anyone out there every get water in oil from exhaust sucking back??
#21
Registered
Join Date: Dec 2014
Location: NYC
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
Just start taking it apart from the easiest. Cooler is like 2 bolts, if it's good move on to the next. Eventually you'll be down to the heads if u haven't found it by then. The best part is that if it's a piston or rings you'd have disassembled the whole engine in the boat when you could've just pulled it and done all that a little more comfortably.
Nothing beats pulling manifolds and heads cramped up in a tight engine compartment. Especially those big stock merc ones.
Nothing beats pulling manifolds and heads cramped up in a tight engine compartment. Especially those big stock merc ones.
#23
Registered
Sickrick -
You sure you are not having a condensation issue inside motor ?
Are you possibly getting backwash up the tailpipes of this motor ? IE: Flaps not working correctly or etc ?
Think doubly hard on any tiny thing that may be different between the two motors - tail height/rate of fall/flapper/ rigging, timing, how it runs , if the boat leans on trailer or on water, etc,etc,etc.
More reversion the lower the rpm is. Shutting off engine will revert more. Just like extended cranking does.Not running, water can get past rings. Right ?
You sure you are not having a condensation issue inside motor ?
Are you possibly getting backwash up the tailpipes of this motor ? IE: Flaps not working correctly or etc ?
Think doubly hard on any tiny thing that may be different between the two motors - tail height/rate of fall/flapper/ rigging, timing, how it runs , if the boat leans on trailer or on water, etc,etc,etc.
How is it even possible for water to get into the oil from the exhaust, I understand revision but that usally doesnt cause water in oil.
Op do you have a oil cooler by chance? Could this oil cooler have a crack in it?
If you had enough revision to get water in the oil I think you would have a very rough running motor at idle.
Just my 2 cents
Op do you have a oil cooler by chance? Could this oil cooler have a crack in it?
If you had enough revision to get water in the oil I think you would have a very rough running motor at idle.
Just my 2 cents
#24
Registered
You ever see the oil in a alcohol fueled race motor ? Ahhhhh yuk !
#25
Registered
Join Date: Dec 2014
Location: NYC
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
Long story short: I doubt the water is getting in thru the piston unless the piston or ring is broken.
#27
Platinum Member
Platinum Member
#28
Registered
My buddy Tim (Baddog) came up with my favorite many years ago when I was considering keeping the Alpha on my boat with my new engine build and just trying to baby it. He said, "If you had a twelve inch dong, would you only use six inches of it?"
#29
Platinum Member
Platinum Member
#30
Registered
Thread Starter
Join Date: Sep 2014
Location: Bloomington Illinois
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
ok first off thanks for all the suggestions/help.... I ended up pulling the motor to have it tested, yet thinking the block was cracked... this was after I pulled the heads and intake, had heads planed/ rebuilt, new gaskets every thing.... put it all back together and still leaking.... so I pulled it..
tested oil and trans cooler--- held 75psi no leaks
pressure tested block with heads and intake still on it right after I pulled the motor, just capped the water line from the cooler to the front tee on the block, then on the tee on the intake I plumbed up 2 hoses one on each side, one being capped and the other a cap with a valve stem in it, on the little nipple coming off the tee I even put a guage on that...
held 40psi for 10 mins
so this where I posted on here asking about the exhaust sucking back due to big cams or not.... I have old exhaust hardin p1000s that's my next move is to test those and the tailpipes....
this has def been an experience I don't want to go through again, yet I still haven't found the problem yet
STAY TUNED
I will keep you updated
thanks again RICK
tested oil and trans cooler--- held 75psi no leaks
pressure tested block with heads and intake still on it right after I pulled the motor, just capped the water line from the cooler to the front tee on the block, then on the tee on the intake I plumbed up 2 hoses one on each side, one being capped and the other a cap with a valve stem in it, on the little nipple coming off the tee I even put a guage on that...
held 40psi for 10 mins
so this where I posted on here asking about the exhaust sucking back due to big cams or not.... I have old exhaust hardin p1000s that's my next move is to test those and the tailpipes....
this has def been an experience I don't want to go through again, yet I still haven't found the problem yet
STAY TUNED
I will keep you updated
thanks again RICK