Air Breathers Pumping Oil

man-of-war

Petty Officer 2nd Class
Joined
Apr 23, 2004
Messages
175
Re: Air Breathers Pumping Oil

f_inscreenname Next Time set a better example :) Beautiful Engine!!! ;)
 

man-of-war

Petty Officer 2nd Class
Joined
Apr 23, 2004
Messages
175
Re: Air Breathers Pumping Oil

HI rodbolt, Could u show me what a propper fuel system looks like? OR a web link. i was going to get one of those glass fuel filters,i need to know how to run these fuel lines lines? THANKS
 

olbuddyjack

Petty Officer 1st Class
Joined
Oct 23, 2003
Messages
318
Re: Air Breathers Pumping Oil

The pressure side of your fuel system needs to be metal. Same with the fuel filter.<br />I've heard that the Coast Guard has approved a type of flex hose but I dont know what kind.<br />Just bend some 3/8 brake line and fit it up, I'm sure its cheaper anyway.<br />
THAT'S A COOL ENGINE, IS IT A 454?
No bowties on that one, Real engines don't wear bowties... :D :D :D
 

f_inscreenname

Commander
Joined
Aug 23, 2001
Messages
2,591
Re: Air Breathers Pumping Oil

RodBolt, pull the knife out :D I thought we were bud's?? :D :D <br /> “nope that’s not a normal marine engine, it also wont pass any coast guard safety inspection.”<br />So sorry but the river I hang on has a very large Coast Guard station on it and it has been looked over so many times like loud, red boats tend to be. Most USCG folks just want to ask questions about it but the DNR cops always look at everything. You would think that maybe the first five inspections they may have missed it but 10 more after that???? <br /><br />“I would instantly ticket it for the fuel and vapor set up. not only is the crankcase breather system not in compliance neither” <br /> What is wrong with that? I have a PCV valve to the back of the carburetor. I have pictures of the first motor (from 1972) and it is set up the same way except the PCV hose goes to the back of the carburetor instead of the side of the flame arrester. Always thought that was a “dirty’” set up. Maybe it is the breather cap???? I guess I wouldn’t be alone there. I see them all the time.<br /><br /> “is the fuel line and filter between the pump and the carb”<br /> I bought the filter from U/S Boat and again it has been inspected with it in place. Also it catches so much crap that the big filter misses I wouldn’t care if it wasn’t legal. As for the fuel line, this fight has been going on for ever here and I have even asked (USCG and DNR) about it. They both seem to think there is no violation. They both do recommend that I use steel tube but. .. I use barbed fittings and very good clamps trust me I feel safe. <br /><br />“I actually think some of the K&N filters are rated. on the filter I would have to look for the SAE number to see if it was conformong or not.”<br />It is. That is one thing they will get you quick for around here. <br /><br /> I aint saying I am perfect by a long shot but I am safe. I just wanted to point out that all the extra crap on a marine motor is just a waist of time. It can be simple and functional at the same time. <br /> <br />What is it? it’s a 360ci Chrysler small block. It should be around 330+HP or that is what it dyno’ed at two years ago but I have made some major changes since then.<br />WOT? On a “qualifying run” (me, some gas and no stuff) I have had it up to 67mph but I gave up a couple MPH because I like having a few thing and people along for the ride. So for what I have now (Chrysler 360ci, Holman Moody Volvo 270, 15 ½ X23 prop ) my average WOT at 4900rpms is 61mph. You have to remember my boat is 30+ years old and there is a lot of material (with that comes weight) to push around.
 

Destin

Seaman
Joined
May 11, 2003
Messages
56
Re: Air Breathers Pumping Oil

Download and save the revised (Nov 2003) fuel system regulations.<br /><br /> http://www.uscgboating.org/safety/boatbuilder/downloads/FUELSYSTEM.pdf <br /><br />You no longer have to use metallic fuel line between fuel pump and carburetor, BUT it must be constructed of approved hose and fittings.<br />Check out pages 63 to 73 of the Coast Guard's fuel systems regulations. It tells you the requirements for flexible fuel lines between the fuel pump and carburetor.<br /><br />Other revised regulations:<br /> http://www.uscgboating.org/safety/boatbuilder/downloads.htm <br /><br />If you had an extra 2.5L of oil in the engine I'm pretty sure the engine would have filled up with aerated oil foam and normal blow-by would push it out any opening. Does it still blow out oil?
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Air Breathers Pumping Oil

sorry about the knife:)<br /> in certain parts of the world we tend to have overzelous inspectors and lawyers. your breather techniaclly still has to vent any vapors to the flame arrestor not just to the engine box. PCM uses the same system you have still, only the breather has a hose running to the flame arrestor. most engines dont use a PCV but some still do.<br /> my old boat had rubber as well but I changed it to the type A1 and double clamped it. we also used type A1 on our race cars with double clamps after a friends lit off due to a fuel line that popped off and sprayed the headers down at mid track. thats the day we found the fire suppresion system they made us install actually help.<br /> but I have not had a stern drive in many years now:) :) . butthe filter mounting requirments have not changed. I will have to see on the rubber line requirements.<br /> I have found in my area if you have a flame arrestor,kind of, and a fire extingusier and PFD's they wont look at anything else, a buddy of mine in the NY area used to complain that they would read the rules while inspecting.<br /> and depending on hull/engine box design you dont have to run anyting. thats how the racers get away with it, that and the regs for competition use in competition are a bit different from pleasure craft.<br /> my biggest problem is lawyers, a dealer friend of mine in 99 had to pay off on a boat they did a tune up on and did not catch the non-marine carb that was on it. well it lit up and dang if the dealer did not get stuck. seems the lawyer used the " as a professional you should have known and told the customer of a safty violation" ploy. another dealer I worked for got sued and had to pay for a transom claimed to have been rotted due to using silicone on the bolts. thats why since the early 90's all motors at his dealership are mounted with 5200, in fact anything below the water line got it.<br /> but that is a good looking old mopar ya got. man them 360's can make some good power.<br /> most all of them are long gone here. saltwater got them:(.<br />its nice to see something other than the average SBC in a boat
 

f_inscreenname

Commander
Joined
Aug 23, 2001
Messages
2,591
Re: Air Breathers Pumping Oil

"most all of them are long gone here. saltwater got them:(.<br />its nice to see something other than the average SBC in a boat"<br /> It came with a H/M 318 Chrysler but the salt water got it. The replacement came from a 1985 Dodge 15 passenger van. For that matter there is nothing left of the old motor except for the alt, raw water pump and bell housing.<br />When it comes time to buy things for it I wish it was a Chevy. Mopar costs twice as much and thats if you can find it in the first place.
 

Haut Medoc

Supreme Mariner
Joined
Jun 29, 2004
Messages
10,645
Re: Air Breathers Pumping Oil

My '89 Dodge van (15 passenger) has 200k+ and still runs way strong......And your boat ....Sure is purty.... :D .....JK
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Air Breathers Pumping Oil

I got a buddy with a pair of 440 chyslers marinized by crusader. yep parts, when we can get them, are outragous. we did all the saltwater parts of the risers 5 years ago so its about time to do them again. last time it was almost 700 dollars a side.. takes an act of congress and an alignment of the planets to remove them. luckily the manifolds are freshwater cooled :) . but here in the salt pond with those old log style manifolds and 3 piece elbow assemplys it has to be cut off the mounting studs.<br />so its all junk, studs, elbows all of it. last trip was about 11 hours below decks changing them. nice thing though I can live aboard for a 3 day weekend while doing it :) :)
 

f_inscreenname

Commander
Joined
Aug 23, 2001
Messages
2,591
Re: Air Breathers Pumping Oil

Ya those manifolds suck. I just replaced mine a couple months ago. I had two choices. 1, Osco cast iron logs. 2, A company from Australia, Victorian Marine stainless steel manifolds. You can guess which ones I bought. <br /> $2300.00 later. Just in time for the increases in the gas prices.
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Air Breathers Pumping Oil

getting back to man o war<br /> there are two ways you can introduce gasoline to the base pan oil. only two ways, read,heed and belive. one is a bad diaphram on a block mounted camshaft driven fuel pump with a bad diaphram and two is past the piston rings.<br /> the first is simple the second a tad more complex.<br /> the second can be done by excessive low tempreture running which will caause a rich fuel mix, a leaking needle valve causing cyl floodindg and rapid wear of the rings due to lubrication wash and also on that holley if the power valve diaphram is ruptured it will go pig rich and tend to drain the fuel bowl into the intake at engine shut down. but the power valve was already pointed out. with 8 pistons jumping up and down there are tremendous pulses generated in the crankcase, toss in a normal amount of blowby and you now have a positive pressure inside the crankcase. means there is more pressure inside the block than outside, similar to a ballon. a leakdown test can indicate leaking intake or exhaust valves, neither will put fuel in your oil but may cause other running issues. it will also detect excessive wear or non sealing piston rings. the easiest way to test is to tape off all valve cover openings but one. place a dollar bill on the last one that is open. apply air to the leakdown tester and see if it will raise the dollar bill. if it will and leakage is more than 10% you have found a bad sealing ring set, repeat for the next 7 cylinders. air hissing back through the intake indicates bad sealing intake valve. there again taping the intake off except for a dime sized hole will assist and leakage is greater than 10%. same as the exhaust. it will hiss as it escapes. leaking head gaskets into the cooling system can be found the same way. in a perfect cyl there will be 0% leakage. what does leak must go someplace. find the place and if leakage is more than 10% you found the problem.<br /> couple any blowby with the fact you have non-baffled holes in your rocker covers and oil flies.<br /> had a buddy some years back bought a mickey thompson engine dress up kit with cast valve covers. seems he forgot about the instructions. 2 weeks later he came by the shop complaing og a sudden 3 quat a week oil consumption. after many questions and a bit of tooth gnashing I found the PCV valve was located directly over a pushrod and without the baffle installed was forcing oil directly up the PCV valve.<br /> installed the baffle, he wondered what all the extra parts were for, and the oil consumption returned to normal.<br /> if you care to read a very very good book that will explain most anything a novice needs to know I can give you the info.
 

Lou C

Supreme Mariner
Joined
Nov 10, 2002
Messages
13,048
Re: Air Breathers Pumping Oil

As far as inspections, I have been inspected twice, once by the Coast Guard and the Suffolk Police and neither ever looked under the engine lid, all they check is the PDFs fire extinguisher, flares, horn, radio, distress flag, etc. I feel more comfortable with metal line from the pump to the carb, I would be reluctant to modifiy any part of the fuel system just because of what rodbolt says, liability, even though I am not a marine mechanic by any means you never know about these things (legal). The problem comes when you have to modify something because the OE stuff is not available any longer, or you are using a diffenent carb, etc than it came with. The main issue is that fuel leaks are bad enough on a vehicle, but really scary on an inboard. Almost scary enough to make me get a weedwacker(OB) next time ;)
 
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