Crank Lubrication

[heathg]

Hi Members
Thanx for your Time
Q. I have a 1997 seadoo XP and I'm Curious if the crank has a oil pump to move the oil from the 2 stoke reservoir for lubrication (please don't confuse this Question with the Oil Injection Pump I know were that is) or is it just an oil bath set up. As when the motor is running i expected to see the oil returning at the top of the reservoir but it just seems to sit level with the oil in the 2 stroke Reservoir is this Normal ???
Thanx for any Info there is nothing in the workshop manual about this area it only shows were the lines connect

 

[mikidymac]

No, there is no pump or circulation.
It is just a simple gravity fed oil bath.

 

[heathg]

Thank's for the Answer Mick much appreciated it is exactly as i thought but i thought i'd better make Sure before I did a bottom end
Heath

 

[heathg]

Hi Mick
Next question Can you tell me what size the Calibrated water outlet fittings are as there isn't a mention of size in the workshop Manual, One goes from the head out through the Flushing Inlet and the other just goes out through the transom near the jet pump but i cant find any reduced fittings in the lines. Water just flows out freely which then leaves the tell tale water outlet (that you look at to make sure there is water flow) at no flow at idle and a sad flow when reving it up. I've asked at the local SeaDoo dealer here in my town in Australia and because it is so old they tell me they cant even get parts for them anymore wich is what they are gonna tell you coz they would rather sell you a new ski. If I can get a hole size Ill make my own Reducers.

 

[Ckrawiec]

Hi Mick
Next question Can you tell me what size the Calibrated water outlet fittings are as there isn't a mention of size in the workshop Manual, One goes from the head out through the Flushing Inlet and the other just goes out through the transom near the jet pump but i cant find any reduced fittings in the lines. Water just flows out freely which then leaves the tell tale water outlet (that you look at to make sure there is water flow) at no flow at idle and a sad flow when reving it up. I've asked at the local SeaDoo dealer here in my town in Australia and because it is so old they tell me they cant even get parts for them anymore wich is what they are gonna tell you coz they would rather sell you a new ski. If I can get a hole size Ill make my own Reducers.

I'm not 100% sure this is the answer to your question, but the calibrated fittings are the actual elbows in the cooling system. In the '97 manual / Cooling System /page 04-02-6 gives the respective elbow sizes...with their respective inlet and outlet sizes.

 

[heathg]

I'm not 100% sure this is the answer to your question, but the calibrated fittings are the actual elbows in the cooling system. In the '97 manual / Cooling System /page 04-02-6 gives the respective elbow sizes...with their respective inlet and outlet sizes.

Hi I Have the same chart which isn't very useful at all I can only find 2 elbows in the system that have numbers stamped into them. That is one going from the exhaust to the muffler that is a number 48 and the one that goes from the top of the power pipe to your tell tail and that is marked with an 18 which isn't even listed in the 3 on that page, the lower 2 elbows that come out of the bottom end and out through the transom have nothing stamped on them so i gather they are just elbows, the head outlet that goes out through the flushing port has nothing. I might buy some Joiners and solder the ends up and drill some different sized metric holes the same size as the 3 in the chart and try them in the lines keeping an ear on my overheating alarm

 

[mikidymac]

You should not be modifying the cooling system at all. What are you trying to accomplish?

 

[AKnarrowback]

Your overheat alarm will do nothing to save your motor from a lean condition that will burn a cylinder. The combustion chamber heat from a mixture error and water jacket heat from a lack of cooling water are two entirely different heat situations, only one is monitored and you will be messing with the one that isn't monitored. Even a good set of EGTs will not prevent a seizure unless you watch the gauge all the time or have an alarm set point that alerts you, even then catching a lean condition is very iffy.

The amount of water injected into the exhaust is calibrated to match all other aspects of your motor/exhaust. You are not going to gain anything by altering the stock calibrated fittings. If you alter the tuned pipe characteristics you can cause a lean condition and burn the motor.

 

[heathg]

You should not be modifying the cooling system at all. What are you trying to accomplish?

Hi Mick
That is why im asking these questions in the workshop manual on the 787 motor in the 1997 XP the Cooling System map !. The water outlet from the top of the head PTO end to the transom (also the flushing/dry run inlet) through a 13mm line and the outlet from the bottom of the block tee'd together then also out through the transom on the other side through a 8mm line said they are both going out through Calibrated Outlet Fittings to Limit Water flow. I have looked at both of these outlets and there is NO restriction Just straight through and running a motor stone cold isn't good for things either that's why motors have a Recommended operating temperature. The reason i chased this up was when i put it in the river and started it the Cooling System Indicator (CSI) that you look at while blasting around had nothing coming out at an Idle it was only when up in revs a small stream came out and I'm used to outboards that have a good strong squirt coming out the CSI squirter even at an Idle it made me wonder if the previous owner has removed anything but the workshop manual gives nothing up in quite a few areas (It is very Vague) if you know what i mean.

 

[mikidymac]

Ok. On the 1997 XP The “calibrated “ fitting at the back is actually where the garden hose connection is back at the pump. If you look into it with a flashlight you will see that it is restricted down to a smaller size than the hose.

 

[heathg]

Ok. On the 1997 XP The “calibrated “ fitting at the back is actually where the garden hose connection is back at the pump. If you look into it with a flashlight you will see that it is restricted down to a smaller size than the hose.

OK
thanx for that ill leave it the way it is then Thanx Mick