Need help with Pantera hole shot

This topic has 6 replies, 5 voices, and was last updated 15 years, 4 months ago by dbasketman.

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January 18, 2011 at 6:45 pm #310719

Ray
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OK, I have a 2001 Pantera Classic / 2000 150 Opti. / 6 in manual Jack plate / 23p Trophy with no plugs in the holes (although they seem small-maybe 1/2 in dia holes). With the running pad setting level the c/l of the prop shaft is about 4 1/4 in lower than the running pad. With the tank full, all my tackle and water in the livewell it is really slow to get on plane and I doubt with another passenger, his gear and and water in the livewell it would actually get up on plane! Now when on plane the boat runs very well, WOT is about 5900rpm (43 deg calm water). Note: not sure how accurate the tach is as the rev limiter horn doesnt go off but the mechanic that rebuilt the motor seemed to think it was reading higher than the actual rpms were. I am not all that concerned with speed anyway but sure need aa better holeshot!I purchased this boat late last fall and had the motor rebuilt because of low compression so everything is new although it did run about the same as it does now. I know the 150 is a little light for this boat but dont have the funds to repower right now so Im hoping that someone out there has some experience with this setup and can help.I have owned boats for over 30 yrs but have never much been one to tweek motor heights or have props messed with just to get a few more MPHs but looks like I may have to now LOL, I sure would appreciate any help with it,Thanks!

January 18, 2011 at 7:32 pm #310726

MOUNTAIN CAT
Participant

I have a 2005 Classic with a 175 Opti. Yes, under powered. I had the same problem that you do. BCB recomended I set the prop as follows. Level boat, square motor vertically, set the center of the shaft down 3-1/2 inches below the pad. Believe it or not 3/4 of an inch makes a big difference. You can then adjust up or down in 1/4 inch increments until you get to where you want to be. Another problem I had was getting the right prop for my altitude. (5000 ft). Mercury has a table that will tell you what pitch to use for your altitude and motor. BCBs advise was more helpful than the prop pitch. Someone else will jump in with more, Im sure.Martin

January 18, 2011 at 8:29 pm #310733

tswanson
Participant

Try this for those situations when you just have too much weight in the boat.Start with your motor trimmed up just so it starts to blow out.As the motor RPM goes up, bring your trim down so the prop bites and goes.If you get good at this you will not over rev your motor nor will anyone guess what you are doing.You can take off not plowing water and get on plane quick if you do it right.The goal is to get the motor into the power band asap so it can build power.2 stroke motors do not have low end torque like an equivalent sized four stroke motor.

January 18, 2011 at 9:19 pm #310740

Bassdeer
Participant

MOUNTAIN CAT wrote: I have a 2005 Classic with a 175 Opti. Yes, under powered. I had the same problem that you do. BCB recomended I set the prop as follows. Level boat, square motor vertically, set the center of the shaft down 3-1/2 inches below the pad. Believe it or not 3/4 of an inch makes a big difference. You can then adjust up or down in 1/4 inch increments until you get to where you want to be. Another problem I had was getting the right prop for my altitude. (5000 ft). Mercury has a table that will tell you what pitch to use for your altitude and motor. BCBs advise was more helpful than the prop pitch. Someone else will jump in with more, Im sure.MartinI have a 93 PII and live in NM, I have to have three props for my state. I use a 21 pitch for 5000 ft or so, 19 pitch for 6000 and above and a 23 pitch for sea level. Ray try plugging some holes.

January 18, 2011 at 10:42 pm #310753

dbasketman
Participant

On the old PIIs we used to set the engine at the lowest point we could and still tilt up the engine without the cables hitting the transom !(Mark Davis style) Then prop the engine out to suit youre needs. I ended up with a 22p Predator, which preceded the Trophy which would now be the choice. Some even ran the old high Five Merc. prop for holeshot, but the 22p four blade would outperform it on most rigs. That was a carbed engine, which was a bit stronger, but id try a 22p and see what you get.Lots of PIIs ran 150s back then, and they performed well on that hull. We were running those engines 6000rs, and getting 60+ top end speeds, loaded. Good luck, D.

January 19, 2011 at 3:07 pm #310761

Ray
Participant

Thanks for suggestions guys, I really appreciate it! I may have to call the guys at Bass Cat for some suggestions too!

January 19, 2011 at 10:14 pm #310768

dbasketman
Participant

BCB monitors all posts on this board very closely, any misinformation would be quickly corrected. So,,,,, you already have called BassCat !
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