Damper plate for M35B Recommendations

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pbyrne

Anyone have any references on where to buy OEM or good aftermarket ones?
2000 Catalina 34 MK II #1534

Dave Spencer

I'm not sure where you're located but in southern Ontario (or elsewhere in Canada) Anthony Keats in Wheatley, Ont on the north shore of Lake Erie is likely the best place. They are helpful on the phone and shipping is reasonable.
Dave Spencer
C34 #1279  "Good Idea"
Mk 1.5, Std Rig, Wing Keel, M35A Engine
Boat - Midland, Ontario (formerly Lion's Head)
People - London, Ontario

Colonel Butler

I replaced mine in 2020. Ordered from PYI in the US. Model number 22AM4 - High Deflection 30 degree. Cost then was US$239.00. It solved the low speed clatter problem which is due to the low inertia flywheel on this particular engine. If you are comfortable working on engines, not too difficult to change out. Had to disconnect the engine mounts to raise it a bit to get the bell housing off.
2006 Catalina 34MkII "Calypso"
Hull #1746
Niagara-on-the-Lake Sailing Club
Niagara-on-the-Lake ON Canada

KWKloeber

#3
Quote from: pbyrne on October 10, 2024, 03:13:42 PMAnyone have any references on where to buy OEM or good aftermarket ones?

I can likely get one for a 35B from my stocking distributor who supplies me my other parts.  If you want, email me your info, location.
<<~ (Use the email link on the left panel) or WeekendRProducts@aol.com

-Ken
Twenty years from now you'll be more disappointed by the things you didn't do, than by the ones you did.
So throw off the bowlines.  Sail away from the safe harbor.  Catch the tradewinds in your sails.
Explore.  Dream.  Discover.   -Mark Twain

rmjohns

#4
On the PYI website, they ask for:

Engine: Make, model, max horsepower and max RPM?
Transmission: Make, model and number of teeth on input spline?
Backing Plate: Diameter, number of holes, pitch circle diameter? (PCD / 12:00 to 6:00, center of hole to center of hole)

Did you guys have that information prior to ordering a damper plate? Not sure how much that changed year to year. Or is the "22AM4" all I need to know?  I was thinking of having one in hand prior to taking off the tranny.

Rob
Rob

1998 Catalina 34 Mkii 1390 - Miss Allie
New Bern, NC

robbjd

#5
Rob, just purchased a RD-22A-M16 (5.965" OD / 8 bolts / .25" diameter / 5.512 bolt circle diameter). This is on our M35-A(C)30HP, Hurth HBW100-2 transmission with a 10 tooth spline. It replaced the original SACHS 041866052001 damper plate. It was purchased from PYI in Lynwood, Washington. Cost was $301.50 + shipping. I would confirm your current plate dimensions as the RD-22A-M4 has a 6.12 O.D, and 5 bolts in a 5.593" bolt circle diameter. I didn't have to remove the bell housing to access and remove the damper plate.
John
S/V Mystic
1997, C34 MKII, STD rig, Fin keel
Universal M35-A(C)
Hull #1344
Sarnia, ON, Canada