300/440/550 Best Pipe for a Js550

Summetyme1

Summetyme1

Location
Colorado
Get a closed course port, factory half pipe. 15.5 skat, dual 38s, milled head, and a water box. Tack a quick steer and an ocean pro nozzle. Call it a day. :)


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Oldstandupguy

Location
Fl
Half Pipes work great for your set up... The drier the better. Best Bang for your buck is the Stock Breadbox with the dry out mod. On the front inside of the box is a fitting. Remove fitting and put on an brass outlet - run to a pisser. Ski will ride a lot crisper...
 
swaggggg

swaggggg

Location
Lone Star state
Oldstandupguy said:
Half Pipes work great for your set up... The drier the better. Best Bang for your buck is the Stock Breadbox with the dry out mod. On the front inside of the box is a fitting. Remove fitting and put on an brass outlet - run to a pisser. Ski will ride a lot crisper...
Click to expand...
Do you have a picture or something of the dry mod?
 
Js550FTW

Js550FTW

Location
Anchor Bay, MI
Anyone have any input on a full pjs exhaust system for the pp engine? I also want to go high compression with a/m waterbox and bored nozzle

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Js550FTW

Js550FTW

Location
Anchor Bay, MI
Anybody have anything to say about the pjs full pipe with the old 550 mani that will accept the full pipe. I have a deal on one and want to know if it's worth it. Also, I am porting everything so there's that. Any gains? Also, hc head, 17 pitch impeller, bored nozzle, and a waterbox. What numbers can I expect?

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Summetyme1

Summetyme1

Location
Colorado
If you're going to port and put a high compression head you have a good chance to tear that stock crank up. Find a good 440 crank they're much stronger. When you ask what kind of number should you expect.. Compression? HP? Top speed?


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Js550FTW

Js550FTW

Location
Anchor Bay, MI
All 3 numbers. And I want to know as well with the 17 pitch if it will suck coming put of the hole. Thanks!
Summetyme1 said:
If you're going to port and put a high compression head you have a good chance to tear that stock crank up. Find a good 440 crank they're much stronger. When you ask what kind of number should you expect.. Compression? HP? Top speed?


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Click to expand...


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Summetyme1

Summetyme1

Location
Colorado
Depends on altitude and many other things. Compression is dependent on your domes on your head. You can read them off and we can see what cc domes they are. HP and top speed will also be dependent on your impeller and what kind of port you have done. Just gps it when you get it running.


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Js550FTW

Js550FTW

Location
Anchor Bay, MI
Summetyme1 said:
Depends on altitude and many other things. Compression is dependent on your domes on your head. You can read them off and we can see what cc domes they are. HP and top speed will also be dependent on your impeller and what kind of port you have done. Just gps it when you get it running.


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Click to expand...
Sweet thanks! Is a pjs 17 pitch impeller a little too much? I don't know a lot about the pumps and how they work on this thing

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Js550FTW

Js550FTW

Location
Anchor Bay, MI
Also, the next time I ride this thing is like 5 months. Haha I can't wait that long to find out what this beast is pullin! Anybody have a ballpark figure to throw out?

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Js550FTW

Js550FTW

Location
Anchor Bay, MI
Nope. The ol' 5 fiddy pump. I got a killer deal on a 16 pitch (thanks, missionbayskier) and the bittom end is meh, but i absolutley love the top end

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tntsuperjet

tntsuperjet

Tntperformance-engineering.com
Location
Georgetown ca
I run a 17 in mIne and it rips.
PP duel 38's. Alum 440 Cyl bored and sleeved with bridged intake ports. PJ's Reed pipe.
196 exh 128 trans, 200 comp lighten flywheel, advanced timing. Boat goes 51mph.

I also have a 440 super stock. Bridged intake, 200 deg exh, 127 trans, total loss titanium flywheel, Ti drive shaft, green 40mm BN carb. Stock intake with flow crown inside,PJ's Reed pipe. extrude home pump 15.5 prop runs 49.7mph.
 
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