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  60 degree Johnson 90/Montauk.....

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Author Topic:   60 degree Johnson 90/Montauk.....
masbama posted 05-12-2003 02:11 PM ET (US)   Profile for masbama   Send Email to masbama  
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.
Julius Bosco posted 05-12-2003 06:07 PM ET (US)     Profile for Julius Bosco  Send Email to Julius Bosco     
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
California Whaler posted 05-12-2003 07:48 PM ET (US)     Profile for California Whaler  Send Email to California Whaler     
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+.


knothead posted 05-13-2003 08:04 AM ET (US)     Profile for knothead  Send Email to knothead     

I have a '88 Montauk with a 2001 90 Johnson.
I run a 13x19 SST stainless prop that I bought new on e-bay for $80.00. The motor will turn about 5600 RPM's with 3 people, 22 gallons of gas, and full cooler of ice and beverages. This is on salt water, fresh water is about 5400. No speedo or GPS, so I don't know the speed.


Whalerdan posted 05-13-2003 08:18 AM ET (US)     Profile for Whalerdan  Send Email to Whalerdan     
Same set-up (13X19). Results from Bosco seem strange with his 14X17. Maybe cause it's bigger around.
Bigshot posted 05-13-2003 10:59 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
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.
Julius Bosco posted 05-13-2003 02:06 PM ET (US)     Profile for Julius Bosco  Send Email to Julius Bosco     
Masbama- Looked today and my prop is actually 13 7/8x 17. Julius
masbama posted 05-13-2003 06:43 PM ET (US)     Profile for masbama  Send Email to masbama     
Thanks Guys! Maybe I'll buy one of each!

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