P4 setup

This topic has 9 replies, 8 voices, and was last updated 11 years ago by northern basser.

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June 1, 2015 at 3:54 pm #311406

northern basser
Participant

Hey guys,A buddy of mine is running a 2005 p4 with 200 Yamaha HPDI. Hes not happy with the performance, here are his numbers…- 25P Yamaha prop, 5100 rpm, 64 mph- 24P tempest plus, 55/5600 rpm, 61 mphJack plate is approx. 1/4 inch above flush.Has anyone else run this set up before and if so, what prop are you running?When we get some nice weather, we are gonna play with the jack plate.Thanks,Shane

June 1, 2015 at 5:29 pm #311426

christaylor
Participant

I run an Optimax on mine, but 69-70, loaded, is not out of reach. Tempest or Fury, both 25p. +/- 3″ below pad. I prefer the Tempest, better handling and liftEveryone seems to like something a little different.

June 2, 2015 at 3:03 am #311446

Bass Cat Boats
Keymaster

2013 P4, 200 SHO, 25 fury, 68-69mph 55/5600 rpm s. 1/4 above flush. I want to try a 24 fury to see if I can get a few more rpms and break 70 mph. Ed

June 2, 2015 at 4:02 am #311467

Bass Cat Boats
Keymaster

HPDI is not a big block in that year model and probably has cubic inches holding it some.

June 2, 2015 at 10:37 am #311476

Dwayne
Participant

Not all props are the same. Going down one pitch with a different prop design will give a totally different response. A true performance comparison will need to be with the same prop but different pitch.Practice Angling CPRCatchPictureRelease2010 PIV 200SHO

June 2, 2015 at 12:44 pm #311494

Bodeen
Participant

2012 P4…running a 24 fury on a 2012 200 pro Xs…loaded with 2 people around 69-70, by myself about 72-73

June 2, 2015 at 10:26 pm #311513

AMinDR
Participant

What is your elevation? anything above 2000ft it helps to lower the motor sometimes as much as 3/4″, I have run most mfg boats at 3600ft elevation and they all need lower motor settings as the air is too thin to lift the hull and the Horsepower drops off a little. that boat should run in the upper 60s easy enough.

June 3, 2015 at 5:16 am #311529

Basscatdreams
Participant

I have a 2006 classic and I think my jackplate is tuned in finally. I have a 2005 200 VMAX non hpdi. Ill try to get a proper pad measurement tomorrow. But I was hitting 5900 rpm and 69.5 gps. I went up another 1/8 inch to see if I can squeeze out that last 100 rpm and reach 70. I have a 25 P standard yamaha 3 blade prop. No manufacturer name on it. I also feel like I am using a lot of trim to get that speed and from what I hear everyone say is that cats dont like a lot of trim. I am probably using almost as much trim as I did on my 94 17.5 foot stratos with the 150 intruder. So i am hoping that raising the motor will allow me to use less trim to reach 70. I am a big guy, 300 and cough… so 69.5 might be the best I get with full tanks, livewells, tackle, and a 200 lb partner. I dont like to push an unfamiliar 9 year old motor that hard, but I want to know the speed is there when and if I need it.Edit: The top rpm range according to my manual is 6000. So I assume I can run it to 6000 and it will red line there or just over. I assume that the 2005 HPDI is also 6000. Mine is the 3.1L.Last edited by Basscatdreams on June 3rd, 2015, 5:20 am, edited 1 time in total.

June 3, 2015 at 12:14 pm #311542

Cape Fear
Participant

Northern basser I have a 2007 PIV with the same engine and prop. With 2 people on board I am running 5400 rpms and topping out at 65-66. I am about a 1 1/2 inches above flush. I am going to try a 24 Fury and drop it down to flush or 1/2 less in the near future. I think there is more to be had with this engine. I am carrying a heavy load with a 4 battery set up with my MK trolling motor.

June 3, 2015 at 5:15 pm #311574

northern basser
Participant

Thanks for the input guys. The first thing were gonna do is try to get more rpms out of the 25P. Ill post the results when I have some…I know that set up can be frustrating, but its a fun problem to have!!
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