Custom/Hybrid Matt_E's Superfreak Build

Just my lil' old big bore engine that I've had for a couple of years now.
It got freshened up over the winter, though.
Details:

Jetworks 62T/61X Big Bore 84.5mm, 763cc
200 psi compression
Jetworks reeds
Dual 46 BlackJacks on a Riva manifold
ATP Flame Total Loss
B-Mod pipe
140mm Magnum Pump with 13/18 impeller and Wammer/Thrust trim

It did alright in my last ski. :biggrin: See avatar.
It'll be interesting to see what it does with 80lbs less ski to drag around.

AM flame arrestors w/ Outerwears like Art likes ? Wondering about dual 61x airboxes on BJ'S and expensive adapters ?
 

Waternut

Customizing addict
Location
Macon, GA
You will definitely need a taller prop. You are wasting time using the same prop.

If you take that advice Matt, I have a 14/19 prop on my mag that I'm looking to repitch to 13/18. Maybe a trade would be better. I haven't measured my outer diameter clearance yet though.
 

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
F/A's: I was talking to Art about this yesterday. He said you don't necessarily have to have the expensive adapters. You can invert the oem base and somehow make it work. Myself, I like running proks.

Impellers: that may be an option. I'll know more once I get a little closer to water testing it
 

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
What motor are you planing on running? Jetworks motor?

Yes I am.

Just my lil' old big bore engine that I've had for a couple of years now.
It got freshened up over the winter, though.
Details:

Jetworks 62T/61X Big Bore 84.5mm, 763cc
200 psi compression
Jetworks reeds
Dual 46 BlackJacks on a Riva manifold
ATP Flame Total Loss
B-Mod pipe
140mm Magnum Pump with 13/18 impeller and Wammer/Thrust trim

It did alright in my last ski. See avatar.
It'll be interesting to see what it does with 80lbs less ski to drag around.
 
I have the same motor in my surf hull, 89lbs, warmer trim, mag pump set back and it hard as he'll with the 14/19. Also ran it with a 13/18 and a 12/17. 84mm nozzle
Even the scream ss865 is running a 14/19 mag
 
Last edited:

Pablo

sqeez bth levrs & lean bk
Site Supporter
Location
georgia
Some pictures from last night. I didn't do much. I tried fitting the pump. With only bolting up the front two, the shaft seems perfectly centered in the bulkhead hole.
The rear two mounts don't line up 100% with the pump, which is to be expected with a custom build I suppose. No big deal, I'll enlarge the holes in the mounting tabs.

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Notice how wide the intake is and how the hull is a bit concave right before the intake.

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Fitting the intake grate (Perfect fit!), plus a couple of stock length Superjet plates on there. Yah, it's short!

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The battery tray. I was confused when I looked at it and had to call Tem/Nancy to figure it out. You just run a single strap looped underneath the plate.
Metal battery box for sale I suppose.


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The carbon exhaust tube:

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My Cold Fusion ebox mount.

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Matt...get one of the large bpipe coupler-metal gasket holders for ur battery...Deka EXT-9. It's easy to secure/unsecure and the battery is super secure. I tried a one-piece velcro that strapped to itself, but it disentigrated on me after lots of fuel, oil, water spilled on it.
 

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
I spent a few hours today installing a stock waterbox, stock tank, the motor, and some other stuff. I also weighed just about everything.

140 Mag pump complete with impeller, shaft, Wammer trim + cable + lever - 22.6 lbs
Stock waterbox with two very short elbows on it - 5.4 lbs
Motor + ebox + head pipe + mid shaft assembly - 87.4 lbs
Stock tank - 5.8 lbs
4 Motor mounts plus 2 Kenney Keepers - 1.4 lbs
Intake grate (W201) - 1.25 lbs
Long exhaust hose - 2.8 lbs
Handle bars, grips, throttle, s/s switch - 2.4 lbs
Jetworks battery - 13.2 lbs
B-Pipe chamber - 3.9 lbs

Totals up to 150.06 lbs
I think I may be able to get under 250lbs for the complete ski.

Pretty much everything bolted right up. I had to elongate mounting holes in one motor mount (and Kenney Keeper)
Pictures:

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The stock tank is a bit of a tight fit in this hull.

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This hull is a pain in the ass on a stand, it's got too much rocker! :lmao:

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Cold Fusion ebox mount - seems to fit like a glove above the front foothold, but I have not actually mounted it yet.

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B-pipe chamber install is easier than in a Superjet. More room.

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Head pipe and tank stick out a bit above the hull, but the hood fits fine.

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Trying to see if the Watcon hood seal will work.

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