Twin Turbo Build
 

Coming from the car world I am quite shocked at the lack of turbo builds, products, use in the marine world. Now getting into a boat (Baja 240 sport) I want to apply what I know about turbo applications for a fun project this winter.

I will first start off by saying that I am sure there will be many negative comments, instant debbie downers, etc. If you don't have something good to contribute or at least constructive criticism please leave this thread alone.

I am starting this to help gain more knowledge about the marine applications in general, Big Block's in general, and compile that with my knowledge of turbocharging to hopefully end up with a pretty cool build in the end.

What I have to start with:

Boat: Baja 240 sport

Engine: Tyler Crockett 502. Edelbrock 310cc ported heads, Merlin Intake, Quick Fuel Carb, Crane Cam, made 610 hp and 613 tq. Has a new in 2012 Bravo X drive with a 4 blade 26P and has seen 74.5mph GPS.



My thoughts and initial concerns:

The current engine. I have no desire to boost a carbureted engine. I know it can be done but it's far less complicated with EFI and tuning abilities opposed to a blow-thru. I am up in the air to either sell the current engine I have and drop in a complete 502 MPI or 525 EFI. I feel this would be the more expensive route. The other option would be to sell off my nice Lightning headers, Merlin Intake, and Qucik fuel carb to put towards an Edelbrock XT intake manifold/ throttle body, better fuel system and Holley HP EFI set-up.
What are your thoughts on this?


The goal:

To do something I really have not seen out there and have a very reliable, very unique twin turbo offshore I can take out and enjoy whenever I like. I would like to run low boost, comparable to what many people make with 5-7 psi from a Procharger on a 502 mpi, but of course maybe a little bit more power ;)


Goal is to construct a set of manifolds first in Solid Works and make the drawing a reality. I then have many turbo connections and already have what I would use picked out. The rest then is simple fabrication on the turbo side of the game. Getting the engine in proper form first is my biggest concern!

Exhaust needs water.

There is a Checkmate on this board that runs over 100 with a pair of hairdryers. Look for his build.

There have been a few others too.

I don't think you'll see too many going down on debby, I mean debby downers, or what have you.....just a lot will follow your build along with trials, tribulations, success (hopefully), and tantrums. LOL.

Good luck, Have fun, and I'll be watching.

None done inexpensively.

Haha, it should be a very fun project (and certainly a pocket emptier).

Exhaust will all be watered!

I love turbos! I have a set of compounds on my power stroke that pushes over 50 psi and makes 700 HP and 1300 pound feet of TQ at the wheels. On Ur boat I think heat is the real issue. I don't see why you couldn't take a set of marine manifolds like my Dana marine flow TQs and make an adapter that would allow you to bolt on a turbo in place of the riser, then build a new dry riser to come out of the charger and exit the boat. Just run a jumper hose from the lower manifold, around the hair dryer and in to your new dry to tip tails. Then a boat load of heart wrap around the charger and maybe?
Just my ideas. Small baby turbo on each side. Sisters!

We are going to design and build a set of water cooled manifolds. Then use water jacketed turbine housings, water jacketed downpipes, etc.

Fancy!

Looking for some guidance as to what to do with the engine? Convert what I have to EFI and run it? Or sell my engine complete and pick up a stock 502 MPI or 525 EFI, etc?

OSO's own (Check300) Single engine, #6 Drive, 3blade

with a handle like Superman, use your x-ray vision to look through the walls at Merc and get the skinny on the 1350 :rolleyes: all kidding aside, I saw a twin turbo monster at Smith power make 1749 hp and when Brad shut it down the torque curve was still climbing, good luck sounds like a sweet project

:funnypost:

don't even bother with the merc EFI (you have heard this before) need a aftermarket multiport EFI, with a laptop tuneable ECM, there have been a few that did turbo's over the years, seemed to work well but never caught on, now merc has them so should see more now...we race a turbo LS car and love the power that can be made, keep us posted..lastly that boat is not great for speed to you will hit a speed "wall" soon and will be frustrating no matter what power you throw at it...had a friend with one and spend stupid $$$$$

Yep, planning to use FAST XFI or Holley HP, however I am thinking of picking up a factory engine to use for mock-up so the kit we make can fit a newer OEM engine and clear all of it's components.

Boat, definitely understand that. Plan is to get our feet wet with low boost and show what the kit can do to work out the bugs in this hull and then upgrade to something MUCH fancier ;)

Turbo LS1, where we come from ;)

http://i291.photobucket.com/albums/l...psc8aead02.jpg

http://i833.photobucket.com/albums/z...psffwitvqz.jpg

http://i833.photobucket.com/albums/z...psu2fevjys.jpg


http://i833.photobucket.com/albums/z...ps8p3zmuwl.jpg

Superman09, Fordtrucks is correct as you can see in my photo's Dana Marine Flow TQs work real well!

They actually run an individual primary tube for each exhaust port all the way to the end also.

For the cost it's not worth your time designing, and fabricating.

I work in UG ( Unigraphics ) designing everyday, so I understand your passion and Ideas.
I also understand the time it takes to bring it full circle.

Spend your time designing the items that are not Shelf items/store bought.
Because when they fail from time, heat, fatigue etc. you can just buy another one.

But when it's your own part that fails, it's your time to re-create, re-fab etc.

Don't get me wrong I like unique, I like new technology, I like different, I like totally custom.
And with a turbo set up there are plenty of custom parts to make for you work space as
you can see in our photo's.

Look forward to your build!

Jon

Big Stuff3 great software

Jon

We have more ambition than just a one off build ;)

I will check out the manifolds for sure, however we already have some pretty cool ideas we will shortly be putting together with solid works and then into a 3D print for mock up. thanks!

Here's ours...
http://i227.photobucket.com/albums/d...ps6696fc11.jpg

boat...procharger

http://i227.photobucket.com/albums/d...pse6b4071c.jpg

Talk about the ultimate sleeper, damn.

We ran it for the previous 2 summers at 1730 HP. It was pretty quick! :)

Nice set-up check!

I can only imagine. Do you still own it?

There is something about a single #6 that just looks badass!

No doubt..

I am doing a twin turbo 547 inch Ford for my 26 daytona cant wait to get it in the water

I would say use the motor you have and sell that intake and carb and a nice single plane with a big T/B and rock on.

I look forward to seeing this build. Nice looking f-bodies BTW

Thanks! I like this idea the most as well, however my biggest concern is that we hope to be able to make more than one of these.... I want to build it and have it all clear any accessories and such that may be on other factory engines such as the tank up front on a 525 efi and what looks like another coolant tank up high on the right side as well. I just don't know the differences of accessories and such to build all around. Would like to make this set-up as universal as possible!

I say build an LS motor for it, the weight saving alone will help that boat. Should be able to make better power than what you have with turbos.

Has crossed my mind but I want to make something marketable as well.

Doesn't Hardin MArine have a twin turbo set up now ?

We want to build, not purchase.

Curious to see how the plumbing is.....tough to package all that on a side by side.

I understand and applaud.

Was just pointing out there is a competitor. That's all.

Non verbal communication is not my strong suit. LOl.

haha no worries!

That's fine!

We plan to do our very best to make it as compact as possible and our second test mule will be in a very tight side by side twin boat ;)

well I'm glad you have deep pockets.hope it works out.
I'll be modifing off the self parts to hit my hp/tq goal.

package it similar to merc and you can get it tight.

Not that but more so just to show what we can do!

you have a shop?and or access to cnc machining?

Yeah, both

thats great,,no brainer on making your parts,,wish I had that kind of equipment.but then I'd never sleep.

Awesome project. Banks used to make turbo BBC marine motors. IIRC they used water cooled manifolds feeding water cooled rayjay turbos.