Evac or puke tank
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Evac or puke tank

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    Senior Member larryfknrocks's Avatar
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    Default Evac or puke tank

    What's up fellas? I took the boat out the other day to Elsinore and it ran great, I only had one problem. While I was running it seeing how it handled and ran, I looked back at the motor and the transom area looked like a crime scene. I had some oil coming out of the breathers, splattered everywhere. My question is, should I run header evacs or a puke tank? It's a mild 454 so nothing too crazy

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    Quote Originally Posted by larryfknrocks View Post
    What's up fellas? I took the boat out the other day to Elsinore and it ran great, I only had one problem. While I was running it seeing how it handled and ran, I looked back at the motor and the transom area looked like a crime scene. I had some oil coming out of the breathers, splattered everywhere. My question is, should I run header evacs or a puke tank? It's a mild 454 so nothing too crazy
    i "personally" would run a puke tank...evacs are fine,but, your putting a mist of oil along with the water mist from the headers into the water! ...just run fittings & hose off the back of your vc's & do away with the breathers ...put a breather on the tank...use 5/8" or 3/4" hose...if your not hung up on the bling...you can make a tank out of 4" pvc pipe! & fittings...easy peezy ...also...next time you have the motor out, you might consider a windage tray on the bottom side of the crank ...just sayin' my .02 cents

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    gn7
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    Quote Originally Posted by FastRat View Post
    i "personally" would run a puke tank...evacs are fine,but, your putting a mist of oil along with the water mist from the headers into the water!
    So you perfer to have the engine(pistons) build enough pressure to over come atmospheric pressure and push it out as opposed to creating a lower pressure area and have it exit at a much lower pressure. Its that what you saying. Pan pressure = Good, Pan vacuum = BAD.



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    Senior Member ol guy's Avatar
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    Quote Originally Posted by gn7 View Post
    So you perfer to have the engine(pistons) build enough pressure to over come atmospheric pressure and push it out as opposed to creating a lower pressure area and have it exit at a much lower pressure. Its that what you saying. Pan pressure = Good, Pan vacuum = BAD.
    Good response GN-7

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    It's what we do BDMarine's Avatar
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    Quote Originally Posted by gn7 View Post
    So you perfer to have the engine(pistons) build enough pressure to over come atmospheric pressure and push it out as opposed to creating a lower pressure area and have it exit at a much lower pressure. Its that what you saying. Pan pressure = Good, Pan vacuum = BAD.
    I think he was only trying to be environmentally good. I agree that you shouldn't spray oil into the water. HOWEVER, why is a mild 454 blowing enough oil out of the breathers to cover the transom??? Either the breather is directly over the push rod, or the rings aren't sealed, or both. I would leak it down first.
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    Quote Originally Posted by BDMarine View Post
    I think he was only trying to be environmentally good. I agree that you shouldn't spray oil into the water. HOWEVER, why is a mild 454 blowing enough oil out of the breathers to cover the transom??? Either the breather is directly over the push rod, or the rings aren't sealed, or both. I would leak it down first.
    it wasn't a huge mess but it was just a little drip every once in a while being blown to the back of the boat. but from what im hearing i may just go with the header evac's.

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    gn7
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    Quote Originally Posted by BDMarine View Post
    I think he was only trying to be environmentally good. I agree that you shouldn't spray oil into the water. HOWEVER, why is a mild 454 blowing enough oil out of the breathers to cover the transom??? Either the breather is directly over the push rod, or the rings aren't sealed, or both. I would leak it down first.
    A environmentally correct boater. Well thats the problem. I can't relate

    I agree, there is a reason OIL is exiting the breather. Either terrible baffeling and or breather location in the valve cover, or severe blowby. But like BD posted, it needs to be addressed, not covered with a band-aid or a puke take.



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    try a new, different, or better breather. A mild 454 should not have filled the breathers enough to cause them to drip.

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    My old style M/T valve covers has the breather right over the rocker > shooting oil right into the twist-on breather.
    Stud Girdle eliminated any oil out the breather...just my two cents.
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    gn7
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    Quote Originally Posted by HammerDown View Post
    My old style M/T valve covers has the breather right over the rocker > shooting oil right into the twist-on breather.
    Stud Girdle eliminated any oil out the breather...just my two cents.
    I like your style HammerDown. A 250.00 baffle. I love it. You're my kind of thinker



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    i know the driver side breather sits right above a rocker.. hopefully that is why i was getting oil coming out. i'll check the other side when i wash it tomorrow. thanks for that!

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    Quote Originally Posted by gn7 View Post
    I like your style HammerDown. A 250.00 baffle. I love it. You're my kind of thinker
    Easy now...it works!
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

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    Quote Originally Posted by 71hallett View Post
    Easy now...it works!
    Whats ju talk'n bout Willis? I was applauding the idea. It shows ingenuity.

    "Lets see, what can I use to block the oil from shooting up inside the valve cover breather? I know!!!! A big thick heavy ass hunk of aluminum that ties the rockers studs together."

    Not counting the fact that the rockers and springs love it because the oil now drips off the girdle and onto the rocker trunnion instead of shooting over the top of them.

    Are you kidding me, its freek'n brillant!



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    Last edited by gn7; 06-26-2012 at 07:42 PM.

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    Quote Originally Posted by FastRat View Post
    i "personally" would run a puke tank...evacs are fine,but, your putting a mist of oil along with the water mist from the headers into the water! ...just run fittings & hose off the back of your vc's & do away with the breathers ...put a breather on the tank...use 5/8" or 3/4" hose...if your not hung up on the bling...you can make a tank out of 4" pvc pipe! & fittings...easy peezy ...also...next time you have the motor out, you might consider a windage tray on the bottom side of the crank ...just sayin' my .02 cents
    I wouldn't give 1 cent for that opinion. evacs make hp puke tanks don't. and they work a whole lot better. this is a no brainer.

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