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  #16 (permalink)  
Old 04-01-2007, 07:27 AM
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It does leak while running. And as far as the breather, it's hooked up to an S&S air cleaner. This leak is not huge, but it's still a leak.
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  #17 (permalink)  
Old 04-01-2007, 07:32 AM
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I talked to Ultima and they have a product called an EBOC. It is a lower end breather. I installed one on my 127" but not enough miles on it yet to tell if it works. I figured it can't hurt. Sounds like you have a pressure problem if it leaks after a while once it builds up pressure.
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  #18 (permalink)  
Old 04-01-2007, 07:34 AM
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Stynie, as far as I know the breather going to your S & S air cleaner is for the top end breathing and not the bottom end.
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  #19 (permalink)  
Old 04-01-2007, 07:36 AM
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Can you elaborate on the EBOC? Where does it go? Why would the engine need one as opposed to other Evo's that don't build pressure?
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Old 04-01-2007, 07:37 AM
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Quote:
Originally Posted by dave19
Stynie, as far as I know the breather going to your S & S air cleaner is for the top end breathing and not the bottom end.
Isn't the one line above the oil pump a breather?
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Old 04-01-2007, 07:49 AM
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Quote:
Stynie, as far as I know the breather going to your S & S air cleaner is for the top end breathing and not the bottom end.
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unless its a different design than hd, that should be the breather for the bottom end. You should be able to tell/hear if its "breathing" alright. You can also pull the timing plug and probably notice any excessive pressure while running the bike
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  #22 (permalink)  
Old 04-01-2007, 07:50 AM
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EBOC stands for engine breather oil collector. If you go to Jireh Cycles web site look up part # 21-359 or 21-360. It was about $90.00 and though it would be cheap ins. I mounted mine to one of the tranny bolts.
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Old 04-01-2007, 08:30 AM
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Quote:
Originally Posted by BSAketcase
unless its a different design than hd, that should be the breather for the bottom end.
That's what I thought as well. There isn't 2 "sections" that need to be vented seperately...............or is there?
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Old 04-01-2007, 08:34 AM
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No, the head breathers cover it all.
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Old 04-01-2007, 08:38 AM
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Quote:
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No, the head breathers cover it all.
Was waiting for you to join. Any ideas as far as the other suggestions.....o-ring,excessive pressure,clogged line,etc.
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  #26 (permalink)  
Old 04-01-2007, 08:45 AM
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It would be easier if we knew exactly where it was coming from.

On an hd case, the stator wire plastic retaining clip holes can leak.

Your engine doesn't have those holes, put maybe the stator mounting holes could be leaking.

check around the stator mounting area to see if it's wet.

it's possible that pressure is building up. pull the vent line from the block to the tank and see if it's clear.


I'm not questioning you, but it may be possible that you damaged the seal on install.
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  #27 (permalink)  
Old 04-01-2007, 08:53 AM
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Yea, it's hard to see where it's coming form. I have thought in the past the stator holes were drilled too deep. I tried using an air sprayer with a rubber tip and blow air in the holes to see if I could hear a leak in the engine. I didn't hear anything, and when I took the sprayer off each hole, there was air pressure built up. i did coat the bolts for it with Permatex "Right Stuff" anyway. I used 2" pvc pipe to install the seal, and it went pretty friggin straight going in. I was kinda thinking what will keep oil from getting between the crank and the spacer. Is there anything to that theory?
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  #28 (permalink)  
Old 04-01-2007, 09:13 AM
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that's a machined fit. and once everything is tight that really shouldn't be the issue.


The next time you pull the seal, give a real good look at the seal race. make sure there are no decent scratches.
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  #29 (permalink)  
Old 04-01-2007, 10:33 AM
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Thought of the seal race as well. I sanded any small scratches and coated the race as well the outside of the seal w/Right Stuff. What you said about the machined fit made sense to me, but someone elses suggestion got me thinking.
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  #30 (permalink)  
Old 04-01-2007, 10:45 AM
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I've never tried that. Give it a shot. I'm curious if it will work for you.
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