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How do you guys run your breathers?

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Old 12-16-2002, 08:59 AM
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Has anyone used a vacuum pump for a crankcase evac. system on a boat motor?
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Old 12-16-2002, 09:04 AM
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I wonder if the torque roll is indicative of the low X or not enough trim.. It has been a long while since I have felt at home in this boat. Haven't seriously driven it is 2 years. I punched in the data into hill slip calc and it came out to 7.5%. Hard to believe with a stock non-labbed mirage and stock X dim. I think my tach may be in question....Anyone else got any ideas on the torque roll??
 
Old 12-16-2002, 11:03 AM
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Brad, if you dumped our fat asses on the dock and stayed in it the century mark is for certain
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Old 12-16-2002, 04:42 PM
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Who would drive?

I did notice we had a lot of fuel left. I think we have 3/4 tank - 40 gallons..
 
Old 12-16-2002, 05:33 PM
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cyphen that $hit out , you drive,and hold the gps and take the picture
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Old 12-16-2002, 06:00 PM
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Ric232
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Originally posted by WETTE VETTE
Here is a mock up of how I am going to do it with my new KE 2 piece valve covers. From my experience the mushrooms seem to leak and the clamp on get saturated and also blow a mist of oil onto the motor. I have had the best luck just running them to the flame arrestor as shown on my weak mock-up. What are you guys doing on your custom set-ups?
I've had those same valve on my MPI motor for almost a year now. I had to get creative and hook up my breather and PCV to them using a 1" copper adapter from Home Depot. I'd like to change this to something a little more professional, but I don't know the size (or type) of fitting that goes inside the KE breather tube. I don't know this AN/NPT,etc. stuff yet. Can you help, WETTE VETTE?
 
Old 12-16-2002, 07:02 PM
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RIC232,
The black fitting on my KE valve covers have a baffled floor and 1" NPT female thread in them. I got 1"NPT to -12 AN fittings and went with a -12 fancy Aeroquip hose nipple (45 degree). The hose is nothing more than 3/4" heater hose with some stainless overbraid and more fancy Aeroquip hose clamps. Overall I have around $150.00 in the fittings and the hoses. Hope this helps and I hope it works.
Craig
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Old 12-16-2002, 09:04 PM
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Brad, Assett says you were getting 5600 RPM. Is that through 1.5 or 1.36 gears? If it is through 1.36 gears I come up with about 13% slip which should be about right. My spinelli comes in at about 13% and the Hydromotive is less at about 7% slip with the Spinelli being about 1-2 MPH faster. Now if you are running 1.5 gears your tach is probably off.
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Old 12-16-2002, 10:06 PM
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I would think 7% is impossible on a V bottom, anything close to 10 would be wonderful. Tack may be a little off.

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Old 12-17-2002, 12:01 AM
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Here is a picture of a breather can I use on my engines. Please disregard some of the other temporary plumbing.
Attached Thumbnails How do you guys run your breathers?-starbd-engine-breather-can.jpg  
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