Max RPM and Speed |
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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Posted: September-07-2008 at 9:35pm |
What should I be getting for maxs RPM and Speed from my unmodified 87 2001 with 351 pcm?
Currenly getting about 40mph and 4000rpm, It is enough but I am curious. I know you want to know what prop, I'll look soon. Do I have to pull it to find Numbers? |
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
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JoeinNY
Grand Poobah Joined: October-19-2005 Location: United States Status: Offline Points: 5697 |
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Thats a little weak could be overpropped, tired, or simply in need of a tune up 45 at 4500 should be in line for a stock boat plus or minus
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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It has about 900 hours, seems to run strong without faltering I will check the prop.
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
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phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6149 |
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My boat is slightly over propped. It has a 13x13 4 blade oj super cup legend. Its an all stock rebuilt 351 with about 230 hours. Its 30 over with stock compression. It does 4100 rpm's at 44 to 45 on the speedo. (its calibrated with GPS at 34 and 36mph so it should be deecently close on the mph.
Also it should have numbers inbetween the blades if not just take the castle nut off and the numbers should be there. |
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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Cool thanks to both of you.
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
|
OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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Hey JoeinNY, watched your holoe shot video, WOW Wish you were my neighbor, I could use a motor mentor.
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
|
JoeinNY
Grand Poobah Joined: October-19-2005 Location: United States Status: Offline Points: 5697 |
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Not a neighbor but I typically make it to the Minneapolis area 5-6 times a year. Thanks for the comment, I am going to need some encouragement to get back to work on that Mustang one of these days.. |
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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OK here is the prop info Simmon ni-brahl 13x13 super cup. Does that sound right?
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
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emccallum
Platinum Member Joined: August-08-2006 Location: Clarks Hill SC Status: Offline Points: 1084 |
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I believe that is the right/stock size, but I am not familiar with that brand (super cup?). You may want to borrow or try out a new/different prop. SKIDIM, although a bit pricier than say Delta prop, will allow you to test a prop. Try a search on props there is plenty of info for your model on props. Acme 540 is what I run.
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Luchog
Grand Poobah Joined: April-17-2007 Location: Argentina Status: Offline Points: 2135 |
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super cup is labeled in my Michigan prop, mine is 13x12 though.
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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I am thinking I may get this one tweaked for a little more power and then invest in the ACME later.
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13512 |
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I've got Federal 13x12 and x13s if anyone needs a test run. Too late for that Martinique.
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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Very generous offer,I think at this point I will wait till spring but I would appreciate trying before I invest $400. Will the offer still stand? and how would it work to get the prop to minnesota?
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
|
Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13512 |
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I'll UPS it to you, it would really only cost a couple bucks. Make a donation to the site. Supposing our ACME 540 stays in tact the offer(s) will still stand.
We've got 1100 hours on an 88 stock 351 and she turns ~4300 on a good day with any of the three props. |
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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Thanks Tim, This is just the coolest site with the best people.
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
|
phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6149 |
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I think the super cup is how the prop is cupped. My boat works a little to hard swingin that 4 blade it doesnt have as good of a hole shot as Id like it to.
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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What is your boat and why are there no pictures? From my reading I think I will stick with a three blade but a more modern model would sure be nice.
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
|
phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6149 |
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86 2001 stock rebuilt 351 with 230 hours.
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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Nice
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
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