Removing 50 hp restrictor plate makes a 60 hp?

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raycarlson
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Re: Removing 50 hp restrictor plate makes a 60 hp?

Post by raycarlson » Wed Jul 08, 2015 6:53 pm

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.

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Neo
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Re: Removing 50 hp restrictor plate makes a 60 hp?

Post by Neo » Wed Jul 08, 2015 9:52 pm

Apparently the EFI models have the same restrictor and others have done this with success.

I personally think the effort is next to nothing :D ....Keeps me busy too 8)

All the best.
Neo

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dlandersson
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Re: Removing 50 hp restrictor plate makes a 60 hp?

Post by dlandersson » Thu Jul 09, 2015 4:46 am

I find I will put far more effort into anything that increases my SAILING speed. :)

Motoring, not so much. 8)
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.

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grady
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Re: Removing 50 hp restrictor plate makes a 60 hp?

Post by grady » Thu Jul 09, 2015 10:34 am

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.

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Re: Removing 50 hp restrictor plate makes a 60 hp?

Post by fortunare » Sun Aug 30, 2015 9:52 pm

which brands of outboard would removing the restrictor plate apply to? I have a 2005 Suzuki. thanks.

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Catigale
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Re: Removing 50 hp restrictor plate makes a 60 hp?

Post by Catigale » Mon Aug 31, 2015 1:16 pm

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.

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DaveB
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Re: Removing 50 hp restrictor plate makes a 60 hp?

Post by DaveB » Mon Aug 31, 2015 8:36 pm

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.

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Re: Removing 50 hp restrictor plate makes a 60 hp?

Post by Catigale » Tue Sep 01, 2015 5:08 am

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 :D ....Keeps me busy too 8)

All the best.
Neo
Does anyone have a photo or diagram of this?

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grady
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Re: Removing 50 hp restrictor plate makes a 60 hp?

Post by grady » Tue Sep 01, 2015 6:22 am

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.

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