Fuel line hose size

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Mark Gadson's picture
Mark Gadson
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Joined: 8/14/16
Posts: 28
Fuel line hose size

I'm getting ready to install a new fuel line hose from the fuel tank to a new Raycor 500 MA Turbine fuel filter.  My 1995 Mk II has the M35A engine. Does anybody know the ID of the fuel line hose? I can't seem to find it in the manuals and I'm a couple hours from my boat. Thanks for any input. 

Mark and Karen Gadson
St Michaels, MD
1995 Catalina 36 Mk II (Hull 1458) - Tall Rig; Wing Keel; M35
​Home Port:  St Michaels, MD
Boat Name: Magnolia

rjwilson's picture
rjwilson
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Joined: 4/28/14
Posts: 60

I replaced mine last year and my records show I used 3/8" line between the tank and filter housing.

Bob Wilson
S/V Morning Breeze
2003 Catalina 36, Hull 2122
York River Yacht Club
Williamsburg, VA

Catboat Willy's picture
Catboat Willy
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Joined: 12/22/14
Posts: 385

Better check with a full visual on your own boat's system as these pumps are rated at 60 GPH and comes with 3/4" ports. My hose from the tank to engine's fuel filter id 3/8ths inches.

Bill Dolan 1990 Catalina C-36 MKI - Hull #1041  'Williwaw'
Std. Rig, Walk Through, Wing Keel
M35, Oberdorfer Conversion,
Home Waters; Charlotte  Harbor & The Gulf Islands of Florida
'You are never out of work if you own a boat'

 

jswesterman
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Joined: 7/2/14
Posts: 22

Mark - I'm in a similar situation - need to know the fuel line size and over a hour from the boat.  Did you use 3/8" as the fuel line from the tank to the Racor primary filter?

Anyone know the size of the fuel return line?

Thanks,
Jeremy

Jeremy Westerman
"Odette", 2005 Catalina 36 Mk II, #2213
Benicia, CA

LeslieTroyer's picture
LeslieTroyer
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Joined: 3/13/16
Posts: 533

I have 5/16 on my M25, both return and supply. 

Les

Les & Trish Troyer
Mahalo 
Everett, WA
1983 C-36 Hull #0094
C-36 MK 1 Technical Editor. 

Commodore

 

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