How Much Horsepower
 

To make the following boats run 95 MPH?

29 Outlaw

33 Outlaw

36 Outlaw

40 Outlaw

Alot:D Although I would like to try and get that out of my 36 but i'm sure it's like 1000 a side.

Dock According To Bill Schumaker He Could Get My 36 To Low 90s By Taking My 502 To 509 With Prochargers And Repropping. By The Way How Are The Upggrades Going.

Where is Jason for this one, I am sure he has done the calculations :D

I know how much to make a 29 get there!:D
JT's 33 clicks low 90's with 575's

http://www.go-fast.com/boat_speed_predictions.htm

Play with the weight untill you get where you are with your current setup. You know HP, so use that as a constant.

I'm figuring ideal day, low on fuel,
low on weight (people)
minimum amount to get there:

I'm using propshaft hp.

29......700+

33.....750+
36.....850+


40.....3X750+

let me rephrase: crankshaft hp.

Done the calculations, stroked the checks & broke the parts. I'd get the t-shirt, but I can't afford it anymore.:D

VERY SLOW

Just like your boat, huh?!:party-smiley-004:

Thanks for all the input. I pretty much agree with you all.

I have seen two 36 Outlaws run 90 to 92 MPH with 850 HP per side.

Crayola Crazy (33 Outlaw) is pushing triple digits with 850 HP per side. But he does have a pad bottom which has to be worth a few MPH.

The 40 is another story. If I really wanted top end speed with a 40 OL I would opt for big twin power in the 1000HP range rather then triples. Just me.

I have found that it is pretty easy to build 900 HP, just hope it is as easy to get a drive to live behind it.

Dock, I'll let you join the "New drive of the month" club with me. I'm not only own the club, I'm also a member.

I have two brand new XR drives and will soon have two completely rebuilt HD ZR drives. Should I go ahead and order spares?

Yea, the way you are getting the HP is gonna be hard on stuff. You'll be better off than I am because you are more responsible with your right hand than I am.

Doc
Whats up your sleeve? Just drive updates or some secret engine tweaks:cool-smiley-027:

Hell I am still trying to join the 80 mph club..haha. My wife wont approve with some nice new blue 525's....inplace of teh 496's...I supposedly bought the boat from me and my friends not the family........
Dennis

We had a local dealer that had twin 900's in a 40 that barely cracked the 95 mark but that was after a lot of Lake X testing and even more tweaking. Don't know what ever happened to the boat though.

Whats up fellas My motors make 810 hp 5600 rpm 7.25 lbs boost I have to look at dino sheet to see torque no. 97 /98 full of fuel I,ve see 100 three times 99,5 a bunch of times I got 98 mile an hour boat. Im playing around with my center of gravity the boats 1.5 mph with people in the back seat be carefull how beefy a drive you run it could cancel out your hp I run xz uppers imco lower ,yes I can smash them at 3500 rpm,s I,ve only broke 4 since 02 and one of them I was stock

konrad drives:D phuck the xrs

I'm with you as far as getting the 40 to go faster, however...

After running a triple, I have found there is 1 variable that HP just cant fix alone, that is efficiancy.

With having the 3rd drive lower in the water and the hull spitting the water out the back, the props appear to cut the water much more efficiantly, thus pushing the boat through the water.

I also think having the third motor sitting forward, the weight is better distributed. Now if twins w/staggerd stance were installed that too would help the issue.

We have also played with our x dimenssion and that too has made better speed.

Smaller triples do aquate to the same speed with less wear/break issues.

It sure will be interesting to see what Baja's new poker run boat will run with the 700's. I have been told there is ALSO many changes to the 40, weight savings, pad, notch etc. It's going to be a great next couple of weeks when it is shown /ran in public for the first time openly...

I can tell you that a heavy 36 with around 725 hp will run a legit 86. I hope to tell you that it will go 94 with 825 per side this summer. I also need to try std length drives as well because my 1" shorter drives have cost me some speed.

I was told by Tyler Crockett that it takes 16 hp to go 1mph in most boats on twins you only count one side

Smitty I would add 100 lbs to the stern ,you will get some bow lift ,less wetted surface and your props will bite your slip facter should drop if theres no difference I have every sieze spacer 1/2 to 1.1/2

You do realize though as you go faster it takes more hp to gain a mph. For example-a boat at 60 may increase a mph with 12 hp per side buit that same boat at 95 may need 25 hp per side,Smitty

Thanks Crayola

I will try the weight and if that doesn't work I will be calling to try some spacers !!

Thanks

Smitty

Brian,

You and I discussed this before and I find it very interesting.
I have only rode on one boat with triples and it was an older Outerlimits and he runs a shortie in the center.

I hope you have a very nice boating season.

Dock

Sounds good to me!

I keep running the numbers over and over and have to agree with you on the 94 MPH speed. We are taking the 36 off the market and going to drop the big power in it and see what happens. If I am not close to 94 I will be surprised. Once I get a feel for it and see where we are I plan to change the blower pulley and see once and for all what the real top speed will be with 900 HP per side.

Project "FAST36" is back on.


Baja before Fountain

Dock,

Thanks for you latest decision. I was worried about you even though I knew whatever direction you went it would be nice. I want to see what your speed is going to be as well.

Mark

Dock,

Sounds like a plan. You have a beautiful boat that is all sorted out. I always thought you should keep it. I just got my shortblocks home wed nite, so I will be busy assembling them to get ready for the dyno. Did you dyno the engines with Mark?? If so can you PM me with the final HP numbers?? I estimate I should be between 825-875 when done. We should be real close to each other speed wise, but I am suffering a little with the shorter drives. Lets keep each other posted .

Thanks,
Smitty

Smitty,

I was hoping to see one of the motors on the dyno this week but Mark got way ehind with all the boats coming in for the Tickfaw 200 this weekend. He just finished a triple engine 47 Fountain and was trying to get a 35 Fountain done today for the run tomorrow.

He said he would be full blast on mine next week and get them finished up.

I should be 100% finished with the bilge this weekend and ready for the new motors. The bilge looks great and is a huge improvement from stock with all the wiring and plumbing really cleaned up.

I excited about your project and I will definately stay in touch and we can compare numbers. I'm thinking about starting with stock 32 pitch props and go from there. What are you running for props?

Thanks
Dock

You are welcome.

I love every boat and can always find something good in anything that floats. But we are truely Baja folks and have really enjoyed the 36 Outlaw. Funny but I was thinking last night while the wife and I were discussing this about the summer we bought the boat and hoping one day that I could add some big power and see what happens.

It would be stupid to be this far along and not find out.

Dock,

I did the same thing many years ago with a car. Was just a few hundred dollars away from big power in it, made the decision to trade cars. Still think back time to time and regret not doing what I wanted to do first. I am talking 35 years or so!

Good luck.

Mark

Dock,
Right now I am running 28" Labbed Maximus props. I have to run fiveblades otherwise it takes too long to get on plane. I am also going to be turning 6000 rpm with the new motors versus 5500 with the old. Hopefully the increase in rpm will get me my 5 mph I am looking for. Next year I am going back to stock length drives with the hope of getting back the speed I have lost along with being able to run 4 blades and still plane out OK.

Smitty

What do you think?

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Well they are finally ready. What was going to be simple became very complex and took about three time longer then I had planned.

But the bottom line is I could not be happier with Mark Boos and his team at Precision Marine. He has really educated me a lot on the engine building process and he has made it an enjoyable process as well. He really worked with me on this without ever a bad word even though I changed th plan twice.

First he was going to add new heads and Whipples to my existing 500's. Then the parts took too long to get from the original vendor and I finally received my money back and Mark ordered them for me (BUY YOUR WHIPPLES FROM MARK - TRUST ME). This put us three months behind. Then we decided to with new blocks and stroke them to 540 CI. He had no problem at all in changing the plans. Then I decided to keep the 500's in complete stock form so we started ordering all new accessories for the front and the back of the engine including but not limited to computers, wiring harness, pumps, brackets, pulleys, flywheels, oil pans, couplers, etc, etc, etc. Then about half the parts I ordered came in wrong. This put Mark in a bind because boating season was here and he was busy but he simply said "Welcome to my world" and we worked though it. The final product is simply awesome. The front is the exact setup that I have on the 500's with Merc blue pulleys, they have the MEFI4B computers, braided oil lines you name it. We spared no expense and Mark did it right and exactly the way I wanted them. The rigging to me is harder then the actual engine building but Mark and his crew do outstanding work.

If you ever want to see a real first class professional run engine shop complete with a full machine shop and state of the art dyno room Presision Machine in Kenner, LA (New Orleans) is the place to go. They do EVERYTHING 100% in house except for balancing a crank. Mark is the best computer man I have ever seen. He talks so far over my head it is not funny. But the key thing I have learned in this process and want to share with you all is this. Most of us can build an engine, but it takes someone like Mark that has done it for 30 years who knows all the down falls and what not to do to really build a strong and reliable package. If you are going to spend the money and want it right the first time you need Mark Boos or someone just like him. You wouldn't go to the eye doctor for a heart attack and you don't take your Harley to Walmart for service. Go to the specialist that knows what he is going. One thing you will learn about Mark being around him and talking with those in the industry that know him well is he helps a lot of folks with computers. Man can this guy make a computer talk!

Okay we set these bad boys up at 800 HP with 6-1/2 PSI of boost at 5400 RPM. They actually made 824 . The best was 950 HP with 11 PSI of boost and they made an easy 705 HP at 5200 RPM with only 3 PSI of boost. These things are torque monsters and drives are the next big concern. I'm waiting to see what Conrad comes out with this fall and if they don't offer anything better then IMCO I plan to upgrade to the SCX this coming winter.

http://www.youtube.com/watch?v=J6aUAEIPSNM

Here is a video of engine #2

It's been fun and I'm glad i finally did it.

I want to thank Mark and his team along with Dustin Whipple who was a big help and a pleasure to deal with.

The bilge has completely been re-rigged, painted and has a lot of new trick components including by gift from Baja on the new single battery switch and enclosure which is really sweet.

Enjoy and I'll post some pictures as we complete the project.

Nice work Doc, the motors sound good!

Thanks we really tried to do our homework and get it right.

They are a 1st class operation , Im glad im a part of the elite group that goes to precision marine . im glad your happy , hope you enjoy the rest summer.:D aj

Sounds really strong! Congrats.

Thanks AJ