Volvo Penta 120S saildrive anode adaptor?

[VicS]

I am not convinced it will. The front housings also contain bearings and seals and from memory the legs of the 120 are different from the 130/150 type with the split anode. Think the shaft may be longer as the anode and housing are longer. However, the parts drawing posted by Nigel suggests that housing will fit, but it confuses me as the 120 leg went out of production in around 2005. I tried to buy a new one in 2011 but could only get a 130 leg complete - but that diagram is showing a price for the whole assembly which would suggest if it is current that the assembly is still available.

BTW the latest Keyparts catalogue shows the prop locking screw as having loctite in the threads rather than the plug. The new one I bought from Volvo in 2011 also was of this type. Also all the listings for anodes for the 120 leg are still the one piece ring.[/QUOTE]

I think you are right.

The propshaft the bearing, shim and seals are the same

The legs themselves look very different.

The bearing housings are different and the O ring seals between it and the leg are different.

 

[VicS]

We on our Cat have two sail drives and would not attempt to change the fitting for a two part. They are made (saildrive) to only take the one part fitting so why change it when it aint broke !

Peter

For the same reasons that later drives have a two part anode.

 

[colhel]

On thge 120 the one piece is held in by 2 screws pulling the anode against a surface on the saildrive to make a contact. On the lower diagram in Vics post (a 130?) the anode looks to be clamped around a spiggot to make a good contact. I can see a way of modifying an single, 120, anode into a 2 part, but not sure if it would make sufficient contact and keep the anode large enough to be useful.

 

[Tranona]

On thge 120 the one piece is held in by 2 screws pulling the anode against a surface on the saildrive to make a contact. On the lower diagram in Vics post (a 130?) the anode looks to be clamped around a spiggot to make a good contact. I can see a way of modifying an single, 120, anode into a 2 part, but not sure if it would make sufficient contact and keep the anode large enough to be useful.

You can buy a conversion kit in the States that is a plate attached to the leg with the normal two screws and has two attachment points for a special 2 piece anode. However, the anode is smaller and the kit is expensive so never caught on here. Similar one on the market for a Yanmar leg.

 

[Tranona]

I am not convinced it will. The front housings also contain bearings and seals and from memory the legs of the 120 are different from the 130/150 type with the split anode. Think the shaft may be longer as the anode and housing are longer. However, the parts drawing posted by Nigel suggests that housing will fit, but it confuses me as the 120 leg went out of production in around 2005. I tried to buy a new one in 2011 but could only get a 130 leg complete - but that diagram is showing a price for the whole assembly which would suggest if it is current that the assembly is still available.

BTW the latest Keyparts catalogue shows the prop locking screw as having loctite in the threads rather than the plug. The new one I bought from Volvo in 2011 also was of this type. Also all the listings for anodes for the 120 leg are still the one piece ring.[/QUOTE]

I think you are right.

The propshaft the bearing, shim and seals are the same

The legs themselves look very different.

The bearing housings are different and the O ring seals between it and the leg are different.

Also I think the 130 seal housing is larger diameter and the cap screws that attach to the main leg are at a different pitch.

 

[nigelmercier]

NO! Speak to the guys at Volspec or Keyparts!

Huh? What do you mean? See quote from Tranona:

BTW the latest Keyparts catalogue shows the prop locking screw as having loctite in the threads rather than the plug. The new one I bought from Volvo in 2011 also was of this type.

Well so far its an interesting thread which does not determine whether or not fitting a split anode to say, a 120 SE leg is do-able?

Having seen the diagram of the older 120S, I don't think the part #17 will fit. Sorry if I got your hopes up.

 

[Mrnotming]

Nicely researched, thanks to all who took the trouble to explain the matter fully!