Finally Got Mine

GBENNETT

Newbie
Oct 31, 2021
20
48
San Diego
Name
Gary
Boat Name
1992 SkipJack
I've been admiring these boats for a long time. I finally got mine, 1992 25 Skipjack FB. I've taken it out a few times and am not disappointed.

1992 Skipjack FB.jpg
 

GBENNETT

Newbie
Oct 31, 2021
20
48
San Diego
Name
Gary
Boat Name
1992 SkipJack
Well after having and using the boat for almost a year now, I have a few questions.
Is there a Hard Top Pattern for a 1992 25 FlyBridge. I see Skipjacks with Hard tops wondering where they got the deminsions.
Next is the engine is a 350 Mercruiser 5.7 and it seems way under powered. I can cruise 7 or 8 Knots at 2k RPM and maybe 10 at 25k RPM depending on sea state. I feel like I'm the slowest boat out there. Not that I need to go very fast but it sure eats up a day when Paddy hunting.
 
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TheWesNMads

Almost A Member
May 18, 2020
226
164
42
Yorba Linda
Name
Dan
Boat Name
1979 24’ skipjack fly bridge
Well after having and using the boat for almost a year now, I have a few questions.
Is there a Hard Top Pattern for a 1992 25 FlyBridge. I see Skipjacks with Hard tops wondering where they got the deminsions.
Next is the engine is a 350 Mercruiser 5.7 and it seems way under powered. I can cruise 7 or 8 Knots at 2k RPM and maybe 10 at 25k RPM depending on sea state. I feel like I'm the slowest boat out there. Not that I need to go very fast but it sure eats up a day when Paddy hunting.
How fast at 34-3600 rpm? That doesn’t sound right. I’m usually 19-25 mph depending on sea state at 3,000 rpm but I repropped. Before it was 3500 rpm to be at that speed. Vortec 5.7 and fly bridge 24. Are you sure it’s running right?
 
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GBENNETT

Newbie
Oct 31, 2021
20
48
San Diego
Name
Gary
Boat Name
1992 SkipJack
I've never had it past 25k. Another skipjack owner at my marina said you should never go past 30k on a 350 Mercruiser. When I bought it the sea trial we maxed the throttle and only got 14 knots in the bay.
The motor runs great. only about 450 hours. I just think its not enough motor for the boat. I seen other skipjack with dual motors and figured that's why mine is so slow. Not sure about the prop. It is a 3 blade.
 
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TheWesNMads

Almost A Member
May 18, 2020
226
164
42
Yorba Linda
Name
Dan
Boat Name
1979 24’ skipjack fly bridge
I've never had it past 25k. Another skipjack owner at my marina said you should never go past 30k on a 350 Mercruiser. When I bought it the sea trial we maxed the throttle and only got 14 knots in the bay.
The motor runs great. only about 450 hours. I just think its not enough motor for the boat. I seen other skipjack with dual motors and figured that's why mine is so slow. Not sure about the prop. It is a 3 blade.
That makes sense if it’s the older 260hp mercruiser 350 but you should be able to spin 3-3500 rpm all day long, 2500 rpm max is way too low. The vortec heads really wake that motor up. Some guys on the mercruiser forum say 42-4500 rpm on the 350 engine but that is too high in my opinion.
 
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Sep 21, 2019
306
478
46
Pomona
Name
Javier
Boat Name
Skippy 24 Fly
I've never had it past 25k. Another skipjack owner at my marina said you should never go past 30k on a 350 Mercruiser. When I bought it the sea trial we maxed the throttle and only got 14 knots in the bay.
The motor runs great. only about 450 hours. I just think its not enough motor for the boat. I seen other skipjack with dual motors and figured that's why mine is so slow. Not sure about the prop. It is a 3 blade.
Numbers should be stamped on the hub.
If you can’t go above 2500 rpm on a 5.7L mercruiser something is wrong. Maybe you are waaaayyy over propped. Like the WesNMads said rpm should be way higher. I’m pretty sure max should be 46-4800 rpm. That doesn’t mean you have to drive it at that rpm. But at wide open throttle when you are propped correctly it should not climb above that.
 

TheWesNMads

Almost A Member
May 18, 2020
226
164
42
Yorba Linda
Name
Dan
Boat Name
1979 24’ skipjack fly bridge
Numbers should be stamped on the hub.
If you can’t go above 2500 rpm on a 5.7L mercruiser something is wrong. Maybe you are waaaayyy over propped. Like the WesNMads said rpm should be way higher. I’m pretty sure max should be 46-4800 rpm. That doesn’t mean you have to drive it at that rpm. But at wide open throttle when you are propped correctly it should not climb above that.
It is a science finding the right prop. Especially difficult is not even being able to go max RPM because the ocean is never flat. I never found out mine although I spun to 4200 rpm once and it sounded like the motor was working way too hard, it got Us to 35mph though. Ocean was fluffy oil glass that morning. My goal with prop swapping was a 20-25mph cruise speed at 3,000rpm since it was 34-3800 rpm to be at 20mph. Too much gas. I just guessed going from a 3 blade 15.75”x17 to a 14.25x19 4 blade would get me there, I got lucky and it worked.
 

TheWesNMads

Almost A Member
May 18, 2020
226
164
42
Yorba Linda
Name
Dan
Boat Name
1979 24’ skipjack fly bridge
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