looking for HP/speed info
 

hello everyone.. as you know from the other thread i bought Jays Kryptonite. i was wondering how fast these boats go with different power and setups.

i set the carb with a wideband and set the timing and got from 87 to 89 with 3 people and 3/4 tank of fuel.

548 cu 650hp 5700 rpm 37 deg timing 12.9 afr XR lower 28P bravo1 89mph.

http://i27.photobucket.com/albums/c1...0046941683.jpg

Ray,
What the hell is that in the exhaust pipe?

Mine supposedly had 800hp when i bought it in 08. I ran a best of 102mph with it, but the PO said he had seen 106mph. Dont know where that extra 4mph was hiding, but I never found it.

After the rebuild I have seen a best GPS speed of 97.5mph. Non dynoed and not even really dialed in with either the carb or the prop. I am guessing that I am around 725hp. I have probably gone faster with a different prop that I broke, but my GPS speedo wasnt working all summer so I can not verify that. I am installing A/F sensor and EGT bungs as we speak, so the engine will be dialed in this summer.

They seem to run right around 90 with about 625hp, Powerboat tested one with a stock 525efi at just over 80mph.

You will pick up a ton of speed just by getting some people out of the boat. I pick up a solid 4-5mph from a full tank to an empty tank.

thats a wideband sensor. i ran it for that day to set up the carb

wow thats a big difference in speed with less fuel. ive only been out a few times so far. i wanted to get it set up just right so i dont mess with it once the weather gets nice.

my friend Ron who had the insanity boat was running 100 with 740ish hp (i dynoed it myself but i dont remember exactly) he also had a standoff box and imco shorty lower.. not sure how much difference that makes.

im not new to big block chevys or boats like this in general. i am new to owning a fast big block boat. i was running a hydrostream that ran 90s. what a different world! you can fall asleep running 90 in this boat haha

with 775 hp 104 mph with steel heads - updated to dart pro ones aluminum heads made 834. never got on it.

Yeah, it picks up a ton of speed with less weight in the boat.

I am pretty confident that I will run over 100mph with ease this summer. my headers are on their way back from CMI as we speak. I had to get some "water injection" cracks repaired and while they were there I had them weld in two EGT bungs and two A/F sensor bungs. I was running very rich all summer in the heat, I picked up a few mph just running in 60º weather in October.

I would say that if he ran 100 with 740hp, my guess of 725 or so should be pretty close. I have a -1 imco shortie and an ITS box, which gives about 8" of setback. I am just over 3" below the pad and would like to go shorter. DonRoc set his up with a -3 Imco and redid his transom, resulting in a setup where he was right at 1 inch below the pad with a notch and and ITS box. He ran 90.1 with an estimated 600hp. who knows how fast his boat would have gone with the 1275hp that he had in it.

id love to get my boat to 100 one day. id like to give a shorty imco a try too. how much do these boats weigh?.. rigged with no fuel etc

My boat with a full tank, helmets and lifejackets was 5100 lbs

That sounds about right. No people in it right?

So that would mean a 4500lb dry weight, give or take, considering 100gal of fuel at 6lb/gal.

No people in it and we only have a 60 gal tank

took it out today.. realized its sitting on the chip at 5800. put a 6300 chip in there and went 91 at 6150 im gonna add some pitch to the prop and see what we have.

so far all conditions the same, went from 87-91 with timing, a/f and rev limit adjustments

http://youtu.be/f5hhleT-t-g

good work brother, im sure u will get numbers u will be happy with for the season just by tuning and dialing! after a season of learning the boat and its capabilities u will by then be dropping bigger power in knowing u....

awesome! little bit bigger wheel youll be pushin 95!

yea, you know me.. my brain is defective lol i cant just leave it the way it is.

ill have the prop back next week. added some pitch and a little bow lift. hoping it will move it to 93 then maybe 94-95 when the gas is lower. next step may be an Imco -1 lower. id like it to be solid mid 90s all the time boat with this engine.

im really happy with this boat thats for sure. ive wanted a kryptonite for over 10 years

Just wait till you get her out in the rough, you wont miss the Hydrostream! Throw the tabs down and go like hell

Very Fast boat:eek: I know where that is just East of William Floyd Pkwy!My son has a house out there just before the bridge

props done ray.:party-smiley-004:http://s1155.photobucket.com/albums/...t=raysprop.jpg

lefty? :D

got the prop back yesterday.. comonnn 93!!! if i get 93 i think ill get 95 in the chop. thats great for the power i have

got 93.2! still at around 6200 so i may add a little more pitch. i want to keep it on the high end of the range so i can use the same prop when im loaded with people and gas.

today i had between 1/2 and 3/4 tank

i attempted a vid while i was driving and it didnt go too well lol you can still see it passing 92 though

http://www.youtube.com/watch?v=jjgc2...1&feature=plcp

When I Had The Kryptonite It Made 787 On Zuls Dyno,,,,, Ran 102 104 Any Day Of The Week Ran Best Of 106 Light On Fuel By Myself With A 32 Lab Bravo 1 Wheel,,I Am Sure With A Herring Wheel And Some More Dialing In It Would Have Went Faster,,,Good Luck With The Boat Ray////////

thats a sick setup.. id like to get there one day

Id check with JC before i spun that motor over 6k

im not too worried. you can run an eagle stroker over 6000rpm blowing it up.. but i dont plan on keeping the set up at that engine speed for general engine/valvetrain life. i wish i had the dyno sheet so i could see where peak power is. its most likely 56-5800. id like to prop it at 6000 in this cool weather so it will be at 5800 when its warmer and loaded with people. i need to start doing some work to a 30P bravo one

Hi guys,, My 2001 27' which sold to jdub and now to team goumada? Ran 108 w/naturally aspirated 598. never dynoed but assume it was 800hp. Tried many props and drive heights in the nine years I owned it. Bravo 1 labbed 32" @6200 running 2 3/4" below the bottom was the best combo I found and gave me the 108 on GPS. Boat was so consistent we used it to test other engines to see how they compared. It truly was a water based dyno! Best of luck and be safe!

Hey is this Holden? Im buddies with Ron. My friend Ed just bought that engine of yours that Ron had. Do You have a bravo 1 30p you want to sell?

Hi Ray, Yes it,s Holden.That's a really nice engine Ron had. I'm sure he'll be very happy with it. Sorry but I don't have a 30" bravo one at the moment but judging by your #'s your ready for one! Have fun.

Nice Ray,Good luck with your new boat. I'll be listening for you. Artie

running 93.5 in the long island sound

http://www.youtube.com/watch?v=XRvJp...vMXqX-UFgeliA=

Powerboat tested the one i currently own in Sept 1998 9 believe and with a stock 500efi and a bravo 1 28 pitch prop ran 82

installed some shortie headers.. first pic was before i shined them up :)

http://i27.photobucket.com/albums/c1...4246265193.jpg
http://i27.photobucket.com/albums/c1...4246247628.jpg

anyone tried a hydromotive prop on a kryp ?

I had a P-5 on mine when i bought it. Throwing a blade on that POS was the best thing that ever happened to me. Picked up an instant TEN mph by switching to a labbed Bravo.

Now a 4 blade Hydro might work well, or even a P-5X, which has much less stern lift and much more bow lift built into it.

Bernie the Hydro I gave you is one of Randys

just got the gps installed this past week and going to switch from the prop thats been on it since i bought it which is supposed to be a 28 bravo 1 to the prop i got from you. do you remember what that prop supposedly was ? according to speedo she's only hittn 72 at just about 5000 rpms w the bravo 1. what are you running on your for a good all around prop.

Bernie ,
Call me and i will help you with the prop -
you cant run the box stock bravo 1s on this boat -

jerry

My boat loves Bravos, low slip numbers. That was a custom built Hydromotive we Gave you...

jerry will be in touch after i try the hydro

im going to try the hydro this weekend i hope