K&N Air Filters - Part # ??

10 posts / 0 new
Last post
Catboat Willy's picture
Catboat Willy
Offline
Joined: 12/22/14
Posts: 387
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; Charlotte  Harbor & The Gulf Islands of Florida
'You are never out of work if you own a boat'

 

pkeyser's picture
pkeyser
Offline
Joined: 5/18/13
Posts: 679

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.

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

kakers
Offline
Joined: 7/11/13
Posts: 43

 

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

two-rocks
Offline
Joined: 8/11/17
Posts: 74

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
Offline
Joined: 10/27/10
Posts: 826

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)?

Matthew Chachère
s/v ¡Que Chévere!
(Formerly 1985 C36 MKI #466 tall rig fin keel M25)
2006 Catalina Morgan 440 #30.
Homeported in eastern Long Island, NY

Catboat Willy's picture
Catboat Willy
Offline
Joined: 12/22/14
Posts: 387

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

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'

 

kakers
Offline
Joined: 7/11/13
Posts: 43

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.
 

 

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

Catboat Willy's picture
Catboat Willy
Offline
Joined: 12/22/14
Posts: 387

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.  

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'

 

Phil L's picture
Phil L
Offline
Joined: 1/15/08
Posts: 104

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.
 

Phil L 
Southern Cross
Channel Islands, CA
C36MKI #400

Attachments
Catboat Willy's picture
Catboat Willy
Offline
Joined: 12/22/14
Posts: 387

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

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'

 

Log in or register to post comments