Re Powering a Cal 39

[DavePed]

I am considering a Yanmar 4JH4E as a replacement for the original Perkins 4-108 that has finally started to lose compression. I would greatly appreciate hearing from anyone who has been down this treacherous path.

[Planb835]

While I do not have a Cal 37 I did repower my Cal 25 Mk 2 with a Beta Marine engine. It is built off of a Kubuta block and fit perfectly in the same foot print as my old atomic. It has a manual pump for the oil which is very cool. Ask for Stanly at Betamarinenc.com. They are adding 2 years worth of spare parts for any engine bought in 2007