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Author Topic:   170 Montauk Prop Recommendation

JBG777 posted 08-30-2005 05:30 PM ET (US)
I am looking to upgrade my prop to a stainless and was wondering what is recommended for my 2004 montauk with a 90 Merc. Please help!
LHG posted 08-30-2005 07:11 PM ET (US)
An 18" pitch Mercury Vengeance.
Matthew posted 08-31-2005 12:06 PM ET (US)
What engine are your running?
WT posted 08-31-2005 12:12 PM ET (US)
My 2004 Montauk 90 hp 4 stroke came with an 18 pitch Vengeance stainless steel prop.
Perry posted 08-31-2005 12:47 PM ET (US)
Maybe his came with a 90 HP 2 stroke Classic.
JBG777 posted 09-02-2005 05:53 AM ET (US)
I have 2 stroke merc. and it is an aluminum prop. I'm not sure of the size, but you think that 18" is the right size?
bigjohn1 posted 09-02-2005 08:15 AM ET (US)
I can't be much help to you with first hand experience since its 90 2-stroke but I recall some lengthy prop discussions on that motor perhaps 12-18 months ago. If memory serves me, 2-stroke 90 guys were able to run higher pitched props than guys with either the 90 or 115 4-strokes. You may well be able to easily push a Laser-II in 20 pitch so I'd do a search and read through those discussions prior to buying the 18 Vengeance.
imko posted 09-07-2005 02:14 PM ET (US)
I tried 3 props on my Montauk 170 with 90 4 stroke:
(model 2003)
1. Vengeance 18" => rpm 6200 thats to much.(with 3 pers.
on board)
2. Trophy plus 19" => 5300-5400 rpm. Very difficult
handling when trimmed al the way up at WOT, and not
smooth running at low rpm.
3. Laser II 20" 5700-5800 rpm the perfect prop for this
engine !! (mounted in third hole)
Top speed with 1 pers. 44,4 mph, with 3 pers. 42 mph.
Regards,
Imko

LHG posted 09-07-2005 03:17 PM ET (US)
With the 2-stroke 90, you would want a 20" Laser II. You might contact "Marc" in the Outrage thread, to see if he has one to sell, as he is using one, and it is too much pitch for his application. I would mount enigne in third (middle) set of mounting holes. My guess is that your aluminum is a 21" pitch.
The Laser II will greatly improve your performance and smoothness of ride.

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Author	Topic: 170 Montauk Prop Recommendation
JBG777	posted 08-30-2005 05:30 PM ET (US) I am looking to upgrade my prop to a stainless and was wondering what is recommended for my 2004 montauk with a 90 Merc. Please help!
LHG	posted 08-30-2005 07:11 PM ET (US) An 18" pitch Mercury Vengeance.
Matthew	posted 08-31-2005 12:06 PM ET (US) What engine are your running?
WT	posted 08-31-2005 12:12 PM ET (US) My 2004 Montauk 90 hp 4 stroke came with an 18 pitch Vengeance stainless steel prop.
Perry	posted 08-31-2005 12:47 PM ET (US) Maybe his came with a 90 HP 2 stroke Classic.
JBG777	posted 09-02-2005 05:53 AM ET (US) I have 2 stroke merc. and it is an aluminum prop. I'm not sure of the size, but you think that 18" is the right size?
bigjohn1	posted 09-02-2005 08:15 AM ET (US) I can't be much help to you with first hand experience since its 90 2-stroke but I recall some lengthy prop discussions on that motor perhaps 12-18 months ago. If memory serves me, 2-stroke 90 guys were able to run higher pitched props than guys with either the 90 or 115 4-strokes. You may well be able to easily push a Laser-II in 20 pitch so I'd do a search and read through those discussions prior to buying the 18 Vengeance.
imko	posted 09-07-2005 02:14 PM ET (US) I tried 3 props on my Montauk 170 with 90 4 stroke: (model 2003) 1. Vengeance 18" => rpm 6200 thats to much.(with 3 pers. on board) 2. Trophy plus 19" => 5300-5400 rpm. Very difficult handling when trimmed al the way up at WOT, and not smooth running at low rpm. 3. Laser II 20" 5700-5800 rpm the perfect prop for this engine !! (mounted in third hole) Top speed with 1 pers. 44,4 mph, with 3 pers. 42 mph. Regards, Imko
LHG	posted 09-07-2005 03:17 PM ET (US) With the 2-stroke 90, you would want a 20" Laser II. You might contact "Marc" in the Outrage thread, to see if he has one to sell, as he is using one, and it is too much pitch for his application. I would mount enigne in third (middle) set of mounting holes. My guess is that your aluminum is a 21" pitch. The Laser II will greatly improve your performance and smoothness of ride.