300/440/550 Help me identify my ski

[pillazilla]

bought it off kijiji
not sure if a 550 or 440
HIN : KAW204271687

the lack of fives on that makes me nervous its not a 550

 

[screaming440]

it is a 1987.

look on the motor there should be a tag on the flywheel cover. if it says 538cc it is probably a 550. also that year the stock exhaust will say 550 jet power on the 550.

 

[davy87nj]

http://boatsafe.com/nauticalknowhow/hin.htm I dont think thats going to solve anything to see if its a 440 or 550. Im not sure if a HIN will tell you engine size, like a vehicles vin.

 

[motoman96]

Pics would be helpful. Just cause it's an 87 means nothing, it could have a 300, 440, 550, 650, 750 or even 800 in it. It's 25 years old, the HIN tells us nothing other then the year.

 

[98gti]

Pics would be helpful. Just cause it's an 87 means nothing, it could have a 300, 440, 550, 650, 750 or even 800 in it. It's 25 years old, the HIN tells us nothing other then the year.​

 

[pillazilla]

here are some pics

 

[snowxr]

87 550 had red topdeck and white bottom. 87 440 was all white. 87 650 was white with either red or blue handlepole. 87 300 was white and has one cylinder. Hope this helps.

 

[_evan]

550

 

[pillazilla]

now when i bought the ski, the starter cap was missing and the previous owner found a new cap, so I dont know if it is a reliable way to find out or not

 

[snowxr]

That's not an 87 550 motor.

 

[pillazilla]

uh oh, that makes this even more of a mystery, hull is red with white bottom.

 

[pillazilla]

uhmm this makes things more interesting when I attempt to do mods, buying wrong parts or anything, i guess my new question is what motor is in this ski

 

[pillazilla]

let me know what i need to do to find out

 

[pillazilla]

he also said motor had been rebuilt

 

[davy87nj]

there should be some cc numbers on the cylinders I believe to tell exactly what it is. But that doesnt look like any of my js550 engines. Mostly due to the exhaust. Maybe a newer sx engine?

 

[pillazilla]

I will pop that off on the weekend davy thanks

 

[screaming440]

that motor has the 440 exhaust on it and a 38mm carb (the 87 550 had a 44mm).

its possable the stuff got changed but it is most likely a 440.

take a pic of the prop and i can tell you for sure.

 

[550/440]

The only way to tell if it is truly a 550 or a 440 is to pull the head and take a measurement of the bore. The pump could be swapped out, the exhaust is definitely 440 style, and the small carb indicates 440 (in an 87 hull).

 

[_evan]

that motor has the 440 exhaust on it and a 38mm carb (the 87 550 had a 44mm).

its possable the stuff got changed but it is most likely a 440.

take a pic of the prop and i can tell you for sure.

I was about to say the same thing

38 has two a/f screws 44 has 3

Its most likely a 440

 

[pillazilla]

thanks guys for all your help, I guess I will have to remove the head and just measure the bore, I can take a picture of the prop for you guys too.
I really do appreciate your help guys, ugh I just want to be out on the water!