Evolution engine crankcase breather filter. Fit one or not?
#1
Evolution engine crankcase breather filter. Fit one or not?
After surfing through various topics/threads & places to post this, I figured here was best.
I have a 1996 Evo FXSTC. 24,000 miles. Can anyone advise regards whether or not to fit a crankcase breather filter to it?
The standard set up (i.e. back into the air filter) is what it has at the minute. The bike often has small drops of oil on top of the gear case (timing housing) and after a hard(er) ride, oil mist has blown back over the frame & oil tank (a little bit) but other than that, the bike runs very well, it's not a hassle. I know Evo's do this and I've had a few that 'spurt' from the air filter... Just getting fed up wiping it (LOL). If there's a mechanical benefit..... so.....
Why should I fit one?
What are the benefits/drawbacks?
Does anyone have tips on fitting?
The best filter to buy? Reed valve (at a bit silly prices) or the basic £15.00 ($20ish) jobs?
Location of filter and bracket? (was thinking height here being a gravity fed oil system?). Does it matter??
Any info/opinion is MUCH appreciated. Thanks folks.
I have a 1996 Evo FXSTC. 24,000 miles. Can anyone advise regards whether or not to fit a crankcase breather filter to it?
The standard set up (i.e. back into the air filter) is what it has at the minute. The bike often has small drops of oil on top of the gear case (timing housing) and after a hard(er) ride, oil mist has blown back over the frame & oil tank (a little bit) but other than that, the bike runs very well, it's not a hassle. I know Evo's do this and I've had a few that 'spurt' from the air filter... Just getting fed up wiping it (LOL). If there's a mechanical benefit..... so.....
Why should I fit one?
What are the benefits/drawbacks?
Does anyone have tips on fitting?
The best filter to buy? Reed valve (at a bit silly prices) or the basic £15.00 ($20ish) jobs?
Location of filter and bracket? (was thinking height here being a gravity fed oil system?). Does it matter??
Any info/opinion is MUCH appreciated. Thanks folks.
Last edited by Olias; 01-03-2010 at 07:49 AM.
#2
I run a Unifilter (3/8 male connector ) off the breather at the back of the right engine case to the frame just below the oil pump Let it drip As far as the reed valves I do run one on my 96CI S&S motor I don't think it makes any more power etc etc I do not like the breather hoses going into the back of the air cleaner I know your 1996 breaths through the heads but you can get connectors to route this away even though my 1993 FLHS still breaths into the air filter Proper oil level in the oil tank can prevent (somewhat ) oil blow by
#3
#4
No filter, just the hose routed down the frame rail on the right side, never see any oil under it when it is parked in the garage, and no oil is on the bike. Been working fine like that for 21 years now and 125k miles. Engine is a case breather.
Engine has no mods other than ev27 cam and Mikuni carb.
Engine has no mods other than ev27 cam and Mikuni carb.
#5
#6
Many thanks for the replies people. All much appreciated. I had a look on the net at that Big Sucker kit but it looks like the filter element is too open to the kind of weather we get in the UK. Lots of feckin' rain!
I'm pretty sharp at keeping the oil level as spot on as I can and I think the connector to route a pipe from the filter could be the way to go.
Thanks again!!
I'm pretty sharp at keeping the oil level as spot on as I can and I think the connector to route a pipe from the filter could be the way to go.
Thanks again!!
#7
you can put a different AC cover on it...pretty sure, or bag the element like some do with heavy breathers and the like.
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#8
#9
hey...about crank breathers...how come they don't just route back to the oil tank?