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  #11  
Old 12-29-2007, 12:32 PM
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Ok that is the motor. So I am missing the carb spacer plate! Anyone know if the performer manifold with that plate is going to create a clearance problem?
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  #12  
Old 12-29-2007, 12:35 PM
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Probably will. Check the base of the carb to see if you have a vacuum port that is capped on it. If so you can use that. If not you can get a low profile flame arrestor from DIM. You can also probably pull one of the plugs out of the manifold and add a fitting so you have a vacuum port straight from the manifold. Doesn't really matter where exactly you are getting the vacuum from.
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  #13  
Old 12-29-2007, 01:30 PM
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My 351 Indmar engine does not have a PCV valve going to the spark arrestor. Should I be buying a new arrestor and valve cover cap with a PCV valve in???
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  #14  
Old 12-29-2007, 01:40 PM
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Here is mine, hope it helps. Looks like I've got the vent cap you mentioned but I've not had a problem with oil mist. Post your setup when complete.
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  #15  
Old 12-29-2007, 02:40 PM
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My 351 Indmar is exactly like hester's and I don't have a problem with oil mist either.
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  #16  
Old 12-29-2007, 05:59 PM
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There is nothing wrong with your setup. Only thing is I would think twice about putting that vapor under your engine cover. The proper setup for your boat would have a tube coming from the oil cap up to the flame arrestor. There is not supposed to be a PCV valve in this line. Just an open line that burns vapor. The reason I get the oil mist is because my filter is opposite of yours. As the boat is coming out of the hole, all the oil in the rockers goes to the back of the cover and mist's heavily. Once I get home I will post some ics. I'm in Austin are right now. Just had to replace exh manifolds, risers, circ pump, distributor, and impellor. Cha ching!!! But runs like a raped ape right now!! Got some carb tweaking to do. Secondaries need to be adjusted a little, and I'm going to 86 my mufflers for straight pipes! Remember, loud pipes save lives!!
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  #17  
Old 01-03-2008, 01:51 PM
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I have the same set-up as hestor. I don't think it should have a misting problem as the cap on the left side of the motor should have air going IN only and the other side has the air going OUT and routed into the intake via the carb base plate. I think the only reason that some boats have the hose going up to the spark arrestor is to get some filtration of the air going into the crankcase.

Bruce
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  #18  
Old 01-03-2008, 02:42 PM
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The cap is designed with a filter element inside of it. Engines that run the hose up to the air filter have the filter up there. You should not have mist coming out of the filler cap or into the air cleaner if the hose runs up there. As was mentioned, air should be entering the crankcase at that point. The mist would indicate a clogged PCV valve or excessive blow-by (likely worn rings).
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  #19  
Old 01-03-2008, 03:56 PM
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I'm late, but I'm still posting old engine pics!



With the stock flame arrestor and a spacer under the carb, you may run into clearance problems. I did on my 93, but the 93 engine box was smaller.

Unfortunately, these are harder to find than they used to be.



But if you can get a low profile flame arrestor, do it. Mine wasn't plumbed into anything from the flame arrestor, but the spacer was plumbed to the starboard side valve cover.

Another option for gaining space is to build a collar for your engine box to raise it off the floor. There was a guy on CCfan that did that and it looked pretty slick. Can't remember who it was, but TRBenj could tell you.

Also, check your throttle cable to make sure it's running close to level. Mine required a bracket to keep it from binding up after everything got raised up 1.5".
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  #20  
Old 01-03-2008, 05:46 PM
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Well I took some pics but cant upload them because of size. Any ideas??
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