DirkB
  • DirkB
  • Advanced Member Topic Starter
2026-07-14T19:36:56Z
I’m planning to replace the Yanmar 2GM20F engine as it is underpowered for a 335 and also 23 years of age.
I’m considering a Yanmar 3YM30 or alternatively a Beta Marine 25 or 29.
What 3 cylinder engines and propellors(!) are currently in use for Parker 325/335,
I have a 15” VariProfile propellor which I hope can be used.
MartinH
2026-07-16T17:53:08Z
The latter 335s were fitted with either 3YM20 or 3YM30 when they were built.
Both good engines I believe. The Beta also has a good reputation in the UK and Beta Marine are said to be good people to deal with.

Parkers fitted quite a lot of KiwiProps, We have had two on different boats, they seem to work well and last.

Martin
335/50
PeterDann
2026-07-17T18:42:09Z
Hi Dirk

I replaced Blue Moon's original and underpowered engine with a 3YM20 and it think it is plenty powerful enough - 6.5 knots in flat water, nice and smooth, not too noisy. It has the same footprint as the original Yanmar (a 2GM something) so dropped onto the existing mountings. The propeller is a 3-blade Featherstream which I love - and was glad not to have to pay for!

Peter
Peter Dann
Blue Moon 325/32