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Re: Removing 50 hp restrictor plate makes a 60 hp?
Posted: Wed Jul 08, 2015 4:53 pm
by raycarlson
amazing what one will do to go 2mph faster, i for one wouldnt waste the effort unless it would put me in the 25-30mph range for an M.
Re: Removing 50 hp restrictor plate makes a 60 hp?
Posted: Wed Jul 08, 2015 7:52 pm
by Neo
Apparently the EFI models have the same restrictor and others have done this with success.
I personally think the effort is next to nothing
....Keeps me busy too
All the best.
Neo
Re: Removing 50 hp restrictor plate makes a 60 hp?
Posted: Thu Jul 09, 2015 2:46 am
by dlandersson
I find I will put far more effort into anything that increases my SAILING speed.
Motoring, not so much.
raycarlson wrote:amazing what one will do to go 2mph faster, i for one wouldnt waste the effort unless it would put me in the 25-30mph range for an M.
Re: Removing 50 hp restrictor plate makes a 60 hp?
Posted: Thu Jul 09, 2015 8:34 am
by grady
Lynn wrote:raycarlson wrote:Give it a try, if your rpm at wot with current prop increases from 300-400 rpm youll know if it worked..........
Yup, got increase of 400 rpm WOT (from 4,400 to 4,800) & about 10% increase in speed (11 to 12.1 knots)
But did not get 20% increase overall: 50 hp + 10 hp = 60 hp (so suspect other changes needed)
20% increase in HP with a 10% increase in performance is good and probably corect. The faster you go the more HP you need for every MPH.
Re: Removing 50 hp restrictor plate makes a 60 hp?
Posted: Sun Aug 30, 2015 7:52 pm
by fortunare
which brands of outboard would removing the restrictor plate apply to? I have a 2005 Suzuki. thanks.
Re: Removing 50 hp restrictor plate makes a 60 hp?
Posted: Mon Aug 31, 2015 11:16 am
by Catigale
I think the Suzuki powerhead is made by the same factory as the Mercury..but its been a while since I kept up on that.
Re: Removing 50 hp restrictor plate makes a 60 hp?
Posted: Mon Aug 31, 2015 6:36 pm
by DaveB
I agree, actually the Merc. 50 bigfoot goes only 1.5 mph slower than the 60 hp.
I get 18mph on my newer 50hp bigfoot with empty ballast and heavy loaded with 3 batteries and full 12 gals fuel,13 gals water and lots of other stuff including 3 anchors with chain and rode, 450 lbs persons.
Many have gone with the 90hp Suzuki and find it works well with both the X and M but Macgregor specs says 50 hp max for the X and 60 HP for the M and Insurance companies may have a issue if you exceed that .
In a accident they can claim you are overpowered for your boat.
They will win!
Dave
raycarlson wrote:amazing what one will do to go 2mph faster, i for one wouldnt waste the effort unless it would put me in the 25-30mph range for an M.
Re: Removing 50 hp restrictor plate makes a 60 hp?
Posted: Tue Sep 01, 2015 3:08 am
by Catigale
Neo wrote:Apparently the EFI models have the same restrictor and others have done this with success.
I personally think the effort is next to nothing
....Keeps me busy too
All the best.
Neo
Does anyone have a photo or diagram of this?
Re: Removing 50 hp restrictor plate makes a 60 hp?
Posted: Tue Sep 01, 2015 4:22 am
by grady
raycarlson wrote:amazing what one will do to go 2mph faster, i for one wouldnt waste the effort unless it would put me in the 25-30mph range for an M.
Removing a restrictor plate is "Free Speed" (except for the additional fuel burn). I have spent Days tuning rigging and faring in my hull just to get maybe 1/4 knot.