New Engine on a 431

Hello again crew,

I'm just about to buy a new engine for Alimagna Swan 431... They offer me a Janmar but I'm not sure if it fits. Has anybody installed a Yanmar on a 431 or in a similar Swan?

Fair winds, and Happy Easter,

Juan Allamand.

Juan;

Not sure if you've already bought the Yanmar or not, so, for what it's worth...

I replaced the Perkins 4.108 with a Volvo-Penta D2-55 without any problems in my 1974 Swan 41/018.

In doing so I replaced the controls, instrument panel, rebuilt the Borg-Warner transmission and changed the side exhaust to a much quieter wet exhaust out the stern.

I'm very happy with the choice.

John

Hi John.

Our 41/022 still has a Perkins 4108 engine which is ok with the original dry exhaust, slightly modified with anodes to try and prevent corrosion. But problems might arise. So I would be interested to know where, in your transformation, you have been installing the waterlock, and where is the wet exhaust pipe passing through the rear cabin, as there is no space in the original arrangement. Did you have to build a box in the rear cabin, is the pipe going under the battery bank, etc...

Thanks for any info.

Regards. Philippe.

Juan, que motor pusiste al final...?

I am studing change The 4108 for a

Volvo d2-75HP or Volvo d2-55HP

yanmar 4JH4 75HP Yanmmar 4JH5E 52HP

Please give me your oppinions.

Best Regards
Fernando
Aldebaran 431/010