Evo Oil Breather
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Intermediate
Joined: Mar 2008
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Evo Oil Breather
Recently fitted an Evo style 110" engine (Sputhe) with a bottom breather, it's done about 50 miles and whilst out for a run I noticed smoke coming up from the front of the bike. Stopped and noticed oil pouring from air filter cover (S & S) which was going onto pipes and oil pump (S&S). It's coming from bottom breather pipe. Anybody any ideas why it's doing this ? Running fully synthetic so not cheap. Not showing any oil pressure on the guage but oil light goes 'out' .............. worried no oil to top end.
Cold dry day here and after filling up with petrol it all seemed to be going sooo well ...................... why does it ALWAYS happen that way ?
Cold dry day here and after filling up with petrol it all seemed to be going sooo well ...................... why does it ALWAYS happen that way ?
Road Warrior
Joined: Apr 2007
Posts: 1,354
Likes: 1
From: S.W. Florida
Andy,
Jeez!! top or bottom breather heads along with the bottom breather Sputhe cases??? I thought when we talked before this was an S&S engine. Is the internal breather timed properly, is the correct oil pump and oil pump gaskets installed?? More info please.
Jeez!! top or bottom breather heads along with the bottom breather Sputhe cases??? I thought when we talked before this was an S&S engine. Is the internal breather timed properly, is the correct oil pump and oil pump gaskets installed?? More info please.
Last edited by Buddy WMC; Dec 6, 2009 at 01:03 PM.
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Intermediate
Joined: Mar 2008
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No breathers on the RMD heads (fitted with Sputhe covers), breather valve is timed OK oil pump was rebuilt using new gaskets. Engine was COMPLETELY rebuilt after shearing a pinion shaft, balanced and crank rebuilt. Was running OK, it's already done 250 miles inc' warm-ups with an oil change at every step ............. gutted ! After being recovered and brought home now looking for ideas of things to check tomorrow or the end of the week.
Good to 'hear' from you !
If I'd had post 1992 crankcases I would have worked my original Evo motor ........ might have to get an Ultima 113" ?
Good to 'hear' from you !
If I'd had post 1992 crankcases I would have worked my original Evo motor ........ might have to get an Ultima 113" ?
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
Is it circulating oil?? I take it you ran the breather hose into the air cleaner?? Is the oil tank overfilled? Try taking a little oil out to ensure that the level isn't over the vent in the tank. Hope this helps.
HDF Community Team
Joined: Dec 2005
Posts: 5,402
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From: NC USA
Questions -
Are you running a 92 or later timing cover?
Did the bottom breather Sputhe case have a tube running parallel and under the breather gear in a seperate chamber?
Was the metering plug installed into the new pinion shaft?
Are you running a 92 or later timing cover?
Did the bottom breather Sputhe case have a tube running parallel and under the breather gear in a seperate chamber?
Was the metering plug installed into the new pinion shaft?
Road Warrior
Joined: Apr 2007
Posts: 1,354
Likes: 1
From: S.W. Florida
Andy,
Check out what John and Rufus have suggested, we'll somehow between us get this figured out. How's the weather been in Scotland? I'm still waiting to catch up with you on that pint,two, three or more!!
Check out what John and Rufus have suggested, we'll somehow between us get this figured out. How's the weather been in Scotland? I'm still waiting to catch up with you on that pint,two, three or more!!
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