makejetskiinggreatagain
Brandon
man, I bet your wife went crazy when she heard the news....
Super Jet Am I Boned? How did this happen.
- Thread starter CBiDrive
- Start date
- Location
- Denver, ColoRADo
I don't have the heart or nerve to tell her.
- Location
- Cruising Around
Where does Pro-Tec come into the story? What part do they play in this? Did you purchase top end kit from them and the instructions (that everyone else gets) that come with pistons were not provided?
- Location
- Denver, ColoRADo
Pro-tec makes the Pro-X pistons at least thats what I thought. I could be wrong I need to check into that. I used the instructions that came in the box with the pistons. Not trying to blame anybody but myself for not knowing. As an aircraft mechanic it does not matter what parts you get or where they came from it is the installing mechanics responsibility to make sure parts are correct and properly installed. That is what I live by so I am the only one to blame. If the wrong instructions were supplied I would just not want this to happen to someone else if it could be avoided. Not trying to bag on them at all or get anything for free from them. My replacement pistons that I am buying will also be Pro-X (just a little bigger).
- Location
- Fort Worth
Did it mention anything about the arrow on top of the cylinder?
- Location
- Victoria BC
I can see how someone could F this up. Its just a generic install instruction for all pistons.
Figure 3 is incorrect for our pistons. Pro-X is assuming you can see the semi circular notch on the ring ends and are smart enough (no disrespect) to align that with the pins in the ring groove.
So I am guessing you installed the rings correctly following the instructions that were provided, but did not think about it.
poopty lesson to learn, hopefully you just do it once.
Figure 3 is incorrect for our pistons. Pro-X is assuming you can see the semi circular notch on the ring ends and are smart enough (no disrespect) to align that with the pins in the ring groove.
So I am guessing you installed the rings correctly following the instructions that were provided, but did not think about it.
poopty lesson to learn, hopefully you just do it once.
Yami-Rider
TigerCraft FV-PRO
- Location
- Texoma
I thought they were owned by Wiseco, maybe they are there own company? I know ART makes the pistons, same Japaneses company that makes Yamaha pistons.
- Location
- Denver, ColoRADo
Thank you. As two stroke motors would not have an oil rail and only compression I put my rings in at 180deg lined up with wrist pin. Like I said, first time dealing with a two stroke and had no idea about the alignment pins. Lesson learned and price paid. Definitely wont happen again.I can see how someone could F this up. Its just a generic install instruction for all pistons.
Figure 3 is incorrect for our pistons. Pro-X is assuming you can see the semi circular notch on the ring ends and are smart enough (no disrespect) to align that with the pins in the ring groove.
So I am guessing you installed the rings correctly following the instructions that were provided, but did not think about it.
poopty lesson to learn, hopefully you just do it once.
View attachment 254757
Everybody on here has been awesome. I actually learned more about my motor in the last 24hrs than I have since I got it. Still not sure how a two stroke actually works besides awesome. Still gotta love the whole twice the power half the weight idea of them though. I have read a ton about them and for some reason just don't grasp the concept. Thats why when getting ready to set mine up I had talked to mechanics and owners at Jetworks, GroupK, XScream, Blowsion, Thrust Innovations and PHP before I spent a penny on anything. They were all great and extremely helpful about which direction to take my motor.
- Location
- Victoria BC
I am curious, did your ring compressor force that alignment pin into the piston and deform it? I am impressed that you were able to fit the piston into the bore.
- Location
- Denver, ColoRADo
Actually it just slipped under it. In the middle of this conversation I got the motor out and torn down. And this is what I got. If it would not have let the ring in the groove at all I might have done more of a double take.
Freakrider
X247
- Location
- Tampa Bay area
- Location
- marion ohio
If you truly on a budget. You could always take some 800 grit sand paper to the scoring of that cylinder. Go side to side not up and down . And reassemble correctly I'd bet it would run just fine. The scoring is going to line up with the piston ring gap anyways probably only going to see a slight drop in compression.
N3vrSat1sfied
Military Member
- Location
- Fort Worth, TX
the pistons look usable with a new set of rings.
- Location
- wisconsin
Chris we will be able to get that cylinder turned around right away for you. I will measure how deep the rings cut into the bore and we will go from there as far as the size we need to go. If the grooving is deep there's no doubt it will have to be bored to get the rings to seal. We will make sure to run you on the least painful boning discount we can come up with bud! I feel bad for the painful lesson...bet you don't do that twice!
- Location
- Denver, ColoRADo
Just overnighted the cylinders to ya. Grooves are deep enough to hook with a fingernail. Lets just do what we gotta do. If I end up needing bigger domes no prob. Thanks for the help. Pistons are perfect. If anybody is looking for a set of 83mm with no rings give me a shout
PHP you guys rock
PHP you guys rock
Last edited:
Quinc
Buy a Superjet
- Location
- California
Sounds like a good time to re-sleve and go up to 771cc. =)
- Location
- Denver, ColoRADo
So I did call ProX this morn in the Netherlands about instructions that are included with their pistons. Got a bunch of sorry's which means they have probably already forgotten about my call. They are sister companies with Weisco. Might try them next
- Location
- Houston/Galveston
I woudnt even try to reuse them. That pin now looks like it would let the ring spin around the piston. It might not, but who wants to take a chance.
N3vrSat1sfied
Military Member
- Location
- Fort Worth, TX
that is true and I wasn't recommending he did reuse them, just adding on 102nd7 post about budget rebuild. But either way he is probably gonna have to bore and get new pistons anyway.