Did we find anyone that put on -2s before boxes?? Just curious and figured I would bump this thing! Summer here yet?? I have a lot of lil projects so the sooner it comes means I already did them !! lol

I'm watching for a set to try but haven't found any yet. Need 1.5. The guys at XT told me I was basically dragging two anchors behind me.

meaning what ?

Meaning my boat is going slower than it would be if I had a lot less drive in the water. I told him i was planning to go down a prop size and he said if I raised the X I should have no problem obtaining more speed/rpm out of the props I have now (28p).

No summer yet, did ride the Harley for the last time yesterday, for speed gains -2 lowers is the best we can do without messing with the transom, boxes are cool but way to expensive for the cool factor, JMO, Purdue Im running the same props as you, cant really spin em over 5100

Do you have -2 lowers? What power out of your 540's? Are your 28's labbed or stock? I agree, I don't think the boxes are worth the money either....

Cant anybody chime in with higher drive height without boxes? Docking performance is a little to get use to with boxes. With high drive height and no boxes i would think it would be non-existent.

What would be non existent? Ability to dock?

stock bravo 1's & props, motors dyno'd 630 each

No, not the ability all together, just reverse thrust. The higher the prop the water goes into the transom and makes the thust a little useless. Even with boxes you have to get use to it. The side in reverse requires a little more throttle to get good results. If you put it 12 inches closer to the transom (no box) I imagine it would be a field day.

Again, somebody with high drives and no boxes needs to chime in to make me a believer.

Keith, if they raised the X in 01 or so, wouldnt raising drives (i.e. shorties) only duplicate that gaining a few mph?? That was my thought process anyway.. seems logical....

also, raising spinning out would probably be better than spinning IN. That was the same as you described, no thrust in reverse. First time I backed off trailer I noticed it. required a lot more throttle to get off than normal but not impossible just needed a lil more stick.

So how do the 2002 nd up guys back up?

http://www.popyachts.com/View/34788

Anyone know this boat? Has boxes but appears to have the short lowers.

The lowers look stock....either they're painted silver or the paint has been stripped off

I see now. They just painted the underneath side. Weird...

Tell us more about your boat please. Everything. Then we might be able to help more!

But mine had boxes and ran 97 loaded daily so I might not be any help......darn

Offshore, whats your prop shaft height?


***When is the power going back in Unleashed?

I have a friend with a 2000 33 with whippled 502's. He put -2 shorties on no boxes and gained maybe 2 mph. He really wasn't happy with the gain vs cost.

I forget what it was I posted on here somewhere, but honestly not sure if I even measured perfectly. Some measure on the inside of the drives some measure on the outside. I tried to measure both and split the difference. I will call Chris the very happy new owner and ask him to re measure. It was somewhere around 3.25-5.25 at the nose cone.

Engines are out of unleashed and torn down getting rebuilt as we speak. I will start a thread once more progress is made!

Where did his slip numbers go? Was the gain of speed a byproduct of RPM and increased slip? Was the handling improved?

I have a 2002, spinning 26s, out. stock everything.

Tried spining them in and picked up notihng, but did notice the degraded thrust in reverse.

Harley, what kind of speeds have you been running loaded/unloaded? You have mags right?

Hi all,
I hope you can help. I have a 2000 Outlaw 33 with 550cu in procharged M-4 10lb boost with over a 1000 hp per motor, imco scx uppers and 2"short scx lowers 1.36 ratio with 32 4 blade props labed by Bblades turning in, and I think the center of props are about 4.75" below the hull but I have to remeasure to make sure, no extension boxes and I can only get 90-92mph at 5200rpm and 10lb boost. My boat mechanic told me that the boat its not getting the bow lift and that's how baja hulls are. Reading the posts you guys are getting the same or better speeds with much less power than main. I was hoping I will get over 110 is it possible? Can anyone tell me where is the mistake?

Welcome to the site!

Some ideas

Extension boxes, blueprint the rear portion of the bottom of the hull, new scx 1300 lowers blueprinted by WCM might help, lighten the bow of the boat and add weight to the stern.

103 sounds doable maybe 110 if you dial her in perfect......

JT and myself have the poker run cabin, Crayola crazy has a custom one off pad bottom so our boats are naturally faster

Post pics please:drool1:

boat has 496 Mags, (NOT HOs), bravo ones, and bravo 26s.

I can ALWAYs hit 66 no matter how loaded.
Empty and choppy for the river I got 68 1-2 times.
I have hit 69 ONCE in the Pensacola pass following some 3 foot swells.

Not bad for the loaded version, (Genny, AC, Vacuflush)

No clue and he doesn't remember all that, he did all the work 10+ hrs ago, he just said he wasn't happy at the cost vs speed pick up. After reading it really sounds like it's pointless unless boxes are added.

I dont think you would find me in a 33 at 110, mistake ?? it doesn't have sponson's :santa: I agree if your realy making that power u should be faster, Welcome

Kevin covered it pretty good.

The SCX lowers have been known to cost some speed loss....Wilson seems to be able to make them work.

Check the running surface area from the end of the inside strake to the transom and from the edges of the outer strakes for straightness,

Next is the weight distribution.

I would imagine you have aluminum heads ?....if so, you took weight out of where it's most needed.

Here's something to try.

Pick a day that is relatively smooth out

Take all the junk that is stored in the cabin out including cushions and access covers etc....a little bit of weight that far forward adds up.

Get a couple hundred pounds of sand bags and and strap them to the swim platform, run the boat and see how it works.

If you do indeed have a center of gravity issue, this should prove that.....then you have to address that.

I don't see you getting to 110 with the current rpm you're turning....110 is what I come up with at zero slip

Yep, shes running good.

ok for the comparison.. basically same power vs my 454 mags and you have raised X

I hit 63 usually with most loads.. lighter, 64 and 65 with just me 1/2 fuel and 80 degrees low humidity.
The humidity over here really kills my power for some reason.

Ran 64 in orange beach with 6 adults also.

moral is it seems the raised x is good for several mph or more considering you have condo package!

oh.. I was only able to hit 62ish with 7 adults, 2 54qt coolers, 1 soft cooler and bags in cuddy for womens accessoreis towels etc. Weird thing was she would pull strong till abour 4500 rpms running 60 easily then when I put her in the corner, she didnt gain anything with all the weight.

note: I do have something going on as i felt a lil bit of miss, not enough to lower rpms but enough that I could feel some hesitation around 4k rpms or so.. Thinking I need to check/replace wires and plugs?? injectors were just flow tested 50 hours ago when they put new long blocks in.. Anything else cause that?? initially thought it was passenger moving cockpit causing it.

Ignition control module would be worth a check.

how do I check that?? What does it actually do? Never really dealt with one...

Thanks,
I will try it next season. Do you think that the 1.36 ratio and 2"short lowers could be too short, before any modification it was doing 74 on 1"short imco lowers,1.50 ratio, and 502 motors. You right i took weight off the back replacing the heads but i think i put more weight back on by putting: superchargers, 4 optimas, and imco scx' versus bravos. I add two more bolster seats, so now it has 4 bolsters and a bench. The prop slip is about 25%, the motors should be turning 6000rpm, but my mechanic told me that it will get the rpm's if it will get the bow of the water. I also tried 30 4 blade lab finished props, but I had similar numbers. What you think

your slip seems high.. Who labbed your props? or at least the 30s you tried. I have always had good slip numbers from stock 25p m+, 23p m+ and stock and labbed 24p B1s. btw 9 and 11% slip.
Have you tried putting spacers to bring back down. If you have SC 502s, you should be running 74 with our stock lower X.

What did you do first? SCs, lowers? couple guys on here should be able to comment on that hp range and mph.

If it was running 74 with stock 502's, it was set up pretty good.

The extra inch might not be helping matters, but the " not so svelt" SCX lower might be
trying to climb up out of the water.....do a search on SCX speed losses

Do you still have your 1" shorter lowers ?

I sold the SC lowers, so i can only go with the spacers. Today i did remeasured the center of the prop and is exactly 5" also i checked the hull and the last 10 feet its straight as arrow , so it was blueprinted before or came straight from the factory. JT I was thinking of going with 5 blade props like yours, but i don't have the extension boxes. Also I noticed that Imco is selling blueprinted lowers now for extra 1,000 so definitely has something be with it. Who is Wilson, how can I contact with him, you mentioned he blueprints the lowers, also I think Bblades does it too. Also my 4 blade props 32 where labed by Bblade twice, there is really lot of cup, unfortunately its not working in that setup.
Thanks for replays

Define "Not Working".

This is why I dont think you can go high at all without boxes. You wont carry the bow. The 5 blades will work great at cruise...
Good luck at top speed WOT - this is where crazy stuff starts to happen like breaking the down shaft in the lower. :)

Is your cuddy optioned out with TV or fridge or other "stuff"? This is where it all starts to hurt speed.

Start with adding extension boxes and STOCK bravo 4 blades (fwiw my boat ran great with a standard labbed 30 by mercury racing, NO added cup....)

Then have Wilson Custom Marine http://wilsoncustommarine.com/ blueprint your lowers OR purchase the newer version of the Imco SCX 1300 lower (and have it blueprinted) IF yours are the older blunt nose version

I'm not thinking clearly today so hopefully JT or CrayolaCrazy can chime in and help...... but as you move the drives back you can move them up at the same time since the water leaving the back of the boat angles upward back towards the surface. SOO...maybe try some -2 up extension boxes and maximus 5 blade props.

dialing a boat in is the hardest part, but you have a sweet boat, with a TON of power, that would be one badazz ride if you could dial her into running consistently over 100mph!

Post some pics of the boat, drives, engines, etc!

THanks man, maybe one day we will ge to meet up down south!

UPDATE to my issue.. I found the problems this year after it got worse after this same PR. Ended up being vacuum issues going to the FPRs. Runs strong to 5k now.