oil cooler

not on a cat a cracked sleeve (liner) wont put oil in the water.cummins i wouldnt know i dont mess with cummins.

 

Not trying to be rude! You have three guys here saying to flush it some more with detergent to get the oil out to help you save some money and more down time. It seems you have it in your head this thing has to come apart again no matter what you are told. If it makes you feel better, then go for it. If you come here for advice, but don't plan to take it I guess that's up to you. Good luck!

 

Pardon my ignorance. Can you explain to me why it would be differant in a Cat than a Cummins. The principal of operation is stil the same i.e a wetliner. Please understand I don't want to pick an argument, I would just like to understand you're reasoning behind this issue. I'm a big CAT fan myself I opperated a few 3406A's and a 3406 PEEC at one time in my life. Just curios. |Looking forward to you're response.

 

ok where on a liner is an oil supply? there isnt. like you said a wet liner as in antifreeze wet. the only oil supply is what supplied to the rings as in oil bath. there is not enough pressure at the rings to force oil through a liner when you have pressure on the wet side of liner. if you have oil pressure as high as what your engine is making at the rings then you have a whole lot of other problems. when a liner cracks or gets pitted from electroalises its from air bubbles in the water poping against the liner eatting away the metal until it creates a hole letting water in. or cracks to let water in not oil out. cummins is the same way i assume but like i said its been years since i have worked on a cummins so im not sure if they are different from the old n-14's.

 

There is no oil supply in a liner besides the lubricant in the liner. Like I said I dont want to start a pissing contest. I know where you are coming from with the pitting analargy, My point is the pressure inside the liner is still higher than the coolant pressure. There is still some seepage from the liner to the coolling system while the motor is running. Should the motor be stationary for a while some coolant would be seeping into the combustion chamber causing a hydraulic lock.
The condition of the rings would determine the amount of coolant in the lubricant. I gave you an example of a Cummins(Don't shoot me I love a CAT). It produced a milky substance in the coolant, which
I traced backed to a pitted liner, after I cleared the problem the motor ran a thousand miles with no oil consumption. CAT Cummins Detroit same principal.

 

ok i see what your getting at. the only pressure you have is when the piston is compressing on to fire. for what he is stating about oil in the water cant be a result of what your getting at. and when it compresses to fire it is near the top of the stroke. the milky substance your talking about usally is in the oil from antifreeze mixing with the oil in the pan then pumped through the engine. i have never seen it being milky on the water side before.(not saying it cant happen just never seen it before)unless you are puking alot of water and oil out the top. then like i said you have a bigger problem than a liner. some one else can explain it better than i'm doing. there just isnt enough pressure to force that much oil through a liner in to the water side.if there was there would be a whole heck of alot of blowby all the time. i not upset at all just saying what i know. of course i've been told that i've been wrong before, just ask my wife! sorry for the hijack on this thread.

 

Thanks for the opollogy on the hijack thread , on my behalf. I apollogize if I came accross rude, not my intention. I was only speaking out of personal experiance. I will never give advice if I don't know what I'm talking about. Sorry if I came accross rude, not my intention.

 

no need to apologize thats what this sites all about. like i said heck i've been wrong before. just ask my wife! it's good to talk back and forth thats the only way we learn anything!

 

I am curious as to the outcome of the oil cooler.Did it need flushed or was the (new cooler) bad? I think I may see a trend starting .