C315 engine model and transmission gear reduction data question

VFR750

.
Oct 18, 2021
32
Catalina 315 Noank
For the recently delivered C315 owners

can you confirm the yanmar engine model number (21hp) and the gear ratio stamped on the transmission? Is the shaft 1” in diameter?

I got a good deal on an EWOL feathering propellor and I need the data to order the right one.

Unfortunately my 315 does not arrive until next summer. And I’d like a fancy Christmas present to soothe the pain.
 
Jan 23, 2021
48
Catalina 315 81 Newport Beach
Our 2022 315 came with a Yanmar 3YM20 freshwater cooled three-cylinder 21 HP diesel engine and a Kanzaki KM2P-1(G) transmission with 2.62 gear reduction ratio. Yes, the shaft is 1".

We got a Flex-O-Fold propellor and think that it helps. Good luck with yours! The long wait is not fun...
 

VFR750

.
Oct 18, 2021
32
Catalina 315 Noank
Thanks John

This is just what I needed.

unfortunately, the 2.62 transmission is different than what i thought it was. I got a quote for a 2.2:1 I guess I’m going to wait till the boat shows up.

yes, waiting stinks.
 
May 17, 2004
5,670
Beneteau Oceanis 37 Havre de Grace
I guess I’m going to wait till the boat shows up.
Yes, that would be safest. When I was getting a flex-o-fold I found the plate on my 3YM30 was a different ratio than what I was looking at in the manual.