Oil blowing in air filter. PART II .
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Cruiser
Joined: Feb 2008
Posts: 172
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Oil blowing in air filter. PART II .
Well got a full professional report this morning on my problem with oil blow by. Mechanic said they couldn't find any problem with the engine that it was NORMAL for the engine to have some blow by that it was my arlen ness big sucker breather messing it up. Said there was no return line to send it back into the engine and it was the breathers fault. They wanted me to install a Harley breather.
So now its NORMAL for an engine to blow a quart of oil out of it in 1500 miles ????????
Any suggestions ?
So now its NORMAL for an engine to blow a quart of oil out of it in 1500 miles ????????
Any suggestions ?
Road Warrior
Joined: Dec 2006
Posts: 1,530
Likes: 0
From: Diamond Bar, California
RE: Oil blowing in air filter. PART II .
I lowered my oil level just below the full mark and that reduced the oil in the A/C considerable.
I also instaled the S&S reed valve behined the oil pump which did not completely eliminate the issue.
I have T/P pro-vent rockerboxes going on next!
I also instaled the S&S reed valve behined the oil pump which did not completely eliminate the issue.
I have T/P pro-vent rockerboxes going on next!
Road Warrior
Joined: Jan 2006
Posts: 1,282
Likes: 115
From: British Columbia
RE: Oil blowing in air filter. PART II .
ORIGINAL: TakeNoCrap
Well got a full professional report this morning on my problem with oil blow by. Mechanic said they couldn't find any problem with the engine that it was NORMAL for the engine to have some blow by that it was my arlen ness big sucker breather messing it up. Said there was no return line to send it back into the engine and it was the breathers fault. They wanted me to install a Harley breather.
So now its NORMAL for an engine to blow a quart of oil out of it in 1500 miles ????????
Any suggestions ?
Well got a full professional report this morning on my problem with oil blow by. Mechanic said they couldn't find any problem with the engine that it was NORMAL for the engine to have some blow by that it was my arlen ness big sucker breather messing it up. Said there was no return line to send it back into the engine and it was the breathers fault. They wanted me to install a Harley breather.
So now its NORMAL for an engine to blow a quart of oil out of it in 1500 miles ????????
Any suggestions ?
Thread Starter
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Cruiser
Joined: Feb 2008
Posts: 172
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From:
RE: Oil blowing in air filter. PART II .
They told me to change the arlen to screaming eagle and go with 50 weight oil. Stay away from synthetic. Said all harleys have blow by at 80 plus mph. My oil pressure reads fine. Guess im running it to hard or something. They told me i couldnt run it at 85 plus. Said i would burn the motor up and create blow by. Said it was normal for a harley to use oil.
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Cruiser
Joined: Feb 2008
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RE: Oil blowing in air filter. PART II .
Yes 2/3 of a quart to be exact. I was running 80 to 95 for 17 hours. We did an ironbutt. I was not aware the bike couldnt withstand 90 mph. Iv always had metric bikes that had no problem. Guess harley is different.
Outstanding HDF Member
Joined: May 2007
Posts: 2,304
Likes: 31
From: Florida
RE: Oil blowing in air filter. PART II .
ORIGINAL: mentor70
I lowered my oil level just below the full mark and that reduced the oil in the A/C considerable.
I also instaled the S&S reed valve behined the oil pump which did not completely eliminate the issue.
I have T/P pro-vent rockerboxes going on next!
I lowered my oil level just below the full mark and that reduced the oil in the A/C considerable.
I also instaled the S&S reed valve behined the oil pump which did not completely eliminate the issue.
I have T/P pro-vent rockerboxes going on next!
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Outstanding HDF Member
Joined: Apr 2006
Posts: 2,282
Likes: 52
From: DFW
RE: Oil blowing in air filter. PART II .
Picking mine up after the 5k service, exhaust install, dyno and two warranty items; the oil in air filter issue and the broken rear air shocks. I'm betting they are able to fix one of them. This is my 3rd HD and I've NEVER had this problem before, and I for sure can't believe that anyone would tell you that running your bike 85-90 will cause oil to blow our and splatter the front of the saddle bags, side plate, and even the seat. Not to mention the drips on the cam cover. I'm not saying they didn't tell you that mind you, I'm just saying I'm not believing that Harleys are incable of that without blowing oil like this. Surely there is a fix. I won't know till in the morning what they say about mine.
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Road Warrior
Joined: Dec 2006
Posts: 1,530
Likes: 0
From: Diamond Bar, California
RE: Oil blowing in air filter. PART II .
ORIGINAL: Doc 1
Mentor, I respect your knowledge on these motors and I don't want to offend you or insult you but I have to saythe S&S breather will actually make the oil carry over problem worse because it stops the engine internal breathing between the crank case and cam chest through the pinion bearing, this lets the cam chest fill up faster with oil and forced up to the rocker boxes with each down stroke of the pistons. Earlier bikes depended on a crank case vacuum to pull out the oil from the top end into the return system but the return oil in a Twin Cam goes into the cam chest so itneeds to breath internal so the up stroke of the piston sucks the oil out of the rocker box so it won't come out the breather bolts.....the S&S reed breather stops this process fromhappening.
ORIGINAL: mentor70
I lowered my oil level just below the full mark and that reduced the oil in the A/C considerable.
I also instaled the S&S reed valve behined the oil pump which did not completely eliminate the issue.
I have T/P pro-vent rockerboxes going on next!
I lowered my oil level just below the full mark and that reduced the oil in the A/C considerable.
I also instaled the S&S reed valve behined the oil pump which did not completely eliminate the issue.
I have T/P pro-vent rockerboxes going on next!
Thread Starter
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Cruiser
Joined: Feb 2008
Posts: 172
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From:
RE: Oil blowing in air filter. PART II .
ORIGINAL: GliderXXX
Picking mine up after the 5k service, exhaust install, dyno and two warranty items; the oil in air filter issue and the broken rear air shocks. I'm betting they are able to fix one of them. This is my 3rd HD and I've NEVER had this problem before, and I for sure can't believe that anyone would tell you that running your bike 85-90 will cause oil to blow our and splatter the front of the saddle bags, side plate, and even the seat. Not to mention the drips on the cam cover. I'm not saying they didn't tell you that mind you, I'm just saying I'm not believing that Harleys are incable of that without blowing oil like this. Surely there is a fix. I won't know till in the morning what they say about mine.
Picking mine up after the 5k service, exhaust install, dyno and two warranty items; the oil in air filter issue and the broken rear air shocks. I'm betting they are able to fix one of them. This is my 3rd HD and I've NEVER had this problem before, and I for sure can't believe that anyone would tell you that running your bike 85-90 will cause oil to blow our and splatter the front of the saddle bags, side plate, and even the seat. Not to mention the drips on the cam cover. I'm not saying they didn't tell you that mind you, I'm just saying I'm not believing that Harleys are incable of that without blowing oil like this. Surely there is a fix. I won't know till in the morning what they say about mine.