
|
#11
|
Guru
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48 (sold)
Join Date: Apr 2008
Posts: 10,185
|
Quote:
Originally Posted by Max Simmons
Is there a difference between the mani-cooler and multi-cooler?
I've always referred to mine (coolant and exhaust manifold) as a mani-cooler.
I have the same as the perks in above pic, which also look super clean for 3,200 hrs
|
Max
Do you have a separate transmission cooler? Do you have an after cooler or turbo?
|
|
|
11-11-2020, 03:22 PM
|
#12
|
Guru
City: Everett, WA
Vessel Model: Ocean Alexander 38'
Join Date: Oct 2007
Posts: 801
|
Quote:
Originally Posted by sunchaser
Max
Do you have a separate transmission cooler? Do you have an after cooler or turbo?
|
Yes, separate transmission cooler, no turbo.
|
|
|
11-11-2020, 03:26 PM
|
#13
|
Guru
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,743
|
I’m not in bed w either Perkins or Ford/Lehman but I’d go for a Perkins even though I know of a Perkins that suffered a broken crankshaft running in Chatham Strait.
Also in the past Perkins engines have found favor in our US Navy.
Also I may favor them as when I worked in a mine in Alaska I snagged a job in the diesel electric powerhouse. On graveyard shift I read magazines that the chief engineer subscribed to. I remember a lengthly article about a “new” 4cyl diesel that featured a pre-chamber (combustion chamber) and a compression ratio of 23-1. I was very impressed as an impressionable young man. Some of that awe probably lingers.
As for Perkins engines being trouble ..... I submit that that Seattle broker may be the trouble. I’ve not heard of Perkins engines being even as troublesome as the average old marine engine.
__________________
Eric
North Western Washington State USA
|
|
|
11-11-2020, 04:21 PM
|
#14
|
Guru
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,964
|
Quote:
Originally Posted by tdoriot
Can you tell from these pics if these are manicooler? These look like manipulated to the untrained eye.
|
Yes, that is the Multi-Cooler, same as I have. The Mani-Cooler has rubber end-caps for tube clean out.
OK, from the Perkins manual, the top two are the Multi-Cooler with and without a turbo.
The bottom is the Mani-Cooler.
__________________
Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
|
|
|
11-11-2020, 04:59 PM
|
#15
|
Guru
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,964
|
Mani-Cooler
__________________
Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
|
|
|
11-11-2020, 05:13 PM
|
#16
|
Veteran Member
City: Washougal WA
Join Date: Nov 2020
Posts: 34
|
Yeah, I don't think I have any of those. I think the Seattle broker either had a bad experience with perhaps the turbo version, or just doesn't want me to by this boat since it isn't thiers!
|
|
|
11-11-2020, 06:43 PM
|
#17
|
Guru
City: Everett, WA
Vessel Model: Ocean Alexander 38'
Join Date: Oct 2007
Posts: 801
|
Quote:
Originally Posted by tdoriot
Yeah, I don't think I have any of those. I think the Seattle broker either had a bad experience with perhaps the turbo version, or just doesn't want me to by this boat since it isn't thiers!
|
It's a Multi-cooler.
Can the Multi cooler be switched out with the mani-cooler if need be?
FWIW, pulled my 36 y/o Multi coolers and had them cleaned, reinstalled and no problems at all. I will say that I do think the elbows are on borrowed time though
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Trawler Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|