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Author Topic:   Yam 70 jet for 16-7 Whaler
JimU posted 01-25-2001 04:49 PM ET (US)   Profile for JimU   Send Email to JimU  
I'm looking at a slightly used 2000 model Yamaha 70 with a conventional prop drive lower unit and an optional jet drive lower unit. The owner wants five grand (or less if I can negotiate it) for the engine and both lower units, four grand for the engine and either one of the lower units. Any thoughts on whether or not this is a good deal and whether the engine and lower units are suitable for a 16-7 Whaler? I'm sure the 70 prop unit is reasonably suitable; What about the jet?
JimU posted 01-25-2001 04:55 PM ET (US)     Profile for JimU  Send Email to JimU     
More. . . this is another project option that coincidently presented itself as I read a reply to my previous post on a tunnel drive. Any experience with the jet? it reduces to about the equivalent of a 50 hp on the 70 hp powerhead.
Dick posted 01-25-2001 06:40 PM ET (US)     Profile for Dick  Send Email to Dick     
You are correct the jet will reduce the HP to between 50 & 55. I am running a 50 Merc 4 stroke on my Montauk and with two people it will run in the mid 30s, performs well.
The commercial division has built the 17 utility for years with a raised transom for jet drives.
I will email you a pic.
lhg posted 01-25-2001 07:09 PM ET (US)     Profile for lhg    
Jim: I'd forget the jet. They're huge fuel wasters, and are only for highly specialized needs. If you only want 50HP, get one of those with a prop. As a comparison on the engine price, Bass Pro is selling a brand new 2001 Merc 75 for $4500. That would include a one yr warranty with 3 year corrosion warranty. Sounds like the fellow's price is a little high.
scottfarm posted 01-26-2001 07:11 PM ET (US)     Profile for scottfarm  Send Email to scottfarm     
Kenyon Power boats in Florida sells a 2001 90 merc for $5100.00 and they have a brand new in the box 1998 115hp Mariner for $5395.00. Dennis

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