wisco 1.00mm/pro x 1.50mm giving it a try

[_sweet_gazza_21]

i went to the shop over here in australia ask the guy about the different piston size and brands he said my ski will run as long as both cylinders are over size he said it doesnt matter if both pistons are different sizes to each other just as long as i dont try and run a standard bore and one over size because it wont run so i have in my ski now one wisco piston 1.00mm and i have a pro x 1.50mm the pro x looks alot heavy than the wisco do u all think it will be ok? i havent started it yet still trying to get two bolts in the **** head to much salt in the thred

[Bryan Glynn]

Well I hope he gave you a shovel for all that BS he handed you.

[Bill O'Neal]

He probably meant that you could run a 1.50 Wiseco, and a 1.0 Wiseco without much adverse effect. But not a Pro x and a Wiseco. Too much weight difference.
The "right" way would be to use the same size and brand piston in both holes.

[_sweet_gazza_21]

when i went in to order the parts i said to the guy i need a wisco pison and ring kit 1.00mm over size then he goes alright then rings me up later and goes we cant get wisco but he goes we can get pro x i said i have heard from sbt it wont work he goes hold on goes and ask someother person then comes back and goes it wont make a difference then he goes we can only get 1.5's and i asked him again will it matter with the different brands and sizes and he goes no it wont make a difference then he was going rah rah rah raving on i think he knows u because he has all pictures of sbt and stuff up in hes store its FMR racing @ castle hill in sydney so i havent started the ski yet i have a flat battery wont be able to start it untill tomorrow arvo should i try to start it? if it does run will it vibrate alot and can i take it top speed?

[Bryan Glynn]

Exactly - a load a crap. He BSed you into buying whatever he happen to have to sell. I would not run it - it won't last long with two pistons of such different weights.

[_sweet_gazza_21]

it seems to run ok it vibrates just as much as before i havent taking it to the water yet only let it run on the tralior for 10 minutes and give it a few revs

[Michael73]

Hey Bill and Bryan, do you understand now, when I was saying we have CRAP jetski service and advice in Australia.

What the HELL was this guy at the shop thinking???? I mean COME ON!! What is going on here.

I could let it pass if both pistons were the exact same weight, but gezzzz..

Surely thats gotta put a lota strain on the crank.

How much would it cost for the extra piston and rebore?? What a new crank gunna cost??

What ever, I give up.

[_sweet_gazza_21]

i have spent about $8000 on this ski already maybe more and i wanted the same size and weight piston but they slyed me and its ganna cost about $250 for a bore and hone and piston kit might just have to buy that

[Nick k]

If this guy actually belives it enough to tell customers that, then I too want to open a shop and make money, note the bit on the end of the shops name "RACING"
Weight ,compression,1 forged 1 cast, clearance,tempreture will all be different
then again give it a go