This is why every single supercharged ski needs a catch can! 300 guys have a look!

[Green Hulk]

An international customer of mine just sent me this video of his brand new 300 HP ski.
All that oily mess is coming from the intercooler. This is just normal amounts of oil and condensation that enter the air intake, supercharger and intercooler from the engines crankcase ventilation system.

While this system is great for emissions, it's terrible for performance. Engines re burning crankcase fumes lowers knock rating of your fuel, not to mention the oil coats the intercooler making it less efficient.

https://youtu.be/sac_ye977ZA

Catch cans guys! They are VERY important to have on your supercharged skis!!!

RIVA Sea-Doo 4-TEC Catch Can/Engine Breather Kit Easy to install catch can/oil breather eliminates power-robbing crankcase fumes and oil vapor from your engine's air intake. Increases horsepower by...

RS19050-BCC-2

$149.95

[badjoka]

Ugly!

[Phishphan1995]

Glad i bought one..

[JP1017]

How often do you guys empty your catch can?

[rx4pain]

Sold!

[quiddo15]

I have never had to empty my catch can as I only get the smallest amount of blow by

[JP1017]

I have never had to empty my catch can as I only get the smallest amount of blow by

OK just checking. I've had mine for about 15 hrs now and barely see any in there.

[GGG]

An international customer of mine just sent me this video of his brand new 300 HP ski.
All that oily mess is coming from the intercooler. This is just normal amounts of oil and condensation that enter the air intake, supercharger and intercooler from the engines crankcase ventilation system.

While this system is great for emissions, it's terrible for performance. Engines re burning crankcase fumes lowers knock rating of your fuel, not to mention the oil coats the intercooler making it less efficient.

https://youtu.be/sac_ye977ZA

Catch cans guys! They are VERY important to have on your supercharged skis!!!

RIVA Catch Can Kit for All 4-Tec Engines Easy to install catch can/oil breather eliminates power-robbing crankcase fumes and oil vapor from your engine's air intake. Increases horsepower by...

RS19050-BCC-1

$139.95

The main purpose of crankcase ventilation is not pollution control , but to keep combustion by products that include water from mucking up your oil.
The more blow buy you have , the more important this system to the longevity of your engine .Also at very low rpms, the blow by % is significant which is why cars have pcv valves.At planning speeds the % drops to close to zero so effect on HP is nil. So if you get one , you should monitor it's condition and make sure it does not impare the operation of your crank case ventilation system.

Was there anything true about that statement? Because if there was It must be blending in well with all the BS

[Kosh]

GGG, I think most was just leaving it alone? my thoughts would be more cylinder pressure more blow by, but who knows the extraporlator may come into effect somewhere along the line.

[SLASHER]

I have never had to empty my catch can as I only get the smallest amount of blow by

Need to ride harder

[canadianRxtX]

On the newer 4tecs without a lubrication port on the throttle body, some crankcase vapors are needed to keep the throttle body from seizing up and corroding. This is what I was told on my RXPX when my TB seized and needed warranty replacement. Obviously their isnt enough oil getting to the TB. Id prefer if seadoo left the lube hose on the engine cover to keep the TB working properly. They are huge $$ to replace.

[GGG]

GGG, I think most was just leaving it alone? my thoughts would be more cylinder pressure more blow by, but who knows the extraporlator may come into effect somewhere along the line.

That guy is just spewing nonsense all over the place. There's ups and downs to removing the crankcase vent from the intake hose. I noticed a power increase after cleaning the oil out of my intake system. But then the supercharger and intercooler started corroding

[Mpeavler]

Why not periodically just remove the intake boot to the throttle body and apply a spray on lube to keep it slightly lubed after riding ? ^

[ptscon]

Is the corroding a salt water riding only issue?

No way I'd want to lube the throttle body frequently, with hard intercooler piping I think I'd have to unstrap the cooler to get to it, major pain.

[Mpeavler]

Yes PT ....salt air being sucked in.....it's better to not have a catch can IMO personally .... Fresh water guys...no drama as we don't have that to deal with.

M