Long and short

cory13

Cadet
Joined
Aug 6, 2008
Messages
15
Did Merc make a long and short shaft of the 84' 115 inline and if so , How long is each one. I think there was both a 20'' and a 25'' but not sure. Also this measurement is taken from the anticav plate to the ? . Thanks
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
27,314
Re: Long and short

Short shaft is a 15" length. Long shaft is 20". Merc made some shorties in the seventies, but I am not sure when they stopped making them. You might look on the Crowleymarine.com site and check all the models for the '84 model year.
 

Moody Blue

Captain
Joined
May 24, 2004
Messages
3,136
Re: Long and short

The lengths are measured from the anti-ventilation plate to the transom mount bracket where it sits on the transom.

A 20" shaft motor mounted on a boat with a 20" transom should place the anti-ventilation plate even with the bottom of the boat, approximately.

I think some of the smaller HP motors come in the 25" shaft size for use on sail boats as auxilliary motors.
 
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