Super Jet 91 sn 701 motor and pump mods

[AZRIDER]

I have a 1990 superjet squarenose with a 701 61x 62e.
has blowsion handlepole spring (stock handle pole length)
limiting rope and hood straps larger bow eyes worx intake grate
It still has the ride plate i got it with(Dont think its stock says "mariner" but i have noidea
0 degree bars

I got a new "B" pipe, a billet airbox, new head w/ 82 mm 37 cc domes
This morning i began by cleaning out the hull

I then pulled apart the exhaust and motor; Inside of motor was really dirty which made me decide to pull apart the jugs to take a better look

 

[AZRIDER]

I found that the piston rings seems to have expanded


oh yah also installing 9/15 skat
any body have any suggestions about what a should do about the rings? new oem? just put new sleeves and pistons? (bigbore)?
all feed back appreciated.
I plan on repaint/reinforce/foothold at some time in april, but inno rush (i hate sanding)

 

[eeerieski]

Those rings are normal, the push out against the cylinder walls like a spring to seal in the combustion gasses. Your cylinders look fine, the dirty part could be a result of your fuel mix being off or maybe the type of premix you use, I really don't know. A compression test is the best way to check the status of an engine, aside from the bearing condition.

 

[AZRIDER]

yah i been looking at pictures and they seem pretty normal apparently. CLR and engine degreaser any thing else I should use?

 

[AZRIDER]

here are the pictures of the reassembled motor and the exhaust set up i decided to use for my rn waterbox. Putting in the motor right now exhaust in the morning.

--I dont need that temperature gauge any more right? cut it off and heat shrink the end?

 

[AZRIDER]

my sn didnt have a pisser stock the second barb in the top of the head should be installed and run to a pisser? decrease back pressure?

 

[piratelife]

yeah run another pisser but make sure u put a 4 mm restricter in it and use a jet works flow control valve going the stinger..............looks good bro!

 

[Boris]

Make sure you pressure test that motor. Wouldn't want an airleak to ruin a top end.

 

[AZRIDER]

Yah i just picked up 61x 62e in super pristine condition. I think im gonna water test the sn as is before doing ne thing else plus what the worst that could happen? have to put nicer parts in my engine? hehe plus removing the b pipe to pressure test would be a bitch at this point

 

[AZRIDER]

the motor is done and reassembled still waiting on the prop


exhaust elbow is no longer kinked.....

 

[AZRIDER]

I just finished tearing my ski back down to the hull; I wanna do some glass work to it and put in the prop; I am a little concerned now is the stage where I should Being putting footholds in, but I've never used a pair; not sure if it would even suit my riding style. I hear alot about diggers and Pancakepete's footholds. anybody got any suggetions? I might just hold off for now on returfing. my turf is still good enough and my foam isnt wet (at least i dont think it is skis still pretty light and arizona has some advantages)

I also got a water restrictor Ill put on when everythig is reassmbled. should i put in an aluminum pump shoe ( I have one already?) the stock one is still fine

 

[AZRIDER]

Ok since this is a sn 1990 that came with a 650 it has the cooling line on one side of the pump and a much larger hole on the other side for stock bilge; i wanna put in dual cooling do I need to weld and tap the larger whole or will that larer hole size fee my second cooling line no problem

and I pulled the pump and found i had a solas 14-19 do i need a solas tool to pull this?
a skat track tool wont work correct (putting on skat 9-15

 

[AZRIDER]

I dont know how i missed this

I dont know how i missed this yesterday

3 veins in my pump are seriously damaged.... so sad



hmmm more complications

 

[AZRIDER]

ok decsion made cut it---- due to the fact my problems keep gtting deeper its time to CUT the hull -2.5 unless i should cut more/less but from what i've read 2.5" is the best will be cutting my tray out in 5 minutes....... wish me luck

 

[AZRIDER]

ok decided to finish taking everything else apart first- arm boweyes- dash- turf

ANy body seen my channel locks?

I am also gonna cut down and crabon fiber my pole some people like to cut out the back so u can glass from the inside, others say straight cut then just carbon from the outside any reccomendations.

 

[AZRIDER]

are removed stock liner; its intact stoked about that
removed turf

 

[AZRIDER]

Removed turf found crack in tray; suspected it was their-- could see small crack between side and tray turf

Cut out tray began with air-powered cut off wheel, but was taking too long and moved to battery powered 4' cut off wheel with masonry blade (wore out blade but was fast, only one or 2 time did it chip out an extra chunk)

got inside foam was definitely wet in fact their is a puddle in there!
next step handlepole, then back of hull

 

[AZRIDER]

okay should that be the amount i cut out of the handle pole I'm pretty tall and I don't thing I need to pull a lot out

foam coming out real nice scrapper and grinder working great

 

[AZRIDER]

cut down handle pole
glass and carbon arrives Wednesday

cutting hull next ~

 

[orangefinger]

Save yourself the work with the handlepole...dump the oem and invest in a cheap AC pole....

if you are planning to eliminate the plastic nose piece let me know im looking for one