crankcase oil drain on evo?

Reply Subscribe

Thread Tools

Search this Thread

Jan 11, 2015 | 01:35 PM

#11

grbrown

Club Member

Joined: Jun 2007

Posts: 45,429

Likes: 2,898

From: Bedford UK

Quote:

Originally Posted by glidein wide

Maybe there's less oil left behind than I thought , just curious if anyone has made this mod.Doesn't mean it's a bad idea but I will leave well enough alone.I may rebuilt motor next winter is the reason for my question.

I really don't see any benefit of adding an oil drain plug. I've been riding bikes for almost 50 years and have owned my Glide since new, in 1990. The notion of 'dirty oil' left behind is very recent in my experience. The only bike I got bothered about was one that had an oil cooler, which along with its hoses held around a pint of oil, which was a bit messy to get out, but worthwhile.

In half a million miles I haven't had a single bike give trouble due to engine lubrication, except a troublesome stroker that used premix fuel/oil. Many of my bikes have had an oilbag, like my Evo, but it isn't even worth emptying the oil hoses between tank and engine IMHO. Relax man!

Jan 11, 2015 | 01:35 PM

#12

johnjzjz

Seasoned HDF Member

Joined: Nov 2006

Posts: 12,878

Likes: 5,449

From: la la land jerzey

in my shop we leave the oil filter off and after filling the motor oil we start it and run untill the oil is clean - then install the new filter

antique bikes its different but we do them almost the same way

no one does it that way ????? really

Jan 11, 2015 | 01:39 PM

#13

Dan89FLSTC

Seasoned HDF Member

Joined: May 2008

Posts: 21,173

Likes: 12,740

From: South Carolina

I`ve never heard of anyone installing a drain plug on a Big Twin Crankcase.

Jan 11, 2015 | 01:53 PM

#14

glidein wide

Thread Starter

Stellar HDF Member

Joined: Jan 2015

Posts: 2,504

Likes: 150

From: ct

I like the idea of circulating without the oil filter on,almost tried that but thought it a little crazy apparently not my idea though ,tooooo funny!!!!! Not sure if I'll try though, maybe.

Jan 11, 2015 | 01:58 PM

#15

Dan89FLSTC

Seasoned HDF Member

Joined: May 2008

Posts: 21,173

Likes: 12,740

From: South Carolina

Quote:

Originally Posted by glidein wide

I like the idea of circulating without the oil filter on,almost tried that but thought it a little crazy apparently not my idea though ,tooooo funny!!!!! Not sure if I'll try though, maybe.

Running without an oil filter (on an Evo or Shovelhead) accomplishes the same thing as the scavenger puck does.

Last edited by Dan89FLSTC; Jan 11, 2015 at 02:03 PM.

Jan 11, 2015 | 02:52 PM

#16

Schex

Club Member

Joined: Apr 2011

Posts: 5,816

Likes: 7,847

From: SE Louisiana

Quote:

Originally Posted by johnjzjz

Been doing that since day one, cut the bottom off a old filter and screw it on, saves making a mess.
Takes a half qt. to clear on the bagger with the filter under the trans and 10 row Jagg,

Jan 11, 2015 | 07:33 PM

#17

johnjzjz

Seasoned HDF Member

Joined: Nov 2006

Posts: 12,878

Likes: 5,449

From: la la land jerzey

it makes almost all the oil clean to start off with and some of the oil at 12 / 14 bucks a quart i like the idea

Jan 11, 2015 | 08:11 PM

#18

Prot

Club Member

Joined: Aug 2008

Posts: 22,861

Likes: 17,917

From: Lafayette, Louisiana

Or you could change the oil more often, therefore the oil isn't as dirty to begin with.

HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

7 Times Harley-Davidson Chucked Tradition Out the Window

Verdad Gallardo

7 Surprising Harley-Davidson Products that Are Not Motorcycles

Verdad Gallardo

8 Best Harley-Davidson Motorcycles Ever

Pouria Savadkouei

10 Worst Harley-Davidson Motorcycles Ever

Pouria Savadkouei

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Verdad Gallardo

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Verdad Gallardo

Harley-Davidson Reveals Super Cool Cafe Racer Concept

Verdad Gallardo

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Verdad Gallardo

10 Motorcycles You Should Never Buy

Joe Kucinski

10 Things Harley-Davidson Needs to Fix in 2026

Verdad Gallardo

Jan 11, 2015 | 08:20 PM

#19

johnjzjz

Seasoned HDF Member

Joined: Nov 2006

Posts: 12,878

Likes: 5,449

From: la la land jerzey

unless you use oil to its determined change point you never get the benifits the oil was designed for in the first place

we have raced with guys who never changed the oil all season and when possable they Bought the used oil from nitro burning race cars to add to the oil they use -

reason nitro has an oxygen agent in it and at different temps it is released into the combustion chamber Via the engine oil - royal purple has this in its oil BUT it only last so long then the power boost you get is gone