oil filters and oil blow off

[Kdub]

So after rummaging through here on proper K&N oil filter I bought the 170 not the 171. I believe those are the right part numbers. On one thread someone mentioned the back flow thing on the 171 can cause oil to blow out the hose by the carb and leave a nice oily residue down the right side of your bike. My buddies 06 ridge is doing this. Now I'm not sure which filter he has on it, but my question would be how likely if he does have a 171 is it the filter causing this. I read some guys have always used the 171 with no problems. Any other possibilities causing this?

 

[outdoorsman26]

k an p oil filter wil solve all your problems and it will filter your oil better than the paper ones!! Just food for thought!!

 

[Th3InfamousI]

The oil bypass is just there for if the filter gets full of oil (most likely due to being filthy dirty) it will bypass the filter and deposit back to the oil line. This is a safety feature on the oil filter not to cause engine oil starvation. I can't think why the bypass would cause any additional blowby. Unless the filter is just complete crap, but even then I think its a stretch.

All engines will have a little. Is this blowby coming out of the crankcase breather? You say the carb, but which hose?



Here is one my posts from a great thread on the subject:

Thread:http://www.bigdogbiker.com/forums/fluids/25478-oil-filter-bd-chopper.html

I bought the S&S Oil Filter (31-4102) - says its 30 Microns, and I'm not happy with it. During rapid deceleration my oil light comes on for a quick 1-2 seconds. I dont think the oil is flowing fast enough through the filter. It supposdly has the bypass to ensure plenty of oil flows through however in my opinion it shouldnt have to use the bypass anyways as it just dumps the dirty oil back into the pan. Its a low pressure system requiring high volume, you need a proper filter for this application.

I had the K&N before when I bought the bike and did not have the same result. I bought two of the S&S Filters, probably either get the K&P and just wash/reuse or go back to the K&N. Won't use the S&S Filters on the bike again :down:

I know some of the guys with numerous miles on their bikes swear by the K&P I believe Raywood made the switch from the standard paper filter to the K&P and found paper particles in his filter for the next 2 oil changes.

K&N 170 or K&P are the only two options in my opinion.

K&N 170 - $11.73 Shipped Via Amazon Amazon.com: K&N KN-170C Harley Davidson High Performance Oil Filter: Automotive

K&P - Mad Dog Value Teck! - $150 http://valuetec.startlogic.com//page12.html

 

[Kdub]

Not to get away from answering my original post but how often do you need to replace the gasket on the K&P?

 

[Chopper Dave]

k an p oil filter wil solve all your problems and it will filter your oil better than the paper ones!! Just food for thought!!

yep yep! been running the K&P filter for over 3 years now :2thumbs:

 

[woodbutcher]

Not to get away from answering my original post but how often do you need to replace the gasket on the K&P?

if lubed when you put the filter back on after cleaning, the o-ring/gasket should last you 5+ oil changes. wouldn't doubt but what you could get 10+ out of them. that said, 10 = 25000 miles. :2thumbs:

 

[outdoorsman26]

Not to get away from answering my original post but how often do you need to replace the gasket on the K&P?

got 4 on mine now and it looks good!!

 

[Brew]

Got 6 oil changes with mine and still on the same seal. You also get an extra seal with the deal...:2thumbs:

 

[Mad Dog]

You won't wear out the gasket and if you do it comes with a spare. All you have to do is remember where you saved it in 4 or 5 years.:lol:
Link to The Group Buy Page
http://valuetec.startlogic.com//page12.html

 

[k-9]

So after rummaging through here on proper K&N oil filter I bought the 170 not the 171. I believe those are the right part numbers. On one thread someone mentioned the back flow thing on the 171 can cause oil to blow out the hose by the carb and leave a nice oily residue down the right side of your bike. My buddies 06 ridge is doing this. Now I'm not sure which filter he has on it, but my question would be how likely if he does have a 171 is it the filter causing this. I read some guys have always used the 171 with no problems. Any other possibilities causing this?

my 08 k9 was dripping oil on the right side,i changed my air filter which was full of oil my mechanic here at big dog in wichta told me i was'nt riding at high enough rpm's so i increased rpm's even at casual cruising no more oil in air filter and no more drips

 

[petwatch]

with ss air filter, stop oil blow back, i put a womans mini pad in cover at the bottom.

 

[Raywood]

Not to get away from answering my original post but how often do you need to replace the gasket on the K&P?

I bought my K&P back in 04 and still using the same gasket. I swapped it around last year though.... or was it the year before that!!!! ha ha
The K&P has paid of over the years for me.

 

[BigDogBro1]

So after rummaging through here on proper K&N oil filter I bought the 170 not the 171. I believe those are the right part numbers. On one thread someone mentioned the back flow thing on the 171 can cause oil to blow out the hose by the carb and leave a nice oily residue down the right side of your bike. My buddies 06 ridge is doing this. Now I'm not sure which filter he has on it, but my question would be how likely if he does have a 171 is it the filter causing this. I read some guys have always used the 171 with no problems. Any other possibilities causing this?

The 171 I think is the filter having the back flow valve in it. All the valve is for is on some engine designs the engineers wanted to keep the oil filter full when the engine was off. It will work as good as the 170 filter on the S&S engine. On the S&S it doesn't matter because the filter is in the return to tank side line of the oil system.

If oil is blowing out the vent, it could be caused by an oil filter with too fine of micron filter or low flow thus causing the engine sump to build up too much oil.

 

[RRRUFF]

The 171 I think is the filter having the back flow valve in it. All the valve is for is on some engine designs the engineers wanted to keep the oil filter full when the engine was off. It will work as good as the 170 filter on the S&S engine. On the S&S it doesn't matter because the filter is in the return to tank side line of the oil system.

If oil is blowing out the vent, it could be caused by an oil filter with too fine of micron filter or low flow thus causing the engine sump to build up too much oil.

What BigDogBro1 said here and also if the air filter gets really dirty it will cause more vacuum on the front crank breather tube & tend to suck oil out of the crankcase. If the oil filter gets really dirty also like said above it filters on the return to the oil tank so this will cause the engine sump to over fill and be sucked up through the crank vent. One more possibility is the check valve on the oil pump may stick open when the engine sits for a while and allow the engine sump to fill up with oil and when the engine is started oil will be sucked up through the crank vent tubes. Or he may just be over filling it.