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Motor Boat Forum

Alpha One Propeller - Will it fit??

by Carl » 25 Jun 2015, 22:31

Carl .. Bayliner 175gt "Annamarie"
Carl
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by Ianfs » 26 Jun 2015, 05:33

Yes, but it's a 23 inch pitch, yours is a 21.
It might work but will be slower to get on the plane and may bring your full throttle revs down.
Which engine option do you have Carl?
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by Carl » 26 Jun 2015, 11:50

Engine is a 2010 3.0 mercruiser + alpha 1 leg ... that's all I know about the engine .....
going to see if I can find the engine serial number in a bit ...
Carl .. Bayliner 175gt "Annamarie"
Carl
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by Carl » 26 Jun 2015, 15:58

Some numbers ...... (have no idea if they will help or not)

Image

Image

Image

Image
Carl .. Bayliner 175gt "Annamarie"
Carl
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Posts: 208
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by Ianfs » 26 Jun 2015, 17:29

You have a 3.O L Mercruiser 135HP engine.

With your boat a 21" pitch prop will be OK, a 19" would be better for Skiiing/Wakeboarding but the 21 will be a good all rounder. A 23" pitch on the other hand would be a little too much.

Hope this helps? :)
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by Carl » 26 Jun 2015, 17:36

Oh yes .... helps greatly :)
Carl .. Bayliner 175gt "Annamarie"
Carl
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by Carl » 27 Jun 2015, 09:27

Just bought this ...... http://www.ebay.co.uk/itm/181574017035? ... EBIDX%3AIT ..

now all I've got to do is get the old one off ...... lol
Carl .. Bayliner 175gt "Annamarie"
Carl
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by Ianfs » 27 Jun 2015, 10:07

A block of wood something like 4x2 ish in between the prop and the ventilation plate to hold the prop (don't put it in gear) a breaker bar or similar, a large socket, can't remember the size and bingo. Obviously you will have to bend back the fixing washer. You might find the thrust washer comes off with the prop. Have you got some 2-4-C grease or similar prop grease?
Also you'll have to check the torque which I think should be 50ft lbs but be careful to check some say 100ft lbs but I think Mercruiser changed to 50.
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by Carl » 27 Jun 2015, 19:29

Came off much easier than I expected it to. .... undid the locking tabs and then took very little effort with a 27mm spanner to undo the big nut on the end.
Carl .. Bayliner 175gt "Annamarie"
Carl
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by Carl » 27 Jun 2015, 19:47

Do I need any bits off the old prop??

Back
Image

Front (nut end)
Image
Carl .. Bayliner 175gt "Annamarie"
Carl
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