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Catboat Willy
Last seen: 18 hours 43 min ago
Joined: 12/22/14
Posts: 178
K&N Air Filters - Part # ??

We could use a little help in selecting the model or correct part number of  the K&N air filter that works/fits on the M-35 Universal Engine. If anyone has that part number, it would certainly help.
Thanks,
 Bill

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

 

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

 
pkeyser's picture
pkeyser
Last seen: 2 days 13 hours ago
Joined: 5/18/13
Posts: 317

Hi Bill-
If all else fails, call a Universal Engine dealer. I use Hanson Marine in Marblehead MA; 781-631-3282. They ship across the US. My aircleaner housing on my M25 (C-30) broke apart from vibration and they directed me to an improved design.

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Paul & Wendy Keyser
"First Light"
Newburyport MA/Rye NH
2005 C36 MKII #2257
Wing, M35B

kakers
Last seen: 1 day 13 hours ago
Joined: 7/11/13
Posts: 42
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Ken Akers
1995 C-36 MkII #1378  SR/FK  M35A
San Francisco Bay

two-rocks
Last seen: 17 hours 43 min ago
Joined: 8/11/17
Posts: 18

I used: RU-0360
I little longer than what was posted with more surface area. I think it was cheaper as well.
The specs for all the filters are on the K&N website, you are looking for a 1.75" connection - the other dimensions are flexible to a point.

Chachere's picture
Chachere
Last seen: 1 day 20 hours ago
Joined: 10/27/10
Posts: 528

Query for those of you who have installed the K&N as a replacement for the OEM "pancake" style Universal air filter:
What do you do with the crankcase vent hose (on our M25, its routed into the air filter)?

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Matthew Chachère
s/v ¡Que Chévere! #466
1985 C36 MKI tall rig fin keel M25
Homeported in eastern Long Island, NY

Catboat Willy
Last seen: 18 hours 43 min ago
Joined: 12/22/14
Posts: 178

Paul, Ken & Greg;
Just a short note to say' thank you' for passing along that information regarding the part number of the filter. The folks at the 'K&N help line' tried their best but came up empty.,,,
Bill

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

 
kakers
Last seen: 1 day 13 hours ago
Joined: 7/11/13
Posts: 42

Bill,

From Rod Collins aka Mainesail:  ​http://www.pbase.com/mainecruising/m25_air_filter__pcv_valve

Second picture shows routing the PCV hose into the filter.
 

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Ken Akers
1995 C-36 MkII #1378  SR/FK  M35A
San Francisco Bay

Catboat Willy
Last seen: 18 hours 43 min ago
Joined: 12/22/14
Posts: 178

Follow up;
After consideration, I decided to go with the K&N  RU2450 and side mount it on the side of the of the M-35 engine. The intake air manifold on the M-35 engine is not quite the same as the  M-35 A & B engines. Although the air intake is the same diameter, (1.75) - the manifold input port on the M-35 runs parallel with the floor - where in the later model engines, the input port has an elbow and points skyward.
I do not intend to run the oil breather exhaust hose in to this filter, rather, I will take the oil breather hose and push it into an empty water bottle with some stainless steel wool at the bottom of the bottle. Not pretty but effective.  

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

 
Phil L's picture
Phil L
Last seen: 34 min 58 sec ago
Joined: 1/15/08
Posts: 95

I use the 2450 as well.  And I plumbed the breather tube back inot the filter to keep it from getting too oily.  Works like a charm.
 

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Phil L 
Southern Cross
Channel Islands, CA
C36MKI #400
Catboat Willy
Last seen: 18 hours 43 min ago
Joined: 12/22/14
Posts: 178

Thanks for the picture Phil. I think I'll give that a try.
Bill

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

 
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