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Old 07-16-2018, 02:06 PM   #21
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I have a Perkins in my lobsterboat 1972. Perkins is a great engine block but the marinizing parts can get very pricey and hard to find. If the engine in the boat you are looking at has separate intake and exhaust manifolds (exhaust iron and the intake aluminum) you have the original style and parts are inexpensive & available for the most part.
The later engines with combined heat exchangers or combined manifold & heat exchangers have expensive and in some cases unavailable parts and I would want a big discount on the price of the boat.
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Old 07-16-2018, 02:14 PM   #22
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Perkins 6-354 oil consumption

As the previous post note, these engines saw service around the world in a wide range of applications. Most every diesel will smoke on cold startup. Clean injectors, with the correct 'crack off' pressure is important. Any good quality 'diesel' formulation oil (Shell Rotella 15-40) is fine but ensure it is diesel formula, not gasoline engine oil.
My own Perkins smoked until I ran it hard with clean injectors and used SeaFoam added to the engine to help clean and strip carbon off the rings. After an oil change the oil stayed much cleaner longer.
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Old 07-16-2018, 03:49 PM   #23
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Agree with Mike. Oil use sounds excessive. I might add a pint every 100-200 hours (a season). Parts are OK to find, and my 6.3544M has never given me a problem (10 years and counting) apart from upstream fuel issues, which are not the engine's fault. Get an oil analysis as a first step (cheap), and if that checks out all right, then a mech survey (less so).
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Old 07-16-2018, 04:04 PM   #24
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Parts are not hard to find

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Originally Posted by Brooksie View Post
I have a Perkins in my lobsterboat 1972. Perkins is a great engine block but the marinizing parts can get very pricey and hard to find. If the engine in the boat you are looking at has separate intake and exhaust manifolds (exhaust iron and the intake aluminum) you have the original style and parts are inexpensive & available for the most part.
The later engines with combined heat exchangers or combined manifold & heat exchangers have expensive and in some cases unavailable parts and I would want a big discount on the price of the boat.
Parts are NOT hard to find.

https://www.parts4engines.com/perkins-ht-6-354/
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Old 07-16-2018, 05:25 PM   #25
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I have a Perkins 6.354 in my 1972 Eagle 40 with around 2300 hrs. Runs like a train - the absolute pinnacle of early 70's technology! Leaks/drips oil (as expected) but doesn't burn oil unless you wind it up over 1800 RPMs (about doubles the fuel burn at high rpms as well). Usually not worth it for another 1.5 knots.

nb: air intake on mine uses a "fine spray of oil" over the intake vs a paper filter.
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Old 07-16-2018, 07:47 PM   #26
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my 49 year old perkins 110hp engine,with almost 8000hrs on it runs like a clock. sips 1.7 gallons an hour cruising and hasn't even coughed after below zero winter startups ( i run lucas oil additive) IMO you're crazy if you swap it. Do regular oil changes and get your oil checked in the lab ($25) mine is also non turbo.Mine ALSO burns about a pint every 8 hours as advertised straight from factory. if you ever think of selling that engine....call me I could use another 20 hp!!! Peace!!
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Old 07-17-2018, 01:04 PM   #27
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6-354 for sale

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Originally Posted by driller66 View Post
my 49 year old perkins 110hp engine,with almost 8000hrs on it runs like a clock. sips 1.7 gallons an hour cruising and hasn't even coughed after below zero winter startups ( i run lucas oil additive) IMO you're crazy if you swap it. Do regular oil changes and get your oil checked in the lab ($25) mine is also non turbo.Mine ALSO burns about a pint every 8 hours as advertised straight from factory. if you ever think of selling that engine....call me I could use another 20 hp!!! Peace!!

From Boats and Harbors:


PERKINS 6354.4, HP 130 @ 2,800 RPM, w/ transmission and exhaust riser. $2,250.00 OBO. (573) 289-2314
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Old 07-17-2018, 03:06 PM   #28
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Eagle

My father has a 1975 40 eagle with a 120hp leman. Those 70 models where built like tanks. Good luck with yours.
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Old 07-17-2018, 08:18 PM   #29
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Other than smoking at start-up, my two 34 year old 6.354's have been trouble free (2,700 hrs), knocking on wood.
Would also like to find a Perkins mechanic in the Everett vicinity.
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Old 07-17-2018, 08:36 PM   #30
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I stand by what I said, there are no marinizing parts on your site only things you could get at any Massey Tractor dealer.
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Old 07-17-2018, 09:54 PM   #31
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Originally Posted by Max Simmons View Post
Other than smoking at start-up, my two 34 year old 6.354's have been trouble free (2,700 hrs), knocking on wood.
Our single Perkins 6.354 ( 2500 hrs) smokes very little on start-up only, nothing excessive what so ever, reaches operating temp, doesn't miss a beat and burns/leaks 10-14 ounces of oil in 40-50hrs of operation @ 1600-1800 rpms. Clean fuel ,frequent oil changes, proper coolant... No complaints.
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Old 07-19-2018, 08:40 AM   #32
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Update, we've been out in the boat twice and like you all said the motor runs great. Starts up first turn of the key, smokes for a minute then clears up. Oil psi is at 55, temp around 160 degrees and constant. It's a non turbo without the "manicooler".

Oil Sample Story: We have a diesel shop we use for work, good mechanics. I stopped by to get a oil sample bottle and told them I was going to take an oil sample and would drop it off Sunday, where would be a good place to leave it outside their shop seeing how they were closed. They said outside by the fire hydrant but they couldn't promise it would be there come Monday morning because kids in the neighborhood have been known to steal other things left outside.

So I took the sample and left it by the fire hydrant. Thinking I would outsmart the neighborhood kids I wrapped it in a paper towel, placed it inside a large ziplock bag and piled it next to the hydrant with some other garbage laying around.

When I called Monday morning to see if they got the sample they said they couldn't find it! Apparently, The neighborhood "early morning walking club" decided to pick up trash as they got they're morning exercise. Oh well can't outsmart them.

The engine looked clean, the engine room was very clean as well. The overall appearance of the boat looks well maintained. The engine is rebuilt with 400 hours, 2 new stainless fuel tanks at 300 gallons, new 50 gallon fresh water and 50 gallon holding tank. 2 new toilets with new rigid plumbing, and newer led lighting, all systems work with some minor exceptions. Most of the electronics are outdated but still function.

So, we're purchasing tomorrow! Damn the torpedoes, full speed ahead.
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Old 07-19-2018, 10:55 AM   #33
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Delo 100 is commonly used in Detroit 2 cycle engines and is easy to come by at a Chevron dealer. A different blend would be better for the Perkins. It doesn't have to leak oil. A common problem is the rear main seal. As I remember, it's an old style rope seal. Most modern mechanics don't have real experience in installing that type and they often leave engines with a leak. It's a pain to change because the transmission, bell housing and flywheel have to be removed.

The oil consumption could be caused by high rpm, but the engine has a commercial rating of continuous @ 2500 rpm. If it's run at a higher rpm it will use more oil. Maybe a different oil would solve the usage. The engine is probably broken in. It's a good engine that should go 10,000 hours or more.

A tractor supply is a good place to find parts. The same basic engine is used in tractors, field equipment, generators and pumps, all over the world.
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Old 07-19-2018, 12:34 PM   #34
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Originally Posted by Lepke View Post
A tractor supply is a good place to find parts. The same basic engine is used in tractors, field equipment, generators and pumps, all over the world.
These are some of the reasons Cat bought Perkins about 20 years ago. The brand whether marine or most commonly used as you state Lepke is alive and well.
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Old 07-19-2018, 03:19 PM   #35
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Brilliant engine. The benchmark of diesels.
If you run them on 15/40 series 3 oil they'll keep going for years.
They all smoke on start up until they warm up, put them on a light load until they reach 80'c then they work like a trojan all day.
If you need parts go to www.parts4engines.com as OE suppliers they offer full/partial rebuild kits, great value for money. $9,000 ? Some ones lifting your leg.
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Old 07-19-2018, 09:29 PM   #36
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I have twin 6.354 perkins in my 85 mainship. Parts for the Perkins are easily available, however, the marinization parts are a little harder to come by. As far as the engine itself, I was happy with both until the port engine threw a piston rod through the block. when the rebuilder took it apart he found the rod cap nuts on number 5 piston had fallen off and were in the oil pan. PO had great records and show that the starboard engine had been rebuilt at about 2000 hrs, nothing on the port. They both have 2500 on them now, and after about 15 boat bucks the port engine is now totally rebuilt and waiting on installation. As far as the oil burning, I've never had that problem on either engine. Don't know if this tells you anything, but there it is.
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Old 07-20-2018, 02:07 AM   #37
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For those people having difficulty obtaining marinisation parts the OE marinizing parts suppliers for Perkins are www.ejbowman.co.uk they have everything you need, and more, and they're perfectly happy to support users of their products and ship spares to anywhere in the world.
There's no reason to tolerate any oil leaks on any engine, they simply need fixed.
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