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Tartan 37 Owner's Forum - Ride the wind, but look good doing it!
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 Post subject: W50 Two different models...
PostPosted: 11 Feb 2019 06:52 

Joined: 09 Jul 2008 12:51
Posts: 251
After a little confusion about which starter I needed to purchase I realized I had uncovered a bit of a mystery when it comes to the W50 engine. According to Westerbeke they only built that engine till 1979. (Model history attached). I suspect they DID build W50 for a few more years when Tartan switched engines later in the 1980s. The two W50 models have a distinct feature difference.... the position of the starter. The first version of the W50 has the starter mounted in the middle of the engine pointing towards the transmission... this has a two holed starter flange. The later W50 model has the starter mounted on the backside of the bell housing pointing towards the front of the engine. This starter has a 3 holed flange mounting.

I have included the spec sheet for the W50 and W52 to show the difference in starter mountings. The newer W50 model adopted the W52 starter location design. I don't know of any other difference in W50 models except for the bell housing, starter, and starter location.

Today, 2/11/19, I confirmed with Westerbeke there were two different W50 models. The older model with the starter located center was discontinued in 1979. The 2nd W50 model incorporated a new common bell housing and starter located aft of that housing. They began this production in 8/1979. Mystery solved....

AND THEN THERE IS THIS "Universal Engine" mystery that I won't get into.

This does not list the newer W50 model that started production in 8/1979
Westerbeke model history:

W50 specs with picture:

W52 specs with picture:

File comment: W52 Spec sheet with picture of engine
w52.pdf [1.81 MB]
Downloaded 17 times
File comment: W50 Spec sheet with picture of engine
w50.pdf [1.12 MB]
Downloaded 20 times
File comment: Model History
model_history.pdf [16.01 KB]
Downloaded 12 times
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