twin engine monk 36
- Thread starter KPM
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Comodave
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Welcome aboard.
RT Firefly
Enigma
Greetings,
Welcome aboard. Can't help you specifically with your question but twins in a 36' boat will make for a cramped ER unless they happen to be 4 cylinders. MY opinion only .
Welcome aboard. Can't help you specifically with your question but twins in a 36' boat will make for a cramped ER unless they happen to be 4 cylinders. MY opinion only .
rslifkin
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It certainly can, but other factors have a big effect. If the fuel tanks are outboard of the engines then it's guaranteed to be cramped. If they're elsewhere in the boat and there's more space outboard of the engines then it may not be so bad.
RT Firefly
Enigma
Greetings,
Mr. rs. I stand corrected.
Mr. rs. I stand corrected.
With one exception, I would never want twins in a boat less than 40’ on deck length. The exception is the Mainship 34T which has an unusually wide hull- 14’, for its length.
Maybe said another way, I would never want twins in a boat with a beam less than 14’.
David
Maybe said another way, I would never want twins in a boat with a beam less than 14’.
David
Last edited:
Portage_Bay
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I had a boat with 13' beam, twin V8. Roomy engine room because the tanks were elsewhere, not outboard of the engines.
Fleming
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In the single engine Monk 36 the fuel tanks ARE outboard of the engine, so I doubt they changed the tank position. It's a pretty good size engine room, so there is room for two 4 cylinders, but it will be tight.
fdw
Veteran Member
Monk Owners Association
Have you tried asking/searching the Monk Owners Association?
https://groups.io/g/MONK36OwnersAssociation/topics
Have you tried asking/searching the Monk Owners Association?
https://groups.io/g/MONK36OwnersAssociation/topics
DC36Monk
Veteran Member
Monk 36
I own hull #75 which is a 1985 Monk 36 with twin Perkins 6-354 naturals. The fuel tanks are outboard. The space between the engines was originally occupied by 2 8d batteries and cases. That has been revamped - two G 31 starting batteries recessed between the stringers at the aft wall and 4 6 V in series/parallel outboard and forward of the starboard saddle tank. There is about 12” outboard at the narrowest point on the port engine, a hair more on starboard. Working on the outboard side is a challenge, I.e. to change the impeller on the port engine raw water pump with needle nose you have to access it from the aft end lying across the transmission and reaching forward. It makes the cost of an impeller puller neglible to be able to avoid that.
Genset is mounted at the forward engine space wall.
While the space is tight, it’s doable to maintain the engines well. Each has around 3800 hours and neither smoke except on cold start.
My understanding is that better speed was intended but the weight of the extra engine is a major obstacle. But, you don’t have to push anything to cruise at 7.5 to 8knt and I average around 2.25 nm/gal.( 1750rpm)
I believe there are one or two others with the same setup from that time period.
J
I own hull #75 which is a 1985 Monk 36 with twin Perkins 6-354 naturals. The fuel tanks are outboard. The space between the engines was originally occupied by 2 8d batteries and cases. That has been revamped - two G 31 starting batteries recessed between the stringers at the aft wall and 4 6 V in series/parallel outboard and forward of the starboard saddle tank. There is about 12” outboard at the narrowest point on the port engine, a hair more on starboard. Working on the outboard side is a challenge, I.e. to change the impeller on the port engine raw water pump with needle nose you have to access it from the aft end lying across the transmission and reaching forward. It makes the cost of an impeller puller neglible to be able to avoid that.
Genset is mounted at the forward engine space wall.
While the space is tight, it’s doable to maintain the engines well. Each has around 3800 hours and neither smoke except on cold start.
My understanding is that better speed was intended but the weight of the extra engine is a major obstacle. But, you don’t have to push anything to cruise at 7.5 to 8knt and I average around 2.25 nm/gal.( 1750rpm)
I believe there are one or two others with the same setup from that time period.
J
