Repowered Catalina 36 DIY

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TippingPoint
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Repowered Catalina 36 DIY

For those who considered repowering I repowered my catalina 36 with a Nani 3.3.   My second season with engine and very happy with this engine.   I had to modify the stringers slightly and cut about 2 inches off the shaft to allow engine to sit back a bit and upgrade exhaust to 2 inches.   The engine cover (steps) required no modification.
 
 

Ed Dewsnap
Marion, MA
1984 Catalina

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pkeyser
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Posts: 686

Could you provide more detail & pictures?

What engine did you replace with the Nani 3.3? Did it have the same engine mount configuration? What transmisson does it use? What hull number are you? ......

Thanks

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

TippingPoint
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Hello Paul,

My 1984 C36 had a Universal Diesel 25 HP.    My new Nanni has a 30 HP at 3600 RPMs, the transmission is a twin disc 2.0 ratio.    I bought the engine directly from Nanni through a local rep so it was delivered to my house from France.  The engine sits a bit lowerso the only modification was to widen the stringer a bit and raise them 1.75 (ish) I used mahagony decking.   The housing that covers the engine (steps) required no modification that was the objective.  Then  I glassed the bed area.    So far I have only used my glow plug once in the two seasons running it.  The biggest obstacle was refitting my exchaust system but the silver lining was that I ended up with a nice space for 2 batteries where the old exhaust manifold lived.  If you are looking for a new engine and want to avoid any modifications consider the beta, I believe they have a direct fit that will exploit your old exhaust manifold.   Unfortunately I do not have pictures on my new phone but will be back at the boat next week and will take a few.    The boat is in Marion Ma.

Ed Dewsnap
 

Ed Dewsnap
Marion, MA
1984 Catalina

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pkeyser
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Posts: 686

Thanks for the additional info Ed. Glad it all worked out!

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

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