racerxrick

love it...do it!

AtharRazvi

If you get a ball bearing turbo, get one with a divided hot side housing. You will have to modify the engine/turbo mount and crossover pipe, but I'm assuming you will have these capabilities. With the divided housing you will be able to run a quick spool valve, which should allow you to boost ~500-800rpms sooner.




Quick spool valve essentially makes your hot side half of what it is until you reach desired boost, and then will open it up to allow for top end power. You can easily make this yourself.

Boost is dependent on load, so you should be boosting quicker than a car...I would assume? West and RJ are good sources for knowledge, and they love to wrench. Good luck with the project.

MarkRobinson

that's pretty cool, I'll have to keep that in mind.

MarkRobinson

Boat is on it's way, & I think I have a running engine: anyone interested in an AIR widebody 951 race car sans motor/computers for $5500? How about on spare tires for $3900? ( Has BBS 17x11's all around).

MarkRobinson

I have a 60-trim DBB Hi-fi on a T3 .63 housing: I think this will be too laggy for my boat: I really need to get the torque down low, that means boost down low.

I might turn the boost up to yield 430-450hp MAX (top range of the turbocharger's capacity), and will run a ball bearing turbocharger for fast-spool, but any recommendations??

PS I wont be able to place the turbocharger under the intake as-per factory: I need to get it up high & centered on the exhaust tubes as pictured, heavily insulated and eventually wet-jacketed.

Gonna be fun!

Mark

lowside67

An LS1

944S2IFISH2

More motivation! Both of these ideas are just a little crazy. I like crazy though!

https://rennlist.com/forums/928-foru...at-thread.html

SD Porsche Fan

Sounds awesome! I love people who think outside the box and take on projects like this!

74goldtarga

First off, love the boat. Choosing a prop will be important to keep the engine in its sweet spot. If you choose a prop that is tuned for the high end it shouldn't put as much strain on the motor at lower rpm but will be slower out of the hole - I think. You need to think about what your RPMs will be at WOT and adjust the prop pitch and diameter for that - right? If this were my boat I would care about top speed and not so much about getting out of the hole - unless you are pulling skiers. I don't know if the outdrive changes the gearing on the motor or not. My boat is an outboard and I thought about trying to get a few more mph out of it but apparently that is easier said than done.

Black51

Question, are you gonna have to fill your gas tank with a jerry can every time you need gas? Or do you have a marine pump station with 91+ octane?

MarkRobinson

I'll use my racing fuel jugs.

MarkRobinson

Ok so my boat arrived: Motor comes out this weekend, outdrive is out: will be re-built with heavy-duty parts, re-powdercoated (www.legendgarage.com), polished/knife-edged Mercury racing prop, gear spray bar set, dry-sump lubrication, etc.

Need to locate a 944 block/pan with crank inserted to work on my motor mounts.

Currently, boat is being gutted in preparation for new floors, stringers, new engine compartment build-out to house the 951 powerplant & 3 air/water intercooler assemblies for coolant, oil, & intercooling. Fun!!

zerMATT951

Did it come complete with the holstered gun sticking out of the dash?

MarkRobinson

You live in Texas, you know how we roll.

951Saga

Looks like a boat load of work... couldn't resist.

And a dumb question, why are most boats right hand drive?

Thanks for sharing this project with us!