Lazy oil change

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Jun 6, 2010 | 09:25 AM

#61

beary

Grand HDF Member

Joined: Mar 2007

Posts: 4,928

Likes: 285

From: Edmond Oklahoma

Quote:

Originally Posted by strtarrow

I pull the dip stick, remove the drain plug and once it has stopped dripping I remove the spark plugs and crank the motor. You would be surprised at how much oil will crank out. I then do it again still getting more oil.

I will consider this. I run my engine for 3 seconds after the oil has drained and get another half quart. I'm uncomfortable doing that because it takes the oil away from the crank and cam. But I can see by taking the plugs out, there wont be much stress from the compression. THat would get all the dirty oil out.

Any thoughts

Beary

Jun 6, 2010 | 09:51 AM

#62

Ronp42

Account Retired

Joined: Oct 2009

Posts: 3,245

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From: Here

Quote:

Originally Posted by frenchbiker

http://*******.com/2d33h2s

http://www.jpcycles.com/product/910-439?utm_source=google&utm_medium=organic&utm_campa ign=products

Tell me more about your method of removing the spark plugs and cranking the engine to get more dirty oil out of it. How much oil do you get this way? How long do you do this without risking to damage the motor and how do you catch the oil out of the plug holes?

I'm thinking of using the Scavenger oil kit from Rogue Chopper. It uses 1qt of fresh oil to push the old one out of the crankcase, which seems a safer method to me, mechanically speaking, plus you don't make a mess since the additional oil comes out of the drain hole.

http://www.roguechopper.com/

He removes the spark plugs to release the compression. If you get oil out the spark plugs holes, you've got serious problems!

Jun 6, 2010 | 10:13 AM

#63

frenchbiker

Elite HDF Member

Joined: Apr 2006

Posts: 3,948

Likes: 54

From: The Burgh

Quote:

Originally Posted by Ronp42

He removes the spark plugs to release the compression. If you get oil out the spark plugs holes, you've got serious problems!

LOL That's what I thought but his post got me confused. There's no oil in the combustion chamber anyway, only air and fuel.
Now what does releasing the compression mean?

Last edited by frenchbiker; Jun 6, 2010 at 10:16 AM.

Jun 6, 2010 | 10:25 AM

#64

beary

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Joined: Mar 2007

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From: Edmond Oklahoma

Quote:

Originally Posted by frenchbiker

LOL That's what I thought but his post got me confused. There's no oil in the combustion chamber anyway, only air and fuel.
Now what does releasing the compression mean?

IT means taking the pressure off the crank and bearings mostly. There is a thin film of oil between the two parts and if there is not oil pressure during the compression, the thin film will not be enough to prevent metal to metal contact. Taking away the compression might be enough to keep enough film to protect the parts.

Beary

Jun 6, 2010 | 10:34 AM

#65

frenchbiker

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Joined: Apr 2006

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From: The Burgh

Quote:

Originally Posted by beary

I see, thanks. I feel more comfy with the method used by the Scavenger system which uses 1 qt of fresh oil pumped through the pipe plug and pushing the remaining old oil out with the engine running with a dummy oil filter. I won't consider cranking the engine with no oil in it.

Jun 6, 2010 | 11:56 AM

#66

Clint55

Road Warrior

Joined: Nov 2008

Posts: 1,955

Likes: 7

From: The Great Northwest

My routine is to go to the end of my road, hang a right and give it good hard ride once around the block to warm it up. But then, going around my block is about 20 miles. Just seems to make sense to warm it up first.

Dawg makes a good point about the dealer. When you check your bike in for a service the next day, there is no friggn way that the tech takes your bike for a 20 minute (or more) ride to "warm it up to normal operating temperature" before the oil change. As a matter of fact, I think it would be good marketing technique for a dealer to advertise actually use an oil scavenging system.

All in all, I'm a believer in heating up the pig if possible.

Jun 6, 2010 | 05:23 PM

#67

Powderhorn

Intermediate

Joined: May 2009

Posts: 34

Likes: 0

From: Barre, VT

Harley had it right on the 1930-1936 flat heads. Motor never ran on old oil...after your bike started smoking some you simply pulled over to the side of the road and could drain the engine oil on the ground and then refill the motor from the on bike reservoir of new oil and you were good for another 500 miles.

Jun 6, 2010 | 05:33 PM

#68

strtarrow

Banned

Joined: Feb 2009

Posts: 6,259

Likes: 5

From: NW NC

Quote:

Originally Posted by frenchbiker

My bad. I meant to say spark plug wires and that is so it does not start. I then hit the starter a couple seconds. As far as engine damage I have done this with regular oil without much concern but feel fairly confident the few short strokes using synthetic is not a problem at all. As far as how much more oil I get out it may be only half a pint but like I said, I am ****....