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ContinuousWave: Whaler Performance
60 degree Johnson 90/Montauk.....
|Author||Topic: 60 degree Johnson 90/Montauk.....|
posted 05-12-2003 02:11 PM ET (US)
If you have this exact set up; I'm interested in hearing from you regarding what size and type prop you use. I have a 2002 Johnson 60 degree 90hp 2 stroke. It is on a '77 Montauk. Bomb told me to use a 14x 19 prop so I did. (Aluminum) With just me and a light load a can get to 5200 RPM's. With another in the boat and full fishing gear it goes to 4900 RPM's (Both WOT) I like the cruising range: 32+MPH @4000 RPM's but I keep hearing how this engine needs to hit 5500 RPM's WOT. What do you use and do you think it's the right fit? Everyone says the 13x17 is the right size for this boat.
posted 05-12-2003 06:07 PM ET (US)
Masbama- I have a 94 Montauk with 2002 Bomb Johson and run a stainless steel 14x17 prop. With a light load it runs 5600 rpm. With heavy load or sking no problem hitting 5400 rpm
posted 05-12-2003 07:48 PM ET (US)
My Montauk with Johnson 90 hits 5500 rpm at full throttle with a 13X19. This is with two fisherman and fishing gear 27 gallon tank. Max speed is at 43 MPH. cruising at 4000 rpm is approx. 30+.
posted 05-13-2003 08:04 AM ET (US)
I have a '88 Montauk with a 2001 90 Johnson.
posted 05-13-2003 08:18 AM ET (US)
Same set-up (13X19). Results from Bosco seem strange with his 14X17. Maybe cause it's bigger around.
posted 05-13-2003 10:59 AM ET (US)
Scratch the 14x17 and go with a 13x17 SST. If you do get 5600 then have it double cupped and she'll drop down to 5400 or so. I think you are fine with 5200 but the other prop should drop you at 54-5500. The 14" i believe is for heavier boats, I never had good luck with big diameter props on Whalers. I always do better with smaller diameter and bigger pitch for some reason.
posted 05-13-2003 02:06 PM ET (US)
Masbama- Looked today and my prop is actually 13 7/8x 17. Julius
posted 05-13-2003 06:43 PM ET (US)
Thanks Guys! Maybe I'll buy one of each!
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