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Old 07 October 2013, 07:15   #1
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Jet installations

Generally,it seems to me that jets take up a lot of space inside the boat?

Seems to be due to the mating of the engine and the jet unit, why cant they be mated without the foot long shaft?



Seems these need less space for installation?



The rest of the boat looks great
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Old 07 October 2013, 07:44   #2
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Think you may find the extra distance between the jet unit and engine is for the water pick up tunnel for the jet drive.

http://www.boatdealerblog.com/wp-con.../jet_drive.jpg
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Old 07 October 2013, 08:01   #3
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Think you may find the extra distance between the jet unit and engine is for the water pick up tunnel for the jet drive.

http://www.boatdealerblog.com/wp-con.../jet_drive.jpg
Partly, however you could still bolt the engine to the jet unit without a shaft you could move the engine a long way aft and get rid of most if not all of the shaft.

(removing any balance requirements)
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Old 07 October 2013, 08:11   #4
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Quote:
Originally Posted by Starovich View Post
Generally,it seems to me that jets take up a lot of space inside the boat?

Seems to be due to the mating of the engine and the jet unit, why cant they be mated without the foot long shaft?



Seems these need less space for installation?



The rest of the boat looks great
yes but those two engines are stern drives
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Old 07 October 2013, 08:12   #5
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Quote:
Originally Posted by Starovich View Post
Partly, however you could still bolt the engine to the jet unit without a shaft you could move the engine a long way aft and get rid of most if not all of the shaft.

(removing any balance requirements)
There is still a gear box
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Old 07 October 2013, 08:28   #6
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does a mod want to split the jet discussion off from Andre's thread? My questions on jets is not an reflection on the 680 Jet, but more general.
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Old 07 October 2013, 11:50   #7
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Partly, however you could still bolt the engine to the jet unit without a shaft you could move the engine a long way aft and get rid of most if not all of the shaft.

(removing any balance requirements)
Think of it many years down the line when you need to do maintenance/ remove the jet unit.... You'll be glad then for the extra clearance. Also some jet units are partially dismantled/ removed from the inside. You don't want to have to take the engine out just to replace the input shaft bearing do you?

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Old 07 October 2013, 13:10   #8
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Its just cant see the difference between an outdrive leg and a jet, (given room for the water intake), surely the issues would be the same?
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Old 08 October 2013, 12:53   #9
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After a post from Alan Priddy.

Having looked at the Castoldi website the pics are exactly as i pictured, no drive shaft.
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