Finished My ski today

[D-Roc]

Well My final parts from Blowsion came today in the mail, My single 48 intake manifold and my blingin finger throttle. So i put on my reeds and installed it all and fired the ski up for the first time, started up like a charm, I am stoked to finally have my superjet running. Used to riding a sxi and built this ski over the winter. Unfortuanatly i didn't have time to bring it to the water to test it out but i was able to hot box the garage a couple times with some KLOTZ 2 stroke smoke. Just want to thank blowsion for all the bling/parts, Steve for not being around enough to notice all of his box-of-stock being emptied, all the guys on ebay/pwctoday that listed parts and smitty for the tank strap which i have to pay for by building a tennis court for him???? lol sorry this is just a bit of an excited rant about my ski starting up, must be the 2 stroke smoke that i haven't smelt since last October. :biggthumpup: :woot: :arms: :arms: :biggrin:

 

[MADMAT]

Pics man!!:bs2:

 

[Freestyleriverrat]

:biggthumpup:

 

[D-Roc]

Well, okay since you asked.:biggrin: This is a 95 hull with carbon kevlar reinforcing, a one season old trued/welded crank, and stock 701 61x cylinder with pistons out of the back of smittywannabe's pickup truck:bigeyes: , 62t cases with a single 48 manifold/ powerbomb carb. b-pipe limited chamber, stock flywheel, MSD enhancer, umi turnplate with bearings, roundnose pole with custom bracket from legdragpete, typical squarenose hood mods, scat 9/17 prop with steering nozzle mod for more throw, bilge pump, hood straps, 24/7 footholds/scupper valve, blowsion finger throttle factory pipe alum waterbox, returfed blowsion chinpad, and best of all Targa mats with a little hydro turf of course in the footholds. I had a budget so all the money went to getting the parts needed for the ski and little in the body work/paint. that will be next winters task. i did defoam and used blue dow insulation + 4lbs foam to fill in the leftover gaps. Hopefully i can get it in the water tommorrow if i get off work on time to see how the carb jetting is and if that prop is going to burn water or not. :Banane01: oh yah lots of racing sticker to make it go fast:bigeyes:

 

[ski4]

awsome, i'm jelous, i am close so perhaps this coming week i will be done, but no one to ride with yet, i am like a week or two or three in front of our crew here
COME ON GUYS GET DONE!!!!!!!!:banghead: :biggrin:

 

[D-Roc]

well i burned a tank through today and the ski runs pretty good, heres a question or two for you guys, does the Riva Power bomb carb need a resricter in the return line? The ski has excellent bottom end snap and the topend seems clean but if i hold throttle at about 1/4 then goto WOT it revsup a little slow then snaps, i haven't adjusted the carb at all yet and left it at the settings it came from. i also check my pipe to see if it would sizzle and it was hot but no sizzle but the water is still really cold here so i don't know if that is going to affect the temp of the pipe much, and i don't know if that would cause a slight hesitation. i thought that those screws just moved the power band around and not make more horsepower. one last thing is i have a ****ty prop, it is not spinning/ burning water and i don't think a 9/17 scat would be over pitched. If anyone has a few pointers shout them out to me cause i don't know sh*t about tuning. overall i like the way the ski ran, just don't know when the motor is dialed in to its full potential.

 

[douglee25]

It sound somewhat lean. Try turning your high screw out. Retest and see how it effects things.

Doug

 

[sflsurfrider]

is that fuel filter a paper cartridge? it almost looks like a checkvalve.

 

[D-Roc]

i will try the carb adjustment, the red fuel filter only has a metal screen in it, your right though it does looka lika check valve.

 

[sflsurfrider]

ive heard that the riva powerbomb 48s are kind of a bitch to tune right as a single.

 

[D-Roc]

oh great, learning to tune on a tricky carb.:banghead: like i said, it felt really good on bottom and top revs out nicely just that 1/2 to 3/4 needs a bit of work. if i am blipping the throttle and have the revs up a little higher and then WOT it, the ski responds instaltly so it can't be to far off....hopefully. thanks guys for the replies i'll try it out tommorrow afternoon.

 

[D-Roc]

well i've tried to adjust the carb screws in and out a bit but can't seem to clean up my bogging, it is still clean off the idle but then takes a bit to clear out and snap up to 1/2 throttle and on. everything above 1/2 seems good. the plugs look black and there is now sign of piston port wash on the pistons so it must be rich, b-limited pipe ada head 62t cases with stock cages and boysen reeds msd enhancer alum waterbox.
riva single 48 powerbomb
Main Jet: 135
Pilot:150
N & S: 2.5
Spring: 115g
pop off = 20-22
Any ideas guys, Thanks in advance

 

[Superjet3]

DID you get that handle pole off ebay? Looks like my old one. :biggrin:

 

[sflsurfrider]

im assuming your running a k&n type filter on that riva carb and not a stock arrestor.

im not sure where your popoff should be because i only use stock arrestors, but id try bringing that pilot down to a 125.

 

[D-Roc]

DID you get that handle pole off ebay? Looks like my old one. :biggrin:

yellow NJ pole of ebay thats the one. :biggrin:

Okay i was thinking that the pilot was fat, and yes k@n style flame arrestor. i guess i need to buy some jets, thanks.

 

[D-Roc]

okay i put a 130 in it today, and sounded cleaner on the trailer when i started it. i'll try it out in the water tommorrow. just going to work down to the 125 and i figure 150 to a 130 is already a big jump for such a little bog, 150 is the biggest for the pilot right? i figure they send the carbs out jetted rich.