50:1 premix Amsoil Interceptor gone wrong??

[nervio954]

Is it possible to ruin a engine "951" doing premix with Amsoil Interceptor at 50:1?? Some say 40:1, some say 50:1 but Amsoil is a great oil... my engine did bent a connecting rod and shattered the cylinder but the sleeves are intact!! Can someone explain al least something here, right now I am in the dumbness!!

 

[LouDoo]

Hi,

It doesn't matter so much the brand of the oil as long as it's API-TC rated, also in your ski you should be using full synthetic. That being said the oil ratio is 40:1.

I can't say if your engine damage was caused by lack of lubrication, but if you are running your ski full throttle (which requires maximum lubrication) the 50:1 mix would certainly contribute to the engine failure.

Lou

 

[Dr Honda]

If your cyl walls and piston skirts show no damage, and your crank bearings don't look over heated... then the oil wasn't the problem. (But I would still run 40:1)

A bent rod could happen because the rod was bad... the thrust bearings wen't set right... or you got a mouth full of water, and hydro-locked at speed.

 

[1995hx]

i don't know about the 951's but my 787 hx runs great on 50:1 the stock oil pump at wot only runs 50:1 so why would it be different by premixing it. btw i have about 31hrs on a new motor. and only 1 tank was at 36:1 for break in.

 

[Dr Honda]

The stock oil pump was supplying 40:1 at full throttle, on your 720. (that is seadoo's target) at idle, it was closer to 75:1.

Got any pics of your engien swap? I'd like to see how you stuffed an 800 into the HX hull. If you do... please start a new thread. I'm sure there are a bunch of guys here who would like a conversion thread.